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Lochinvar Installation and Operations manual

1. gt 224 2 WV Os d AIR SHUTTER Figure 52 Adjusting Air Shutter 990 000 2 070 000 Btu hr Models Set Up Procedure Beside the fan duct 15 an air pressure switch with a large and small tube delivering pressure from points inside the pool heater see Figure 53 The pressure in the large tube 15 the chamber pressure The pressure in the small tube is the burner pressure They act together to make the pressure switch By disconnecting the caps from the tees in the pressure switch hoses and connecting them to either side of a manometer you can read the differential pressure to the switch The left pressure tapping connection on the manometer connects to the tee in the tubing from the pool heater front chamber and the right pressure tapping connection on the manometer connects to the tee in the small tubing from the burner 47 If the air pressure switch does not make within 60 seconds from the time the fans turn ON the ignition module will go into a soft lockout period approximately 5 minutes in duration during which time the fans are turned off and the module shows the Low flash code If necessary soft lockout can be circumvented by cycling power using the ON OFF switch to cycle power to the unit NOTE the pool heater has been firing recently allow the pool heater to cool for five minutes with the fans running before beginning the adjustment procedure
2. 7109 lt m gt AV 14510 H3TIOH LNOO 19919 ud 19 HOSN3S 5 5 Commercial Pool Heaters WIRING BOX CONNECTIONS 990 000 2 070 000 BIU HR MODELS WIRING BOX CONNECTIONS WIRING BOX OPTIONAL 1 CONNECTOR FACTORY FLow switch PRESSURE SWITCH SENSOR AC POWER WATER CONNECTOR CONNECTOR FLOW amp PRESS BR BR n FACTORY HEADER HI LIMIT ce zu au 1NO FACTORY REAR CONNECTIONS SHOWN 20 0 219 A2 815 82 Bais zi W PR HI LIMIT BR BR REMOVE FACTORY TEST OPTIONAL JUMPER WHEN INSTALLING d LOUVER OR VENTER REMOTE POOL HI LIMIT FIELD INSTALLED 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 71777 gt l 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 OPTIONAL LWCO PROBE 1 1 1 1 1 1 1 1 1 1 7 SENSOR LOCATED IN INLET OF BYPASS PIPING ON OFF POWER SWITCH DASHED LINE INDICATES NEEN ona OPTIONAL EQUIPMENT RELAY DELAY RELAY LOUVER VENTER CHASSIS 1 ALARM TIME
3. POWER 2 CONNECTED TO ONE OR MORE BRANCH ADJ HI LIMIT CIRCUIT BREAKER A SWITCH CIRCUITS TO PREVENT ELECTRICAL SHOCK BL BL BK ENSURE ALL BRANCH CIRCUITS ARE DE CHASSIS ENERGIZED BEFORE ATTEMPTING TO SERVICE Up e OBTIGNALUNGO BL 24 VAC 120 VAC BK THIS EQUIPMENT RESET j o H CHASSIS G W Bu GROUND BK 3 y Y SE 2 C 1 OPTIONAL ALARM o 1 ISILENCE BL Or Ole BELL24V OUTPUT EET AT 1 Y ju PR i LNO OPTIONAL HIGH LOW BL Pry __ PRESSURE SWITCHES ___ Y 200 F OPTIONAL BL BK ALARM DELAY BL BK PR BL HI LIMIT CURRENT BLOWER 2 FIELD CONNECTED TEST PINS PR Y REMOTE OPERATOR E or ice ee BK BLOWER 1 JUMPER gt BK W or Q i Bk X STATUS 1 IGNITER IGNITION O PRESSURE MODULE BL BL E m NO R Y FIELD INSTALLED O T SAFETY DEVICES 2 SOFT START DELAY CONTINUOUS INTERMITTENT PRESSURE RELAY O SWITCH 1 2 B2 m mm n CONIAC Ia C R BK 110 HI LIMIT R BK VALVE S FIELD BL CONTINUOUSLY INTERMITTENTLY LOCATED MONITORED MONITORED POOL NOTE SHOWN WITH SHORTING BL
4. BK BLACK Y YELLOW OPTIONAL PR PURPLE BR BROWN NE BL BLUE P PINK RELAYS LOCATED ON CONTROL OzORANGE YIG YELLOW WITH GREEN STRIPE PANEL NOTES RELAYS LOCATED IN WIRING BOX 1 WHERE POSSIBLE ALL SWITCHES AND CIRCUITRY ARE SHOWN IN THEIR AT REST STATES 2 ADDITION OF ENERGY MANAGEMENT SYSTEMS OR OPTIONAL LIMIT SWITCHES TO THE TERMINAL LEDS LOCATED ON DISPLAY BOARD STRIP REQUIRE THE REMOVAL OF SOME OF THE SHORTING BARS FROM THE TERMINAL STRIP Bike RIE ANCES 3 WHEN REPLACING DAMAGED WIRING USE EQUIVALENT TYPE AND GAUGE LOCATED IN ELECTRICAL WIRING BOX 619 LBL2229 Rev 21 Commercial Pool Heaters CONTROL BOX CONNECTIONS 500 000 750 000 BTU HR MODELS CONTROL BOX CONNECTIONS CONNECTOR ri 909 GY M ecu TAN B ifi IN LITT X LET EID CONNECTED UNLESS ALARM ADDED 44 EN NK 5 BK BK E XL LN OPTIONAL Y PR Y BL ALARM FLAME FAIL ENABLE RELAY ENABLE RELAY PUMP PURGE dd IGNITER SERVICE MAINTENANCE P OPTIONAL CONNECTOR INDICATOR ANE BL P 7
5. Retain the plastic caps removed from the tees for reinstallation when complete Adjustment Procedure 1 Remove the upper front jacket panels from the unit to access the upper chamber Slightly loosen screws that attach fan transition box to metal base see Figure 51 Depending on model the air shutter s may be located either on the side or the rear of the fan duct Locate the air shutter at the side rear of the fan duct see Figure 50 and 52 Move the air shutter towards the rear or left side of the unit to increase air pressure Move the air shutter towards the front or right side of the unit to decrease air pressure On the 990 000 2 070 000 Btu hr models adjust the air shutter on the left fan until the differential pressure is nominally 1 1 1 3 inches water column 4b The 500 000 750 000 Btu hr models have one fan with a side mounted air shutter The differential for these models is nominally 1 5 1 65 inches water column 4a 5 Reattach the hoses to the pressure switch and locate the air switch adjacent to the right fan and connect the tubes to either side of your manometer 6 Adjust the air shutter on the right fan until the differential pressure is nominally 1 1 1 3 inches water column 7 Once the adjustment procedure is complete reattach the caps to the tees in the hoses to the pressure switches and check all tubing and wire connections for snug fit Test fire the unit Install upper panels Commer
6. SAFETY INFORMATION The information contained in this manual 15 intended for use by qualified professional installers service technicians or gas suppliers Consult your local expert for proper installation or service procedures IMPORTANT Read this owner s manual carefully and completely before trying to install operate or service this pool heater Improper use of this pool heater can cause serious injury or death from burns fire explosion electrical shock and carbon monoxide poisoning DANGER Carbon Monoxide poisoning may lead to death IMPORTANT Consult and follow local building and fire regulations and other safety codes that apply to this installation Consult your local gas utility company to authorize and inspect all gas and flue connections AN WARNING Should overheating occur or the gas supply fail to shut off do not turn off or disconnect the electrical supply to the pump Instead shut off the gas supply at a location external to the pool heater WARNING To minimize the possibility of serious personal injury fire or damage to your pool heater never violate the following safety rules Pool heaters are heat producing appliances avoid damage or injury do not store materials against the pool heater or the vent air intake system Use proper care to avoid unnecessary contact especially children with the pool heater and vent air intake components 2 Never cover your pool heater
7. BARS REMOVED AND ATTACHED 9 OPTIONAL DEVICES IN NON ALARM STATE EXAMPLE DEVICES I HIGH LOW GAS AUX HI LIMIT AUX LIMITS EXT FLOW SWITCH FIELD SUPPLIED LOUVER POWER VENTER CONNECTIONS COM CLOSED MOTOR PROVING CONTACTS REMOVE JUMPER OPTIONAL 10 Ww 120VAC ERN PUMP DELAY RELAY TIMED WITH BLOWER 2 nc O TEMPERATURE PUMP OUT ITEM INDICATES JUNCTION POINT EI BO gt DOTTED LINE BR BR 9 T BR SYSTEM LOOP e SENSOR W WHITE T TAN LOUVER VENTER ENABLE CONTACT RELAY OPTIONAL BLACK Y YELLOW PR PURPLE BR BROWN BL BLUE G GREEN P PINK GY GRAY O ORANGE R RED Y G YELLOW WITH GREEN STRIPE NOTES 1 WHERE POSSIBLE ALL SWITCHES AND CIRCUITRY ARE SHOWN IN THEIR AT REST STATES 2 ADDITION OF ENERGY MANAGEMENT SYSTEMS OR OPTIONAL LIMIT SWITCHES TO THE TERMINAL 4t LEDS LOCATED ON DISPLAY BOARD STRIP REQUIRE THE REMOVAL OF SOME OF THE SHORTING BARS FROM THE TERMINAL STRIP 3 SCHEMATIC IS WIRING DIAGRAM REFER TO ACTUAL COMPONENTS FOR EXACT TERMINAL LOCATIONS 4 WHEN REPLACING DAMAGED WIRING USE EQUIVALENT TYPE AND GAUGE R RELAYS LOCATED ON CONTROL PANEL RELAYS LOCATED IN WIRING BOX OPTIONAL DIN RAIL CONNECTORS LOCATED IN ELECTRICAL WIRI
8. Figure 48 pH Scale If the pH becomes too high it lowers the ability of chlorine to destroy bacteria and algae water can become cloudy filter elements may become blocked and scale formation will occur in the pool and heat exchanger If the pH becomes too low the water becomes acidic You can have eye burn and skin irritation etching of the plaster corrosion of metal fixtures and the resulting stains on the plaster degradation of sand and gravel filters and corrosion of the copper tubes in the heat exchanger Damage to the pool heater due to improper water balance is non warrantable We recommend using a four way test kit to monitor the following levels to ensure proper operation of your pool heater Installation and Service Manual TABLE R Recommended Water Chemistry Test Recommended Level 7 2 7 8 1 0 5 0 PPM 80 120 PPM 175 350 PPM Correct pH Chlorine Residual Total Alkalinity Calcium Hardness Chlorine residual is the chlorine remaining in the pool water after it is consumed in the process of destroying bacteria algae and other oxidizable materials Total alkalinity is the measurement of the total amount of alkaline chemicals in the water Alkalinity controls pH Sodium bicarbonate is used to raise total alkalinity Calcium hardness can be raised by the addition of calcium chloride and lowered by the addition of Tri sodium Phosphate or its equivalent The corrosive level of pool water can also be meas
9. lt gt 525250505 SKK 25252552525 lt gt UM enclosure lt gt 22599 555559505555 X X XXX X Figure 5 Moving Filter Bracket Assembly from Rear of Pool Heater to Side Installation and Service Manual Figure 7 Outside Combustion Air Two Openings 2 Outside Combustion Air Using Ducts You can direct outside combustion air to this pool heater using two air ducts to deliver the air to the mechanical room Each of the two openings must have a minimum free area of one square inch per 2000 Btu input 11cm per kW Figure 8 Outside Combustion Air Through Ducts 3 Outside Combustion Air Using Direct Venting With this option you can connect combustion air vent piping directly to the pool heater See the information under Direct Venting starting on page 21 for specific information regarding this option 4 Combustion Air from Interior Space You can direct combustion air to this pool heater using air from an adjoining interior space You must provide two openings from the mechanical room to the adjoining room Each of the two openings must have a net free area of one square inch per 1000 Btu input 22 per kW but not less than 100 square inches 645 Figure 9 Combustion Air from Interior Space dimensions are based on net free area in square inches Metal louvers or screens reduce the free area of a combustion air opening a minimum of approximately 25 Check wi
10. Clearances from Combustible Construction Maintain minimum specified clearances for adequate operation Allow sufficient space for servicing pipe connections pump and other auxiliary equipment as well as the pool heater See rating plate for specific service clearance requirements Right Side Rear 3 7 5 cm 3 7 5 cm 3 min from any surface Left Side 6 15cm 24 0 61m suggested for service Front Alcove 30 0 76m suggested for service Top 3 75cm Flue 1 25 4mm Hot Water Pipes 1 25 4mm An Alcove is a closet without a door NOTE No additional clearance is needed on the right side of the pool heater for the observation port An observation port is located on both the right and left side of the pool heater NOTE No additional clearances for combustibles are needed for use of the Direct Vent DV air inlet assembly 3 INCH MINIMUM FROM UNIT TO WALL Figure 2 Clearances from Combustible Construction Base for Combustible Floors There are no manufactured combustible floor base kits available for 990 000 2 070 000 Btu models See Table A for floor base kits that are available You must construct a base for combustible floor installation Install the pool heater over a base of hollow clay tiles or concrete blocks from 8 to 12 thick extending at least 24 beyond the pool heater sides Place tiles or blocks so that the holes line up horizontally to provide a clear passage through th
11. Mes UE Y 3 pee pe OPTIONAL HIGH LOW GAS PRESSURE SWITCHES OPTIONAL FLAME ALARM DELAY HI LIMIT CURRENT FIELD CONNECTED TEST PINS i PR Y REMOTE OPERATOR NO 4 5 BLOWER BKAN FLOW LOW WATER e BL BL aooo 4 FIELD INSTALLED He R 3 OY SAFETY DEVICES cO Xo BUNTE VALVE 1 CONTINUOUS INTERMITTENT PRESSUR RELAY Bg E SWITCH CONTACTS 2 B1 B3 VALVE 2 110 F OPTIONAL HI LIMIT erg R o o FIELD coNTINUOUSLY INTERMITTENTLY VALVE LOCATED MONITORED MONITORED IN POOL NOTE sHOWN WITH SHORTING PIPING BARS REMOVED AND ATTACHED DEVICES IN NON ALARM STATE EXAMPLE DEVICES HIGH LOW GAS AUX HI LIMIT AUX LIMITS EXT FLOW SWITCH FIELD SUPPLIED LOUVER POWER VENTER CONNECTIONS MOTOR COM CLOSED CONTACTS BL MAINT PURGE SW RESET REMOVE JUMPER POOL SPA TEMPERATURE PUMP OUT PUMP DELAY RELAY TIMED WITH BLOWER W INDICATES JUNCTION POINT ELECTRICALLY SAME SYSTEM LOOP ap hic ESSE cross cO O BR PROBE 8 BR BR BR TT DOTTED LINE INDICATES OPTIONAL LOUVER VENTER ENABLE EQUIPMENT
12. SERVICE MAINT RESET 0D CONNECTION DIAGRAM A Installation and Service Manual BOX CONNECTIONS 500 000 750 000 BTU HR ONTINUED WIRING BOX CE s AC POWER CONNECTOR COON CHASSIS GROUND RUNTIME MONITORING RELAY 24 CIRCUIT BREAKER TO AUTO MAN amp RESET SWITCHES TO TEST SWITCH P CHASSIS GROUND LBL21xx Rev MAIN UNIT T CONNECTOR 33 Commercial Pool Heaters WIRING BOX CONNECTIONS WIRING DIAGRAM B 200 000 50 000 BTU HR MODELS WIRING BOX CONNECTIONS WIRING BOX OPTIONAL FACTORY WATER CONNECTOR FACTORY FLOW SWITCH PRESSURE SWITCH SENSOR AC POWER CONNECTOR MD BR BR mp EM HEADER s a HI LIMIT ME dn QA A lal SABES HI LIMIT Q 4 Tu 4 A 20 2NO 3C 4C 4NO CONTINUOUS INTERMITTENT Irem v 2 0 0 FACTORY REAR CONNECTIONS SHOWN PR REMOVE FACTORY TEST 8 JUMPER WHEN INSTALLING Weasctsaecseesecaccae basa LOUVER OR VENTER 110 F REMOTE POOL HI LIMIT FIELD INSTALLED SENSOR LOCATED IN INLET OF BYPASS PIPING W DASHED LINE INDICATES RAC POMP OPTIONAL EQUIPMENT FIELD CHASSIS RELAY DELAY RELAY AC120VAC C
13. and air inlet pipe locally There is no vent kit for combined air supply systems for multiple pool heaters Make sure the air inlet cap is properly sized You must purchase this cap locally Venting of Flue Products For venting flue products vertically to the outdoors follow all requirements in the installation instructions for conventional venting in this manual Follow all clearance requirements in Vertical Vent Termination Clearances and Location page 10 17 A barometric damper is not required in the flue on Vertical DirectAire installations if the draft is within the negative 0 04 to 0 08 inches w c required for proper operation If the draft exceeds this range install a barometric damper TABLE D DirectAire Kits Horizontal Vertical Input Btu hr 500 000 650 000 750 000 990 000 1 260 000 1 440 000 1 800 000 2 070 000 Kit SVK3047 SVK3048 SVK3048 SVK3040 SVK3041 SVK3041 SVK3041 SVK3041 Kit VDK3026 VDK3027 VDK3027 VDK3023 VDK3024 VDK3024 VDK3024 VDK3024 The SVK kits include a DV box adapter and sidewall air inlet cap The VDK kits include a DV box adapter and a rooftop air inlet cap See note on page 12 concerning DV box adapter 3 Sidewall Venting IMPORTANT Before installing a venting system follow all venting clearances and requirements in the Venting General Information found section page 10 This option uses a powered vent assembly which pulls the flue product
14. heater 23 NOTE Modifications to the DV box adapter will be necessary to allow installation on the right side of the pool heater Follow the instructions shipped with the vent kit Attach the filter bracket assembly and DV box adapter to the right side opening using the pre drilled screw holes Make sure you attach the metal panel to the rear combustion air opening of the pool heater The DV box adapter has an air inlet pipe mounting ring Connect combustion air inlet piping to the direct vent box mounting ring Figure 25 Moving Air Filter Assembly and DV Box Adapter Air Inlet Piping Materials The air inlet pipe s must be sealed Select the air inlet pipe material from the following specified materials Galvanized steel vent pipe with joints and seams sealed as specified below Type B doublewall vent with joints and seams sealed as specified above WARNING Use only vent or air intake materials specified in this manual Follow vent pipe manufacturer s instructions Failure to do so can result in property damage personal injury or death Mixing of venting materials will void the warranty and certification of this pool heater Sealing Type B Doublewall Vent Pipe or Galvanized Vent Pipe Follow the steps below to properly seal Type B doublewall vent pipe or galvanized vent pipe 1 Sealall joints and seams of the air inlet pipe using either Commercial Pool Heaters INSTALLATION Continued aluminum foi
15. heater If gas supply pressure is within normal range turn the power switch to the OFF position Turn gas valve knobs to the OFF position Shut off gas supply at the manual gas cock in the gas piping to the pool heater If fuel supply is L P gas shut off gas supply at the tank Installation and Service Manual 13 Remove the manometer and related fitting from the inlet side of the gas valve replace 1 8 hex plug in the gas valve and tighten 14 Turn on the gas supply at the manual valve turn on L P gas at the tank if required 15 Turn the power switch to the position 16 Turn the gas valve knobs to the ON position 17 Set the temperature control to call for heat 1 8 HEX INLET PRESSURE TAP WARNING After completing any testing on the gas system leak test all gas connections Apply soap water solution to all gas connections while main burners are operating Bubbles forming indicate a leak Repair all leaks at once Do not operate this pool heater with a leak in the gas train valves or related piping Check burner performance by cycling the system while you Observe burner response Burners should ignite promptly Flame pattern should be stable see Burner Flames page 45 Turn system off and allow burners to cool then cycle burners again to ensure proper ignition and flame characteristics Figure 31 Measuring Gas Supply Pressure at Combination Gas Valve TABLE
16. DELAY GROUND 7 2 120V RELAY 24V TIME DELAY RELAY 7 2 120 CONNECTIONS CONNECTION DIAGRAM B FIELD Installation and Service Manual WIRING BOX CONNECTIONS 990 000 2 0 0 000 BIU HR MODELS CONTINUED MAIN UNIT CONNECTIONS MAIN UNIT IGNITER CONNECTOR T 599 PRESS GYG GY 276 M ex x AE x 5515 bz CHASSIS GROUND if II Jo GROUND BK WG P 12 2 OPTIONAL 0090 O BK RWG PA BK NO COM NC NOR WOE O _ O i B BLOWER 71 BLOWER Z2 A UO 1 25 T 2 PR 2 04 Printed U S A
17. FAILURE ENABLE RELAY SOFT START OPT TIMER STD WIRE HARNESS CONNECTIONS BREAKER DIAGNOSTIC STD TRANSFORMER STD TEMPERATURE CONTROLLER EL STD RUNTIME RELAY OPT LWCO WIRE HARNESS CONNECTIONS HIGH IGNITION MODULE LIMIT STD STD Figure 37 Control Panel Component Location Drawing 34 Installation and Service Manual Figure 38 B shows connections to the terminal strip for Remote ON OFF control of the pool heater The jumper must be removed when making these wiring connections This remote ON OFF control will provide an Enable Disable signal to the pool heater and allow the pool heater to operate based on the set point until the remote ON OFF signal is cancelled Figure 38 C shows the Continuous and Intermittent terminals External safety devices connected to these terminals will function to protect the pool heater Devices connected to the Intermittent terminals and B2 are monitored only when there is an active Call for Heat Devices connected to the Continuous terminals and 2 are monitored continuously and will activate and alarm if the pool heater is equipped with the alarm option anytime the safety device senses an abnormal condition An additional wire may be field installed from these safety devices to terminals A3 or B3 as appropriate to activate an audible alarm if the pool heater is equipped with the alarm option HEATDEM1 STAGE 1 A HEATDEM2 STAG
18. Pump Purge Delay Option Service Indicator Option Connecting to Electrical Supply Temperature Gauge Terminal Strip Connection Options Lighting Instructions To Turn Off Gas To Pool Heater Pre Start Checklist Starting the Filter System Operating Temperature Control Programming Mode Error Messages Displayed by the Temperature Control 38 Hot Surface Ignition System Operation and Diagnostic Lights Control of Condensate Formation and Water Velocity 41 Water Chemistry Pipe Size Requirements Circulating Pump Minimum Pump Performance Heat Exchanger High Water Temperature Limit Control High Water Temperature Limit Control Cleaning and Maintenance Heat Exchanger Cleaning Combustion and Ventilation Air Adjusting Differential Air Pressure Set Up Procedure Adjustment Procedure servicing Hot Surface Igniter and Ignition Module Ignition System Checkout Energy Saving Recommendations Sequence of Operation Wiring Diagram Installation and Service Manual GENERAL PRODUCT INFORMATION Special Instructions This manual supplies information for the installation operation and servicing of this pool heater Read and understand this manual completely before installing the pool heater Installation and service must be performed by a qualified service installer service agency or the gas supplier Unpacking Upon receiving equipment check for signs of shipping damage Pay particular attention to parts accompanying the pool hea
19. Use the National Fuel Gas Code venting tables for doublewall vent to properly size all vent connectors and stacks Follow the vent manufacturer s instructions when installing Type B vents and accessories such as firestop spacers vent connectors thimbles caps etc When planning the venting system avoid possible contact with plumbing or electrical wiring inside walls The maximum installed length of sidewall vent pipe with an induced draft fan must not exceed 50 feet 15 2m on the 990 000 2 070 000 Btu hr models or 100 feet 30 5m on the 500 000 750 000 Btu hr models Subtract 5 feet 1 5m for each 90 elbow Subtract 2 5 feet 0 7m for each 45 elbow Sidewall Venting Termination The sidewall vent cap must be installed on an exterior sidewall The sidewall fan powered sidewall vent cap and accessories are included in a venting kit which 15 furnished by the pool heater manufacturer in accordance with CSA International requirements This venting kit includes the powered sidewall fan cap proving switch and all necessary relays to interlock with the pool heater s control system The sidewall fan powered vent cap must be interlocked with the pool heater s control system to start the fan on a call for heat and prove fan operation before the pool heater fires Plug in and terminal strip connections are provided on the pool 18 heater for easy connection of the factory supplied vent kit and control package for the sidewall vent f
20. become hot during operation Be careful not to touch hot surfaces Keep all adults children and animals away from an operating pool heater Severe burns can occur This pool heater must have an adequate supply of fresh air during operation for proper gas combustion and venting 10 Make sure all exhaust venting is properly installed and maintained Improper venting of this pool heater could lead to increased levels of carbon monoxide 11 Do not use this pool heater if any part has been under water Immediately call a qualified service technician to replace the pool heater The possible damage to a flooded pool heater can be extensive and present numerous safety hazards Any appliance that has been under water must be replaced 12 Do not alter this pool heater in any way Any change to this pool heater or its controls can be dangerous Installation and Service Manual PRODUCT IDENTIFICATION Front View Rear View NOTE Standard horizontal piping loop shown Vertical piping Figure 1 Front and Rear View loop available as an option see Figure 42 J Commercial Pool Heaters INSIALLATION This pool heater meets the safe lighting performance criteria with the gas manifold and control assembly provided as specified in the ANSI 221 10 3 4 3 standard for gas fired water heaters LOCATING POOL HEATER 1 Maintain all clearances from combustible construction when locating pool heater See Clearances from
21. bleeds and vents to the atmosphere outside the building when required by local codes Connecting Gas Piping to the Pool Heater All gas connections must be made with pipe joint compound resistant to the action of liquefied petroleum L P and natural gases All piping must comply with local codes and ordinances Piping installations must comply with approved standards and practices 1 Make sure the gas line is a separate line direct from the meter unless the existing gas line is of sufficient capacity Verify pipe size with your gas supplier 2 Use new properly threaded black iron pipe free from chips If you use tubing make sure the ends are cut square deburred and clean Make all tubing bends smooth and without deformation Avoid flexible gas connections Internal diameter of flexible lines may not provide the pool heater with the proper volume of gas 3 For ease of service install a union 4 Install a manual main gas shutoff valve at the pool heater s gas inlet outside of the pool heater in accordance with the National Fuel Gas Code ANSI Z223 1 this must be installed within 6 feet of the pool heater GROUND MANUAL MAIN SHUT USE WRENCH TO HOLD PIPING Figure 29 Gas Line Connection 5 Run pipe or tubing to the pool heater s gas inlet If you use tubing obtain a tube to pipe coupling to connect the tubing to the pool heater s gas inlet 6 Install a sediment trap in the supply l
22. dial type temperature gauges These gauges are factory installed in the inlet and outlet sides of the heat exchanger The gauges read water temperature in F These are provided to allow set up and checking of the temperature rise across the heat exchanger The pump must run continuously when the pool heater is being fired 4 To avoid serious damage do not energize the pool heater until the system is filled with water 5 Provide the pool heater with the proper overload protection TABLE N Remote Wire Connection Wire Maximum Gauge Allowable Length IMPORTANT Do not block access to the electrical cover plate when installing electrical conduit Refer to Circulating Pump on page 43 for information relating to pump wiring TABLE M AMP Draw Data Terminal Strip Connection Options Btu Hr Approximate The scenarios shown in Figure 38 represent typical terminal Input Controls Total Amps strip connection requirements The terminal strips are located on the left side of the pool heater under the electrical access 500 000 3 6 2 7 6 3 panel Other applications may be accommodated but must be 650 000 5 4 3 4 8 8 addressed individually 750 000 5 4 3 4 8 8 990 000 7 3 3 2 10 5 Figure 38 A shows the position of the jumpers as shipped from 1 260 000 7 3 22 10 5 the factory for stand alone operation of the pool heater 1 440 000 1 3 6 7 14 0 1 800 000 7 3 6 7 14 0 2 070 000 7 3 6 7 14 0 ALARM ENABLE RELAY OPT FLAME
23. flashing cursor in the middle This indicates that the value shown 15 for the Pool 2 differential setting Pressing the Up or Down keys will change this value for the Pool 2 differential setting Once all changes have been made 10 seconds of inactivity will cause the control to exit programming mode Commercial Pool Heaters OPERATION Continued POOL 1 POOL 2 SELECT Figure 44 Temperature Control Display and Programming Keys Specifications Set Point Adjustment Range 55 F up to 105 F 13 C up to 4190 Differential Adjustment Range 1 F up to 20 F 1 C 11 C Temperature Accuracy 1 F e Display Resolution 1 F via Liquid Crystal Display LCD Sensor Thermistor 10k ohms 77 F 25 C Operating Humidity lt 90 RH Non condensing Operating Ambient Temperature 20 to 140 F 30 to 6090 The temperature control is located behind the overlay on the pool heater Three programming keys are provided to adjust the temperature set points and differential values and to control the display The three keys are the Select key Up arrow key and Down arrow key Select Key Allows the user to select the currently displayed temperature set point used for operation of the pool heater Pool temperature settings or OFF may be selected by depressing the Select key in normal operation A pointer will move in the display window to indicate the temperature mode selected for operation When the OFF p
24. for outdoor installation This is a high efficiency pool heater which requires a special pumped bypass for proper operation This bypass assembly and the required pump are pre installed on the pool heater as shipped from the factory All piping to connect to the filter system to the pool heater is made directly to the bypass piping on the pool heater The pump supplied on the pool heater bypass has a sealed motor suitable for outdoor installations electrical wiring to the pump must comply with local code requirements POOL STAT SENSOR COPPER OR CPVC 2 1 2 PVC MIN FROM FILTERS TO POOL SENSOR Figure 33 Pool Heater Piping Diagram Commercial Pool Heaters INSTALLATION Continued POOL STAT SENSOR COPPER OR CPVC 2 1 2 PVC MIN FROM FILTERS Figure 34 Pool Heater Piping Diagram POOL STAT SENSOR 2 1 2 PVC MIN 4 PVC MIN POOL STAT SENSOR FROM FILTERS Figure 35 Typical Pool Heater Piping Detail for Multiple Units with Less than 40 Piping for Each Pool Heater POOL HEATER B 7 POOL STAT POOL STAT SENSOR POOL HEATER A LIMIT A SENSOR 4 eo Figure 36 Typical Pool Heater Piping Detail for Multiple Units with More than 40 Piping for each Pool Heater 32 Installation and Service Manual Relief Valve This pool heater is supplied with a relief valve s sized in accordance with ASME Boiler and Pressure Vessel Code Section IV The relief valve
25. higher than on initial cold startup TABLE Q Temperature Rise Chart Btu hr Input 500 000 650 000 750 000 990 000 1 260 000 1 440 000 1 800 000 2 070 000 Temperature Rise F 42 Water Chemistry Factors which affect pool water and more importantly the efficiency of your new pool heater are Proper Filtration Proper Circulation Disinfection and Oxidation pH Control and Total Alkalinity Algae Control eR The water chemistry of your pool changes daily due to natural evaporation of the water and the addition of chemicals Chemicals are used to sanitize and control algae growth in the pool Their addition must be carefully monitored If there 1s an imbalance in the pool water chemistry the minerals in the pool water will precipitate out and collect in the pool filter system and the pool heater The accumulation of minerals or scale in the pool heater due to a chemical imbalance will cause a non warrantable failure of the heat exchanger and its components pH is an important factor in maintaining proper balance in your pool water pH is the measurement of the acidity or alkalinity of water The following chart shows the recommended range and what can happen when the pH increases or decreases from the ideal of 7 2 to 7 8 pH Scale CORROSION SCALING HEAT AREA AREA HEAT EXCHANGERS EXCHANGERS DESTROYED DESTROYED 01234567 8 9 10 fl 12 13 14 LOW pH HIGH pH ACID ALKALINE
26. module will attempt a new trial for ignition sequence If the soft lockout fault condition has subsided or has been corrected at the end of the timed pause main burner ignition should be achieved with the resumption of the normal trial for ignition sequence If the control sensed fault is not corrected the ignition module will continue in the soft lockout condition If the thermostat opens during the soft lockout period the ignition module will exit soft lockout and wait for a new call for heat from the thermostat A soft lockout condition may also be reset by manually cycling the thermostat or turning the main power switch OFF and then after the control sensed fault has been corrected Diagnostic Status Indication The ignition module has an LED which indicates the status of the safety circuits A remote Ignition Module Status indicating light is wired from the ignition module Status LED and mounted on the front control panel The flashing operation of this light LED indicates the diagnostic status of the ignition control module The status LED mounted on the ignition module flashes a code sequence from the Ignition Module to indicate the status of the ignition process See TABLE O for the flashing diagnostic status codes as signaled by the ignition module Commercial Pool Heaters OPERATION Continued TABLE O Ignition Control Diagnostic Codes Code Sequence Condition Constant ON System OK no faults present Con
27. s is installed in the vertical position and mounted in the hot water outlet Place no other valve between the relief valve and the pool heater To prevent water damage pipe the discharge from the relief valve to a suitable floor drain for disposal when relief occurs Do not install any reducing couplings or other restrictions in the discharge line The discharge line will allow complete drainage of the valve and line Manually operate the relief valves at least once a year CAUTION Avoid contact with hot discharge water Automatic Chlorinator and Chemical Feeders chemicals must be diluted into the pool water being circulated through the pool heater Any concentration of chlorine in the pool heater can cause damage to the pool heater Do not place chlorine tablets or bromine sticks in the skimmer High chemical concentrations will result when the pump is not running Chlorinator must feed downstream of the pool heater and have an anti siphoning device to prevent chemical back up in the pool heater when the pump is shut off IMPORTANT High chemical concentrations from improperly adjusted feeders and Chlorinator can cause rapid corrosion to the heat exchanger This damage is non warrantable Water Flow Switch A water flow switch is available as a factory option The flow switch is wired in series with the factory installed water pressure switch This wiring connection installs the flow switch in the 24 VAC safety ci
28. sealed AL29 4C vents and accessories such as firestop spacers vent connectors thimbles caps etc Provide adequate clearance to combustibles for the vent connector and firestop When planning the venting system avoid possible contact with plumbing or electrical wiring inside walls ceilings and floors Locate the pool heater as close as possible to the chimney or gas vent When a vent system is disconnected for any reason the flue must be reassembled and resealed according to the vent manufacturer s instructions The installed length of flue from the pool heater to the outside point of termination must not exceed 50 equivalent feet 15 2m Subtract 5 feet 1 5m of equivalent length for each 90 elbow Subtract 2 5 feet 0 7m of equivalent length for each 45 elbow Masonry Chimney Installation Do not use a standard masonry chimney to directly vent the combustion products from this pool heater To use a masonry chimney the chimney must use a sealed corrosion resistant liner system Sealed corrosion resistant liner systems singlewall doublewall flexible or rigid must be rated for use with a high efficiency positive pressure vent system Corrosion resistant chimney liner systems are typically made from a high grade stainless steel such as AL29 4C The liner must be properly sized and fully sealed throughout the entire length Both the top and bottom of the masonry chimney must be capped and sealed to provide a dead air
29. seconds Main Burner Flame Establishing Period 4 Seconds Failure Response Time 0 8 Seconds at less than 0 5 uA flame current Flame Current 5 15 uA Post purge 30 Seconds Optional Pump Delay Timing 30 Seconds after burner shutdown OPERATION AND DIAGNOSTIC LIGHTS The control panel has six indicating and diagnostic lights to show all major steps of operation and control sensed malfunctions Installation and Service Manual nini Figure Operation Diagnostic Lights and LCD Display POOL 1 POOL 2 47 Exterior Control Panel TABLE P Status LED Diagnostic Codes Code Sequence Condition Lights Prepurge Operation of combustion air fans before ignition Trial for Ignition Hot surface igniter 1 preparing to light burners Heating Burners operating Service if equipped Service Indicator when option purchased Indicates flame failure on either ignition module and will indicate additional alarms if the alarm of any failure option is purchased Alarm Control of Condensate Formation and Water Velocity IMPORTANT To control condensate formation and ensure proper velocity through the heat exchanger you must regulate the inlet water temperature and temperature rise across the heat exchanger Temperature rise is the difference between inlet and outlet water temperature across the heat exchanger in the pool heater with 41 This adjustment procedure must be f
30. space around the liner WARNING Do not vent this pool heater into a masonry chimney without a sealed stainless steel liner system Any breaks leaks or damage to the masonry flue tile will allow the positive pressure flue products to leak from the chimney and into occupied living spaces This could cause serious injury or death due to carbon monoxide poisoning and other harmful flue products IMPORTANT Check with local code officials to determine code requirements or the advisability of using a masonry chimney with a sealed corrosion resistant liner system Sidewall Vent Termination Clearances and Location Follow all sidewall venting termination information for clearances and location under Sidewall Vent Termination Clearances and Location page 11 Commercial Pool Heaters INSTALLATION Continued TABLE E Sidewall Vent Kits Vent Termination Only Length Kit w Power Fan Assy Input Btu hr 500 000 750 000 Btu hr SVK3006 SVK3008 SVK3008 SVK3009 SVK3010 SVK3010 1 800 000 SVK3012 N A 2 070 000 SVK3012 N A These kits include a sidewall venter assembly vent termination and barometric damper SVK3043 SVK3044 SVK3044 N A N A N A 500 000 650 000 750 000 990 000 1 260 000 1 440 000 Pool heaters not equipped with this option will require Field Conversion Kit 3016 4 Horizontal DirectAire Venting IMPORTANT Before installing a venting system follow all venting clearance
31. uses a powered vent assembly to exhaust the flue products out a sidewall Combustion air is supplied by a pipe from the sidewall See page 20 for venting details 5 Direct Venting This option uses a sealed AL29 4C flue and a separate combustion air pipe to the outdoors This system terminates both the flue and combustion air inlet in the same pressure zone The flue outlet and combustion air intake may terminate at either a sidewall horizontal or the rooftop vertical See page 21 for venting details 6 Outdoor Installation Venting This option uses the installation of a special air inlet vent cap on top of the pool heater See page 25 for venting details pool heaters are shipped from the factory equipped for conventional negative draft venting All other optional vent systems require the installation of specific vent kits and venting materials The following is a detailed explanation of the installation requirements for each venting system components used and part numbers of vent kits for each model 14 Barometric Damper Location Any venting system option that requires a barometric damper must adhere to the following directions for optimum performance The preferred location for the barometric damper is in a tee or collar installed in the vertical pipe rising from the pool heater s flue outlet The barometric damper MUST NOT be installed in a bull head tee installed on the pool heater s flue outlet The tee or collar con
32. 0 000 750 000 Btu hr models and the 990 000 2 070 000 Btu hr models use a fan assisted combustion process The 500 000 750 000 Btu hr models have one fan and the 990 000 2 070 000 Btu hr models use two fans to supply combustion air to the burners Fan Cleaning Check each combustion air fan every six months Clean the fan as required when installed in a dusty or dirty location Oiling is not required Combustion Air Fan Adjustment The combustion air fans are factory pre set and should not need adjustment in most cases Follow the steps below to adjust the fan if a continuous Low Air status code occurs NOTE the 500 000 750 000 Btu hr models the air shutter is adjusted on the side of the fan duct as depicted in Figure 50 On the 990 000 2 070 000 Btu hr models the air shutter is adjusted on the rear of the fan duct as depicted in Figure 52 Check for proper installation and draft in the venting system Correct as required The following pressure settings are for installations up to 2000 feet altitude Contact the factory for high altitude air pressure settings Adjusting Differential Air Pressure The following is a recommended method for setting the differential air pressure for each fan 46 Figure 50 Adjusting Air Shutter 500 000 750 000 Btu hr Installation and Service Manual Ta 1 a RN 1 77 Li OE lt E
33. AC to the gas valves on approximately half of the pool heater These gas valves should open and allow gas to flow to the burners The fuel air mixture should ignite from the hot surface igniter Once this voltage has been sent to the valves the hot surface igniter is turned OFF The ignition module then monitors and proves presence of the flame and will either allow operation to continue or shut down the gas valves should flame not be proven and proceed to a Flame Failure condition If flame was proven briefly during the ignition period the module may not proceed to Flame Failure but rather post purge and then go into another trial for ignition TIME DELAY RELAY BOARD Controlled by Temperature Controller and Ignition Module A small time delay is provided to delay the opening of approximately half of the valves until the first half of the valves have opened and the gas has successfully ignited and established flame on the burners HEAT TRANSFER PROCESS Gas Valves Burner and Heat Exchanger Once flame has been proven the ignition module will hold the gas valves open as long as there is proof of flame and a call for heat is present When the temperature of the water reaches that of the programmed set point the pool heater will be shut down POST PURGE Ignition Module Function When 24VAC is removed from the ignition module s thermostat input the module turns OFF the gas valves and maintains the blowers for approximat
34. C Nat Gas LP Gas MANIFOLD PRESSURE Measure manifold pressure at the pressure tap on the downstream side of the combination gas valves The gas regulator on the pool heater s combination gas valves is preset at the factory to supply proper manifold pressure for normal operation See TABLE L for net manifold pressure settings If you must adjust regulator pressure follow the instructions under Gas Manifold Pressure Adjustment page 30 Do not increase regulator pressure beyond specified pressure setting Gas Pressure Test 1 Disconnect the unit from the gas supply piping system during any piping system pressure testing greater than 1 2 PSIG 3 5kPa Installation and Service Manual 2 Isolate the pool heater from the gas supply piping system by closing a manual shutoff valve during any piping system pressure testing that is equal to or less than 1 2 PSIG 3 5kPa 3 Test all gas connections for gas leaks before placing the pool heater in operation Gas Piping To safely operate this pool heater you must properly size the gas supply piping See Tables J and K for piping and fitting requirements Gas pipe size may be larger than pool heater connection The gas connection to these pool heaters is 2 NPT IMPORTANT Do not block access to the electrical cover plate when installing the sediment trap The sediment trap must be a minimum of 12 inches from the pool heater Optional gas controls may require routing of
35. CPE i amp s 02 INSTALLATION AND SERVICE MANUAL WARNING Do not use this pool heater if any part has been under water The possible damage to a flooded pool heater can be extensive and present numerous safety hazards Any pool heater that has been under water must be replaced GAS HEATERS FOR COMMERCIAL POOL APPLICATIONS 500 000 2 070 000 Btu hr MODELS WARNING Improper installation adjustment alteration service maintenance can cause property damage personal injury exposure to hazardous materials loss of life Refer to this manual Installation and service must be performed by a qualified installer service agency or the gas supplier This pool heater contains materials that have been identified as carcinogenic or possibly carcinogenic to humans CERTIFIED WARNING the information in this manual is not followed exactly a fire or explosion may result causing property damage personal injury or loss of life This appliance MUST NOT be installed in any location where gasoline or flammable vapors are likely to be present unless the installation is such to eliminate the probable ignition of gasoline flammable vapors WHAT TO DO IF YOU SMELL GAS e Do not try to light any appliance Do not touch electric switch do not use any phone in your building Immediately call your gas supplier from a neighbors phone Follow the gas supplier s ins
36. Clearances and Location page 11 Installation and Service Manual For proper operation a barometric damper is provided for Horizontal DirectAire installations The damper will help to ensure a draft between negative 0 04 to 0 08 inches w c TABLE F Horizontal DirectAire Kits Input Btu hr 500 000 HDK3031 HDK3032 HDK3032 HDK3026 HDK3027 HDK3027 HDK3028 HDK3028 650 000 750 000 990 000 1 260 000 1 440 000 1 800 000 2 070 000 These kits include a sidewall venter assembly vent termination DV box adapter sidewall air inlet cap and a barometric damper See note on page 12 concerning DV box adapter 5 Direct Venting IMPORTANT Before installing a venting system follow all venting clearances and requirements in the Venting General Information found section page 10 This option uses sealed AL29 4C vent materials for the flue outlet piping and separate combustion air inlet piping This system terminates both the flue and combustion air inlet in the same pressure zone The flue outlet and combustion air intake may terminate at either a sidewall or the rooftop To use the optional Direct Vent system you must install specific vent kits and venting materials The following is a detailed explanation of Direct Vent installation requirements including the components used and vent kit part numbers Flue Outlet Piping Venting Guidelines If using this venting option a sealed AL29 4C ve
37. Combustible Construction this page 2 Locate the pool heater so that if water connections should leak water damage will not occur When such locations cannot be avoided install a suitable drain pan that 1s well drained under the pool heater The pan must not restrict combustion air flow The pool heater manufacturer 15 not responsible for water damage in connection with this pool heater or any of its components 3 Install the indoor pool heaters so that the ignition system components are protected from any water while operating or during service 4 You must install the pool heater on a level non combustible floor 5 Do not install pool heater directly on carpet or other combustible material concrete over wood floor is not considered non combustible Maintain required clearances from combustible surfaces If installing the pool heater in an area with a combustible floor you must construct a special combustible floor base See Base for Combustible Floors this page 6 For outdoor models you must install an optional vent cap Instructions for mounting the vent cap are included in the venting section Do not install outdoor models directly on the ground You must install the outdoor pool heater on a concrete brick block or other non combustible pad Outdoor models have additional special location and clearance requirements See Outdoor Installation Venting page 25 A wind proof cabinet protects the pool heater from weather
38. E 2 STAGE3 STAGE 4 QA CX 42192 1NO 2C 2NO 4C CONTINUOUS INTERMITTENT 2 1 71 w 6 2 NOT USED ON POOL HEATER INO 2C 2NO 3C 4C CONTINUOUS INTERMITTENT 2 35 1 5 1 HEATDEM2 STAGE 2 STAGE 3 STAGE 4 2C 2NO 4C CONTINUOUS INTERMITTENT m CONTINUOUSLY INTERMITTENTLY MONITORED MONITORED EXAMPLE DEVICES HIGH LOW GAS AUX HI LIMIT AUX LIMITS EXT FLOW SWITCH C Figure 38 A C Terminal Strip Connection OPERATION FOR YOUR SAFETY READ BEFORE OPERATING WARNING If you do not follow these instructions exactly a fire or explosion may result causing property damage personal injury or loss of life A This pool heater does not have a pilot It is equipped with an ignition device which automatically lights the burner Do not try to light the burner by hand B BEFORE OPERATING smell around the pool heater area for gas Be sure to smell next to the floor because some gas is heavier than air and will settle to the floor WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance Do not touch any electric switch do not use any phone in your building Immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions If you cannot reach your gas supplier ca
39. K Multiple Unit Installations Gas Supply Pipe Sizing Nominal Iron Length of Pipe In Straight Feet Pipe Size Inches 1 90 100 125 150 175 200 0 20 30 40 50 60 70 80 s 3 8 28 28 Lum pneum pue pss pre per pe pes Maximum capacity of pipe in thousands of per hour for gas pressures of 14 Inches Water Column 0 5 PSIG or less and a total system pressure drop of 0 5 Inch Water Column Based on NAT GAS 1025 BTU s per Cubic Foot of Gas and 0 60 Specific Gravity 29 Commercial Pool Heaters Gas Manifold Pressure Adjustment IMPORTANT The gas valves are referenced to the fan pressurized chamber by a hose connected from the vent of the gas valve regulator to the chamber pressure tap located on the front inside portion of the jacket Reference the drawings in this section for component and connection points for pressure measurement Remove the 1 8 hex plug from the manifold pressure tap on the gas valve see Figure 32 Retain plug for future use Install a fitting in this tap that is suitable for connection of a hose to a manometer or side of a magnahelic gauge see Figure 32 Turn the power switch to the or ON position The procedure for connecting a manometer or Push the reset button s for the ignition control s if necessary magnahelic must be followed to obtain actual net manifold pres
40. NG BOX LBL2185 Rev 56 Installation and Service Manual 7 2 CONIROL BOX CONNECTIONS 990 000 BIU HR MODELS 070 000 J33XV3u8 LINDYIO 09 Lc 181 uir MORES N __ aria ESI OOMT KINnONO OVAOCL Oz ELE HOLIMS 1531 01 l 4 MSSL S3HO IMS 13538 i 9 NvW OInvOL HH s m L E wl a OOM OVAYC 1 nomm h Ave AV T38 AWILNAY ____ d 6 9 HOJO3NNOO d3MOd OV LIBERA YOLOANNOO NIV 14 YOLVOICNI 30835 3ound HOLIMS 44O NO i 9314 1703 TWNOlLdO AT HIE TINGOW 1 H OVAYC a 18 19534 T gt gt YOLOANNOD N LIN7HHS V INVHOVIO NOILOANNOO 4 TWNOILdO Ave Ave 1IV3 13 Wav Vv A qaaav
41. ONNECTIONS CONNECTION DIAGRAM B OPTIONAL LWCO PROBE zi POWER SWITCH _ OPTIONAL LOUVERIVENTER ALARM TIME DELAY 120V RELAY 244 TIME DELAY RELAY NOTE WHEN REPLACING DAMAGED WIRING USE EQUIVALENT TYPE AND GAUGE 54 Installation and Service Manual WIRING BOX CONNECTIONS WIRING DIAGRAM B 500 000 750 000 BTU HR MODELS CONTINUED MAIN UNIT CONNECTIONS D IGN MOD IGNITER MAIN UNIT CONNECTOR CONNECTOR eee GAS PRESSURE CHASSIS GROUND BLOWER L 1 STAGE 1 HI WEWHITE BK BLACK Y YELLOW PR PURPLE BR BROWN AIR SWITCH R m GY GRAY 7 R RED m EXAMPLE BURNER YELLOW WITH GREEN STRIPE HSI GROUND GY ay G 22 Rev Commercial Pool Heaters SCHEMATIC DIAGRAM 990 000 2 070 000 BTU HR MODELS OPTIONAL 120VAC Lwco TEST SWITCH m AUTOMANUAL RESET Li 1 BK _ EINE 120 VAC 15AMPS NEUTRAL 120 GROUND VAC BK W ON OFF 1 WARNING THIS HEATER MAY BE G an BESET
42. P Gas Net Manifold Pressure equals the measured manifold pressure minus the chamber pressure See Figure 32 to measure the Net Manifold Pressure POOL HEATER PIPING INSTALLATION Install piping from the filter system to the pool heater as shown in the pool heater piping diagrams See Figures 33 and 34 Minimum pipe diameter to and from the installed pool heater to the filter system piping is 2 1 2 A valve should be installed in the filter system piping between the supply and return piping connections for the pool heater This valve can be partially closed to divert a portion of the filter system flow to the pool heater so it can be heated added to the filter system piping and returned to the pool The piping from the filter system to the pool heater may be PVC CPVC or Copper Pipe The piping from the pool heater back to the filter system will carry water with temperatures in excess of 1109 and must be CPVC or Copper Pipe The temperature of the heated water from the pool heater will be substantially cooled as it is mixed back into the pool water from the filter system and returned to the pool The mix of heated water and pool water from the filtration system should only be slightly warmer than the pool water before the connections from the pool heater Auxiliary Mixed Water Limit Control Ensure that the auxiliary 110 F mixed water limit control supplied with the pool heater is installed in the filter system piping a minimum of t
43. Pool Heater Piping 37 Figure 43 Horizontal Pool Heater Piping OPERATING TEMPERATURE CONTROL The pool heater is equipped with a microprocessor based adjustable digital temperature control to provide ON OFF operation Operation is based on temperature input from an immersion sensor The immersion temperature sensor senses inlet water temperature to the pool heater and is factory installed in a bulbwell in the inlet piping to the pool heater upstream of the bypass See Figures 42 and 43 The digital control allows two temperature set points to be programmed into the control one for normal pool operation Pool 1 and one for special pool operation Pool 2 The sensor is a negative coefficient platinum thermistor liquid crystal display is provided to indicate sensed temperature and operating parameters A differential setting may be applied to each of the pool temperature settings Once entering the programming mode see Programming Mode on page 38 pressing the Select key once will move the cursor on the display to the middle and a separate cursor will display under Pool 1 and Pool 2 The cursor will be flashing in the middle and a separate cursor will display under Pool 1 This indicates that the value shown 15 for the differential for the Pool 1 setting Pressing the Up or Down keys will change this value for the Pool 1 differential setting Pressing the Select key two more times will move the cursor under Pool 2 and a separate
44. The breaker is located inside the pool heater on the right rear of the control panel Power from this breaker goes to the temperature controller ignition module and various other components and or options on the pool heater When tripped all factory installed 24VAC components will lose their 24VAC power MANUAL RESET HIGH LIMIT THERMOSTAT A manual reset high limit thermostat is provided as backup for the auto reset high limit This is an adjustable dial bulb capillary style thermostat that will trip and require resetting should water temperature exceed its settings When tripped all controls remain powered but 24VAC is prevented from being delivered to the ignition module s thermostat input EMS SEQUENCER REMOTE AQUASTAT TERMINALS The EMS sequencer remote aquastat terminals are provided for connection of the pool heater to an external energy management system or sequencer and are located along the top edge of the terminal strip located within the electrical wiring box In addition to providing a means to externally fire the pool heater these terminals also provide for remote shutdown by routing through dry contacts from external devices Connection of the external dry contacts to these terminals requires the removal of one or more factory installed jumpers located on the terminal strip SAFETY DEVICE TERMINALS The safety device terminals ensure that no power can be delivered to the ignition module unless factory field installed saf
45. a of all air inlet pipes connected to the common air inlet This exterior opening for combustion air must connect directly to the outdoors The total length of the combined air inlet pipe must not exceed a maximum of 50 15 2m equivalent feet You must deduct the restriction in area provided by any screens grills or louvers installed in the common air inlet openings and some rooftop terminations Screens grills or louvers installed in the common air inlet can reduce the free area of the opening from 25 to 75 based on the materials used Vertical and Sidewall Combustion Air Inlet IMPORTANT To prevent recirculation of flue products into the combustion air inlet follow all instructions in this section N WARNING Locate and install the combustion air inlet termination correctly Failure to do so can allow the discharge of flue products to be drawn into the combustion process This can result in incomplete combustion and potentially hazardous levels of carbon monoxide in the flue products This will cause operational problems and the spillage of flue products Spillage of flue products can cause personal injury or death due to carbon monoxide poisoning You must locate the combustion air cap and the flue gas outlet on the same rooftop surface vertical direct vent system or sidewall surface horizontal direct vent system and in the same pressure zone as the vent termination Follow all clearance requirements listed on p
46. able from 1 100 seconds Selection of 60 seconds is recommended An override toggle switch is provided to turn off the pump purge feature for testing or should the option no longer be desired When turned off the call for heat will not be delayed NOTE The pump post purge feature will continue to function in the Override Mode Service Indicator Option A service indicator option is available for this pool heater When 500 hours of operation have occurred the Service Indicator light on the Diagnostic Information Panel will light up indicating service should be conducted Contact a qualified serviceperson to perform service on the pool heater CONNECTING TO ELECTRICAL SUPPLY This pool heater is wired for 120 VAC service The pool heater when installed must be electrically grounded in accordance with the requirements of the authority having jurisdiction or in the absence of such requirements with the latest edition of the National Electrical Code ANSI NFPA No 70 When the pool heater 15 installed in Canada it must conform to the CAE C22 1 Canadian Electrical Code Part 1 and or local Electrical Codes 1 Use only Type T wire 63 F 35 C rise on all wiring between the pool heater and field installed devices 2 Enclose line voltage wire exterior to the pool heater in approved conduit or approved metal clad cable Commercial Pool Heaters INSTALLATION Continued Temperature Gauge 3 This pool heater is equipped with two
47. ages 8 and 9 Purchase and assemble the combustion air inlet cap to protect the air inlet from wind and weather Alternatively assemble the combustion air inlet cap for the vertical rooftop air inlet from items purchased locally The air inlet cap consists of two 90 elbows installed to the air inlet pipe see Figure 26 Install the first 90 elbow on the rooftop at the highest vertical point of the air inlet pipe Install the second 90 elbow on the horizontal outlet of the first elbow The outlet of the second 90 elbow will be pointing down You may use a 90 elbow and 90 street elbow to make this assembly If you use a straight piece of pipe between the two 90 elbows it should not exceed 6 51mm in length 6 MAXIMUM Figure 26 Vertical Rooftop Air Inlet For horizontal direct vent termination of combustion air you must use the termination cap from the pool heater manufacturer The sidewall air inlet cap is available as part of a direct vent kit See TABLE G for Horizontal Direct Vent Kits Installation and Service Manual Vertical Combustion Air Inlet Clearances You must locate the air inlet termination elbow at least 12 30cm above the roof or above normal snow levels If the air inlet cap is within a 10 foot 3 05m radius of the flue outlet the point of termination for the combustion air inlet cap must be at least 3 feet 0 91m below the point of flue gas termination vent cap Do not in
48. air inlet for side entry follow the steps fans clothes dryers compressors air handling units etc may take away air from the pool below heater 1 th tal f th heater s sid e euin ies ipu s e pool heater has four combustion air options see Figure 4 2 Remove screws from the air filter bracket assembly 1 Outside Combustion Air No Ducts 3 Move the filter bracket assembly from the rear of the pool You can direct outside combustion air to this pool heater using heater to the side opening see Figure 5 either one or two permanent openings 4 Attach the filter bracket assembly to the pool heater s side using the pre drilled screw holes One Opening 5 Attach the metal panel to the rear combustion air opening The opening must have a minimum free area of one square to seal it off inch per 3000 Btu input 7 per kW You must locate this opening within 12 30cm of the top of the enclosure Figure 6 Outside Combustion Air Single Opening Figure 4 Metal Panel Covering Side Combustion Air Inlet Two Openings The combustion air opening must have a minimum free area of one square inch per 4000 Btu hr input 5 5cm per kW You must locate this opening within 12 30cm of the bottom of the enclosure The ventilation air opening must have a minimum free area of one square inch per 4000 Btu hr input 5 5cm per kW You must locate this opening within 12 30cm of the top of the lt gt
49. an See the installation instructions provided with the vent kit Sidewall Venting Without Fan For 500 000 750 000 Btu hr models approved for sidewall venting without an external power vent fan you must install specific vent kits and venting materials The following is a detailed explanation of Sidewall Venting Without an External Fan installation requirements Flue Outlet Piping Venting Guidelines If using this venting option a sealed AL29 4C venting system for flue products is required on all models of this pool heater This venting system operates with a positive pressure in the vent The internal combustion air blowers generate this positive pressure which operates the combustion process and also exhausts the flue products from the building This vent system has specific vent material and installation requirements Only use listed sealed AL29 4C vent system materials Follow all installation requirements See TABLE B page 11 for proper pipe size for your pool heater A list of sealed AL29 4C flue pipe manufacturers is located on page 22 Seal all vent joints and seams gas tight Drain Tee Installation A drain tee must be installed in the vent pipe to collect and dispose of any condensate that may occur in the vent system The drain tee must be installed as the first fitting after the horizontal ell on the top of the unit see Figure 22A Plastic drain tubing sized per the vent manufacturer s instructions shall be prov
50. and requirements found in the Venting General Information section page 10 These pool heaters are self venting and can be used outdoors when installed with the optional outdoor cap This cap mounts directly to the top of the pool heater and covers the flue outlet and combustion air inlet openings No additional vent piping is required 25 WARNING Only install outdoor models outdoors and only use the vent cap supplied by the pool heater manufacturer Personal injury or product damage may result if any other cap is used or if an outdoor model is used indoors Properly install all covers doors and jacket panels to ensure proper operation and to prevent a hazardous condition Combustion air supply must be free of contaminants see Combustion and Ventilation Air page 7 To prevent recirculation of the flue products into the combustion air inlet follow all instructions in this section Outdoor Vent Air Inlet Location Keep venting areas free of obstructions Keep area clean and free of combustible and flammable materials Maintain a minimum clearance of 3 76mm to combustible surfaces and a minimum of 3 76mm clearance to the air inlet To avoid a blocked air inlet or blocked flue condition keep the outdoor cap air inlet flue outlet and drain slot clear of snow ice leaves debris etc Do not install outdoor models directly on the ground You must install the outdoor pool heater on a concrete brick block or ot
51. ate may experience freezing due to convective airflow in the air inlet pipe Length of Air Inlet Pipe The installed length of air inlet pipe from the pool heater to the outside air inlet cap must not exceed 50 equivalent feet 15 2m Subtract 5 feet 1 5m of equivalent length for each 90 elbow Subtract 2 5 feet 0 7m of equivalent length for each 45 elbow Do not exceed the limits for the combustion air inlet piping lengths Connecting the Air Inlet Pipe to the Pool Heater Connect the air inlet piping directly to the pool heater by attaching it to the DV box adapter The DV box adapter is included in the direct vent kits for horizontal direct vent For vertical direct vent order the DVK3003 kit from the pool heater manufacturer The combustion air inlet area of the pool heater is located at the right rear corner of the pool heater This pool heater uses a simple air filter to ensure clean air is used for the combustion process Attach the DV box adapter over the air filter see Figure 24 Align the screw holes on the DV box adapter with the screw holes surrounding the air filter hanger Insert the sheet metal screws and tighten firmly Figure 24 Attaching DV Box Adapter to Unit For venting versatility you can move the air filter assembly and DV box adapter to the right side of the pool heater Remove the metal panel on the pool heater s right side see Figure 25 Remove the filter bracket assembly from the rear of the pool
52. ations Do not use an existing chimney as a raceway if another appliance or fireplace is vented through the chimney The weight of the venting system must not rest on the pool heater Provide adequate support of the venting system Follow all local and applicable codes Secure and seal all vent connections Follow the installation instructions from the vent material manufacturer Vertical Vent Termination Clearances and Location The vent terminal should be vertical and exhaust outside the building at least 2 feet 0 61m above the highest point of the roof within a 10 foot 3 05m radius of the termination The vertical termination must be a minimum of 3 feet 0 91m above the point of exit A vertical termination less than 10 feet 3 05m from a parapet wall must be a minimum of 2 feet 0 61m higher than the parapet wall You must locate the air inlet termination elbow at least 12 30cm above the roof or above normal snow levels 10 Keep the vent cap clear of snow ice leaves and debris to avoid blocking the flue 10 OR LESS RIDGE CHIMNEY Figure 10 Vent Termination from Peaked Roof 10 or Less From Ridge IMPORTANT Vent terminations are not shown in Figures 10 11 12 and 13 Make sure all vertical vents are installed with vent terminations recommended by the vent manufacturer MORE THAN 10 10 2 MIN N RIDGE 3 MIN CHIMNEY Figure 11 Vent Terminat
53. cial Pool Heaters CLEANING AND MAINTENANCE Continued Figure 53 Combustion Air Adjustment with a Manometer to Set Differential Pressures Servicing Hot Surface Igniter and Ignition Module This pool heater uses a proven hot surface ignition control module and a hot surface igniter The hot surface ignition module is not repairable Any modification or repairs will invalidate the warranty WARNING Do not attempt to repair a faulty hot surface igniter or ignition module Any modification or repairs may create hazardous conditions that result in property damage personal injury fire explosion and or toxic gases A faulty hot surface igniter or ignition module must be replaced with an identical part A specification igniter and ignition control module for this specific pool heater is available from your local distributor Do not use general purpose field replacement ignition modules or igniters gnition System Checkout Turn the gas supply to the pool heater Turn the electric power ON 3 Program the temperature control to settings above water temperature or to the highest safe setting 4 The igniter will cycle on trial for ignition 5 The ignition module will lock out and turn the alarm light on 6 Program the temperature control to the desired temperature set point 7 Turn ON the gas supply 8 Press the module reset button located on the front of the 48 unit to reset t
54. crew counterclockwise 1 to lower 5 Remove the flexible cap from the barbed fitting on the regulator gas pressure tee located in this line and hook one side of the manometer or side of a magnahelic gauge to this tee Retain this cap for future use Replace the regulator cover screw and make sure it is tight for proper operation 15 Read the value on the manometer magnahelic and compare it to the values in TABLE L MANIFOLD PRESSURE I 4 16 Repeat this adjustment procedure for each gas valve as necessary to adjust to the proper manifold gas pressure PRESSURE INLET REGULATOR 17 ADJUSTMENT UNDER CAP SCREW Remove hoses replace and tighten plugs and caps when complete 18 Replace top front upper jacket access panels and control panel door in reverse order BARBED FITTING CHAMBER PRESSURE GAS VALVE CONTROL MANOMETER KNOB 1 8 HEX 19 If proper ignition and burner operation is not achieved after 1 8 HEX checking gas supply pressure see Cleaning and a Maintenance page 46 for Combustion Air Fan Adjustment Follow the procedure to adjust the Figure 32 Measuring Net Manifold Gas Pressure combustion air fans as necessary 30 Installation and Service Manual TABLE L Net Manifold Pressure 500 000 750 000 Nat Gas LP Gas 1 8 w c 4 6 w c 990 000 2 070 000 1 2 w c 4 6 wie Nat Gas L
55. cts out of the horizontally terminated flue You must purchase a horizontal direct vent kit from the pool heater manufacturer to ensure proper operation See TABLE G this page to determine which horizontal direct vent kit you need 22 The DVK kit includes a DV box adapter air inlet cap and a sidewall vent termination The VDK kit includes DV box adapter and an air inlet cap See note on page 12 concerning DV box adapter Flue Pipe Materials The following manufacturers supply flue materials suitable for these models All materials are made with AL29 4C stainless steel Call the numbers below for the nearest distributor Heat Fab Inc Saf T CI Vent 1 800 772 0739 Protech Systems Inc Fas N Seal Vent 1 800 766 3473 Metal Fab Inc Corr Guard Vent 1 800 835 2830 Combustion Air Inlet Piping The Direct Vent system requires the installation of a pipe to supply combustion air from the outdoors directly to the pool heater The air inlet piping can either be brought in horizontally from a sidewall or vertically from the rooftop Make sure the combustion air inlet is in the same pressure zone as the vent terminal Installation and Service Manual In cold climates use a Type B doublewall vent pipe or an insulated single wall pipe for combustion air This will help prevent moisture in the cool incoming air from condensing and leaking from the inlet pipe AN CAUTION Pool heaters that are shut down or will not oper
56. d flue condition Some discoloration to exterior building or pool heater surfaces can be expected Adjacent brick or masonry surfaces should be protected with a rust resistant sheet metal plate The Outdoor Vent Cap Kit The optional outdoor vent cap kit is available from the pool heater manufacturer The outdoor cap part numbers are listed by input size See TABLE H for kit numbers You can install the outdoor vent cap on either the back or right side of the pool heater see Figures 27 and 28 Complete installation instructions are included with the outdoor vent cap kit The air filter bracket will need to be rotated as shown in Figures 27 and 28 to allow proper access to the filters with the outdoor vent cap in place Figure 27 Outdoor Vent Cap Installed on Right Side of Pool Heater Figure 28 Outdoor Vent Cap Installed on Rear of Pool Heater CONNECTING TO GAS SUPPLY Only supply gas type specified on the pool heater s rating plate This pool heater is orificed for operation up to 2000 feet altitude If installing above 2000 feet elevation consult the pool heater manufacturer INLET PRESSURE Measure inlet pressure at the inlet pressure tap located upstream of the combination gas valve s See TABLE I for maximum and minimum inlet pressures Do not exceed the maximum Minimum inlet pressure is for the purposes of input adjustment Inlet Pressure 10 5 w c 4 5 w c 12 w c 8 W
57. disposal of condensate that may occur in the direct vent system Refer to the condensate drain installation instructions as supplied by the manufacturer of the vent material WARNING Do not combine the flue from this unit with the vent from any other appliance Do not combine flues from multiple appliances into common vent The flue from this unit must be a dedicated stack Connect the flue vent directly to the flue outlet opening on the top of the pool heater Make the connections from the pool heater vent to the outside stack as direct as possible with no reduction in diameter Provide adequate clearance to combustibles for the vent connector and firestop Follow the vent manufacturer s instructions when installing sealed AL29 4C vents and accessories such as firestop spacers vent connectors thimbles caps etc Provide adequate clearance to combustibles for the vent connector and firestop When planning the venting system avoid possible contact with plumbing or electrical wiring inside walls ceilings and floors Locate the pool heater as close as possible to the chimney or gas vent When a vent system is disconnected for any reason the flue must be reassembled and resealed according to the vent manufacturer s instructions The installed length of flue from the pool heater to the outside point of termination must not exceed 50 equivalent feet 15 2m Subtract 5 feet 1 5m of equivalent length for each Comme
58. e temperatures before startup If they do not an adjustment must be made to your final calculation of temperature rise 2 The factory supplied copper bypass mounted on the pool heater is equipped with two valves The valve in the outlet to the pool should be placed in the half closed position for initial start up of a cold pool The valve in the crossover pipe to the pump inlet should be in the full open position on initial startup 3 Turn the pool heater ON and allow time for the water temperature to stabilize Observe the inlet water temperature and the difference between inlet and outlet temperatures This difference between inlet and outlet water temperature is the temperature rise NOTE Check the bypass pump rotation Proper rotation is clockwise as viewed from the end of the pump motor 4 Adjust the valve in the bypass discharge to obtain a minimum of a 135 F water temperature at the inlet of the heat exchanger This prevents the pool heater from condensing Compare the temperature rise observed on the pool heater with the required temperature rise for the Btu hr input of your heater as shown in Table Q Adjust the valve in the crossover pipe on the bypass to set the Commercial Pool Heaters OPERATION Continued desired temperature rise It may be necessary to also make a small adjustment to the valve in the bypass discharge to achieve proper temperature rise If the temperature rise is too high the water velocity i
59. e tiles or blocks Place a 1 2 fireproof millboard over the top of the tile or block base Place a 20 gauge sheet metal cover over the fireproof millboard Center the pool heater on the base Also follow this procedure if electrical conduit runs through the floor beneath the pool heater This base must meet all local fire and safety codes Installation and Service Manual COMBUSTIBLE FLOOR KITS Input Btu hr Kit Number 500 000 CFK3302 650 000 CFK3303 750 000 CFK3304 FREEZE PROTECTION Although this pool heater is CSA design certified for outdoor installations such installations are not recommended in areas where the pool heater will be operated in the winter months and the danger of freezing exists Proper freeze protection must be provided for outdoor installations pool heaters installed in unheated mechanical rooms or where temperatures may drop to the freezing point or lower If freeze protection is not provided for the system a low ambient temperature alarm is recommended for the mechanical room Damage to the pool heater by freezing is non warrantable 1 Pump Operation MOST IMPORTANT This pool heater is designed for continuous operation of the filter system pump when the burners are firing If the system pump does not run continuously an additional pump must be installed to provide constant circulation through the pool heater The constant flow of warm pool water can help prevent freezing 2 Anytime t
60. ely 25 seconds in order to allow the combustion chamber to be purged of all combustion byproducts 50 IDLE Temperature Controller Function After completion of the post purge cycle the pool heater will go into an idle state whereby the temperature controller continuously monitors the water temperature until the water temperature drops to levels that require additional heat Installation and Service Manual SCHEMATIC DIAGRAM 500 000 750 000 BTU HR MODELS AUTOIMANUAL RESET BK 5 8 06 Nd EE 120 VAC 15AMPS NEUTRAL usse 120 GROUND 6 4 VAC BK Ww OPTIONAL ALARM ai o W INPUT 4 j 4 ON OFF 1 WARNING THIS HEATER MAY BE G li nM Mr 4 POWER CONNECTED TO ONE OR MORE BRANCH AUX HI LIMIT RESET 2 ADJ HI LIMIT CIRCUIT BREAKER SNITCH CIRCUITS PREVENT ELECTRICAL SHOCK LLL ON rr BL BK ENSURE ALL BRANCH CIRCUITS ARE DE CHASSIS 7 ENERGIZED BEFORE ATTEMPTING TO SERVICE GROUND OPTIONAL EWCO za 21058 120 BK EQUIPMENT T CHASSIS G W W as 77923 GROUND 75007272505 TEST B di SEE PROBE SWITCH 21 T PR Wc HEIL SOND lias BL BLOT 9 516 R BELL24vOUTPUT
61. equivalent length for each 90 elbow Subtract 2 5 feet 0 7m of equivalent length for each 45 elbow Do not exceed the limits for the combustion air inlet piping lengths Sidewall Air Inlet The sidewall air inlet cap is supplied in the Horizontal DirectAire Vent Kit Order the kit from the appliance manufacturer This sidewall cap supplies combustion air for a single pool heater only See TABLE D page 17 for kit numbers Locate the pool heater as close as possible to the sidewall where you will install the combustion air supply system TABLE C Minimum Recommended Combustion Air Supply to Mechanical Room Combustion Air Source Outside Air 2 Openings 125 in 806 cm 163 in 1052 188 1213 cm 248 in 1 600 315 in 2 032 360 2 323 450 in 2 903cm 518 in 3 342 Boiler Input 500 000 650 000 750 000 990 000 1 260 000 1 440 000 1 800 000 2 070 000 Outside Air 1 Opening Inside Air 2 Openings 500 in 3226 cm 650 in 4194 cm 750 in 4839 cm 990 in 6 388 cm 1260 in 8 130 cm 1440 in 9 291 cm 1800 11 614 cm 2070 in 13 356 cm 167 in 1077 217 in 1400 cm 250 10 1613 cm 330 in 2 129 cm 420 10 2 710 cm 480 3 097 600 3 871 690 1n 4 452 cm Outside air openings shall directly communicate with the outdoors When combustion air is drawn from t
62. er The DV box attaches to the air inlet of the pool heater The pipe for combustion air attaches to the DV box 16 You can terminate the combustion air pipe either horizontally with a sidewall air inlet or vertically with a rooftop air inlet Figure 18 Vertical DirectAire Installation with Sidewall Combustion Air Inlet Figure 19 Air Inlet Cap for Sidewall Termination Installation and Service Manual Figure 20 Vertical DirectAire Installation with Rooftop Combustion Air Inlet Vent Kits WARNING Only use a sidewall air inlet cap supplied by the appliance manufacturer or a rooftop air inlet cap supplied by the vent manufacturer Using any other air inlet cap for single unit installations or using a common air inlet cap for multiple units with insufficient free area and or protections from wind and weather may result in operational problems and the spillage of flue products Spillage of flue products can cause personal injury or death due to carbon monoxide poisoning For single pool heater installations with sidewall air inlet see Figure 18 you must order the sidewall air inlet kit The part number for each SVK kit is listed by input size in TABLE D For single pool heater installations with rooftop air inlet see Figure 20 you must order the rooftop air inlet kit The part number for each VDK 15 listed by input size in TABLE D Purchase the flue pipe rooftop flue termination
63. ety devices such as flow switches and gas pressure switches are closed These safety device terminals are located below the EMS Sequencer Remote Aquastat terminals located within the electrical wiring box Two types of connections offered Continuous terminals provide for connection of safety 49 devices that are desired to be constantly monitored Intermittent terminals are provided for devices that are only monitored during a for heat cycle Connection to either of these terminals requires the removal of a factory installed jumper located on the terminal strip TEMPERATURE CONTROLLER Operator A single stage temperature controller is provided on the pool heater and it serves to maintain one of two user selectable temperature set points In addition to maintaining a set point it can provide for desired differential setting Ultimately the temperature controller delivers 24VAC to the ignition module and pressure switch when it senses heat mode is desired IGNITION MODULE Controlled by Temperature Controller One ignition module 15 provided on the pool heater Upon sensing the 24VAC delivered to it by the temperature controller the ignition module checks for a shorted pressure switch and then provided the air switch isn t shorted supplies 120VAC to its blower output relay and waits for a pressure switch signal BLOWERS Controlled by Ignition Module and Relay Board Two blowers serve to provide combustion air
64. g system avoid possible contact with plumbing or electrical wiring inside walls ceilings and floors Locate the pool heater as close as possible to a chimney or gas vent Avoid long horizontal runs of the vent pipe 90 elbows reductions and restrictions No additional draft diverter or barometric damper 1s required on single unit installations with a dedicated stack and a negative draft maintained between 0 02 to 0 08 inches w c Common Venting Systems You can combine the flue with the vent from any other negative draft Category I appliance Using common venting for multiple negative draft appliances requires you to install a barometric damper with each pool heater This will regulate draft within the proper range You must size the common vent and connectors from multiple pool heaters per the venting tables for Type B doublewall vents in the latest edition of the National Fuel Gas Code ANSI 7223 1 and or CAN CGA B149 Installation Code 12 Common venting systems may be too large when existing pool heater 15 removed At the time of removal of an existing pool heater the following steps shall be followed with each pool heater remaining connected to the common venting system placed in operation while other appliances remaining connected to the common venting system are not in operation Seal any unused opening in the common venting system Visually inspect the venting system for proper size and horizontal pitch Make su
65. hat may be connected to the pool heater Refer to the wiring diagram for actual point to point wiring connections that show power delivery POWER SUPPLY 120VAC 60Hz 1PH power connects to black line and white neutral wires located within an electrical wiring box located on the left side of the pool heater A green chassis grounding wire is also provided for connection to earth ground ON OFF ROCKER SWITCH The black line voltage wire runs directly to a single pole single throw On Off rocker switch located behind the front cover accessible by a knurled knob Turning ON the rocker switch delivers line voltage to the low voltage transformer and ignition module Installation and Service Manual NOTE The On Off switch does not provide for disconnection of power being supplied to any remotely connected devices that may be connected to the pool heater i e pumps louvers power venters etc As such it may be necessary to locate and turn OFF power to these items before attempting to service the pool heater LOW VOLTAGE SUPPLY TRANSFORMER A 120VAC to 24VAC transformer located within the control panel provides 24VAC 60Hz to many of the components located on the pool heater One of its 24VAC outputs blue is connected to a circuit breaker and the other yellow is connected to chassis ground 24VAC CIRCUIT BREAKER A circuit breaker is provided for protection of the low voltage supply transformer from overloads and short circuits
66. he module If ignition system fails to operate properly repair work must be performed by a qualified serviceperson or installer ENERGY SAVING RECOMMENDATIONS Keep the pool covered when not in use This will cut heating cost reduce water evaporation conserve chemicals and reduce load on the filtering system Reduce pool thermostat to 78 F or lower Use an accurate pool thermometer to monitor water temperature Use a time clock to start filter pump no earlier than 6 a m during pool season This is the time when nightly heat loss stabilizes Turn the pool heater OFF and drain during long periods when the pool will not be used winter vacations etc Follow a regular program of preventative maintenance for your pool heater each new swimming season Check heat exchanger controls burners and operation of the pool heater For pools used only on weekends the thermostat may be set lower than 78 F during the week Lower setting to a range that can be easily achieved in one day s operation of the pool heater SEQUENCE OF OPERATION OVERVIEW This sequence of operation can be considered the order of events in sequential order that occur after the pool heater has received a call for heat The process begins with 120VAC power entering the pool heater and ends with the pool heater going into an idle state after completion of a successful call for heat NOTE The following descriptions do not include remotely connected devices t
67. he outside through a duct the net free area of each of the two openings must have twice 2 times the free area required for Outside Air 2 Openings The above requirements are for the boiler only additional gas fired units in the boiler room will require an increase in the net free area to supply adequate combustion air for all units Combustion air requirements are based on the latest edition of the National Fuel Gas Code ANSI 7223 1 in Canada refer to 149 Installation Code Check all local code requirements for combustion air 12 Installation and Service Manual Figure 14 Sidewall Combustion Air Inlet Figure 15 Air Inlet Cap Sidewall Termination To prevent recirculation of flue products from an adjacent vent cap into the combustion air inlet follow all applicable clearance requirements in the latest edition of the National Fuel Gas Code and or 149 Installation Code and instructions in the Installation and Service Manual You must install the combustion air inlet cap at least one foot 0 30m above ground level and above normal snow levels The point of termination for the combustion air inlet cap must be at least 3 feet 0 91m below the point of flue gas termination powered vent cap if it 15 located within 10 feet 3 05m of the flue outlet from the powered vent cap Make sure to properly install the air inlet cap assembly on the air inlet pipe 13 You must install the combustio
68. he temperature measured at the sensor drops below 45 F the temperature control turns on the pump to circulate the water 3 Location Indoor pool heaters must be located in a room having a temperature safely above freezing 32 F 0 C 4 Outdoor Pool Heater Installation Use extreme caution to prevent freezing A snow screen should be installed to prevent snow and ice accumulation around the pool heater or its venting system 5 Shut Down and Draining If for any reason the pool heater is to be shut off the following precautionary measures must be taken Shutoff gas supply 2 Shut off water supply 3 Shut off electrical supply 4 Drain the pool heater completely Remove the threaded drain plugs from the inlet and outlet sides of the front header on the heat exchanger see Figure 3 Blow all water out of the heat exchanger Leave drains open until Spring 5 Drain pump and piping Figure 3 Draining Pool Heater CAUTION Under no circumstances should the mechanical room ever be under a negative pressure Particular care should be taken where attic fans clothes dryers exhaust fans compressors air handling units etc may take away air from the pool heater rave AND VENTILATION Provisions for combustion and ventilation air must be in accordance with Section 5 3 Air for Combustion and Ventilation of the latest edition of the National Fuel Gas Code ANSI Z223 1 Canada the late
69. her non combustible pad Do not locate the pool heater so that high winds can deflect off of adjacent walls buildings or shrubbery causing recirculation Recirculation of flue products may cause operational problems bad combustion or damage to controls Locate unit at least 3 feet 0 91m from any wall or vertical surface to prevent wind conditions from affecting performance Multiple pool heater outdoor installations require 48 1 22m clearance between each vent cap Locate the outdoor cap at least 48 1 22m below and 48 1 22m horizontally from any window door walkway or gravity air intake Locate the pool heater at least 10 feet 3 05m away from any forced air inlet Locate pool heater at least 3 feet 0 91m outside any overhang Clearances around outdoor installations can change with time Do not allow the growth of trees shrubs or other plants to obstruct the proper operation of the outdoor vent system Do not install in locations where rain from building runoff drains will spill onto the pool heater Commercial Pool Heaters INSTALLATION Continued TABLE H Input Btu hr Outdoor Vent Cap Kits Kit without Pump Cover K it with Pump Cover ODK3052 ODK3053 2 070 000 ODK3038 ODK3051 These kits include an outdoor vent cap and gasket 500 000 ODK3748 650 000 ODK3749 Flue gas condensate can freeze on exterior walls or on the vent cap Frozen condensate on the vent cap can result in a blocke
70. hree feet downstream from the point where the heated water from the pool heater is added to the filtration system piping The limit may be mounted in a 3 8 NPT tapped fitting installed in the filtration system piping or it may be installed directly into a tapped opening in the PVC filrer system piping Turn off the filter system pump when installing the auxiliary limit in the filtration system piping A tapped opening can be added to the PVC pipe by first drilling a 9 16 pilot hole in the PVC pipe at least three feet downstream of the point where the heated water from the pool heater is added to the filter piping The drilled pilot hole can now be carefully threaded with a 3 8 NPT taper tap After the 3l pipe threads have been cut into the PVC pipe wall the limit can be inserted into the tapped opening Apply a small amount of a high quality RTV silicone sealant to the threads on the limit to prevent leaks and install the limit into the threaded opening in the pipe Install the limit control and tighten to seal Do not over tighten the brass limit into the threaded opening in the PVC pipe Over tightening the limit can damage the limit and or strip the threads cut into the plastic pipe Wire the limit into the pool heater control circuit as shown in the wiring diagram for your model If additional wire length is needed use 18 GA wire for distances up to 30 ft For longer distances size the wire per Table N Use weatherproof connections
71. icates the function of each of the pool heater s indicating lights and a clear window to view the digital temperature display from the temperature control The thermostat and diagnostic light board are mounted to the back of the control panel door The control panel assembly is mounted on a slide out chassis 40 to allow easy access to the components on the panel The control panel contains the ignition module transformer for the 24 VAC control circuit circuit breaker for the control circuit switching relays for component operation and wiring harness connections to the pool heater s components The control panels are common and may be switched between pool heaters for trouble shooting Removing the Control Panel 1 Pull the control panel out as far as it goes 2 Remove the multi pin connector blocks from the top and right side of the control panel 3 Usea 1 2 box wrench or socket wrench to remove the bolt on the right side of the control panel 4 Remove the entire control panel 5 Reinstall the control panel in the reverse order CAUTION Control panel is heavy and awkward to handle when removed Carefully support the control panel when removing Ignition and Control Timings Proven Pilot Hot Surface Ignition System M 9 on 500 000 through 2 070 000 Btu hr models with One Hot Surface Ignition Module Hot Surface Ignition Module Timings Nominal Prepurge 15 Seconds Hot Surface Igniter Heat up Time 25 35
72. ided as a drain line from the tee The drain tubing must have a trap provided by a 3 7 6cm diameter circular trap loop in the drain tubing Prime the trap loop by pouring a small quantity of water into the drain hose before assembly to the vent Secure the trap loop in position with nylon wire ties Use caution not to collapse or restrict the condensate drain line with the nylon wire ties The condensate drain must be routed to a suitable drain for disposal of condensate that may occur in the direct vent system Refer to the condensate drain installation instructions as supplied by the manufacturer of the vent material Installation and Service Manual Figure 22A Direct Vent Illustration with Sidewall Vent and Sidewall Combustion Air Figure 22B Sidewall Venting Z WARNING Do not combine the flue from this unit with the vent from any other appliance Do not combine flues from multiple appliances into a common vent The flue from this unit must be a dedicated stack Connect the flue vent directly to the flue outlet opening on the top of the pool heater Make the connections from the pool heater vent to the outside stack as direct as possible with no reduction in diameter Provide adequate clearance to combustibles for the vent connector and firestop Follow the vent manufacturer s instructions when installing
73. ine to the pool heater s gas inlet see Figure 29 7 Apply a moderate amount of good quality pipe compound do not use Teflon tape to pipe only leaving two end threads bare 8 Remove the seal over the gas inlet to the pool heater 9 Connect the gas pipe to the inlet of the pool heater Use a wrench to support the gas manifold on the pool heater 10 For L P gas consult your L P gas supplier for expert installation 11 Ensure that all air is completely bled from the gas line before starting the ignition sequence Start up without properly bleeding air from the gas line may require multiple reset functions of the ignition control module to achieve proper ignition WARNING Do not have any open flame in proximity to the gas line when bleeding air from the gas line Gas may be present Gas Train and Controls NOTE The gas train and controls assembly provided on this pool heater have been tested under the applicable American National Standard to meet minimum safety and performance criteria such as safe lighting combustion and safety shutdown operation Commercial Pool Heaters INSTALLATION Continued Figure 30 shows a typical pool heater gas train COMBINATION VALVE TO BURNERS ADDITIONAL VALVES BASED ON UNIT INPUTS Figure 30 Typical Pool Heater Gas Train Drawing TABLE J Suggested Gas Pipe Size for Single Unit Installations Btu hr Distance From Me
74. ion Normal Flame A normal flame is blue with slight yellow tips has a well defined inner cone and displays no lifting flames Yellow Tips The usual causes for yellow tips on the burner flame are burner air flow blockage or partial obstruction Yellow Flames The usual causes for yellow flames are primary air flow blockage to the burner s or excessive gas input Correct this condition immediately Lifting Flames The usual causes for lifting flames are over firing the burner s excessive primary air or high draft If you observe improper flame patterns examine the venting system ensure proper gas supply and ensure adequate supply of combustion and ventilation air Flue Gas Passageways Cleaning Procedures Any sign of soot around the refractory at the burners or in the areas between the fins on the copper heat exchanger indicates a need for cleaning The following cleaning procedures must only be performed by a qualified serviceman or installer Proper service is required to maintain safe operation Properly installed and adjusted pool heaters seldom need flue cleaning IMPORTANT All gaskets on disassembled components must be replaced with new gaskets on reassembly Gasket kits are available from your distributor Burner Removal and Cleaning 1 Turn OFF the main power to the pool heater 2 Turn the main manual gas shutoff to the pool heater 3 Remove the front outer jacket panels 4 Disconnec
75. ion from Peaked Roof More Than 10 From Ridge Installation and Service Manual 10 OR LESS CHIMNEY WALL OR CHIMNEY PARAPET Figure 12 Vent Termination from Flat Roof 10 or Less from Parapet Wall 10 OR LESS NOTE NO HEIGHT ABOVE PARAPET 4 REQUIRED WHEN DISTANCE FROM WALLS OR PARAPET IS MORE THAN 10 WALLS OR CHIMNEY PARAPET Figure 13 Vent Termination from Flat Roof More Than 10 from Parapet Wall Sidewall Vent Termination Clearances and Location Locate the bottom of the vent terminal at least 12 inches 30cm above grade and above normal snow levels Locate the bottom of the vent terminal at least 7 feet 2 13m above grade when located adjacent to public walkways Do not terminate directly above a public walkway Do not terminate the venting system in a window well stairwell alcove courtyard or other recessed area Do not terminate the venting system below grade Locate vent termination at least 3 feet 0 91m from an inside corner of an L shaped structure 11 Provide a minimum clearance of 4 feet 1 2m horizontally from electric meters gas meters regulators and relief equipment Never locate the vent cap above or below electric meters gas meters regulators and relief equipment unless a 4 foot 1 2m horizontal clearance is maintained Terminate the venting system at least 3 feet 0 9m above any forced air inlet within 10 feet 3 05m Terminate the venting sy
76. it control has a maximum limit setting of 230 F 110 C If water temperature exceeds the set point the limits will break the control circuit and shut down the pool heater The auto reset limit control will only be reset after the water temperature has cooled below the set point of the limit The manual reset limit control will require an operator to push the reset button located immediately below the high limit dial if this limit has tripped CLEANING AND MAINTENANCE Listed below are items that must be checked to ensure safe reliable operations Verify proper operation after servicing AN CAUTION Label all wires prior to disconnection when servicing controls Wiring errors can cause improper and dangerous operation Appliance Area Keep appliance area clear and free from combustible materials gasoline and other flammable vapors and liquids Water Circulating Pump Inspect the pump every six months and oil as necessary Use SAE 30 non detergent oil or lubricant specified by the pump manufacturer Burner Flames Visually check the main burner flames at each start up after long shutdown periods or at least every six months Burner view ports are located on the right and left sides of the pool heater Installation and Service Manual N WARNING The areas around the burner view ports are hot Direct contact with the pool heater could result in burns Yellow Flames Lifting Flames Figure 49 Flame Pattern Illustrat
77. l duct tape meeting UL Standard 723 or 181 A P or a high quality UL Listed silicon sealant such as those manufactured by Dow Corning or General Electric 2 On horizontal runs do not install vent pipe with seams pointing down Position vent pipe so that the seams are on the top side of the vent pipe 3 Secure all joints with a minimum of three sheet metal screws or pop rivets Apply aluminum foil duct tape or silicone sealant to all screws or rivets installed in the vent pipe 4 Ensure that the air inlet pipes are properly supported WARNING Properly seal all joints and seams in the inlet vent piping system Failure to do so may result in flue gas recirculation spillage of flue products and carbon monoxide emissions Carbon monoxide poisoning can cause severe personal injury or death Combined Combustion Air Inlet Points You can combine the air inlet pipes from multiple pool heaters to a single common connection if the common air inlet pipe has a cross sectional area equal to or larger than the total area of all air inlet pipes connected to the common air inlet pipe Example Two 8 20 3cm air inlet pipes 50 3 324 5 area each have a total area of 100 6 in 645 2 requiring a 12 30 5cm 113 1 in 729 7 common air inlet pipe The air inlet point for multiple pool heater air inlets must be provided with an exterior opening which has a free area equal to or greater than the total are
78. l problems and the spillage of flue products Spillage of flue products can cause personal injury or death due to carbon monoxide poisoning The sidewall or vertical rooftop DirectAire combustion air supply system has specific vent material and installation requirements The air inlet pipe connects directly to the pool heater to supply combustion air In most installations the combustion air inlet pipe will be a dedicated system with one air inlet pipe per pool heater You can combine multiple air inlets if the guidelines in Combined Air Inlet Points page 13 are followed The air inlet pipe will be connected to a combustion air inlet cap as specified in this section For normal installations this system uses a single wall pipe to supply combustion air from outdoors directly to the pool heater In cold climates use a Type B doublewall vent pipe or an insulated single wall pipe for combustion air This will help prevent moisture in the cool incoming air from condensing and leaking from the inlet pipe NOTE When the use of the DV box adapter in the following venting systems is not practical contact the manufacturer for an in line filter to address problems Length of Air Inlet Pipe The installed length of air inlet pipe from the pool heater to the outside air inlet cap must not exceed 50 equivalent feet 15 2m Upsizing air inlet pipe diameters is permitted to meet increased length requirements Subtract 5 feet 1 5m of
79. lating pump mounted in the factory supplied pool loop 500 000 750 000 Btu hr Models 1 4 HP 120 VAC 5 8 Amp 990 000 2 070 000 Btu hr Models 1 2 HP 120 VAC 7 4 Amp This pump is sized based on installation of a single pool heater in close proximity with the system If the number of fittings and straight pipe exceeds the quantities shown in this section a larger pump will be required As an alternative to changing the pump in these circumstances the piping can be changed to a sub loop Commercial Pool Heaters OPERATION Continued The standard pump selection is based on the following pipe and fittings from the pool heater to the system 2 ball valves 1 cold water tee 6 90 elbows 2 unions Not more than 45 feet of straight pipe IMPORTANT For every elbow and tee in excess of those shown above deduct 5 feet from the maximum allowable straight pipe in the pool heater to the system circulating loop Minimum Pump Performance Pump performance is based on providing adequate flow and temperature rise to prevent scale accumulation in the heat exchanger See Water Chemistry and Bypass Adjustment on page 42 TABLE T Minimum Pump Performance Ft Hd 55 10 90 15 Btu hr Input 500 000 750 000 990 000 2 070 000 Heat Exchanger This 15 a highly sophisticated heat exchanger designed to carry water in such a way that it generates a scouring action which keeps all interior surfaces free f
80. lean anything against it store trash or debris near it stand on it or in any way block the flow of fresh air to your pool heater 3 UNDER NO CIRCUMSTANCES must flammable materials such as gasoline or paint thinner be used or stored in the vicinity of this pool heater vent air intake system or any location from which fumes could reach the pool heater or vent air intake system 4 This pool heater is only for use with the type of gas indicated on the rating plate 5 If you smell gas shut off gas supply Commercial Pool Heaters do not try to light any appliance do not touch any electrical switch do not use any phone in your building immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions if you cannot reach your gas supplier call the fire department This appliance is a high efficiency pool heater which has been designed to operate scale free and trouble free for many years Particular attention should be directed to the following items Correct adjustment of the pool heater s pumped bypass and valves Required minimum inlet temperature to the pool heater Correct piping to the pool filter system with specified pipe materials and size Electrical interconnection of the pool heater controls bypass pump and filter pump to ensure continuous circulation Proper venting Water chemistry Follow all clearances from combustibles contained in this manual Appliance surfaces
81. ll the fire department Use only your hand to turn the gas control lever Never use tools If the lever will not turn by hand don t try to repair it call a qualified service technician Force or attempted repair may result in a fire or explosion Do not use this pool heater if any part has been under water Immediately call a qualified service technician to replace the pool heater The possible damage to a flooded pool heater can be extensive and present numerous safety hazards Any appliance that has been under water must be replaced Commercial Pool Heaters S TA L L AT ont nue d 10 Turn the manual gas cock counterclockwise to the ON position Lighting Instructions 11 Turn the power switch to the position 1 STOP Read the safety information 12 Slide the control panel assembly back into the pool heater 2 Program the temperature control to the desired settings Tighten the knurled screw at the bottom of the control see Operating Temperature Control page 37 panel cover 3 Loosen knurled screw at the bottom of control panel cover 13 If the pool heater will not operate follow the instructions see Figure 39 Turn Off Gas To Appliance and call your service 4 Grasp the bottom of the control panel cover and pull out technician or gas supplier 5 Locate the ON OFF switch inside control area Switch 18 To Turn Off Gas To Pool Heater located to the left of the pull out control circui
82. masonry chimney it must be relined with a properly sized and approved chimney liner system An unlined masonry chimney must not be used to vent flue products from this high efficiency pool heater An unlined chimney must be relined with an approved chimney liner system when a new pool heater is being attached to it Metallic liner systems Type B doublewall or flexible or rigid metallic liners recommended Consult with local code officials to determine code requirements or the advisability of using or relining a masonry chimney Vertical Vent Termination Clearances and Location Follow all vertical venting termination information for clearances and location under Vertical Vent Termination Clearances and Location page 10 2 Vertical DirectAire Venting IMPORTANT Before installing a venting system follow all venting clearances and requirements found in the Venting General Information section page 10 The Vertical DirectAire vent system is the same as the Conventional Negative Draft vent system except it pulls combustion air from the outdoors through a sidewall or vertical air inlet Follow all requirements in Conventional Negative Draft Venting page 14 The Vertical DirectAire vent system requires you to install two vent pipes directly to the pool heater one vertical pipe with a rooftop termination for the flue products and one pipe for combustion air For this venting option you must purchase the DV box adapt
83. mined using the appropriate tables of the latest edition of the National Fuel Gas Code ANSI Z223 1 in Canada the latest edition of CAN CGA B149 Installation Code for Gas Burning Appliances and Equipment ON Masonry Chimney Installations A masonry chimney must be properly sized for the installation of a high efficiency gas fired pool heater Venting of a high efficiency pool heater into a cold or oversized masonry chimney can result in operational and safety problems Exterior masonry chimneys with one or more sides exposed to cold outdoor temperatures are more likely to have venting Commercial Pool Heaters INSTALLATION Continued problems The temperature of the flue products from a high efficiency pool heater may not be able to sufficiently heat the masonry structure of the chimney to generate proper draft This will result in condensing of flue products damage to the masonry flue tile insufficient draft and possible spillage of flue products into an occupied living space Carefully inspect all chimney systems before installation Inspection of a Masonry Chimney A masonry chimney must be carefully inspected to determine its suitability for venting of flue products A clay tile lined chimney must be structurally sound straight and free of misaligned tile gaps between liner sections missing sections of liner or any signs of condensate drainage at the breeching or clean out If there is any doubt about the condition of a
84. must be provided with an exterior opening which has a free area equal to or greater than the total area of all air inlet pipes connected Commercial Pool Heaters INSTALLATION Continued to the common air inlet This exterior opening for combustion air must connect directly to the outdoors The total length of the combined air inlet pipe must not exceed a maximum of 50 15 2m equivalent feet Subtract 5 feet 1 5m for each 902 elbow in the air inlet pipe You must deduct the restriction in the area provided by any screens grills or louvers installed in the common air inlet point These are common on the sidewall air inlet openings Screens grills or louvers installed in the common air inlet can reduce the free area of the opening from 25 to 75 based on the materials used Vent System Options This pool heater has six venting options 1 Conventional Negative Draft Venting This option uses a vertical rooftop flue termination Combustion air is supplied from the mechanical room 2 Vertical DirectAire Venting This option uses a vertical conventional vent for flue products Combustion air is supplied by a pipe from the sidewall or rooftop See page 16 for venting details 3 Sidewall Venting This option uses a powered vent assembly to exhaust the flue products out a sidewall vent termination Combustion air is supplied from the mechanical room See page 17 for venting details 4 Horizontal DirectAire Venting This option
85. n 11 12 I3 Electrical This pool heater uses a transformer to supply a low voltage control circuit The voltage on the secondary side should be 24 to 28VAC when measured with a voltmeter This unit has a 7 AMP circuit breaker provided on the secondary side of the transformer tripped circuit breaker indicates a short in the 24VAC controls that must be corrected Combustion and Ventilation Air Combustion Air Filter This unit has a standard air filter located at the combustion air inlet This filter helps ensure clean air is used for the combustion process Check this filter every month and replace when it becomes dirty The filter size on the 500 000 750 000 Btu hr models is 12 x 12 x 1 30 5cm x 30 5cm x 2 5 and 16 x 16 x 1 40 6cm x 40 6cm x 2 5 the 990 000 2 070 000 Btu hr models You can find these commercially available filters at any home center or HVAC supply store Venting System Examine the venting system at least once a year Check more often in the first year to determine inspection interval Check all joints and pipe connections for tightness corrosion or deterioration Clean screens in the venting air intake system as required Have the entire system including the venting system periodically inspected by a qualified service agency Air Flow Check frequently to be sure the flow of combustion and ventilation air to the pool heater is not obstructed Combustion Air Fans Both the 50
86. n air inlet cap and the powered vent cap on the same wall and in the same pressure zone Do not install the combustion air inlet cap closer than 10 feet 3 05m from an inside corner of an L shaped structure Vertical Rooftop Air Inlet Use the vertical air inlet terminations available from the pool heater manufacturer recommended and or supplied by the vent manufacturer or use two 90 elbows as described on page 24 as ENT 12 Figure 16 Roof Top Combustion Air Inlet Clearances You must locate the air inlet termination elbow at least 12 30cm above the roof or above normal snow levels If the air inlet cap is within a 10 foot 3 05m radius of the flue outlet the point of termination for the combustion air inlet cap must be at least 3 feet 0 91m below the point of flue gas termination vent cap Do not install the combustion air inlet cap closer than 10 feet 3 05m from an inside corner of an L shaped structure Combined Air Inlet Points The air inlet pipes from multiple pool heaters can be combined to a single common connection if the common air inlet pipe has a cross sectional area equal to or larger than the total area of all air inlet pipes connected to the common air inlet pipe Example Two 10 air inlet pipes 78 5 area each have a total area of 157 in and will require a 15 176 7 in area common air inlet pipe The air inlet point for multiple pool heater air inlets
87. nation Clearances and Location Follow all sidewall venting termination information for clearances and location under Sidewall Vent Termination Clearances and Location page 11 TABLE G Direct Vent Kits Vertical Input Horizontal WARNING Do not vent this pool heater into a masonry chimney without a sealed stainless steel liner system Any breaks leaks or damage to the masonry flue tile will allow the positive pressure flue products to leak from the chimney and into occupied living spaces This could cause serious injury or death due to carbon monoxide poisoning and other harmful flue products IMPORTANT Check with local code officials to Btu hr 500 000 650 000 750 000 990 000 1 260 000 1 440 000 1 800 000 2 070 000 DVK3004 DVK3005 DVK3005 DVK3000 DVK3001 DVK3001 DVK3002 DVK3002 Kit VDK3026 VDK3027 VDK3027 VDK3023 VDK3024 VDK3024 VDK3024 VDK3024 determine code requirements or the advisability of using a masonry chimney with a sealed corrosion resistant liner system Vertical DV Venting Termination You must use the vent termination recommended by the vent manufacturer for vertical direct vent terminations Follow all vertical venting termination information for clearances and location under Vertical Vent Termination Clearances and Location page 10 Horizontal DV Venting Termination Horizontal venting uses the pool heater s internal combustion air blowers to force the flue produ
88. negative draft within the specified range of 0 02 to 0 08 inches w c If the draft in a dedicated stack for a single pool heater installation exceeds the maximum specified draft you must install a barometric damper to control draft Multiple pool heater installations with combined venting or common venting with other Category I negative draft appliances require each pool heater to have a barometric damper installed to regulate draft within the proper range Do Not connect vent connectors serving appliances vented by natural draft negative draft to any portion of a mechanical draft system operating under positive pressure Connecting to a positive pressure stack may cause flue products to be discharged into the living space causing serious health injury Flue Outlet Piping With this venting option you must use Type B doublewall or equivalent vent materials Vent materials must be listed by a nationally recognized test agency for use as vent materials Make the connections from the pool heater vent to the outside stack as direct as possible with no reduction in diameter Use the National Fuel Gas Code venting tables for doublewall vent to properly size all vent connectors and stacks Follow the vent manufacturer s instructions when installing Type B vents and accessories such as firestop spacers vent connectors thimbles caps etc Provide adequate clearance to combustibles for the vent connector and firestop When planning the ventin
89. nting system for flue products is required on all models of this pool heater This venting system operates with a positive pressure in the vent The internal combustion air blowers generate this positive pressure which operates the combustion process and also exhausts the flue products from the building This vent system has specific vent material and installation requirements Only use listed sealed AL29 4C vent system 21 materials Follow all installation requirements See TABLE B page 11 for proper pipe size for your pool heater A list of sealed AL29 4C flue pipe manufacturers is located on page 22 Seal all vent joints and seams gas tight Drain Tee Installation A drain tee must be installed in the vent pipe to collect and dispose of any condensate that may occur in the vent system The drain tee must be installed as the first fitting after the horizontal ell on the top of the unit see Figure 22A Plastic drain tubing sized per the vent manufacturer s instructions shall be provided as a drain line from the tee The drain tubing must have a trap provided by a 3 7 6cm diameter circular trap loop in the drain tubing Prime the trap loop by pouring a small quantity of water into the drain hose before assembly to the vent Secure the trap loop in position with nylon wire ties Use caution not to collapse or restrict the condensate drain line with the nylon wire ties The condensate drain must be routed to a suitable drain for
90. ollowed initial startup of the pool heater and after the pool has reached desired operating temperature The minimum inlet temperature and temperature rise should then be periodically rechecked in routine maintenance Inlet water temperature to the heat exchanger must be 135 F or higher to prevent the formation of condensate in the combustion chamber and venting system Condensate formation causes non warrantable operational problems and a hazard from flue gas spillage if allowed to persist for extended periods of operation The correct temperature rise across the heat exchanger ensures proper velocity in the tubes to help control scale formation in the heat exchanger tubes This will yield long life and economical operation from your pool heater Excessive lime scale build up in the tubes is caused by low water velocity through the pool heater Excessive pitting or erosion in the tubes is caused by high water velocity through the tubes Check the discharge piping from the pool heater to the filter system This piping must be either copper pipe or high temperature CPVC plastic Follow the steps below to adjust the bypass on the pool heater 1 The pool heater is equipped with two immersion thermometers placed in wells on the inlet and outlet of the heat exchanger s front header These will be used to read water temperature for bypass adjustment With the pump running and the pool heater off both of the thermometers should read the sam
91. ool heater Vertical DirectAire and Horizontal DirectAire venting systems have specific requirements for combustion air ducts from the outside which are directly connected to the pool Commercial Pool Heaters INSTALLATION Continued heater See the requirements for combustion air duct in the venting section starting on page 12 VENTING General Information You must supply adequate combustion and ventilation air to this pool heater You must provide minimum clearances for the vent terminal from adjacent buildings windows that open and building openings Follow all requirements set forth in the latest edition of the National Fuel Gas Code ANSI Z223 1 in Canada the latest edition of CAN CGA Standard B149 Installation Code for Gas Burning Appliances and Equipment or applicable local building codes Vent installations for connection to gas vents or chimneys must be in accordance with Part 7 Venting of Equipment of the above mentioned standards IMPORTANT Examine the venting system at least once each year Check all joints and vent pipe connections for tightness Also check for corrosion or deterioration If you find any problems correct them at once Venting Support Support horizontal portions of the venting system to prevent sagging Provide an upward slope of at least 1 4 inch per foot 21mm m on all horizontal runs from the pool heater to the vertical flue run or to the vent terminal on sidewall venting install
92. orizontal DirectAire Installation Illustration with Sidewall Venter and Sidewall Combustion Air Combustion air supplied from outdoors must be free of contaminants see Combustion and Ventilation Air page 7 Vent Kits You must order the Horizontal DirectAire Vent Kit for sidewall installation See TABLE F for kit numbers Each kit includes a sidewall powered vent cap proving switch controls combustion air inlet cap to supply air to a single pool heater the transition adapter to attach the field supplied single wall air inlet pipe to the pool heater and installation instructions Purchase flue pipe and air inlet pipe locally The sidewall air inlet cap supplied in the Horizontal DirectAire Vent Kit is used to supply combustion air to a single pool heater Combustion air supply pipes from multiple pool heaters can not be combined into a single air inlet pipe and inlet point WARNING Only use the sidewall air inlet cap recommended appliance manufacturer Using another sidewall air inlet cap may result in operational problems and the spillage of flue products Spillage of flue products can cause personal injury or death due to carbon monoxide poisoning Venting of Flue Products For venting flue products horizontally follow all requirements in the installation instructions for sidewall venting Termination point for the flue products must follow the clearance requirements in Sidewall Venting Termination
93. osition is selected this will disable the call for heat operation of the pool heater When in the view mode for normal operation the display shows the current inlet water temperature Up and Down Arrow Keys Allows the displayed parameter to be increased or decreased After pressing the Select key a control value can be changed by using the arrow keys Control values will be increased or decreased by 1 F for each time the arrow keys are depressed The temperature set point for the pool temperature settings may be adjusted at any time by 38 pushing the Up or Down arrow keys Ten seconds after any activity to adjust a set point has stopped the display will revert to showing the current inlet water temperature Control values and operation selection will remain in the device memory even after power is removed Programming Mode Select Up and Down Arrow Keys simultaneously pressed for three seconds Changes the operation mode of the control from temperature selection to a programming mode In the programming mode the differential for the pool settings may be adjusted and the temperature display may be selected to show either F or C The cursor will flash over Pool 1 or Pool 2 when those set points are being changed or over the area between Pool 1 and Pool 2 when the differentials are being adjusted as outlined under Operating Temperature Control on page 37 When the differential and temperature display are selected and there ha
94. rcial Pool Heaters INSTALLATION Continued 90 elbow Subtract 2 5 feet 0 7m of equivalent length for each 45 elbow Masonry Chimney Installation Do not use a standard masonry chimney to directly vent the combustion products from this pool heater To use a masonry chimney the chimney must use a sealed corrosion resistant liner system Sealed corrosion resistant liner systems singlewall doublewall flexible or rigid must be rated for use with a high efficiency positive pressure vent system Corrosion resistant chimney liner systems are typically made from a high grade stainless steel such as AL29 4C The liner must be properly sized and fully sealed throughout the entire length Both the top and bottom of the masonry chimney must be capped and sealed to provide a dead air space around the liner When installing the vent cap the wall opening must provide an air space clearance of 2 inches 5 1cm around the flue pipe The diameter of the opening for installation of the sidewall cap will be 4 inches 10 2cm larger minimum than the nominal diameter of the installed vent pipe to the horizontal vent cap Install the horizontal vent cap from the outside Mount the vent cap to the wall using four screws or wall anchors Seal under the screw heads with caulking Install the sealed 1 29 4 vent pipe from the pool heater to the vent cap See detailed instructions packed with the horizontal direct vent kit Horizontal Vent Termi
95. rcuit to prove water flow before main burner ignition The factory option flow switch is installed in the outlet side of the piping loop when shipped from the factory These pool heaters require a minimum flow of 26 GPM to make the flow switch and start burner operation Ensure that the pump installed on the pool heater will supply adequate flow to make the flow switch contacts and operate the pool heater water flow switch meets most code requirements for a low water cut off device on appliances requiring forced circulation for operation Pump Purge Delay Option An electronic pump purge option is available for this pool 33 heater During extended periods of inactivity during which pumping may have been turned off to conserve energy air can become entrapped in the piping The pump purge option delays pool heater operation until the pump has been on for sufficient time to remove air from piping Both the inactivity time and pump purging time are adjustable The inactive timer is adjustable from 1 99 hours Selection of a time between 4 8 hours is recommended The purge timer is adjustable from 1 60 minutes Selection of a time between 10 to 30 minutes is recommended When provided the pump purge circuitry also controls the pump post purge time Pump post purge allows the pump to run for a brief period of time after a call for heat in order to remove any residual heat from the heat exchanger The post purge timing is adjust
96. re there is no blockage or restriction leakage corrosion and other unsafe conditions If possible close all building doors and windows Close all doors between the space in which the appliances remaining connected to the common venting system are located and other building spaces Turn on clothes dryers and any other appliances not connected to the common venting system Turn on any exhaust fans such as range hoods and bathroom exhausts so they will operate at maximum speed Do not operate a summer exhaust fan Close fireplace dampers Place in operation the unit being inspected Follow the lighting instructions Adjust thermostat so pool heater will operate continuously Test for spillage of flue gases at the draft hood relief openings of all appliances connected to the venting system after five minutes of main burner operation After making sure that each appliance remaining connected to the common venting system properly vents when tested as above return doors windows exhaust fans fireplace dampers and other gas burning appliances to their previous conditions of use Correct any improper operation of the common venting system so that the installation conforms to the latest edition of the National Fuel Gas Code ANSI Z223 1 Canada the latest edition of CAN CGA B149 Installation Code for Gas Burning Appliances and Equipment When resizing any portion of the common venting system resize to approach the minimum size as deter
97. rom build up of impurities The straight line two pass design of the tubes sends water into the headers at a properly rated velocity The configuration of the headers in turn creates a high degree of turbulence which is sufficient to keep all contaminants in suspension This scouring action provides greater cost savings for owners Tubes are always able to transfer heat at peak efficiency Every surface within this water containing section is of a non ferrous material providing clear clean rust free water Straight copper tubes finned on the outside for maximum heat transfer coated cast iron one piece cored headers make up an entirely rust proof pool heater On all models header inspection plugs can be removed for field inspection and cleaning of copper tubes The entire heat exchanger may be easily removed from the pool heater 44 WARNING Should overheating occur or the gas supply fail to shut off do not turn off or disconnect the electrical supply to the pump Instead shut off the gas supply at a location external to the pool heater High Water Temperature Limit Control This pool heater is equipped with a fixed setting auto reset high water temperature limit control that is screwed into the outlet head in the heat exchanger This temperature limit control has a maximum limit setting of 200 F 93 C It is also equipped with an adjustable setting manual reset high water temperature limit control This temperature lim
98. rs are not required to have vent or relief lines piped to the outdoors Checking Gas Supply Pressure Use the following procedure to check gas supply pressure 10 11 12 Turn the main power switch to the OFF position Turn gas valve knobs to the OFF position Shut off gas supply at the field installed manual gas cock in the gas piping to the pool heater If fuel supply is L P gas shut off gas supply at the tank Remove the 1 8 hex plug located on the inlet side of any gas valve You may also use a tapping on the field installed main manual gas cock or gas piping Install a fitting in the inlet pressure tapping suitable to connect to a manometer or magnahelic gauge Range of scale should be 14 w c or greater to check inlet pressure Turn on gas supply at the manual gas cock turn on L P gas at the tank if required Turn the power switch to the position Turn the gas valve knobs to the ON position Set the temperature control to call for heat See Operating Temperature Control on page 37 for programming instructions Observe the gas supply pressure as all burners are firing Ensure that inlet pressure is within the specified range See Connecting To Gas Supply page 26 for minimum and maximum gas supply pressures If gas pressure 15 out of range contact gas utility gas supplier qualified installer or service agency to determine necessary steps to provide proper gas pressure to the pool
99. s too low Readjust the valves in the bypass Check the following a Check for restrictions in the outlet of the pool heater b Ensure that any additional valves between the pool heater and the filter system are open c Check the pump to be sure it is running properly and that the pump motor is running in the proper direction d Ensure that the installed piping between the pool heater and filter system is not less than 2 1 2 in diameter Common manifold piping for multiple pool heater installations will require larger minimum pipe sizes to ensure proper flow See Table S Set the adjustable high limit control to 200 F If the temperature rise is too low the water velocity is too high Adjust the valves in the bypass as follows a Slowly throttle the valve in the crossover pipe of the pool heater until the temperature rise is steady at the required temperature rise as noted in Table Q b Additional adjustment of the valve in the discharge of the bypass may be required c Sustained high water velocity and low temperature rise may result in pitting or erosion of the copper tubes in the heat exchanger This is a non warrantable failure Temperature rise must be properly adjusted to achieve the specified flow rate Once the pool has reached the desired operating temperature it may be necessary to reset the valves in the bypass This is required because the temperature of the pool water coming to the pool heater will be substantially
100. s and requirements in the Venting General Information found section page 10 The Horizontal DirectAire vent system is the same as the Sidewall Venting system except it pulls combustion air from the outdoors through a sidewall air inlet Follow all requirements in Sidewall Venting page 17 The Horizontal DirectAire vent system requires you to install two vent pipes directly to the pool heater one pipe for flue products and one for combustion air Install both vent pipes horizontally with a sidewall termination point For this venting option you must purchase the DV box accessory from the pool heater manufacturer The DV box attaches to the air inlet of the pool heater The pipe for combustion air attaches to the DV box Make vent connection directly to the top of the pool heater No additional draft diverter or barometric damper is required on single unit installations with a dedicated stack and a negative draft maintained between 0 04 to 0 08 inches w c The Horizontal DirectAire combustion air supply system has specific vent material and installation requirements The air inlet pipe connects directly to the pool heater to supply combustion air The combustion air inlet pipe is a dedicated system with one air inlet pipe per pool heater You must 20 connect the air inlet pipe to a combustion air inlet cap as specified in this section Figure 23 H
101. s been a period of 10 seconds with no activity to adjust control settings the display will revert back to normal display of water temperature IMPORTANT When power is initially applied to a new pool heater the control points will be pre programmed The factory final quality test sets the pool heater for test firing The preset values are as follows Set points 80 F Differential 4 F NOTE The control values programmed into memory will not be lost because of a power failure Error Messages Displayed by the Temperature Controller There are three error messages that can be displayed in response to software or hardware problems with the pool heater s internal temperature control The error codes that may be seen on the display are Err The internal EEPROM of the microprocessor in the temperature control has a read error at power up This error cannot be field repaired Replace the pool heater s temperature control if the error persists SHr There is a short in the temperature sensor Make sure sensors are properly installed wired and connected to the control Correct sensor installation or replace sensor OPn There is a break in the wiring to the temperature sensor Make sure sensors are properly installed wired and connected to the control Correct sensor installation or replace sensor Installation and Service Manual HOI SURFACE IGNITION SYSTEM Hot Surface Igniter and Ignition Control Module This uni
102. s out of the stack This fan generates a negative draft at the pool heater Combustion air is drawn from the mechanical room see Combustion and Ventilation Air page 7 Figure 21 Sidewall Venting Installation with an Induced Draft Fan and Sidewall Vent Cap Commercial Pool Heaters INSTALLATION Continued Sidewall Fan The sidewall fan can be mounted on the inside outside depending upon model with a sidewall vent hood installed on the exterior wall The sidewall fan and accessories are included in a venting kit provided by the appliance manufacturer See TABLE E for kit numbers The venting kit includes the sidewall fan vent hood tapered vent adapter barometric damper proving switch and all necessary relays to interlock with the heaters control system The tapered vent adapter reduces the vent size at the inlet to the fan There should be no reduction in vent diameter from the pool heater s flue outlet to the sidewall fan The barometric damper must be installed on the flue and adjusted to supply a negative draft within the range of 0 04 to 0 08 inches w c while the pool heater is operating Flue Outlet Piping With this venting option you must use Type B doublewall or equivalent vent materials Vent materials must be listed by a nationally recognized test agency for use as vent materials Make the connections from the pool heater vent to the sidewall fan cap as direct as possible with no reduction in diameter
103. st edition of CAN CGA B149 Installation Code for Gas Burning Appliances and Equipment or applicable provisions of the local building codes Provide properly sized openings to the equipment room to assure adequate combustion air and proper ventilation when the pool heater is installed with conventional venting or sidewall venting Combustion Air Filter This pool heater has a standard air filter located at the combustion air inlet This filter helps ensure clean air is used for the combustion process Check this filter every month and replace when it becomes dirty The filter size on the 500 000 750 000 units is 12 x 12 x 1 30 5cm x 30 5cm x 2 5 and 16 x 16 x 1 40 6cm x 40 6cm x 2 5 em on the 990 000 2 070 000 units You can find these commercially available filters at any home center or HVAC supply store Use filters rated for a maximum face velocity of 300 ft min at a maximum pressure drop of 0 5 w c Pleated filters may be used provided they meet the specifications Commercial Pool Heaters INSTALLATION Continued Combustion Air Options AN CAUTION Some pleated filters are too CAUTION Equipment rooms under a negative pressure may cause operational problems Take particular care where exhaust fans attic restrictive and could cause air flow problems For convenience and flexibility you can direct the combustion air inlet from either the back or right side of the pool heater To arrange the combustion
104. stall the combustion air inlet cap closer than 10 feet 3 05m from an inside corner of an L shaped structure Horizontal Combustion Air Inlet Clearances You must locate the horizontal air inlet termination point at least 12 30cm above grade and above normal snow levels If the air inlet cap is within a 10 foot 3 05m radius of the flue outlet the point of termination for the combustion air inlet cap must be at least 3 feet 0 91m horizontally and 12 inches 30cm below the point of flue gas termination vent cap Do not install the horizontal combustion air inlet cap above the flue outlet Do not install the combustion air inlet cap closer than 10 feet 3 05m from an inside corner of an L shaped structure Multiple Sidewall Direct Vent Installations The combustion air inlet caps for multiple pool heater installations must maintain the same minimum clearance from the closest flue vent cap as specified in single pool heater installations You may install multiple flue outlet caps side by side and multiple combustion air inlet caps side by side but the air inlet must always be at least 3 feet 0 91m horizontally and 12 inches 30cm below the closest flue outlet Do not install combustion air inlet caps above the flue outlets Maintain all clearances and installation requirements for multiple pool heater installations 6 Outdoor Installation Venting IMPORTANT Before installing a venting system follow all venting clearances
105. stant OFF Possible control fault check power LED may be effective do not replace control if all operational sequences function properly see TroubleShooting Guide One Flash Low Air check air pressure switch and hoses to pressure sensing points fan venting and sealing of pressurized chamber NOTE Brief flashing normal on fan start up proving Two Flashes Flame without call for heat check for a gas valve stuck in the open position air venting burners and the combustion process Fan will remain on Three Flashes Lockout due to flame failure push reset button on inner control panel after correcting ignition problem Initial heater start up without properly bleeding air from the gas line may require multiple reset functions to achieve proper ignition Four Flashes Igniter failure igniter will not maintain minimum 2 75 amp current draw caused by low voltage bad wiring continuity high resistance or igniter failure Five Flashes Power supply problem check for low supply voltage or transformer output less than 18 VAC Six Flashes Replace ignition module internal fault Access to Internal Control Panel The control panel is accessed by turning the knurled knob located at the bottom center of the exterior control panel Pull the panel out at the bottom The door will tilt into unit until it comes free from the outer top The outer control panel has an overlay attached to the exterior surface which ind
106. stem at least 4 feet 1 2m below 4 feet 1 2m beside or 1 foot 30cm above any door window or gravity air inlet into any building Locate vent termination at least 8 feet 2 4m horizontally from any combustion air intake located above the sidewall termination cap CAUTION Pool heaters which are shut down or will not operate may experience freezing due to convective air flow in the flue pipe through the air inlet or from negative pressure in the mechanical room In cold climates operate pump continuously to help prevent freezing of pool heater water Provide proper freeze protection See Freeze Protection page 7 TABLE Flue and Air Inlet Pipe Sizes Input Flue Air Inlet Btu hr Size Size 500 000 650 000 750 000 990 000 1 260 000 1 440 000 1 800 000 2 070 000 Minimum diameter for air inlet pipe Installer may increase diameter pipe size for ease of installation if needed Refer to the National Fuel Gas Code ANSI Z223 1 Vent Tables for additional guidance on vent sizing of fan assisted appliances Commercial Pool Heaters INSTALLATION Continued Combustion Air Inlet Piping WARNING Locate and install the combustion air inlet cap correctly Failure to do so can allow the discharge of flue products to be drawn into the combustion process This can result in incomplete combustion and potentially hazardous levels of carbon monoxide in the flue products This will cause operationa
107. sure for normal operation manometer or magnahelic gauge legible in 0 1 increments up to 10 inches w c is required to 10 Set the temperature control to call for heat see check and adjust the manifold pressure The Programming Temperature Control regulator cover screw on the gas valve must be in place and tight at all times for the pool heater 11 to operate properly Once the pool heater is firing the manometer magnahelic will reflect the Manifold Gas Pressure Compare this reading to the respective value in TABLE L for Natural Gas or Propane Gas 1 Remove the thumbscrew that fastens the control panel access door and pull out the control panel 12 If adjustment is necessary remove the regulator cover 2 Turn the power switch located in the lower left corner screw on the gas valve behind the control panel access door to the O or OFF position NOTE the gas valve under adjustment is located on a manifold assembly monitored by an igniter the pool heater may shut down and recycle when the regulator cover screw is removed This is normal 3 Remove the top front jacket access panels to access the gas valves 4 Locate the reference hose on the second gas valve which goes from the vent fitting on the gas valve to a barbed fitting on the deck of the pool heater see Figure 32 13 Turn the regulator adjustment screw clockwise r to raise the regulator gas pressure Turn the regulator adjustment s
108. t has one ignition module and one hot surface igniter Figure 46 Hot Surface Ignition Control Module Hot Surface Ignition Control Module Ignition Module Lockout Functions The ignition module may lockout in either a hard lockout condition requiring pushing of the reset button to recycle the control or a soft lockout condition which may recycle after an approximate five minute waiting period This soft lockout condition is intended to allow self correcting faults to correct themselves and permit normal operation A typical hard lockout fault is a flame failure condition An ignition module that is in a hard lockout condition may only be reset by pushing the reset button for the ignition control The reset button is located on the front of the control panel Upon a flame failure the reset button is only active after the control module has completed its post purge cycle Turning main power OFF and then or cycling the thermostat will not reset a hard lockout condition Wait five seconds after turning on the main power before pushing the reset button when the ignition module is in a hard lockout 39 The ignition module will go into a soft lockout in conditions of low air low voltage or low hot surface igniter current A soft lockout condition will operate the combustion air fans for the post purge cycle and then the ignition module will pause for approximately five minutes At the end of this timed pause the ignition
109. t the manifold from the gas train using the union s just below each gas valve s 5 Remove the mounting nuts from the manifold mounting brackets Pull the manifold orifice assembly away from the burners Repeat for each manifold assembly 6 Remove two mounting screws from the burner and slide the burner out toward the front of the pool heater Use caution to prevent damage to burners refractory hot surface igniter or wiring 7 Remove soot from the burners with a stiff bristle brush Dirt may be removed from the burner ports by rinsing the burner thoroughly with water Drain and dry burners before re installing Damaged burners must be replaced When installed in a dusty and dirty location the burners may require cleaning on a 3 to 6 month schedule or as needed based on severity of contamination Contaminants can be drawn in with the combustion air Non combustible particulate matter such as dust dirt concrete dust or dry wall dust can block burner ports and cause non warrantable failure The standard inlet air filter will help eliminate dust and dirt from entering the pool heater Heat Exchanger Cleaning 1 While burners are removed check the heat exchanger surface for sooting If present the heat exchanger must be cleaned and the problem corrected Proceed as follows 2 Remove gas manifold s orifice assemblies as described in steps 1 through 5 in Burner Removal and Cleaning this page 3 Disconnect the wiring from the hot s
110. taining the barometric damper should be approximately three feet vertically above the connection to the pool heater s flue outlet This location ensures that any positive velocity pressure from the pool heater s internal combustion fan is dissipated and the flue products are rising due to buoyancy generated from the temperature of the flue products Adjust weights on the damper to ensure that draft is maintained within the specified range 1 Conventional Negative Draft Venting IMPORTANT Before system installing the venting follow all venting clearances requirements found in the Venting General Information section page 10 Figure 17 Conventional Negative Draft Vertical Venting with Combustion Air Louvers This option uses Type B doublewall flue outlet piping The blower brings in combustion air The buoyancy of the heated flue products cause them to rise up through the flue pipe The flue outlet terminates at the rooftop Negative Draft The negative draft in a conventional vent installation must be within the range of 0 02 to 0 08 inches w c to ensure proper operation Make all draft readings while the pool heater 15 in stable operation approximately 2 to 5 minutes Installation and Service Manual Connect the flue vent directly to the flue outlet opening on the top of the pool heater No additional draft diverter or barometric damper is needed on single unit installations with a dedicated stack and a
111. ter in feet Input 0 50 51 100 101 200 201 300 301 500 650 000 1 1 2 2 1 2 2 1 2 mawe py p p Combination Gas Valves These pool heaters fire in a single stage of operation NOTE This pool heater incorporates a soft start feature which lights approximately half of the burners before lighting the remaining burners Each combination valve consists of a gas regulator and two valve seats to meet the requirements for redundant gas valves The valve has a gas control knob that must remain in the open position at all times when the pool heater is in service The gas control valve has pressure taps located on the inlet and discharge sides of the valve Manifold pressure is adjusted using the regulator located on the valve A manifold gas pressure tap for each burner stick is located on the discharge side of the valve 28 The manifold pressure is preset at the factory and adjustment is not usually required If you must adjust regulator pressure follow the instructions under Gas Manifold Pressure Adjustment page 30 Venting of Combination Gas Valves The combination gas valve regulator used on these pool heaters is equipped with an integral vent limiting orifice per ANSI Z21 78 The vent limiter ensures that the volume of gas emitted from the valve in the event of a failed gas diaphragm does not exceed the maximum safe leakage rate allowed by agency requirements Combination gas valve regulators equipped with integral vent limite
112. ter which may show signs of being hit or otherwise being mishandled Verify total number of pieces shown on the packing slip with those actually received In case there is damage or a shortage immediately notify the carrier Codes The equipment shall be installed in accordance with those installation regulations in force in the local area where the installation is to be made These shall be carefully followed in all cases Authorities having jurisdiction shall be consulted before installations are made In the absence of such requirements the installation shall conform to the latest edition of the National Fuel Gas Code ANSI Z223 1 and or CAN CGA B149 Installation Code All pool heater heat exchanger construction conforms to the latest edition of the ASME Boiler and Pressure Vessel Code Section IV Part HLW Warranty Factory warranty shipped with pool heater does not apply to pool heaters installed or operated improperly Improper installation or system design causes most operating problems 1 Excessive water hardness causing a lime build up in the copper tube is not the fault of the equipment and is not covered under the appliance manufacturer s warranty See Water Chemistry page 42 2 Excessive pitting and erosion on the inside of the copper tube may be caused by too much water velocity through the tubes and is not covered by the appliance manufacturer s warranty see Temperature Rise Chart on page 42 for flow requirements
113. th louver manufacturers for exact net free area of louvers Where two openings are provided one must be within 12 30 cm of the ceiling and one must be within 12 30 cm of the floor of the mechanical room Each opening must have a minimum net free area as specified in TABLE C page 12 Single openings shall be installed within 12 30 cm of the ceiling The combustion air supply must be completely free of any flammable vapors that may ignite or chemical fumes which may be corrosive to the pool heater Common corrosive chemical fumes which must be avoided are fluorocarbons and other halogenated compounds most commonly present as refrigerants or solvents such as Freon trichlorethylene perchlorethylene chlorine etc These chemicals when burned form acids which quickly attack the heat exchanger finned tubes headers flue collectors and the vent system The result is improper combustion and non warrantable premature pool heater failure Exhaust Fans Any fan or equipment which exhausts air from the mechanical room may deplete the combustion air supply and or cause a downdraft in the venting system Spillage of flue products from the venting system into an occupied living space can cause a very hazardous condition that must be immediately corrected If a fan is used to supply combustion air to the mechanical room the installer must make sure that 1t does not cause drafts which could lead to nuisance operational problems with the p
114. to the pool heater Both blowers operate in tandem anytime the ignition module is given a call for heat signal PRESSURE SWITCH Activated by Blower Turning On One pressure switch is provided to monitor its On Off operation Upon a call for heat 24VAC is delivered to the pressure switch If the blower generates adequate air pressure the pressure switch closes to deliver 24VAC to the ignition module s pressure switch monitoring input terminal PREPURGE Ignition Module Function Once the ignition module sees a 24VAC input from its pressure switch it runs the blowers for approximately 15 seconds in order to purge the combustion chamber of any unburned fuel air mixture IGNITER WARM UP AND PROVING Ignition Module Function Once the ignition module has completed its prepurge period it turns on the hot surface igniter Once the hot surface igniter s current draw reaches a proper level the ignition module begins an additional period of approximately 25 seconds for the igniter to ensure the ignition temperature is attained to ignite the fuel air mixture Commercial Pool Heaters SEQUENCE OF OPERATION Continued IGNITER Controlled by Ignition Module One igniter is provided in order to ignite the fuel air mixture and its operation and timings are controlled by the ignition module IGNITION AND FLAME PROVING Ignition Module Function Once the warm up and proving period has been completed the ignition module sends 24V
115. tructions If you cannot reach your gas supplier call the fire department Installation and service must be performed by a qualified installer service agency or the gas supplier Save this manual for future reference Commercial Pool Heaters Table of Contents General Product Information Special Instructions Unpacking Warranty Safety Information Product Identification Installation Locating Pool Heater Clearances from Combustible Construction Base for Combustible Floors Freeze Protection Combustion and Ventilation Air Combustion Air Filter Combustion Air Options Exhaust Fans Venting Support Vertical Vent Termination Clearances and Location Sidewall Vent Termination Clearances and Location 11 Combustion Air Inlet Piping Length of Air Inlet Piping Sidewall Air Inlet Vertical Rooftop Air Inlet Combined Air Inlet Points Barometric Damper Location 1 Conventional Negative Draft Venting 2 Vertical DirectAire Venting 3 Sidewall Venting 4 Horizontal DirectAire Venting 5 Direct Venting 6 Outdoor Installation Venting Connecting to Gas Supply Gas Pressure Test Gas Piping Connecting Gas Piping to the Pool Heater Gas Train and Controls Combination Gas Valves Venting of Combination Gas Valves Checking Gas Supply Pressure Gas Manifold Pressure Adjustment Table of Contents Pool Heater Piping Installation Auxiliary Mixed Water Limit Control Relief Valve Water Flow Switch
116. try tray see Figure 40 6 Turn the power switch to the OFF position 7 This pool heater is equipped with an ignition device which automatically lights the burners Do not try to light the burners by hand Open the front access panel to access the control panel 2 Turn the power switch to the OFF position 3 Turn the manual gas cock clockwise r to the OFF position WARNING Should overheating occur or the gas fail to shut off turn off the manual gas control valve to the pool heater INLET PRESSURE REGULATOR ADJUSTMENT UNDER CAP SCREW 1 8 HEX INLET PRESSURE TAP GAS VALVE CONTROL KNOB REFERENCE HOSE CONNECTION WIRING 1 8 HEX MANIFOLD TERMINALS Figure 39 Control Panel Cover OUTLET ON OFF SWITCH Figure 41 Combination Gas Valve Pre Start Checklist Before attempting to start the pool heater verify that the following items have been checked 1 Verify proper location and installation of the pool heater 2 Check gas piping and ensure the gas line is purged of all air Ensure that the pool is properly filled DO NOT operate pool heater if improperly filled Check to ensure that all water connections are tight Relief valve has been piped to a suitable floor drain Combustion air openings are not obstructed in any way Figure 40 ON OFF Switch 8 Turn the manual gas cock clockwise to the OFF position 9 Wait five 5 minutes to clear out an
117. ured by the Ryznar Stability Index This index is calculated by a formula which uses operating temperatures total alkalinity pH calcium hardness and total dissolved solids The Ryznar Stability Index 15 able to predict more accurately the scaling or corrosive tendencies of swimming pool water Balanced water within the guidelines of the Ryznar Stability Index are from 6 3 6 7 Use of the Ryznar Stability Index may help prolong the service life of pool equipment which in turn will be a cost savings to the commercial pool owner Your pool dealer can provide additional data and equipment to make this measurement if a problem exists Pipe Size Requirements The pipe sizing chart provides the minimum pipe size for common manifold piping to ensure adequate flow 43 TABLE S Pipe Sizing Chart Common Pipe Size Min Number of Units 500 000 750 000 Btu hr Models 5 Number of Units 990 000 2 070 000 Btu hr Models Common Pipe Size Circulating Pump This pool heater is factory supplied with a properly sized pump that circulates water between the pool heater and system Pump is sized to pool heater input and water hardness See Water Chemistry on page 42 Lubricate the pump to the manufacturer s recommendations Pump damage due to inadequate lubrication is non warrantable Use SAE 30 non detergent oil or lubricant specified by the pump manufacturer Standard pool heaters are furnished with the following circu
118. urface igniter and the hoses from the burner pressure tap 4 Remove inner jacket panel mounting screws and slide the door assembly out toward the front of the pool heater Use caution to prevent damage to the refractory and hot surface igniter 5 Check V baffles along the front and back edges of the heat exchanger Remove and clean if necessary 6 Remove soot from the heat exchanger with a stiff bristle brush Use a vacuum to remove loose soot from the surfaces and inner chamber 7 The heat exchanger can be removed by sliding towards the front of the pool heater Once the heat exchanger is removed from the pool heater a garden hose can be used to wash the tubes to ensure that all soot is removed from the heat exchanger surfaces NOTE Do not wet the pool heater s refractory 8 Ensure that all burner ports are cleaned to remove any soot See Burner Removal and Cleaning this page 9 Carefully reinstall the heat exchanger baffles and frame runners if removed from the pool heater Commercial Pool Heaters CLEANING AND MAINTENANCE Continued NOTE Make sure frame runners seal securely where they contact the front and rear compartment refractory 10 Carefully reinstall inner jacket panels burners manifolds wires and hoses Use new gasket material to ensure a proper air seal Reassemble all gas and water piping Test for gas leaks Reassemble outer jacket panels Cycle the pool heater and check for proper operatio
119. y gas If you smell gas STOP Follow in the safety information If you don t smell gas go on to the next step d y LAM qe 36 Installation and Service Manual Starting the Filter System Verify proper installation of the pool heater temperature controls and the installation of the 110 F auxiliary limit in the mixed discharge water from the filter piping to the pool Clean the filter Start the filter pump Be sure all air is out of all the lines including the pressure connection Ensure that the pool heater 15 not bound by manually opening the temperature and pressure relief valve Leave the valve open until a steady flow of water is observed at the discharge from the valve Close the valve and complete filling the system Ensure that a manual bypass valve is installed in the filter system and installed between the pipe connection supplying the water to the pool heater and the return from the pool heater to the filter system Adjustment of this valve will divert a portion of the water flow from the filter system to the pool heater for heating NOTE Backwash the filter when the G P M filtration rates are too low to meet local codes or state code A high temperature rise across the pool heater is also an indication of low flow in the filter system Sustained low flow to the pool heater will result in cycling of the heater on the limit controls and possible opening of the relief valve Figure 42 Vertical

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