Laarsen Associates Lite 2 LG, LD User's Manual
Contents
1. 13 2G 6 Adjusting the Pressure Switch 13 2G 7 Automatic Flow Control Valve 14 2G 8 Temperature 14 2G 9 Adjusting the Manual Bypass Valve 15 SECTION 3 Operating Instructions 3A General Information 16 3B Lighting and Shutdown Procedures 16 3B 1 Model LD Direct Ignition 16 3B 2 Model LG Standing Pilot 16 3C Setting the Temperature Control 16 3D Seasonal 19 30 1 Spring Fall Operation 19 30 2 Winterizing 19 30 3 Spring Startup 19 Water Chemistry 20 3F Spa Hot Tub Safety Rules 20 3G Swimming Pool Energy Saving Tips 20 3H Periodic Inspection 21 3H 1 Owner 21 3H 2 Professional Inspection 21 SECTION 4 Parts List for Laars Lite 2 Heater 4A General Information 21 4B netta Dated iiem 21 Model LG amp LD Pool and Spa Heater SECTION 1 General Information 1A Introduction This manual provides installation and operat2. 8 Disconnect the pressure switch from the siphon loop copper tubing see Figure 22 3D 3 Spring Start up To restart the heater in the Spring have a profes sional service technician reassemble the heater as follows 1 the siphon loop with approximately 5cc of SAE 50 non detergent oil Attach the copper tubing to the pressure switch see Figure 22 2 Tighten the drain plugs 3 Turnon the filter pump and circulate water through the heater for 5 minutes Check for leaks while circulating 4 Turn on the main gas supply valve to the heater outside the heater jacket 5 Turn on the heater following the lighting instruc tions found on the inside of the heater or pages 17 LD or 18 LG of this manual OIL TO HERE SPRING START UP SYPHON LOOP PRESSURE SWITCH DISCONNECT HERE WINTERIZING DRAIN PLUG INLET OUTLET SIDE Page 20 WATERPIK TECHNOLOGIES INC 3E Water Chemistry For notes on water chemistry please consult sections 2G 4 2G 4a and Table 7 on page 13 of this manual 3F Spa Hot Tub Safety Rules AWARNING The following Safety Rules for Hot Tubs recommended by the U S Consumer Product Safety Commission should be observed when using the spa 1 Spa or hot tube water temperature should never exceed 104 F 40 C One hundred degrees Fahrenheit 100 F 38 C is considered safe for a healthy adult Special caution is recommended for y
3. No derating necessary up to altitude of 2 000 feet 609 m In United States derate input 4 percent for each 1 000 feet 305 m above sea level starting at 2 000 feet 609m 2 The Laars Lite 2 is constructed for 75 psi working pressure 3 Ratings shown are for both natural and propane gas Figure 1 General Configuration Page 2 WATERPIK TECHNOLOGIES INC Gas Fired Pool Heaters ANSI Z21 56 and in Canada with CAN1 4 7 M85 Certain sections of this manual are specific to either United States or Canadian installations and are labeled as such 1B Description The Laars Lite 2 LD heater gets electrical power from an external 120VAC or 240VAC source and provides a dual thermostat Flex Temp control system for pool spa combinations or preheat convenience The Laars Lite 2 LD heater also meets the California New York Hawaii and Oregon state energy requirements for intermittent ignition gas appliances The Laars Lite 2 LG heater is a self contained standing pilot unit and requires no external power The Laars Lite 2 heater is specifically designed for heating swimming pools and spas Do not use it as a general service water heater There is a specially designed model of Laars Lite 2 for heating salt water pools Consult your dealer for the appropriate Waterpik Laars products for these applications 1C Warranty The Laars Lite 2 heater is sold with a limited factory warranty Details are specified on the back cover
4. the heater will automatically shut off but the filter pump will keep running Caution Do not use this heater if any part has been under water Immediately call a qualified service technician to inspect the heater and replace any part of the control system and any gas control which has been under water A Attention N utilisez pas cet appareil s il a t plong dans l eau m me partiellement Faites inspecter l appareil par un technicien qualifi et remplacez toute partie du syst me de contr le et toute commande qui ont t plong s dans l eau ACaution Should overheating occur or the gas supply fail to shut off turn off the manual gas control valve to the heater Attention En cas de surchauffe ou si l alimentation en gaz ne s arr te pas fermez manuellement le robinet d arr t de l admission de gaz Caution Keep all objects off the top of the heater Blocking air flow could damage the heater and may void the warranty NOTE If your LP tank runs out of fuel turn off gas at the heater After the tank is refilled the heater must be relit following the instructions found on the inside of the heater DO NOT attempt repairs on the gas control or heater Tampering is dangerous and voids all warranties 3B 1 Model LD see Page 17 3B 2 Model LG see Page 18 3C Setting the Temperature Control The temperature control see Figure 18 is calibrated a
5. 63 126 813 325 82 164 1058 400 100 200 1290 Note If using screens and or louvers compensate by adding 50 additional area to each opening When a drafthood is used it must be connected to a vent pipe which stops at least 2 feet 0 61 meters m above the highest point of the roof or other object that is within 10 feet 3 05 m from the vent termina tion The vent pipe must have a listed vent cap which allows a full equivalent opening for flue products see Figure 2 2C Site Location AAWARNING Improper installation or maintenance can cause nausea or asphyxiation from carbon monoxide in flue gases which could result in severe injury or death 2C 1 Installation Information Avoid placing the heater in locations where it can cause damage by water or condensate leakage If this is not possible provide a suitable drain pan to catch and divert any leakage The pan must not block natural flow of air around the heater Locate the heater so the clearances from combus tible surfaces shown in Table 2 are met Table 2 Minimum Heater Clearances From Combustible Surfaces 6 15 2 15 2 30 5 111 7 45 7 us ema 6 6 32 Outdoors Installation Canada 15 2 15 2 45 7 111 7 91 4 Page 4 WATERPIK TECHNOLOGIES INC 2C 2 Outdoor Installation Laars Lite 2 heaters can be installed in the low profile grate top configuration
6. Heater Page 9 ATTACH GROUND WIRE TO GREEN GROUND SCREW Figure 8 Field Wiring Connections LD TO LIMIT SWITCHES TO LIMIT SWITCHES FIELD PROVIDED WIRING TERM 1 WHITE FACTORY 2 01 INSTALLED WIRE TERM 2 FUSIBLE LINK FUSIBLE LINK HEATER WIRING BEFORE MODIFICATION MODIFIED HEATER WIRING WITH TIME CLOCK INSTALLATION Figure 9 Time Clock Wiring To install a time clock auxiliary switch into the heater wires see Figure 9 Remove heater door 2 Removethe factory installed wire between terminals 1 and 2 on the terminal strip see Figure 9 3 Connectthe wires from the time clock auxiliary switch to the two terminals Use American Wire Gage AWG No 14 gauge stranded copper wire with a temperature rating of 221 F 105 C or greater The length of the wire between the heater and the time clock should not exceed 10 15 feet 4 57 m The contact points of the time clock switch should be silver or a low resistance alloy 2F 3 Remote Operation Model LD Only The Laars Lite 2 pool spa heater controls can be wired for remote operation The CS 02 remote control permits switching from one temperature controller to the other and turning the heater on and off from a remote location The CS 04 includes the same features as the CS 02 plus a remote tempera ture controller Contact Waterpik Laars for further information Reference part numbers CS 02 and CS 04 An
7. Th 1 1 the following procedures to adjust the bypass valve a The su as volume is too low DET 1 Clean pool filter b The system s water flow exceeds 125 GPM 2 474 LPM and requires a manual bypass valve proper operation see Figure 19 Remove drain plug located on the inlet outlet header of the heater and replace it with a Pete s plug 12 Ifthe temperature rise is above the maximum 3 Insert a pocket thermometer see Figure 17 there is not enough water flowing through the through the Pete s plug into the header heater Check for clogging in the water filter or 4 UE Close manual bypass valve restriction in the water pipes 5 rotary switch LD the rocker switch LG on the temperature control to the OFF Caution Operation with the temperature rise above 6 Repeat steps 6 through 10 of the temperature rise maximum or below the minimum can damage test see Section 2G 8 the heater and may void the warranty 7 Ifthe temperature rise is below the minimum stated in Table 6 open the manual bypass valve 13 Ifthe temperature rise is within the correct range until temp rise climbs between the min and max complete the procedure as follows range for your size heater If the minimum temperature rise stated in Table 6 cannot be reached with the manual bypass fully open then the gas supply volume is too low c Remove thermometer and Pete s plug 8 Ifthe tempe
8. U S A only as received from the factory or with an optional high wind vent cap stack Canadian units require a factory approved vent cap USA 4 ft 1 22 m CANADA 10 ft 3 05 m HE Figure 3 Outdoor Heater Installation Locate the heater in an open unroofed area Do not install the heater under a deck Do not locate the heater below or adjacent to any doors glass openings louvers grills etc which connect in any way with an inhabited area of a building even though the access might be through another structure e g a garage or utility room In the United States there must be a minimum of 4 feet 1 22 m horizontally or vertically between the heater and any door glass opening or gravity inlet to a building In Canada this distance must be at least 10 feet 3 0 m see Figure 3 WARNING United States Do not install the heater with the top of the vent assembly within 4 feet 1 22 m of any opening into a building Canada Do not install the heater with the top of the vent assembly within 10 feet 3 05 m of any opening into a building If the heater is installed under an overhang there must be a minimum clearance of 5 feet 1 5 m above the top of the heater and the structure should not overhang the heater more than 12 inches 0 30 m The area under the overhang must be open on three sides This prevents combustion gases from being diverted into living areas through doors w
9. control down to the MIN setting This prevents the pool from water from becoming chilled and minimizes the time re quired to raise the pool water back up to the desired temperature In areas subject to only short freeze periods turn off the heater and run the pump continuously for the length of the freeze period If the heater is not going to be used for a long period of time shut it down completely Follow the instructions found on the inside of the heater or pages 17 LD or 18 LG of this manual 3D 2 Winterizing In areas where freezing temperatures occur in winter and the pool or spa will not be used have your service technician perform the following steps 1 Turn off the main gas supply valve to the heater outside the heater jacket Remove heater door Shut down the heater following the shutdown instructions found on the inside of the heater 4 Remove the drain plug from the return header see Figure 21 loosen the drain plug from the inlet outlet header and completely drain the heater before the first frost 5 After all water has drained from the heater remove the drain plug from the inlet outlet side Check for mineral buildup in the openings e S DRAIN PLUG DRAIN PLUG RETURN SIDE Figure 21 Heater drain locations 6 Use compressed air to blow out any standing water remaining in the heat exchanger 7 Grease the threads on the drain plugs and rein stall plugs but do not tighten
10. floor because some gas is heavier cian Force or attempted repair may result in than air and will settle on the floor a fire or explosion WHAT TO DO IF YOU SMELL GAS use this appliance if any part has Do not try to light any appliance been under water Immediately call a quali Do notio ch electric switch do not fied service technician to inspect the appli y i ance and to replace any part of the control use any phone in your b llding system and any gas control which has been Immediately call your gas supplier from a under water neighbor s phone Follow the gas supplier s instructions OPERATING INSTRUCTIONS STOP Read the safety information above 7 Push the button of the sparker repeating until Set the thermostat to lowest setting and turn confirming that pilot lights by observing appliance ON OFF switch to OFF reflection on burner tray mirror Turn gas control knob clockwise until it Continue to hold the control knob down for stops at OFF position about one 1 minute after the pilot is lit If it Wait five 5 minutes to clear out any gas If gees out repeat steps through you then smell gas STOP Follow B in the If knob does not pop out when released safety information above If you don t smell stop and immediately call your service To find pilot follow gas If the pilot will not stay lit after several tries line from gas valve to pilot turn the gas cont
11. interrupt on off type remote can be connected by removing the jumper wire on the terminal block located in the control compartment see Figure 6 and connecting the two wires from the remote to the two terminals on the terminal block This type of remote control will turn the heater on or off but will not switch between the two temperature controllers on the temperature control panel or allow for temperature adjustments To connect a 3 wire remote not supplied by Waterpik Laars to a Laars Lite 2 LD heater order a wire harness assembly part No E0120000 which connects to the temperature control panel Installation instructions are included with the wire harness assem bly Consult with Waterpik Laars Service Department with questions about installing remotes other than Waterpik Laars 2G Water Flow System 2G 1 Flange Installation The heater has 2 NPT universal header cou plings You can connect threaded 2 NPT iron pipe unthreaded 1 1 2 iron pipe 1 1 2 or 2 copper pipe without an adapter see Figure 10 Plastic piping PVC Schedule 40 can be con nected to the heater if local codes allow it by using the CPVC nipples included with your heater To install plastic piping see Figure 11 1 Remove CPVC nipples from plastic bag 2 Screw CPVC nipples into metal flange until tight using teflon tape on plastic threads 3 Attach PVC plumbing to CPVC pipes using PVC to CPVC cement only Page 10 WATERPIK TECHNOL
12. of this manual A copy of the warranty and a warranty registration card are included in the plastic bag shipped with the heater Fill out and return the warranty registration card Make all warranty claims to an authorized Waterpik Laars representative or directly to the factory Claims must include the heater serial number and model this information can be found on the rating plate installation date and name of the installer Shipping costs are not included in the warranty cover age Damage caused by improper installation or assembly or to the heat exchanger by corrosive water is NOT covered by the Warranty See Section 3D for maintaining proper pool water chemistry NOTE Keep this manual in a safe place for future reference when inspecting or servicing the heater 1D Technical Assistance Consult Waterpik Laars or your local distributor with any questions or problems involving the specifica tions installation and operation of your Waterpik Laars equipment An experienced technical support staff is ready to assist in assuring the proper perfor mance and application of Waterpik Laars products For technical support call 415 382 8220 extension 260 SECTION 2 Installation Instructions 2A General Information Install the Laars Lite 2 heaters vent caps and drafthoods in accordance with the procedures in this manual local codes and ordinances and in accordance with the latest edition of the National Fuel G
13. through the masonry see Figure 4 If the heater is installed in a carpeted alcove the entire floor of the alcove must be covered by a noncombustible panel You can obtain a noncombustible base from Waterpik Laars see the Parts List Sec 4 of this manual 2C 4 Indoor and Outdoor Shelter Installations All indoor installations and outdoor shelter installations Canada require the addition of a factory approved drafthood The drafthood must be installed Model LG amp LD Pool and Spa Heater Page 5 without modification and in accordance with all local state provincial and national codes Proper ventilation of exhaust and combustion air are essential for the safe operation of the heater 2D Combustion and Ventilation Air Supply All indoor installations must have openings to outside air for combustion ventilation and dilution of flue gases from inside the building see Figure 2 and Table 1 Waterpik Laars does not recommend indoor installations that do not provide combustion air from outside the building All outdoor shelter installations Canada only must have uninterrupted openings to outside air for combustion and ventilation The installation must be in accordance with the latest edition of CAN CGA B149 Waterpik Laars does not recommend outdoor shelter installations that depend on internal air for combustion Combustion air should be ducted to the heater from outside the structure If the heater is installed in
14. 0 Hz AC requires rewiring of the heater This should be done by a certified electrician only as with all wiring To wire the heater for 120 Volt 60 Hz AC follow the alternate 120V wiring method depicted in Figure 6 Additionally the ignition control module must be rewired The wire from the terminal marked IGN 240 must be removed from that terminal and placed on the terminal marked IGN 120 Electrical wiring must be in accordance with the latest edition of the National Electric Code NEC ANSI National Fire Protection Association NFPA 70 unless local code requirements indicate otherwise To wire the Laars Lite 2 model LD heater to a 120V or 240V 60 Hertz Hz electrical source Remove the screw located to the lower right side of the transformer and open the hinged cover of the wiring enclosure 2 Connect the wires from the power source to the leads on the right side of the heater in the space behind the ignition control see Figure 8 Be sure to follow the wiring diagram on page 7 to config ure the transformer for the correct input voltage 3 Attach the ground wire to the green ground screw located on the back panel of the wiring enclosure Close the cover of the wiring enclosure and replace the screw to hold it in place 5 Connect a bonding wire 8 ga copper to the bonding lug on the right side of the heater NOTE No external junction box is required Model LG amp LD Pool and Spa Heater Page 7 MODEL LD
15. 1 Pressure Switch 2 PSI 0013200 101 Complete 125 400 R0316701 05 41 Pressure Switch 1 PSI Al R0011300 41 Pressure Switch 1 10 PSI A R0015500 JACKET COMPONENTS 42 Siphon EROR Assembly A R0057800 102 Door with Latch 125 400 R0343601 05 REM m Ai 103 Jacket Assembly Less Top Assembly 125 400 R0343501 05 igh Limit Switch 135 0022700 104 Closure Inlet Outlet All R0344300 45 High Limit Switch 150 F All R0023000 105 Gap Closure Return All R0344400 46 High Limit Switch Retainer Boot A 50098900 106 Button Plug 4 3 4 All F0035300 47 High Limit Switch Wire All 10419300 107 Button Plug 7 8 All F0032300 48 High Limit Switch Retainer Clip All 10418400 SOR ARR 49 High Limit Switch Cover All 10418300 108 Button Plug 2 With hole for gas line All F0056600 50 Fusible Link Assembly All R0012200 OPTIONAL COMPONENTS SS Bink Bracket 10479900 Non Combustible Base 125 400 10521701 05 52 Terminal Block Al R0097800 Pressure Relief Valve 3 4 NPT 75 PSI All R0040400 53 Ignition Control Assembly LD All R0344600 Touch Up Spray Paint Light Beige All X0021100 54 Ignition Control LD All R0344500 US 28 ee Assembly Not Shown All R0059800 Fiame Sense Rod AI 56 Transformer 115V 220V 24V Not Shown All 80061100 Igniter Condensate Shield Retrofit LD All R0334200 57 Ignition Control Panel Not Shown All 10451200 Notes 58 In Line Fuse Assembly Not Shown All 10480000 1 For alt
16. 3 000 to 6 000 feet 915 to 1 830 m for natural gas and 5000 to 10 000 feet 1525 to 3050 m for propane gas b High altitude J 6 000 to 10 000 feet 1830 to 3 050 m In Canada the heater rating plate is marked for specific altitude requirements lo altitude is 0 to 2 000 feet 0 to 610 m and high altitude H is 2 000 to 4 500 feet 610 to 1 370 m above sea level for natural gas and 0 to 4500 feet 0 to 1370 m for propane gas Use the figures in Table 3 to size the gas inlet piping from the gas meter to the heater Check all local codes for compliance before installing the heater Table 3 Natural Gas Pipe Size Requirements Distance from Gas Meter 0 50 feet 50 100 feet 100 200 feet Heater 0 15 m 15 30 m 30 60 m Size in mm in in mm 125 3 4 19 1 25 4 1 25 4 175 1 25 4 1 25 4 1 1 4 31 75 250 1 25 4 1 1 4 31 75 1 1 4 31 75 325 1 1 4 31 75 1 1 4 31 75 11 1 2 38 400 1 4 81 75 fl 1 2 38 1 1 2 38 Notes 1 These numbers are for natural gas 0 65 Sp Gr and are based on 1 2 inch 18 mm water column pressure drop Check supply pressure with a manometer and local code requirements for variations For liquefied petroleum gas reduce pipe diameter one size but maintain a 3 4 inch 13 mm minimum diameter 2 Check supply pressure and local code requirements before proceeding with work B Pipe fittings must be considered when determining gas pipe sizin
17. ERPIK TECHNOLOGIES INC 2F 2 Auxiliary Time Clock Wiring LD efficient operation by removing any residual heat If you install a time clock to control the filter contained in the heat exchanger back to the pool pump operation it is recommended that the time clock have its own low voltage Fireman s switch to turn off ACaution the heater before turning off the pump The switch should shut off the heater about 15 minutes before the filter pump shuts off This will allow for a more Do not provide power to the heater from the high voltage side of the time clock Doing so may cause damage to the heater or surrounding plumbing MILLIVOLT HEATER WIRING DIAGRAM High High imit Connection ELM it TEMP CONTROL Diagram BK Black W White Y Yellow R Red O Orange Fireman Switch Connection Pressure Switch IGINAL WIRE AS HEATER MUST BE PPLIANCE WIRING MATERIAL RATED FOR 105 C MUST BE USED WHEREMARKED THUS mmm APPLIANCE WIRING MATERIAL FOR p Piezo 200 C MUST BE USED Sparker E R To Pilot Generator Pilotstat Power Unit Coil Fireman 150 135 Fusible Switch Hi Limit Hi Limit Pressure On Off Link Connector Switch Switch Switch Valve Operator CIRCUIT Coil Sen Sen H0166000G Figure 7 LG Connection Schematic Wiring Diagram Model LG amp LD Pool and Spa
18. H0235900 Installation and Operation Data FOR YOUR SAFETY This product must be installed and serviced by a profes sional service technician qualified in pool heater installation Improper installa tion and or operation could create carbon monoxide gas in flue gases which could cause serious injury property damage or death Improper installation and or operation will void the warranty Installation and Operation Manual Laars Lite 2 Pool and Spa Heater Models LG and LD Natural Gas or LP Gas NOTE LD LP Gas For Outdoor Use Only vts ree cies AAWARNING If these instructions are not followed exactly a fire or explosion may result causing property damage personal injury or death Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance WHAT TO DO IF YOU SMELL GAS 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 nearby phone Follow the gas supplier s instructions 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 Laars TABLE OF CONTENTS SECTION 1 General Information 1A Introduction 1 1 x te dt A es 2 1C Warranty istic Een ete de
19. OGIES INC yd 7 ij FOR NONTHREADED PIPE OR TUBE DISCA PLASTIC SLEEVE METHOD FOR INSTALLING ANY 2 NPT THREADED PIPE M FOR OR PVC PIPE USE PLASTIC SLEEVE CVPC NIPPLE PROVIDED Figure 10 Piping installation HEADER 2 in PVC FITTINGS USE CPVC TO PVC CEMENT ONLY TO GLUE JOINTS Figure 11 Plastic piping connections 2G 2 Reversible Water Connections Waterpik Laars ships the Laars Lite 2 heater with the water connections on the right side The Laars Lite 2 heater can be installed with the water connections on either side It could be necessary or helpful to switch the connections to the left side to improve access for installation and service Perform this modification before installing the heater using the following proce dures TOP REAR RAIN SHIELD PANEL OMITTED ON CANADIAN MODELS HEX HEAD SCREW Q TRANSITION PLATE 2 TOP OMITTED ON U MODELS CLOSURE EXCHANGER FIBERGLASS INSULATION HEADER RUBBER JACKET PLUG GROMMET DRAIN PLUG Figure 12 Heat exchanger reversal Model LG amp LD Pool and Spa Heater Page 11 1 Remove heater door 2 If there is a vent cap or drafthood indoor on top of the heater remove it 3 Remove all 8 hex head screws fastening the top and lift the top assembly straight up see Figure 12 Remove rainshield assembly and set it aside 5 Remove screws that faste
20. Rainshield Kit US Only 125 400 R0318301 05 2 Pilot Burner LPG All R0096600 61 Rainshield Kit Canada Only 125 400 R0318311 15 3 Pilot Electrode All W0040000 62 Flue Collector Assembly US Only 125 400 R0316401 05 4 Pilot Generator All W0036901 62 Flue Collector Assembly Canada Only 125 400 R0316406 10 5 Ceramic Insulator Assembly All 10418820 63 Outdoor Vent Cap US Only 125 400 10561501 05 6 Burner Main w Pilot Bracket All 10457500 63 Outdoor Vent Cap Canada Only 125 400 10561511 15 7 High Voltage Lead Assembly All R0099000 64 Indoor Drafthood US Only 125 400 10561401 05 8 Pilot Tubing All R0037000 64 Indoor Drafthood Canada Only 125 400 10561411 15 9 Piezo Lighter Assembly All R0096800 65 Flue Transition Plate US Only 125 400 10861901 05 10 Pilot Condensate Shield LG All R0323300 66 Adapter Plate 125 400 10535301 05 11 Ignitor LD All R0317200 67 Clip All 10211000 68 Flue Collector Hold Down Clamp All 10726000 MAIN GAS ASSEMBLY 12 Burner Tray Assy NAT LG 125 400 R0098601 05 WATER SYSTEM 12 Burner Tray Assy LPG LG 125 400 R0098701 05 69 Inlet Outlet Header 2 All R0056400 12 Burner Tray Assy NAT LD 125 400 R0316901 05 69 Inlet Outlet Header Bronze 2 All R0016800 12 Burner Tray Assy LPG LD 125 400 R0319501 05 70 X Return Header Includes set of 9 gaskets All R0058300 13 Burner Tray Shelf Only 125 400 R0317001 05 70 X ReturnHeader Bronze Includes set of 9 gaskets All R0054600 14 Gas Valve NAT LG All R0096400 71 H
21. WIRING DIAGRAM NOTE IGNITION WIRE IF ORIGINAL WIRE SUPPLIED WITH HEATER FACTORY WIRED 120 V 240 V MUST BE REPLACED APPLIANCE WIRING FIELD WIRED 120V 240V MATERIAL RATED AT 105 C SHALL BE USED FACTORY WIRED 24 V WIRING SHOWN AS SHALL USE REMOTE APPLIANCE WIRING MATERIAL RATED AT 200 C CONNECTOR BK SWITCH FUSIBLE TRANSFORMER LIMIT LIMIT CONNECTION ELEC 240 V Wow W LINK FUSE eg gt WATER PRESSURE TEMP SWITCH ATTACH WIRE TO IGN 120 FOR 120 VOLTS Desir GROUND o IGN 120 WIRE TO IGN 240 M WIRE wo IGN 240 FOR 240 VOLTS pk HERE LI HONEYWELL 2 GAS VALVE GN IGNITION CONTROL o FS FENWAL o TH o VALVE TRANSFORMER 120 240V 124 V PHASE ATTACH a Connection Diagram L1 12 SHOWN 5 9 ono 6 P BK Black PRESSURE 150 135 FIREMAN FUSIBLE gum T ciun SWITCH HELIMIT switcH FUSE M Si SWITCH SWITCH CONNECTOR 1 25 AMP O Orange Yellow amp Black W BK White amp Black WIR White amp Red POOL SET POINT GY Green amp Yellow SPA SET POINT TH 620 or IGN240 SEMEN UN NIRE EY IGNITION CONTROL IGNITOR FLAME SENSOR b Schematic Diagram H0236300 Figure 6 LD Connection Schematic Wiring Diagram Page 8 WAT
22. a residential garage or where flammable vapors will be present the burners must be 18 inches 457 mm above the garage floor Refer to the latest edition of the National Fuel Gas Code for more information In Canada refer to the latest edition of the Gas Installation Code CAN CGA B149 2E Gas Supply and Piping 2E 1 General Instructions Review the following general instructions before continuing the installation AAWARNING Do not convert this heater from natural gas to propane gas or propane to natural Field conversion could create carbon monoxide gas which can cause property damage serious injury or death 1 Gas piping installation must be in accordance with the latest edition of ANSI Z223 1 and all local codes In Canada the installation must be in accordance with CAN B149 1 or 2 and all local codes that apply 2 Check the rating plate to make sure the heater is fitted for the type of gas being used Waterpik Laars heaters as shipped from the factory are certified to operate at an altitude of 0 to 3000 feet 0 to 915 m for natural gas and 0 to 5000 feet 0 to 1525 m for propane gas in the United States Or if so ordered at higher altitudes For higher altitudes the heater manifold is marked with a tag or sticker indicating one of the following high altitude operation codes Manual Shutoff Gas Supply Inlet Figure 5 The proper design for a sediment trap drip leg a High altitude H
23. as Code ANSI Z223 1 In Canada the installation must be in accordance with CAN1 B149 1 or 2 and local codes The authority having jurisdiction may require that the installation conform to the Standard for Gas Fired Heaters ANSI Z21 56 Any changes to the heater gas controls gas orifices wiring draft diverter or im proper installation may void the warranty If field conditions require change to any of the above consult the factory All gas fired products require correct installation to assure safe operation The requirements for pool heaters include the following 1 Field assembly if required 2 Appropriate site location clearances and flooring Sufficient combustion and ventilation air Properly sized gas meter and piping Proper electrical wiring if required Adequate water flow QN UA This manual provides the information needed to meet these requirements Review all application and installation procedures completely before continuing the installation 2B Field Assembly The Laars Lite 2 heater is shipped from the factory with the top assembly in the low profile configuration for outdoor installation in the U S In Canada an outdoor installation requires the addition of a factory approved vent cap The Laars Lite 2 heater is design certified for indoor installation when equipped with a drafthood which must be installed without modification The Laars Lite 2 heater is also certified for installati
24. ch the heater 7 Record the temperature indicated by the ther mometer cold water 8 Turn the heater ON following the lighting in structions found on the inside of the heater 9 Allow the heater to run for about 3 minutes Record the new temperature reading heated water 10 Subtract the first temperature reading cold water from the second temperature reading heated water The difference between the two readings is the temperature rise The temperature rise should be within the range shown in Table 6 Table 6 Temperature Rise and Minimum Flow Rates Minimum Minimum Maximum Size GPM LPM 125 20 76 27 15 36 20 175 20 76 33 19 42 24 250 25 95 33 19 42 24 325 30 114 28 16 38 21 400 30 114 30 17 39 22 Model LG amp LD Pool and Spa Heater Page 15 3 WAY CHANGEOVER VALVE SKIMMER MAIN POOL E RETURN BALANCING VALVES FROM SKIMMER AND DRAIN HEATER MANUAL BY PASS MANUAL BY PASS DETAIL MANUAL BY PASS IS USED WHEN FILTRATION RATE EXCEEDS 125 GALLONS PER MINUTE Note When using metal pipe as heat sink join metal and PVC CPVC using metal male and PVC CPVC female connection Figure 20 Typical installation 1l Ifthe temperature rise is below the minimum 2G 9 Adjusting the Manual Bypass Valve range indicated two possibilities arise After the manual bypass valve is installed use
25. corrosion in and around the valve With the filter pump on lift the release lever on the top of the valve to make sure that water runs freely through it If corrosion is found replace the pressure relief valve When replacing the valve be sure that the pump is off Install the valve so that the discharge is directed away from any area the may be damaged by water 5 Besureall combustion air and ventilation open ings are not blocked 3H 2 Professional Inspection In addition annual inspections by a qualified professional technician are recommended to keep the heater operating safely and efficiently through the years The following basic checks should be performed Check for loose or broken wires and terminal connections 2 Verify pressure switch operation by cycling the spa pump on and off a few times The heater should go off immediately after the pump stops 3 Inspect the electrical controls specifically the following a High limit controls b Pressure switch c Temperature control d Automatic gas valve 4 Inspect the venting system for blockage leakage and corrosion 5 Check for spider webs in the pilot and main burner orifices especially at Spring start up 6 Conduct a normal operating cycle and observe that the sequence proceeds as intended 7 Inspect the external surfaces of the heat exchanger tubes for black carbon soot buildup by placing a mirror between and under the burners when th
26. e heater is firing Remove any soot that has collected on the tubes and correct the cause NOTE After installation and first start up check the heat exchanger for black carbon soot buildup after the following periods of operation 24 hours 7 days 30 days 90 days and once every 6 months thereafter Proper flames appear a Blue in color b 1 to 4 inches 25 to 102mm high above burner surface SECTION 4 Parts List for Laars Lite 2 Heater 4A General Information To purchase parts or obtain a comprehensive maintenance manual for the Laars Lite 2 heater contact your nearest Waterpik Laars dealer or distributor If they cannot supply you with what you need contact the Customer Service Manager Waterpik Laars 21 Pimentel Ct Novato California 94949 Telephone 415 382 8220 extension 245 4B Parts List The following three pages contain a parts list general exploded view and detailed exploded views to aid in parts identification Please refer to these pages when ordering parts for your Laars Lite 2 pool heater Page 22 WATERPIK TECHNOLOGIES INC Key Model ORDER Key Model ORDER No Description No PART NO No Description No PART NO PILOT IGNITER SYSTEM VENT SYSTEM 1 Pilot Main Burner Assembly NAT All 0099100 59 Top Enclosure 125 400 R0343401 05 1 Pilot Burner Assemby LPG All R0099200 60 TopFiller Plate US Only 125 400 R0343701 05 2 Pilot Burner NAT All R0096700 61
27. eader Bolt Assembly Set of 8 All R0057000 14 Gas Valve LPG LG All R0096900 72 Bolt for Headers 2 1 2 All F0046100 14 Gas Valve NAT LD All R0317100 73 Washer for Headers All F0011100 14 Gas Valve LPG LD All R0319600 74 Nut for Headers All F0003100 15 Gas Orifice NAT 0 3 000 ft alt EA Note 1 All L0032200 75 Header Gasket Assembly Set of 18 All R0050800 15 Gas Orifice LPG 0 5 000 ft alt EA Note 2 All L0032900 76 Flange amp Gasket Assembly Set of 2 All R0055000 16 Anti Rotation Bracket All 10835900 77 Flange 2 All 10573500 17 Mounting Bracket Assembly LG All 10419200 78 Flange Gasket 2 All 0078000 18 Burner Main All L0052300 79 Flange Sleeve 2 All 0078200 19 Burner Manifold 125 L0052200 80 Flange Bolt All F0031700 19 Burner Manifold 175 L0006300 81 Flange Gasket 1 1 2 2 All 50078100 19 Burner Manifold 250 L0006400 82 Rubber Grommet for Drain Plug All R0316300 19 Burner Manifold 325 L0006500 83 Grommet Slitted Not Shown All 0071100 19 Burner Manifold 400 L0006600 84 Brass Connector Body All P0019701 85 Brass Drain Plug 1 4 All P0026800 ELECTRICAL SYSTEM 86 Brass Plug 3 4 All P0027000 20 Temperature Control Assembly LG All R0058200 87 By Pass Assembly w o spring Iron Cap All R0013100 21 Wire Harness All 0058000 87 By Pass Assembly with spring Bronze 125 400 10701401 05 22 Plate Assembly All 10457300 88 By Pass Valve Rod All 50079800 23 On Off Switch All R0099800 89 Brass Nut For Rod Al
28. ease back pressure enough for the heater to operate properly Make sure the pool filter is clean before making any pressure switch adjustment A dirty filter will restrict the water flow and the pressure switch cannot be adjusted properly To adjust the pressure switch 1 Set the control panel rotary switch LD or the control panel rocker switch LG to the OFF position see Figure 18 2 Set the Pool temperature control to the Max position 3 Turn filter pump on If a two speed pump is used make sure it is at high speed Page 14 WATERPIK TECHNOLOGIES INC TEMPERATURE CONTROL b Model LG Temperature Conirol Figure 18 Temperature controls RUBBER DUST t PLUG ALLEN WRENCH TURN CLOCKWISE UNTIL HEATER GOES OFF Figure 19 Pressure switch adjustment NOTE Heater should not be allowed to fire on low speed 4 Turn rotary switch LD or rocker switch LG to ON Heater should start 5 Pry out the top rubber dust plug on the top of the pressure switch 6 Use a 7 32 inch 5 55 mm Allen wrench to turn the adjustment screw very slowly clockwise until the heater goes off see Figure 19 7 Slowly turn the pressure switch adjustment screw counterclockwise one quarter turn The heater should come back on 8 Check the adjustment by turning the filter pump OFF The heater should shut off immediately I
29. eed to leave spa Physical inability to leave spa Fetal damage in pregnant women Unconsciousness resulting in danger of drown ing 3G Swimming Pool Energy Saving Tips Waterpik Laars offers the following recommen dations to help conserve fuel and minimize the cost of operating your pool heater without sacrificing com fort 1 American Red Cross recommends maxi mum water temperature of 78 F 25 C Use an accurate pool thermometer A difference of 4F 3C between 78 F and 82 F 25 c and 28 C will use as much as 4046 more gas 2 Carefully monitor the water temperature of your pool in the summertime You can reduce heater usage due to warmer air temperatures 3 Findthe proper setting on the pool heater tem perature control and use the TEMP LOK to discourage further adjustments 4 Setthe filter time clock to start the pump no earlier than 6 00 AM during the pool heating season This is the time when nightly heat loss balances 5 If the pool is only going to be used on weekends reduce the heater temperature control setting by 8 or 10 degrees during the week Reset it to the 78 F 25 C level a day or so before you plan to use the pool 6 During the winter or when on vacation for longer than a week shut down the heater by following the shutdown instructions found on the inside of the heater 7 possible shelter the pool from prevailing winds with well trimmed hedges or oth
30. eene en 2 1D Technical Assistance 2 SECTION 2 Installation Instructions 2A General Information 2 2B Field Assembly 2 2C Site 3 2C 1 Installation Information 3 2C 2 Outdoor Installation 4 2C 3 Flooring Typical Installation 4 2C 4 Indoor and Outdoor Shelter Installation 4 2D Combustion and Ventilation Air Supply 5 2E Gas Supply and Piping 5 2E 1 General Instructions 5 2E 2 Special Precautions for Propane Gas 6 2F Electrical Wiring 6 2F 1 General Information LD Only 6 2F 2 Auxiliary Time Clock Wiring 8 2F 3 Remote Operation Model LD Only 9 2G Water Flow System 9 2G 1 Flange Installation 9 2G 2 Reversible Water Connections 10 2G 3 Valve Installation 12 2G 4 Chlorinators Ozone Generators and Sanitizing Chemicals 12 2G4a Water Chemistry 13 2G 5 Pressure Relief
31. er land scaping cabanas or fencing 8 Always use a pool cover when practical Besides providing a valuable safety feature a pool cover will reduce heat loss conserve chemicals and reduce the load on filter systems Model LG amp LD Pool and Spa Heater Page 21 3H Periodic Inspection AWWARNING Improper installation or maintenance can cause nausea or asphyxiation from carbon monoxide in flue gases which could result in severe injury or death 3H 1 Owner Inspection Waterpik Laars designs and constructs the Laars Lite 2 heater to provide long performance life when installed and operated properly under normal condi tions The following basic guidelines are suggested for your inspection 1 Keep the top and surrounding area of the heater clear of all debris 2 Keep the heater area clean and free of all com bustible materials flammable liquids and vapors as well as sanitization chemicals 3 Do not use the heater if any part has been under water Immediately call a qualified professional technician to inspect the heater and replace any part of the control system which has been sub merged N utilisez pas cet appareil s il a t plong dans l eau m me partiellement Faites inspecter l appareil par un technicien qualifi et remplacez toute partie du syst me de contr le et toute commande qui ont t plong s dans l eau 4 If the heater is equipped with a pressure relief valve check for
32. f it does not restart the filter pump and repeat Steps 6 and 7 Check the adjustment again 9 Return the pool temperature control to the desired temperature 2G 7 Automatic Flow Control Valve The automatic flow control valve maintains the proper flow through the heater at rates up to approxi mately 125 Gallons Per Minute GPM 474 liters per minute LPM If the system filter flow rate is higher than approximately 125 GPM 474 LPM install a manual bypass valve see Figure 20 then perform a temperature rise test see Section 2G 8 and adjust the flow using the bypass valve until the proper tempera ture rise is obtained 2G 8 Temperature Rise A temperature rise test confirms proper water flow through the heater The temperature rise is the difference between the temperature of the pool or spa water before and after heating as measured in the header Perform the following temperature rise test when the installation is complete 1 Make sure the pool filter is clean 2 Set the rotary switch LD or rocker switch LG on the temperature control panel see Figure 18 to OFF Turn the filter pump off 4 Remove the drain plug located on the inlet outlet header of the heater and replace it with a Pete s plug see Figure 17 5 Inserta pocket thermometer see Figure 17 through the Pete s plug into the header 6 Turnthe filter pump on and wait 3 minutes The heater remains off This allows water from the pool to rea
33. g Page 6 WATERPIK TECHNOLOGIES INC Table 4 Gas Supply Pressure Requirements Supply Pressure Natural Gas Propane Gas Water Column in mm in mm Minimum 5 5 140 10 0 254 Maximum 10 0 254 14 0 356 5 Install a sediment trap drip leg ahead of the gas controls see Figure 5 Fit the trap with a threaded cap which can be removed for cleaning 6 Install a manual gas shutoff valve for service and safety Do not use a restrictive gas cock DO NOT USE FLEXIBLE GAS PIPING 7 Disconnect the heater and its individual shutoff valve from the gas supply system during pressure testing of the system at pressures higher than 1 2 pounds per square inch psi 3 45 kilopascals kPa If the test pressure is equal to or less than 1 2 psi 3 45 kPa close the manual shutoff valve on the heater during the piping pressure test Caution Permanent damage to the gas valve will occur if the following procedures are not followed 8 gas supply pressure is less than required check for undersized pipe between the meter and the heater a restrictive fitting or an undersized gas meter Gas supply pressures to the heater are listed in Table 4 NOTE The maximum inlet gas pressure must not exceed the specified value The minimum value listed is for the purpose of input adjustment Refer to Table 4 9 Before operating the heater test the complete gas su
34. ger Each baffle is held in place by two screws which mount to the top of the combustion chamber wall Remove the screws and the baffles before at tempting to lift the heat exchanger out of the heater see Figure 16 ACaution It may be necessary to have help lifting the heat exchanger out and replacing it HOLD DOWN CLAMP IN OUT HEADER BRACKET RETAINER BRACKET TEMPERATURE SENSING BULB O RING Figure 14 Temperature sensing bulb Figure 13 Flue collector hold down brackets U S MODELS ONLY LEFT RIGHT VESTIBULE VESTIBULE COVER COVER 4 Sk PLASTIC BUSHING FRONT Figure 15 Vestibule covers Page 12 WATERPIK TECHNOLOGIES INC Heat Exchanger End Baffles 7 HeatExchanger Combustion 2 Chamber Wall lt lt Figure 16 Heat exchanger and end baffles 13 14 15 16 17 18 19 Lift the heat exchanger assembly out of the heater Reinstall heat exchanger 180 degrees inlet outlet header left from it s original posi tion After replacing the heat exchanger into the heater the end baffles must be replaced Each one is held in place by two screws which mount to the top of the combustion chamber wall Reinstall the baffles on the front and rear of the heat exchanger before continuing with the Reversible Water Connections procedure Remove pressure swi
35. ghbor s phone Follow the gas supplier s instructions STOP Read the safety information above on this label Set the thermostat to lowest setting and turn appliance switch to OFF Turn off all electric power to the appliance This appliance is equipped with an ignition device which automatically lights the heater Do not try to light the burners by hand Remove the heater door Turn gas control knob clockwise gt to OFF Wait five 5 minutes to clear out any gas Then smell for gas including near the floor If you smell gas STOP Follow in the safety information above on this label If you don t smell gas go to next step Turn gas control knob counterclockwise 17 FOR YOUR SAFETY READ BEFORE OPERATING f you cannot reach your gas supplier call the fire department Use only your hand to push in or turn the gas control knob Never use tools If the knob will not push in or 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 appliance if any part has 9 10 11 12 been under water Immediately call a qualified service technician to inspect the appliance and to replace any part of the control system and any gas control which has been under water OPERATING INSTRUCTIONS EBENE Replace control access panel Turn on all electric
36. indows or gravity inlets If the heater is installed close to a structure protect it from rain water runoff with rain gutters on the roof or other measures Do not locate the heater near sprinkler systems that could spray water on it Avoid locations where wind deflection off nearby structures might cause downdraft conditions Where downdraft conditions exist locate the heater at least 3 feet 0 91 m from vertical surfaces e g nearby buildings and walls The addition of a vent cap may be necessary 2C 3 Flooring Typical Installation Do not install the heater directly on a combus tible wood or carpet floor without placing a noncom bustible platform between the floor and the heater In the United States the National Fuel Gas Code allows a heater to be placed on a combustible surface when there is a platform under the heater made of hollow masonry no less than 4 inches 102 millimeters mm Notes 1 Blocks must provide solid base and be braced so they cannot slip out of place 2 Air openings in blocks must be arranged to provide unrestricted opening through entire width or length of base Figure 4 Non Combustible Platform thick covered with sheet metal at least 24 gauge thick and extending beyond the full width and depth of the heater by at least 6 inches 76 2 mm in all directions The masonry must be laid with ends unsealed and joints matched to provide free circulation of air from side to side
37. ion instructions for the Laars Lite 2 Model LG and LD pool and spa heaters Read these installation and operation instructions completely before proceeding Page 1 with the installation Consult the Waterpik Laars factory or local factory representative with any questions regarding this equipment Experience has shown that most operating problems are caused by improper installation The Laars Lite 2 heater is design certified by International Approval Services formerly American Gas Association and Canadian Gas Association as complying with the latest edition of the Standard for 13 1 8 in 33 3 cm VENT CAP DRAFT HOOD 16 1 2 in 4 1 2 in lt mo cm 11 4 cm 3 3 8 in 8 57 cm 20 3 cm 28 1 2 in 3 1 2 in 72 4 cm 8 9 cm GAS CONNECTION FAR SIDE Venting Dimensions Model Heater U S Indoor or Firing Rate Hr Size Width Mp d d 1 000 s in cm in cm in cm in cm BTU kcal 125 15 38 5 12 7 9 1 8 23 16 1 4 41 3 125 31 5 175 18 45 7 6 15 2 9 3 4 24 24 1 8 61 3 175 44 1 250 22 1 2 57 2 7 17 8 10 26 25 1 4 64 1 250 63 325 26 3 4 67 9 8 20 3 10 5 8 27 26 1 2 67 3 325 81 9 400 31 3 4 80 6 9 22 9 13 1 4 34 27 1 2 69 9 400 101 Notes 1 In Canada derate BTU Hr input and output 10 percent for altitudes of 2 000 to 4 500 feet 609 to 1372 m above sea level
38. itudes 2 000 Ft above sea level call factory for orifice size 2 For altitudes 5 000 Ft above sea level call factory for orifice size Model LG amp LD Pool and Spa Heater Page 23 CANADA HEAT EXCHANGER SEE NEXT PAGE FOR DETAIL TEMPERATURE CONTROL SEE NEXT PAGE FOR DETAIL 51 102 5 NN xu 50 EIS N 106 N 52 103 101 BURNER TRAY LD SHOWN SEE NEXT PAGE FOR DETAIL Page 24 WATERPIK TECHNOLOGIES INC 7 imr 2 PA ol Ye 12 LG SHOWN Model LG amp LD Pool and Spa Heater Page 25 NOTES LAARS LITE 2 LIMITED WARRANTY Your Laars Lite 2 pool spa heater is backed by this double warranty to assure your complete satisfaction Controls copper heat exchanger tubes and combustion chamber panels are warranted against defects in materials and workmanship for two 2 years from date of purchase All other parts are warranted against defects in materials and workmanship for five 5 years from date of purchase The above warranty applies only if the installation inoperative parts or complete heater with Serial number and operating instructions applicable to the model Model number and purchase date transportation prepaid purchased are expressly and completely followed directly to address below attention Customer Service These instructions are furnished with the unit and for evaluation and
39. l F0048400 24 Temperature Control Label All H0105300 90 By Pass Valve Disc All R0011500 25 Temperature Control Assembly LD All 0011700 91 By Pass Valve Control Cap Iron All 10452200 26 Wire Harness Assembly All 10457800 91 By Pass Valve Control Cap Bronze All 10557400 27 Plate Assembly All 10594600 92 Control Cap Bolts 2 Required All F0041600 28 Knob Single Bar All R0099900 93 By Pass Valve Spring Purple 125 S0079900 29 Temperature Control Label All H0166500 93 By Pass Valve Spring White 175 S0061400 Key Nos 30 37 are for both R582 LG amp R117 LD 93 By Pass Valve Spring Red 250 S0061300 30 Temperature Sensor All 80011800 93 By Pass Valve Spring Blue 325 0061200 31 Protector Sleeve Bulb All 10444900 93 By Pass Valve Spring Black 400 50070100 32 Ring Temperature Control Bulb All E0116400 94 By Pass Valve Gasket All R0011400 33 Thermostat Knob Black All 0010700 95 Exch Tube Assy Incl set of 18 gaskets 125 400 R0018101 05 34 Stop Plate Temp Lok All 10583100 96 Exchanger Baffle 8 Required 125 400 10697401 05 35 Temperature Control Gasket All 0070000 97 Baffle Retainer All 0083900 36 Bezel All 50069800 98 Heat Exchanger Support Clip 2 Required All 10457000 d Seah 99 Flow Restrictors 2 Required Not Shown 125 50000300 39 Retainer Bracket Screw All F0009100 100 Heat Exchanger End Baffles 2 Required 125 400 R0332301 05 40 Pressure Switch amp Siphon Loop Assembly 2 PSI R0097600 4
40. n the gap closures to the jacket and put them aside Remove gap closures 6 Remove the screws securing the two flue collec tor hold down clamps and remove the clamps see Figure 13 Remove flue collector 7 Remove the three rubber jacket plug grommets and drain plugs see Figure 12 One is located under the water connections on the right side The other two are on the left side toward the front of the heater 8 Tag and disconnect the white wire on the pressure switch PS and the white wire on the Fireman s switch terminal see Figure 6 or 7 which leads to the high limit switch 9 Remove plastic tie wraps and pull the white wires out of the front compartment through the vesti bule cover and coil them on the heat exchanger 10 Unscrew the brass compression fitting securing the pressure switch to the inlet outlet header Remove tube from header and gently bend it out of the way 11 Loosen the screw securing the temperature sensing bulb retainer bracket Slide the retainer bracket off the bulb flange and remove the bulb from the header see Figure 14 Pull pressure switch tube through the hole in the vestibule cover and into the vesti bule controls compartment then pull thermostat bulb assembly through same hole see Figure 15 12 When removing the heat exchanger from the heater the end baffles of the heat exchanger must be removed There are two baffles covering part of the front and rear tubes of the heat exchan
41. on in an outdoor shelter in Canada when equipped with a drafthood An outdoor shelter is an enclosure not normally occupied which does not communicate directly with occupied areas Check the rating plate on the heater or the Parts List Sec 4 of this manual for the correct Waterpik Laars drafthood or vent cap part number See instruc tions supplied with the drafthood or vent cap for installation and attachment When the drafthood is used locate the heater so as to be in the same atmo spheric pressure zone as the combustion air inlet to the heater Model LG amp LD Pool and Spa Heater Page 3 10 ft VENT TERMINATED 3 05 dai ana WITHIN 10 3 05 m STORM COLCAR DUCTED OPENINGS _ ROOF JACK 1 4 in 6 35 mm MINIMUM PITCH PER FOOT OF HORIZONTAL PIPE OUTLET AIR DUCT DRAFTHOOD ADEQUATE ADEQUATE AIR SUPPLY AIR SUPPLY TO ROOM TOP TO ROOM TOP AND BOTTOM AND BOTTOM REFER TO TABLE 1 INLET AIR DUCT PENES Notes 1 An Underwriters Laboratories listed vent cap is required to prevent downdraft and allow the heater to function properly and safely 2 Use approved roof jack Figure 2 Indoor Installation Venting USA or Outdoor Shelter Canada Table 1 Air Openings to Outside Required Net Free Open Area for Combustion Air Openings Duct from outside Direct from outside Model in in cm 125 32 64 413 175 44 88 568 250
42. oung children 2 The drinking of alcoholic beverages before or during spa or hot tub use can cause drowsiness which could lead to unconsciousness and subse quently result in drowning 3 Pregnant women take note Soaking in water above 102 F 38 5 C can cause fetal damage during the first three months of pregnancy which could result in the birth of a brain damaged or deformed child If pregnant women are going to use a spa or hot tub they should make sure the water temperature is below 100 F 38 C maxi mum 4 The water temperature should always be checked with an accurate thermometer before entering a spa or hot tub Temperature controls may vary by as much as 4F 2C 5 Persons with a medical history of heart disease diabetes circulatory or blood pressure problems should consult their physician before using a hot tub or spa 6 Personstaking any medication which induces drowsiness e g tranquilizers antihistamines or anticoagulants should not use spas or hot tubs 7 Prolonged immersion in hot water can induce hyperthermia Hyperthermia occurs when the internal body temperature reaches a level several degrees above the normal body temperature of 98 6 F 37 C Symptoms include dizziness fainting drowsiness lethargy and an increase in the internal body temperature The effects of hyperthermia include Lack of awareness of impending hazard Failure to perceive heat Failure to recognize n
43. power to appliance Set thermostat to desired setting and turn appliance switch from OFF to either POOL or SPA If the appliance will not operate check that the filter pump is on the filter is clean and water is flowing to the pool Otherwise follow the instructions To Turn Off Gas To Appliance and call your service technician or gas supplier TO BURNERS GAS CONTROL IN OFF POSITION es TO TURN OFF GAS TO APPLIANCE 1 Setthe thermostat to lowest setting and turn appliance switch to OFF 2 Turn off all electric power to the appliance if service is to be performed 3 Turn gas control knob clockwise to OFF 4 Replace control access panel Page 18 WATERPIK TECHNOLOGIES INC 3B 2 Model LG Standing Pilot FOR YOUR SAFETY READ BEFORE OPERATING WARNING If you do not follow these instructions exactly fire or explosion may result causing property damage personal injury or loss of life This appliance has a pilot which must be If you cannot reach your gas supplier call lighted by a push button sparker When the fire department lighting the pilot follow these instructions C Use only your hand to push in or turn the exactly gas control knob Never use tools If the BEFORE LIGHTING smell all around the knob will not push in or turn by hand don t appliance area for gas Be sure to smell next try to repair it Call a qualified service techni to the
44. pply system and all connections for leaks using a soap solution Do not use an open flame ACaution Some leak test solutions including soap and water may cause corrosion or stress cracking Rinse the piping with water after testing 2E 2 Special Precautions for Propane Gas Liquefied petroleum LP gas is heavier than air Therefore do not install pool heaters using LP gas in pits or locations where gas might collect Locate heaters a safe distance from LP gas storage and filling equipment Consult local codes and fire protection authorities about specific installation restrictions 2F Electrical Wiring ACaution Label all wires prior to disconnection when servicing controls Wiring errors can cause improper and dangerous operation Verify proper operation after servicing Attention Au moment de l entretien des commandes tiquetez tous les fils avant de les d brancher Des erreurs de c blage peuvent entrainer un fonctionnement inad quat et dangereux 2F 1 General Information LD Only Wiring connections must be made exactly as shown in the wiring diagram found on the inside of the heater see Figures 6 and 7 for typical examples The heater must include a definite means of grounding There is a bonding lug on the right side of the heater where a bond wire must be attached The heater comes factory wired intended for use with 240 Volt 60 Hz AC field electrical supply To use 120 Volt 6
45. rature rise is above the maximum d Replace the drain plug there is not enough water flowing through the heater Check for clogging in the water filter or restriction in the water pipes a Turn heater off b Wait 3 minutes turn filter pump off Page 16 WATERPIK TECHNOLOGIES INC 9 Once the temperature is within the correct range safety wire the handle of the manual bypass valve in place and tag the valve to prevent change in the water flow SECTION 3 Operating Instructions 3A General Information With any new pool or spa installation operate the filter pump with the heater off long enough to com pletely clean the water This will remove any installation residue from the water Clean the filter at the end of this operation before starting the heater When raising the temperature of a cold pool remove all time clock settings This lets the filter system and heater operate continuously until the water reaches the temperature setting on the temperature control When that happens AAWARNING Vent pipes drafthoods and heater tops get hot These surfaces can cause serious burns Do not touch these surfaces while the heater is in operation Adding a vent cap reduces the temperature on the top AAWARNING For your safety when starting the heater keep your head and face well away from the lower firebox opening to prevent any risk of personal injury 3B Lighting and Shutdown Procedures
46. rol knob to OFF and call location your service technician or gas supplier Turn knob on gas valve Turn gas control knob counterclockwise 44 counterclockwise to to PILOT then push control L After replacing control compartment access knob all the way and hold down panel set thermostat to desired setting and turn appliance ON OFF switch to ON Valve GAS CONTROL IN A O has built in delay before coming on iii M If the appliance will not operate check that A the filter pump is on that the filter is clean ANC RY and water is flowing to the pool Otherwise follow the instructions To Turn Off Gas To Appliance and call your service technician or gas supplier 6 SEI LLG Gas Valve es TO TURN OFF GAS TO APPLIANCE 1 Set the thermostat to lowest setting and turn 2 Turn gas control knob clockwise P until it appliance ON OFF switch to OFF stops at PILOT Then press down slightly on knob while turning clockwise OFF Do not force Model LG amp LD Pool and Spa Heater Page 19 3D Seasonal Care Caution Do not operate this heater outdoors at temperatures below 20 degrees Fahrenheit F 7 degrees Celsius C 3D 1 Spring and Fall Operation During periods when the pool is only going to be used occasionally turn the temperature
47. t the factory and covers a range from approximately 70 F to 104 F 21 C to 40 C Use an accurate pool thermometer to determine the best water temperature for your uses The Laars Lite 2 model LD has dual temperature controls which allows two different temperature settings selected by the rotary switch in the middle of the panel One control can be set for normal use and the other for standby or one can be set for pool and the other for a spa Placing the rotary switch in the middle turns off the heater see Figure 18 The model LG has only a single control and is set similarly to the LD above IMPORTANT The temperature controls cannot be calibrated in the field If the control is faulty shut down the heater and have a qualified service technician replace the control DO NOT use the thermostat switch to completely shut down the heater Model LG amp LD Pool and Spa Heater 3B 1 Model LD Direct Ignition A This appliance does not have a pilot light It is equipped with an ignition device which automatically lights the heater Do NOT try to light the burners by hand BEFORE OPERATING smell all around the appliance area for gas Be sure to smell next to the floor because some gas is heavier than air and will settle on 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 nei
48. tall an in line check valve between the heater and the feeder a minimum of 18 is required between the heater and the check valve Never deposit chemicals directly in the pool skimmer 2G 4a Water Chemistry Proper chemical balances are necessary for sanitary bathing conditions as well as ensuring your heater s long life Be sure to keep your chemical levels within the values indicated in Table 7 Waterpik Laars does not warrant heat exchangers damaged by corrosive chemical levels or excess dissolved solids in pool or spa water For spas it is also necessary to perform water changes in addition to chemical treatment It is recom mended to change the spa water every 60 days for light usage and every 30 days if usage is heavy Table 7 Mineral Concentration Levels Test Recommended Level Free chlorine 1 0 to 3 0 ppm Bromine 3 0 to 5 0 ppm pH 7 2 to 7 8 Total alkalinity TA Calcium hardness CH 80 to 120 ppm 200 to 400 ppm 0 5 to 0 5 Less than 2000 ppm 30 to 150 ppm 0 ppm Langelier saturation index LSI Total dissolved solids TDS Cyanuric acid Copper 2G 5 Pressure Relief Valve A pressure relief valve is not furnished with the Laars Lite 2 heater However it is recommended that a pressure relief valve be installed and may even be required by local codes To install a pressure relief valve remove the 3 4 inch 19 mm brass plug located on the top of the inlet outlet header see Fig
49. tch retainer plastic cable clamp from the inner panel allow pressure switch to float On U S models reroute pressure switch tube and thermostat bulb assembly through hole in left side of vestibule cover in reverse order Canadian models have no cover on the left side of the vestibule Relocate the pressure switch tube and temperature sensor through the open side of the vestibule Reinstall the temperature sensing bulb in the header and fasten it with the retainer bracket and screw Reinstall the compression fitting at end of pres sure switch tube into inlet outlet header and tighten the fitting Route the white wiring from the high limit switches beside the heat exchanger and down to the original location following the pressure switch tubing Secure white wires to the pressure switch tube with plastic wire ties 20 Connect the white wire labeled PS to the pressure switch and the other white wire to its original location on the Fireman s switch 21 Reinstall the drain plugs and tighten securely Replace jacket plug grommets 22 Install the flue collector assembly Be sure the front and rear panels of the flue collector are installed into the grooves on the front and rear combustion chamber heat shield panels Be sure the sheet metal panels are not pinching any wires 23 Attach the flue collector hold down clamps to the clips located under the two center header bolts 24 Replace the gap closures and tighten the scre
50. ure 17 Install the pressure relief valve in the threaded hole from which the plug was removed The pressure rating of the valve should be at or below the lowest working pressure of any compo nent in the filter system Any pressure relief valve installed must comply with provisions of the Standard described in ANSI Z21 22 for the United States or CAN 1 4 6 in Canada PRESSURE RELIEF VALVE THERMOMETER 20 TO 130 F Figure 17 Thermometer and pressure relief valve 2G 6 Adjusting the Pressure Switch ACaution The pressure switch should be adjusted to turn the heater off when the pump is off Setting the switch to close at too low of a flow can damage the appliance Adjust the switch to turn the heater off not on The pressure switch is preset at the factory for activation at 2 psi 14 kPa Adjust the pressure switch only if any part of the filter system piping is 3 feet 0 91 m or more above the top of the heater jacket Do not adjust the pressure switch if the heater is installed more than 15 feet 4 57 m below or 6 feet 1 83 m above the pool surface Consult your local Waterpik Laars representative for recommendations On some installations the piping from the heater to the pool is very short The back pressure could be too low to trigger the pressure switch If this happens it may be necessary to install a directional fitting or elbows where the return line enters the pool This will incr
51. warranty consideration are also available by writing to the Waterpik Laars factory The liability of Waterpik Laars shall not This warranty gives you specific legal rights You may exceed the repair or replacement of defective parts also have other rights which vary from state to state by factory authorized technicians and shall not and by province Some states do notallow the exclusion include transportation to or from factory any labor or limitation of incidental or consequential damages so costs and consequential or incidental damages Ship the above limitation or exclusion may not apply to you waterpik Technologies Inc 6000 Condor Dr Moorpark CA 93021 USA 805 529 2000 21 Pimentel Court Novato CA 94949 USA 415 382 8220 480 Service Road West Oakville Ontario Canada L6K 2H4 905 844 8233 aN Laars QRMANCE waterpik 508002 6000 Condor Drive Moorpark CA USA 93021 415 382 8220 FAX 415 382 8091 21 Pimentel Court Novato CA USA 94949 415 382 8220 FAX 415 382 8091 480 S Service Road West Oakville Ontario Canada LOK 2H4 905 844 8233 FAX 905 844 2635 Printed on Recycled Paper du Litho in U S A Waterpik Laars 9906 H0235900
52. ws securely 25 Double check to make sure the wiring is not pinched against sharp edges or resting on the flue collector assembly 26 Reinstall rainshield assembly 27 Replace the top assembly Make sure the tabs are outside the heater jacket Fasten the top assembly with the hex head screws 28 Install plastic tie wraps on wiring in the vestibule controls compartment 29 Install heater door 30 Reinstall the vent cap or drafthood if one was removed 2G 3 Check Valve Installation Install a check valve if there is any chance of back siphoning when the pump stops Do not install any other valve in the piping between the heater outlet and the pool unless it is being used as a diverter valve 2G 4 Chlorinators Ozone Generators and Sanitizing Chemicals The Waterpik Laars Lite 2 heater is manufac tured with materials that are not compatible with high concentrations of ozone chlorine bromine or other sanitizing chemicals Heater damage caused by exces sive chemicals or improper ozonization is not covered by the Waterpik Laars warranty Be sure to adhere to the following When ozone is injected upstream of the heater install an offgas mixing chamber or an ozone bypass system between the heater and the ozone injector to prevent ozone and air from entering the heater Model LG amp LD Pool and Spa Heater Page 13 When chemical feeders are used plumb the feeder downstream of the heater and ins
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