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Pentair MiniMax CH User's Manual

1. Readings are taken with the heater fired Any adjustments made with heater off will give incorrect readings Table 10 P N 472128 Installation contd VENTILATION OUTDOOR INSTALLATION ONLY For outdoor installation with built in vent top the heater must be placed in a suitable area on a level noncombustible surface Do not install the heater under an overhang with clearances less than 3 feet from the top of the heater The area under an overhang must be open on three sides IMPORTANT In an outdoor installation it is important to protect your heater from water damage Ensure water is diverted from overhanging eves with a proper gutter drainage system The heater must be set on a level foundation for proper rain drainage Maintain minimum clearances as indicated below Install a minimum of 4 feet below and 4 feet horizontally from any opening to a building The heater should not be installed closer than 6 inches to any fences walls or shrubs at any side or back or any combustible material nor closer than 18 inches at the plumbing side minimum clearance of 24 inches must be maintained at the front of the heater Figure 12 IMPORTANT When locating the heater consider that high winds can roll over or deflect off adjacent buildings and walls Normally placing the heater at least three feet from any wall will minimize downdraft Unusually high prevailing wind conditions and downd
2. F WILL CAUSE HARMFUL CONDENSATION AND WILL DAMAGE THE HEATER AND WILL VOID THE WARRANTY If the pool won t be used for a month or more turn the heater off at the main gas valve For areas where there is no danger of water freezing water should circulate through the heater all year long even though you are not heating your swimming pool The MiniMax CH should not be operated out doors at temperatures below 0 F for propane and 20 F for natural gas Where freezing is possible it is necessary to drain the water from the heater This may be done by opening the drain valve located at the inlet outlet header see Figure 9 allowing all water to drain out of the heater It would be a good practice to use compressed air to blow the water out of the heat exchanger See additional notes under Important Notices in Introduction on page 3 Rev 1 17 03 P N 472128 Maintenance contd CHEMICAL BALANCE POOL AND SPA WATER Your Pentair Pool Products pool heater was designed specifically for your spa or pool and will give you many years of trouble free service provided you keep your water chemistry in proper condition Three major items that can cause problems with your pool heater are improper pH disinfectant residual and total alkalinity These items if not kept properly balanced can shorten the life of the heater and cause permanent damage A CAUTION Heat exchanger damage resulting from chemical imbalance is not covered b
3. AW LL AAWA SVD NYS WWY3SHL SIHOLIMS WAWYSHL 53000 1V201 HO 3009 1VNOLLVN JHL OL LSNW OL ONIHIM ONLLOSNNOOH3INI e 9 921 A009 SONVO 81 SHIM TONS VSO ONIHIM ISNA TVINHSHL ONLLVH SUNLVHAdWAL 9 901 A009 JONVO 81 SHIM 41 VSO IN VLIW L33HS AlddN LSNW YSTIVISNI 0301438 38 1SNIN ONIHIM AHOLOV TVNIOIHO ll SISSY ONLLLOO LNIVd all OSL XeINIUI N SHIM ALAAVS AlddNS ALVNINYAL i eiiis Rev 1 17 03 A 8 P N 472128 Installation contd REMOTE SWITCH DUAL THERM IID ONLY JUMPER REQUIRED IF NO 2 WIRE REMOTE SWITCH 3 Wire Remote 24VAC PRESS HILMT TFUSE VALVE IGNITION MOD n n RETURN EXT SWITCH THERMOSTAT CIRCUIT BOARD SPA POOL TPROBE REMOTE POOL OFF SPA THERMOSTAT SELECT SWITCH Os FRONT PANEL Q 2 POOL OFF SPA THERMOSTAT SELECT SWITCH Figure 7 2 Wire Remote JUMPER REQUIRED IF NO 2 WIRE REMOTE SWITCH 24VAC PRESS HILMT TFUSE VALVE IGNITION MOD C A _____ A THERMOSTAT CIRCUIT BOARD EXT SWITCH SPA POOL
4. EA 5 EA 6 EA 7 EA 471750 471750 471587 471587 471441 10 Gas valve natural Millivolt Gas valve propane Millivolt Pilot tube Millivolt Burner tray assy natural complete Millivolt 12 Burner tray assy propane complete Millivolt 14 4a 15 16 17 18 19 20 1 22 23 24 25 26 27 Burner Burner with pilot bracket not shown Pressure switch Combustion chamber assy complete Presslite igniter assy Potentiometer Flow valve assy Hi Limit thermostat 115 Adaptor bulkhead 2 in Adaptor bulkhead ring 471750 471750 471750 471587 471587 471587 471694 472133 Main manifold assy Main header assy Main manifold bottom Cap main manifold bottom Hi Limit thermostat 150 Heat exchanger without heads 8 ea 8 ea 8 ea 8 ea 16 ea 16 ea 070277 075559 070276 075560 070277 070278 P N 472128 Rev 1 17 03 Heat exchanger with heads UJ 00 2 14 05 6 18 19 20 22 23 2 25 26 ES 30 30 Baffle hold down 2 baffles on 400 21 MiniMax CH Parts List contd s 32 33 34 35 36 37 70715 070715 070715 070715 070715 070715 vone oone 01075 3 4 ea 5 6 7 NorP NorP NorP NorP 073727 073727 073727 073727 073727 073727 073728 073728 073728 073
5. If it goes out repeat steps 4 through 7 2 f knob does not pop up when released stop and gt immediately call your service technician or gas Mes supplier Figure 3 gu Ifthe pilot will not stay lit Robertshaw Millivolt Gas Valve Honeywell Millivolt Gas Valve after several tries turn the Figure 1 Figure 2 gas control knob to OFF E HERD and call your service Gas control knobs shown in OFF position technician or gas supplier NOTE 8 Turn knob on gas control Knob cannot be turned from Pilot to unless counterclockwise Y to knob is pushed in slightly DO NOT FORCE ON 5 Wait five 5 minutes to clear out any gas If you then 9 Replace the control access smell gas STOP Follow B in the safety informa door tion above If you don t smell gas go to the next step 6 Push in gas control knob slightly and turn counter ad a Bu Figure4 pact clockwise to Pilot E _ TURN OFF GAS BEEN 1 Set the thermostat to lowest setting 4 Push in gas control knob slightly and turn clockwise 2 Turn off all electric power to the heater if service is to OFF Do not force to be performed 5 Replace control access door 3 Remove control access door Rev 1 17 03 P N 472128 Operation contd 6 OPERATING CONTROLS Dual Temperature Control System For convenience and economy all MiniMax CH heaters are equipped with two thermostats
6. Inc 1620 Hawkins Ave Sanford NC 27330 919 774 4151 10951 W Los Angeles Ave Moorpark CA 93021 805 523 2400 P N 472128 Rev 1 17 03
7. YOU WILL DRILL INTO THE VALVE ASSEMBLY Pressure Relief Valve In some installations a pressure relief valve 4 PRV is required on the MiniMax CH heater To install a PRV carefully drill a 3 8 in hole in center of 3 4 in NPT port on main header being careful to drill only thru wall at bottom of 3 4 in NPT port and no deeper now thread in the 3 4 NPT PRV Sold separately FOR PRV INSTALLATION DRILL THRU THE NPT PORT REMOVE FLOW VALVE 2 BEFORE DRILLING THE NPT PORT 5 Settime clock to start circulation system no earlier than daybreak The swimming pool loses less heat at this time 6 For pools that are only used on the weekends it is not necessary to leave the thermostat set at 78 F Lower the temperature to a range that can be achieved easily in one day Generally this would be 10 to 15 F if pool heater 15 sized properly 7 During the winter or while on vacation turn the heater off 8 Set up a regular program of preventative maintenance for the heater each new swimming season Check heat exchanger controls burners operation etc If the pool is being used occasionally do not turn the heater completely off Set the thermostat down to 65 F This will keep the pool and the surrounding ground warm enough to bring the pool up to a comfortable swimming temperature in a shorter period of time WINTER OPERATION OPERATING THIS HEATER CONTINUOUSLY AT WATER TEMPERATURE BELOW 68
8. heater Do not operate the heater unless water in the pool spa is at the proper level PLUMBING VALVES When any equipment is located below the surface of the pool or spa valves should be placed in the circulation piping system to isolate the equipment from the pool or spa Check valves are recommended to prevent back siphon ACAUTION Exercise care when installing chemical feeders so as to not allow back siphoning of chemical into the heater filters or pump When chemical feeders are installed in the circulation of the piping system make sure the feeder outlet line is down stream of the heater and is equipped with a positive seal non corrosive Check Valve P N R172288 between the feeder and heater P N 472128 MANUAL BY PASS Where the flow rate exceeds the maximum 120 GPM a manual bypass should be installed and adjusted After adjustments are made the valve handle should be removed to avoid tampering Do not exceed the maximum recommended flow rate for the connecting piping Table 6 BELOW POOL INSTALLATION If the heater is below water level the pressure switch should be adjusted This adjustment must be done by a qualified service technician See following CAUTION ACAUTION BELOW OR ABOVE POOL INSTALLATION The water pressure switch is set in the factory at 17 PSI This setting is for a heater installed at pool level or within 3 above or 3 below If the heater is to be inst
9. smell all around the heater knob Never use tools If the knob will not push in or area for gas Be sure to smell next to the floor turn by hand don t try to repair it Call a qualified because some gas is heavier than air and will settle service technician Forced or attempted repair may on the floor result in a fire or explosion WHAT TO DO IF YOU SMELL GAS D Do not use this heater if any part has been under water Immediately call a qualified service technician to inspect the heater and to replace any part of the control system and any gas control which has been under water Do not try to light any heater 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 LIGHTING INSTRUCTIONS C 1 STOP Read the safety information above 7 Push the control knob all the way and hold in 2 Setthe thermostat to the lowest setting Immediately light the pilot with Presslite matchless 3 Turn off electric power to the heater ignition system by pressing the red igniter button 4 Push in gas control knob slightly and turn clock located at the panel next to the gas valve Continue to hold the control knob in for about one 1 minute after the pilot is lit Release knob and it will pop back up Pilot should remain lit
10. thermostat thermister leads from the control board 5 Exchange the in out header with the return header Replace the heat exchanger tube seals with new seals provided in the Quick Flange Accessory Bag 6 Install the temperature sensing bulb by passing the wires through the hole provided on the left side of the brace panel Route wires through the support bracket 7 Reconnect all the high limit wires Reconnect the pressure switch wiring Route the wires through the same hole as the thermostat sensor wires and reconnect thermister to the board 8 Reinstall the inspection plates Rev 1 17 03 11 INSULATING THE HIGH LIMITS When Reversing Heads on the MiniMax CH Heater On the MiniMax CH heater there is insulation installed by the factory on the return head side of the heaters This insulation is there so that if the heads are reversed in the field during initial installation of the heater the reflected heat from the flue collector will be insulated from the high limits Return head in position before removal This view shows the insulation installed by the factory Return head removed and new tube seals installed Now ready to accept the installation of the main head Lift the installation to allow the main head to be installed When head is placed into position release the insulation it will now shield the high limits from the heat produced by the flue collector P N 472128 Installation cont
11. 0123 4 5 678 9 10 Strongly Alkaline 11 12 13 14 Muriatic Acid has a pH of about 0 Pure water is 7 neutral Weak Lye solution have a pH of 13 14 P N 472128 8 RULE 7 4 to 7 6 1s a desirable pH range It is essential to maintain correct pH see Table 2 If pH becomes too high over alkaline it has these effects 1 Greatly lowers the ability of chlorine to destroy bacteria and algae 2 Water becomes cloudy 3 There is more danger of scale formation on the plaster or in the heat exchanger 4 Filter elements may become blocked If pH is too low over acid the following conditions may occur 1 Excessive eye burn or skin irritation 2 Etching of the plaster 3 Corrosion of metal fixtures in the filtration and recirculation system which may create brown blue green or sometimes almost black stains on the plaster 4 Corrosion of copper in the heater which may cause leaks 5 Ifyou have a sand and gravel filter the alum used as a filter aid may dissolve and pass through the filter CAUTION Do not test for pH when the chlorine residual is 3 0 ppm or higher or bromine residual is 6 0 ppm or higher See your local pool supply store for help in properly balancing your water chemistry RULE Chemicals that are acid lower Chemicals that are alkaline raise pH Table 2 pH Control Chart 6 8 70 72 74 76 78 8 0 82 84 Add Soda Ash or Marginal Ideal Marginal Add Acid Sodium Bicarbona
12. 12 and 13 Air supply requirements below apply to all MiniMax heaters All opening sizes are minimum and unobstructed Air From Inside Air for Combustion Air Ventilation Sq In Sq In o o Modet 250 I o o Table 12 Air From outsiae rien Sq In Sq In o Table 13 INSTALLATION ON FLOORS CONSTRUCTED OF COMBUSTIBLE MATERIALS The heater may be placed on a combustible floor using either of the two methods listed below a Use Listed Factory Non combustible Base Kit for use on combustible floors Model Non Combustible Base Kit Table 14 P N 472128 16 b Construct a non combustible base from masonry blocks as illustrated see Figure 17 BASE FOR USE ON COMBUSTIBLE FLOORS SHEET SS METAL Q HOLLOW MASONARY BLOCKS NOT LESS THAN 4 THICK LAID WITH ENDS UNSEALED AND JOINTS BLOCKS MATCHED FOR AIR CIRCULATION COVER BLOCKS WITH 24 GA MIN GALVANIZED SHEET METAL Figure 17 ACAUTION Chemicals should not be stored near the heater installation Combustion air can be contaminated by corrosive chemical fumes which can void the warranty STACK TYPE INDOOR DRAFT HOOD KIT The proper draft hood and adapter must be installed on the heater as shown below Model Draft Hood Product Vent Dia Table 15 INDOOR DRAFT HOOD INSTALLATION 1 Take out the louvered out
13. 728 073728 073728 Orifice main burner natural Orifice main burner propane Pilot natural Millivolt Pilot propane Millivolt Pilot generator Thermal cutoff fusible link Power element flow valve Rev 1 17 03 P N 472128 22 NOTES P N 472128 Rev 1 17 03 MiniMaxe CH 150 Model POOL amp SPA HEATERS OPERATION amp INSTALLATION MANUAL APPENDIX FOR YOUR SAFETY READ BEFORE OPERATING If you do not follow these instructions exactly a fire or explosion may result causing property damage personal injury or loss of life For additional free copies of this manual call 800 831 7133 Pentair Pool Products Because reliability matters most Warning U S Patent Numbers 6 295 980 5 318 007 5 228 618 5 201 307 4 595 825 Warning Improper installation adjustment alteration service or maintenance can cause property damage personal injury or death Installation and service must be performed by a qualified installer service agency or the gas supplier WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance For Your Do not touch any electrical switch do not use any phone in your building Safety 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 Pentair Pool Products Inc 1620 Hawkins Ave Sanford NC 27330 919 774 4151 10951 W Lo
14. 9 471420 471694 472131 472169 8 ea Pressure switch Combustion chamber assy complete Transformer w circuit breaker dual voltage Thermostat knob Flow valve assy Main manifold assy Main header assy Main manifold bottom Cap main manifold bottom Hi Limit thermostat 150 Heat exchanger without heads Heat exchanger with heads 29 070277 073810 00 30 hold down 2 on 400 Rev 1 17 03 11 P N 472128 MiniMax CH Parts List 150 IID Model contd ITEM DESCRIPTION 1 QTY Flue collector 3m 3 ea Nor P 073727 073728 Outdoor top assy 3 Lightback shield Propane Gas units only Module Natural Gas Module Propane Gas rana fees sr raza complete m Co wo wj Plastic mounting bracket 2 Bolt 5 16 18 x 3 4 2 Orifice main burner natural Orifice main burner propane Bracket adapter Q379 pilot MV P N 472128 A 12 Rev 1 17 03 NOTES Rev 1 17 03 13 P N 472128 Pentair Pool Products Because reliability matters most MiniMax CH Heaters Limited Warranty Your MiniMax CH pool heater is another quality product from Pentair Pool Products Inc and is backed by the following warranty 1 The following parts are warranted for 5 years from date of purchase The MiniMax CH cabinet and combustion chamber the main bur
15. RATING THIS HEATER CONTINUOUSLY AT WATER TEMPERATURE BELOW 68 F WILL CAUSE HARMFUL CONDENSATION AND WILL DAMAGE THE HEATER AND WILL VOID THE WARRANTY Do not use the heater to protect pools or spas from freezing if the final maintenance temperature desired is below 68 F as this will cause condensation related problems CODE REQUIREMENTS The installation must conform with local codes or in the absence of local codes with the latest National Fuel Gas Code ANSI Z223 1 and the latest edition of the National Electrical Code NFPA 70 Installation in Canada to be made in accordance with the latest CAN CGA B149 1 or 2 and CSA 22 1 Canadian Electric Code part 1 member CERTIFIED Rev 1 17 03 P N 472128 Operation contd This instruction manual provides operating instructions installation and service information for the MiniMax CH high performance heater The information in this manual applies to the MiniMax CH 150 200 250 300 350 and 400 natural gas and propane LP models It is very important that the owner installer read and understand the section covering installation instructions and recognize the local and state codes before installing the MiniMax CH History and experience has shown that most heater damage is caused by improper installation practices WARRANTY INFORMATION The MiniMax CH pool heater is sold with a limited factory warranty Specific details are described on the back cove
16. SS PWR ro DO Tee O mr Oi reuse Y 30 POWER Q CLOSE IF sec THERMOSTAT CIRCUIT BOARD HEATER FIRING NORMAL OPERATION FRONT PANEL LEDS IGNITION MODULE INCOMING TRANSFORMER CIRCUIT LINE VOLTAGE BREAKER REMOTE Hop RELAY Pwr yo e o POWER Q service l THERMOSTAT CIRCUIT BOARD THERMOSTAT CALLING FOR HEAT BLOWN THERMAL FUSE BLOCKS FIRING dt NOTE SERVICE LED LIT FLAGS PROBLEM TFUSE LED OFF SHOWS PROBLEM IS IN THERMAL FUSE CIRCUIT P N 472128 A 6 Rev 1 17 03 Installation REGULATED MANIFOLD PRESSURE TEST 1 Attach the manometer to the heater jacket 2 Shut off the main gas valve 3 Remove 1 8 in NPT plug on the outlet side of the valve and screw in the fitting from the manometer kit 4 Connect the manometer hose to the fitting 5 Fire the heater 6 The manometer must read 4 in WC for natural gas 11 in WC for propane gas while the heater is operating 7 Foradjustment remove the Regulator Adjustment Cap and using a screwdriver turn the screw clockwise to increase counterclockwise to decrease gas pressure ELECTRICAL ELECTRONIC UNITS Electrical Rating 60 Hz 115 230 50 60 Hz 208 V A C or 240 V A C NOTE If any of the original wiring supplied with this heater must be replaced installer must supply No 18 AWG 105 C U L approved AWM low energy stranded copper wire or it s equivalent In C
17. TPROBE Figure 8 FRONT PANEL POOL OFF SPA THERMOSTAT SELECT SWITCH NOTE When connecting a remote control to the MiniMax CH you must install the low voltage thermostat wires in separate conduit from ANY line voltage wires Failure to follow these instructions will cause the thermostat relay to react erratically Rev 1 17 03 A 9 P N 472128 MINIMAX CH HEATER 150 IID MODEL INNER TOP Model No 470024 P N 472128 A 10 Rev 1 17 03 MiniMax CH Parts List 150 IID Model ITEM DESCRIPTION DESCRPTON Washer 3 8 ID 1 OD 7 Switch rocker single pole amp double throw 460227 460237 070994 471991 072184 070951 470179 470186 472151 472191 075468 070256 073998 073999 075191 073752 Burner tray assy Propane complete IID 073906 E 2 EA Burner NN 070230 Control panel assy complete Natural Control panel assy complete Propane Door Millivolt or IID anifold burner Gas valve Natural IID Gas valve Propane IID 12 Pilot tube IID Burner tray assy Natural complete IID 14 4a 15 16 17 18 19 20 Hi Limit thermostat 115 21 bulkhead 2 in 22 Adaptor bulkhead ring 23 24 25 26 27 1 ITEM MM E HOM MEM EM EN KM EIN EN MEM HEM 22 EN EN 5 MEM E Burner with pilot bracket not shown 470550 471672 073858 471360 470184 471750 471587 471441 274440 471993 471992 47141
18. alled more that 3 above or 3 below the water pressure switch must be adjusted by a qualified service technician FLOW SWITCH If the heater is installed more the 6 above the pool or more than 10 below the pool level you will be beyond the limits of the pressure switch and a flow switch must be installed Locate and install the flow switch externally on the outlet piping from the heater as close as possible to the heater Connect the flow switch wires in place of the water pressure switch wires Rev 1 17 03 Installation contd WATER CONNECTIONS Reversible Inlet Outlet Connection The MiniMax CH heater is factory assembled with right side inlet outlet water connections The inlet outlet header can be reversed for left side water connections without removing the heat exchanger Reversing Water Connections Disassembly Tools needed 1 4 in Nut Driver 9 16 in Socket and Wrench 1 2 in amp 9 16 in Open Wrench Screw Driver s Flathead amp Phillips 1 Remove the inspection plates 2 Disconnect all wires from the high limit switches except the short jumper wire The exact order of the disconnection is not important NOTE There is no reason to remove the high limit and pressure switches or the thermister from the front header during the reversing procedure as they will be in the proper location when installed on the left side Disconnect the pressure switch wiring 4 Disconnect the
19. anada wires must be CSA approved AWARNING The heater must be electrically grounded and bonded in accordance with local codes or in the absence of local codes with the latest national electrical codes ANSI NFPA No 70 In Canada CSA standard C22 1 Canada Electrical Code Part 1 and or local codes Always use crimp type connectors when connecting two wires This heater 15 equipped with a reversible junction box to allow line voltage to be wired from either side Figure 5 Rev 1 17 03 A 7 Regulator Adjustment Cap 1 8 NPT Plug Inlet Press Honeywell 1 8 NPT Plug Manifold Press REGULATOR ADJUSTMENT CAP P Transformer Wiring Instruction 15 V 1 PHASE 50 60 HZ 230V 1 PHASE Figure 6 FIELD WIRES P N 472128 Installation contd iagram D iring ic Ignition Max CH 150 IID Model Electroni ini M HOLIMS 199195 LVLSOWYAHL VdS 440 100d gt 3univu3aWal H3 LINOI AYVAS 1004 WOO vds HOd sen 9 TIVO NO 35010 TOHLNOO lVISONWH3H 3HIM Xnv av O G ceo HOLIMS 3 LOIW3H ON uaNung HOLIMS 33O NO 1VNH3LX3 1848 wna AW ATIIHM HOLIMS suas 1 E as AW Ad
20. d 12 GAS CONNECTIONS GAS LINE INSTALLATIONS Before installing the gas line be sure to check which gas the heater has been designed to burn This is important because different types of gas require different gas pipe sizes The rating plate on the heater will indicate which gas the heater 15 designed to burn Tables 7 9 on pages 12 and 13 shows which size pipe is required for the distance from the gas meter to the heater The table is for natural gas at a specific gravity of 65 and propane at specific gravity of 1 5 When sizing gas lines calculate three 3 additional feet of straight pipe for every elbow used When installing the gas line avoid getting dirt grease or other foreign material in the pipe as this may cause damage to the gas valve which may result in heater failure The gas meter should be checked to make sure that it will supply enough gas to the heater and any other appliances that may be used on the same meter The gas line from the meter will usually be of a larger size than the gas valve supplied with the heater Therefore a reduction of the connecting gas pipe will be necessary Make this reduction as close to the heater as possible The heater and any other gas appliances must be disconnected from the gas supply piping system during any pressure testing on that system greater that PSIG The heater and its gas connection must be leak tested before placing the heater in operation Do not use flame to tes
21. diagnosing a failure in the heater s function Do not try to light any heater Donottouch 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 Ifyou cannot reach your gas supplier call the Fire Department OPERATING INSTRUCTIONS 1 STOP Read the safety information above 9 Replace the control access door 2 Set the thermostat to the lowest setting 10 Turn on the electrical power to the heater 3 Turn off electric power to the heater 11 Set the thermostat to the desired setting 4 This heater is equipped with an ignition device 12 Ifthe heater will not operate follow the instruc which automatically lights the pilot Do not try tions To Turn Off Gas To Heater and call your to light the pilot by hand service technician or gas supplier 5 Remove the control access door 6 Pushin gas control knob slightly and turn clock wise Y to OFF 7 Wait five 5 minutes to clear out any gas If you Gas then smell gas STOP Follow B in the safety Inlet information above If you don t smell gas go to the next step 8 Turn knob on gas control counterclockwise to ON see Figure 1 Figure 1 Gas control knob shown in position OFF GAS TO APPLIANCE 1 Setthe thermostat to lowest setting 4 Push in gas control knob slightly and
22. e size Then within a short distance from the heater they will install a second regulator which is the second stage and this would be set at the reguired inlet pressure of 11 inches of W C for all the Pentair Pool Heaters Stage One High Pressure Gas Pipe Sizing MAXIMUMEQUIVALENT PIPE LENGTH MAXIMUM EQUIVALENT PIPE LENGTH Table 8 REGULATED MANIFOLD PRESSURE TEST 1 Attach the manometer to the heater jacket 2 Shut off the main gas valve 3 Remove 1 8 in NPT plug on the outlet side of the valve and screw in the fitting from the manometer kit 4 Connect the manometer hose to the fitting 5 Fire the heater 6 The manometer must read 4 in WC for natural gas 11 in WC for propane gas while the heater is operating 7 For adjustment remove the Regulator Adjustment Cap and using a screwdriver turn the screw clockwise to increase counterclockwise to decrease gas pressure ACAUTION The use of Flexible Connectors FLEX is NOT recommended as they cause high gas pressure drops Rev 1 17 03 Stage Two Low Pressure Gas Pipe Sizing MAXIMUM EQUIVALENT PIPE LENGTH oto 10 Feet 101620 Feet Table 9 REGULATOR ADJUSTMENT CAP 1 2 P S Figure 11 MINIMAX CH GAS PRESSURE REQUIREMENTS Natural Propane 14 in WC 12 in WC 11 in WC Maximum inlet gas pressure Minimum inlet gas pressure Normal manifold pressure 6 WC for 400 model
23. emperature 2 Off position Heater will not come on regardless of drop in pool or spa temperature 3 Spa position This allows separate control of spa water temperature or an alternate lower pool temperature P N 472128 Rev 1 17 03 Maintenance MAINTENANCE INSTRUCTIONS Itis recommended that you check the following items at least every six months and at the beginning of every swimming season 1 Examine the venting system Make sure there are no ob structions in the flow of combustion and ventilation air 2 Visually inspect the main burner and the pilot burner flame The normal color ofthe flame is blue When flame appears yellow burners should be inspected and cleaned see Figure 8 3 Keep the heater area clear and free from combustibles and flammable liquids Figure 7 ENERGY SAVING TIPS If possible keep pool or spa covered when not in use This will not only cut heating costs but also keep dirt and debris from settling in the pool and conserve chemicals Figure 8 he 2 Reduce the pool thermostat setting to 78 F or lower This is accepted as being the most healthy temperature for swimming by the American Red Cross 3 Use an accurate thermometer 4 Whenthe proper maximum thermostat settings have been determined tighten the thermostat knob stopper SPRING AND FALL OPERATION ACAUTION REMOVE THE FLOW VALVE ASSEMBLY WHEN DRILLING THE HOLE TO INSTALL A PRV OTHERWISE
24. er top piece after first removing the sheet metal screws attaching it to the cabinet 2 Install the adaptor vent kit 3 Install the top cover vent kit 4 Install the draft hood vent kit Use the provided screws to secure the vent assembly 2 PLC s Figure 18 Rev 1 17 03 Installation contd 17 ELECTRICAL MiniMax CH Millivolt Wiring Diagram MINIMAX WIRING DIAGRAM MILLIVOLT DUAL THERM HONEYWELL ELECTRONIC IF ORIGINAL FACTORY WIRING MUST BE REPLACED INSTALLER MUST SUPPLY UL OR IF CANADA APPROVED WIRE 18 GAUGE 600V 105 C TEMPERATURE RATING THERMAL FUSE WIRING MUST BE REPLACED WITH UL OR CSA IF CANADA APPROVED WIRE 18 GAUGE 600V 125 TEMPERATURE RATING INTERCONNECTING WIRING TO APPLIANCE MUST CONFORM TO THE NATIONAL ELECTRICAL CODE OR SUPERCEDING LOCAL WIRING CODES PILOT GENERATOR SAFETY PRESS GAS VALVE HI LIMIT SHUT OFF SWITCH SENSOR SPA Figure 19 NOTE When connecting a remote control to the MiniMax CH you must install the low voltage thermostat wires in separate conduit from ANY line voltage wires Failure to follow these instructions will cause the thermostat relay to react erratically Rev 1 17 03 P N 472128 Troubleshooting General Possible Cause Remedy Heater will not come on Pump not running Place pump in operation Pump air locked Check for leaks Filter dirty Clean filter Pump strainer cl
25. led THERMOSTAT TSTAT This light is on when the thermostat contacts close signaled by the water temperature falling below the setpoint calling for the heater to fire to maintain the desired water temperature P N 472128 AUXILIARY AUX This light is on when it indicates the remote switch contacts are closed This allows you to observe if your remote switch is properly closing the heater control circuit When shipped from the factory a jumper 15 installed to maintain closed circuit in the absence of a remote switch PRESSURE PRESS This light is on when Spa Pool Selector switch is on indicates the circulation pump is running properly If pressure light fails to light the pump may have lost its prime or water flow may be restricted by an inadvertently closed valve or clogged filter or pump basket If you have determined that there is no water flow restriction to the heater you should call a qualified serviceman Rev 1 17 03 Operation contd HEAT HEAT The heat light is on any time the thermostat has signaled a call for heat which initializes the ignition safety firing circuit the light comes on to indicate successful firing of the main burners TROUBLESHOOTING CONTROLS SERVICE SERVICE The service light is off during normal operation of heater The light only comes on if a problem with a control has occurred or when the heater is first firing The problem must be investigated by the serviceman prio
26. m amp MiniMax CH POOL amp SPA HEATERS OPERATION amp INSTALLATION MANUAL FOR YOUR SAFETY READ BEFORE OPERATING If you do not follow these instructions exactly a fire or explosion may result causing property damage personal injury or loss of life For additional free copies of this manual call 800 831 7133 Pentair Pool Products Because reliability matters most Warning To Retain For Future Reference U S Patent Numbers 6 295 980 5 318 007 5 228 618 5 201 307 4 595 825 Warning Improper installation adjustment alteration service or maintenance can cause property damage personal injury or death Installation and service must be performed by a qualified installer service agency or the gas supplier WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance For Your Do not touch any electrical switch do not use any phone in your building Safety 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 Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or other appliances Pentair Pool Products Inc 1620 Hawkins Ave Sanford NC 27330 919 774 4151 10951 W Los Angeles Ave Moorpark CA 93021 805 523 2400 Rev 1 17 03 P N 472128 Table of Contents Introd ction ape 3 Important iii ent
27. ms diabetes or blood pressure problems should obtain their physician s advice before using spas or hot tubs 6 Persons taking medication which induce drowsiness such as tranquilizers antihistamines or anticoagulants should not use spas or hot tubs AWARNING Should overheating occur or the gas supply fail to shut off turn off the manual gas control valve to the appliance Do not use this heater if any part has been under water Immediately call a qualified service technician to inspect the heater and to replace any part of control system and gas control which has been under water P N 472128 Rev 1 17 03 Operation contd 5 MINIMAX CH MILLIVOLT LIGHTING OPERATION NATURAL GAS amp PROPANE FOR YOUR SAFETY READ BEFORE LIGHTING If you do not follow these instructions exactly a fire or explosion may result causing personal injury loss of life and property damage Since propane gas is heavier than air escaping propane will accumulate and remain at ground level Do not attempt to light the heater If you suspect a propane leak lighting the heater can result in a fire or explosion which can cause personal injury death and property damage A This heater is equipped with a pilot which must be Ifyou cannot reach your gas supplier call the Fire lighted manually When lighting the pilot follow Department these instructions exactly C Use only your hand to push in or turn the gas control B BEFORE LIGHTING
28. n FRONT VIEW SIDE VIEW 33 3 8 in 22 3 8 in Table 3 d d 51 DIM 51 B DIM Outdoor installation with vent kit DIM X 400 agggB amp 228 588 A DIM Pies 21 33 3 8 in 22 3 8 in 51 in 4 875 Table 4 CE DIM Indoor installation stack USA only Outdoor shelter installation Canada B B om om rom em Table 5 Rev B 1 17 03 P N 472128 am MiniMax CH col L Installation contd MANUAL HEATER BY PASS TANE S CHECK VALVE ISOLATION VALVE Optional 2 Required when installation is below water level 3 Required when flow rates exceed 120 gpm Figure 10 PLUMBING CONNECTIONS The MiniMax CH heater has the unique capability of direct schedule 40 PVC plumbing connections ACAUTION Before operating the heater on a new installation turn on the circulation pump and bleed all the air from the filter using the air relief valve on top of the filter Water should flow freely through the
29. n drill bit position the L bracket to hold the top cover and outdoor stack Drill the pilot holes through the L bracket holes to accept the screws 6 Secure the vent stack and the inner top with the 8 x 1 4 in sheet metal screws through the L brackets Rev B 1 17 03 Installation contd INDOOR INSTALLATION USA ONLY OUTDOOR SHELTER INSTALLATION CANADA products of combustion and vent gases must be completely removed to the outside atmosphere through a vent pipe which is connected to the draft hood A vent pipe extension of the same size must be connected to the draft hood and extended at least 2 feet higher than highest point of the roof within a 10 foot horizontal radius and at least 3 ft higher than the point at which it passes through the roof or as permitted by local code see Figures 15 and 16 The vent should terminate with an approved vent cap weather cap for protection against rain or blockage by snow Double wall vent pipe and an approved roof jack shall be employed through the roof penetration The use of double walled type B vent pipe is recommended The draft hood must be installed so as to be in the same atmospheric pressure zone as the combustion air inlet to the pool heater The certified factory draft hood must not be modified in any way and must be employed in every indoor installation The heater must be located as close as practical to a chimney or gas vent The heater sho
30. ners and burner manifold the inlet outlet header and the return header This warranty does not cover rusting or corrosion on cabinets or burners that does not affect the heater s operation The following parts are covered for 2 years from date of purchase The automatic flow control valve all controls heat exchanger pilot generator and the pilot assembly This warranty only applies to the original purchaser 3 This warranty shall not apply to any units or parts which have been subject to accident negligence alteration abuse misapplication or misuse The above warranty applies only if the heater is installed and operated in complete compliance with the installation and operation manual provided with each unit Copies of this manual are available by writing to Pentair Pool Products Inc at the address below Pentair Pool Products Inc assumes no liability except for the repair or replacements of parts as specified above Ship defective parts or equipment along with serial number and purchase date transportation prepaid to the address below Purchaser shall be responsible for freight charges for return of merchandise to purchaser Some states do not allow exclusion or limitation of incidental or consequential damages so the above may not apply to you This warranty gives you specific legal rights and you may also have other rights which vary from state to state HEATER SERIAL NUMBER Please Fill In Pentair Pool Products
31. ogged Clean strainer Defective wiring or connection Repair or replace wires Defective pressure switch Replace switch Defective gas controls Call serviceperson On Off switch in OFF position Turn switch to ON Heater Short Cycling Rapid On and Off Operation Insufficient water flow Clean filter and pump strainer Defective wiring Repair or replace wiring Defective flow valve or out of adjustment Call serviceperson Defective hi limit and or thermostat Call serviceperson Heater Makes Knocking Noises Make sure all valves on system are open Heater operating after pump has shut off Shut off gas supply and call serviceperson Heater exchanger scaled Shut off gas supply and call serviceperson ACAUTION Please consult the latest edition of the MiniMax Service Manual for complete service and repair instructions Repairs should only be attempted by properly trained service personnel P N 472128 Rev 1 17 03 19 MINIMAX CH HEATER ALL MODELS INNER TOPS Part No Rev 1 17 03 P N 472128 20 MiniMax CH Parts List em aso zw zw se se 2 a7orea aroros aroros oven suo rocker single poe dowe row 1 rotes aroras 470190 470186 470106 70106 8 Control panel assy complete Millivolt 1 472175 472174 472173 472172 472171 472170 2 EA 3 EA 4
32. ol access door Rev 1 17 03 A 3 P N 472128 Operation OPERATING CONTROLS Dual Temperature Control System Electronic and Millivolt Models For convenience and economy all MiniMax CH heaters are equipped with two thermostats on the front ofthe heater control panel see Figure 3 THERMOSTAT SELECT POOL y SPA Power AT service HOT COLD COLD pon TEMP Figure 3 THERMOSTAT KNOB STOPPER Each thermostat is equipped with a mechanical stop that can be locked or unlocked with use of a screwdriver to prevent temperatures in excess of that desired by the user see Figure 4 SPA TEMP The maximum setting can be adjusted by loosening the screw A and turning the stopper dial to desired maximum setting Lock the setting by tightening the screw The Mechanical stop is under the knob Ensure that the knob is stopping at the correct position when the knob is rotated clockwise from a lower temperature position See Thermostat Adjustment NOTE To eliminate error due to piping heat losses measure pool temperature with an accurate thermometer directly at the pool or spa INDICATOR LIGHT DESCRIPTION THERMOSTAT ADJUSTMENT The knob with locking feature eliminates the need for constant thermostat adjustments Set the knob pointer to the desired pool or spa temperature If further adjustment is needed rotate the knob until the desired temperature is obtained This knob position c
33. on the front of the heater control panel see Figure 5 THERMOSTAT KNOB STOPPER Each thermostat is equipped with a mechanical stop that can be locked or unlocked with use of a screwdriver to prevent temperatures in excess of that desired by the user see Figure 6 The maximum setting can be adjusted by loosening the screw A and turning the stopper dial to desired maximum setting Lock the setting Figure 5 by tightening the screw The Mechanical stop is under the knob Ensure that the knob is stopping at the correct position when the knob is rotated clockwise from a lower temperature position See Thermostat Adjustment NOTE To eliminate error due to piping heat losses measure pool temperature with an accurate thermometer directly at the pool or spa THERMOSTAT ADJUSTMENT The knob with locking feature eliminates the need for constant thermostat adjustments Set the knob pointer to the desired pool or spa temperature If further adjustment is needed rotate the knob until the desired temperature is obtained This knob position corresponding to your desired maximum pool or spa temperature may now be preset locked by the knob stopper which prevents the knob from being turned beyond the maximum temperature you set POWER THERMOSTAT SELECT SWITCH The Pool Off Spa switch allows the heater to be turned off when heating is not desired Knob Stopper Figure 6 1 Pool position Maintains selected pool t
34. orresponding to your desired maximum pool or spa temperature may now be preset locked by the knob stopper which prevents the knob from being turned beyond the maximum temperature you set Figure 4 POWER THERMOSTAT SELECT SWITCH The Pool Off Spa switch allows the heater to be turned off when heating is not desired 1 Pool position Maintains selected pool temperature 2 Off position Heater will not come on regardless of drop in pool or spa temperature 3 Spe position This allows separate control of spa water temperature The MiniMax Pool Heater provides nine status indicator lights six can be seen from the front of the control panel which help you understand the operation of the heater If something should go wrong the lights will aid in troubleshooting the problem Three additional lights can be seen after opening the control panel These three lights give the service technician advanced troubleshooting capability All the LED lights are green with the exception of the red service LED POWER LIGHT POWER The light is on at all times in any switch position indicating 24 VAC power is being supplied to the control circuit If it fails to light no other light will be on Possible causes are a external power to the heater is disconnected check service panel circuit breaker or fuses b local circuit breaker inside the transformer has tripped investigate cause before resetting c transformer has fai
35. r Connections ene a gebe te B PR ER p eerte e edite db ides 11 Insulating High Limits when Reversing 5 ias dote dia 11 Gas iia 12 Gas Line Installation icri terc nne tete Pd hte e eti i d er ier 12 Pipe Sizing Chart Gas Pressure Requirements sese tenente tenentes 12 Pipe Sizing Chart Propane 2 Stage Regulation teet em pterea 13 Regulated Manifold Pressure Test tite eet rere deerit nente teen edt ee reden deed ederet 13 MONCH ALON since acere ien rtr Xn Ern Tena rna reno na Ere earn ao Reuse ave 14 Outdoor Installation Requirements eren ettet nitent ege ere iei dte Beendete 14 Outdoor Cap Installation aer rom re teet este ee BE e pida ree edades 14 Indoor Installation Requirements e rre p er o reto ra qu me PER ERG aO er 15 Installation on Floors Constructed of Combustible Materials sse 16 Indoor Draft Flood Installation Senin din de reti lernen ete eren e ete ete ee ee tee gets 16 EBl CtriCall em ARAS A aan AU EA da iso 17 Millivolt Wiring Dia Maa rie th epe A 17 Trouble Shooting General cusco 18 MiniMax CH Parts List 4 Exploded View 19 21 MiniMax CH 150 IID Model Appendi
36. r of this manual and a copy of the warranty and warranty registration card are included with the product Return the warranty registration card after filling in the serial number from the rating plate inside the heater Pentair Pool Products high standards of excellence include a policy of continuous product improvement resulting in your state of the art heater We reserve the right to make improvements which change the specifications of the heater without incurring an obligation to update the current heater equipment SAFETY RULES Spa or hot tub water temperatures should never exceed 104 F 40 C A temperature of 100 F 38 C 15 considered safe for a healthy adult Special caution is suggested for young children Drinking of alcoholic beverages before or during spa or hot tub use can cause drowsiness which could lead to unconsciousness and subsequently result in drowning Pregnant women beware Soaking in water above 102 F 39 C can cause fetal damage during the first three months of pregnancy resulting in the birth of a brain damaged or deformed child Pregnant women should stick to the 100 F 38 C maximum rule 4 Before entering the spa or hot tub the user should check the water temperature with an accurate thermometer Spa or hot tub thermostats may err in regulating water temperatures by as much as 4 F 2 2 C 5 Persons with a medical history of heart disease circulatory proble
37. r to attempts to fire the heater again The diagrams that follow give examples of troubleshooting a malfunctioning heater using the assistance of the indicator lights Example of troubleshooting with the assistance of the indicator lights SYMBOL TABLE SWITCH OR DEVICE OPEN CIRCUIT BLOCK CURRENT 1 vie O teour O or N INCOMING TRANSFORMER CIRCUIT LINE VOLTAGE BREAKER THERMOSTAT RELAY PWR O ss O Power N sce FRONT PANEL LEDS INCOMING TRANSFORMER CIRCUIT LINE VOLTAGE BREAKER REMOTE THERMOSTAT RELAY PWR O 0 POWER sve SWITCH OR DEVICE CLOSED CIRCUIT PASS CURRENT IGNITION MODULE GAS VALVE HI TEMP LIMIT SWITCHES TFUSE My THERMOSTAT CIRCUIT BOARD WATER AT SELECTED TEMPERATURE OR POOL OFF SPA THERMOSTAT SELECT SWITCH OFF NORMAL OPERATION NORMAL OPERATION IGNITION MODULE HI TEMP LIMIT SWITCHES CLOSE IF NO MV THERMOSTAT CIRCUIT BOARD THERMOSTAT CALLING FOR HEAT PUMP OFF NO PRESSURE BLOCKS FIRING NORMAL OPERATION FRONT PANEL LEDS Rev 1 17 03 5 P N 472128 Operation contd TROUBLESHOOTING CONTROLS Continued SYMBOL TABLE SWITCH OR DEVICE SWITCH OR DEVICE OPEN CIRCUIT CLOSED CIRCUIT or O BLOCK CURRENT oo PASS CURRENT IGNITION MODULE GAS VALVE INCOMING TRANSFORMER CIRCUIT HI TEMP LINE VOLTAGE BREAKER REMOTE LIMIT SWITCHES TFUSE 0 5 RELAY xl AMI PRE
38. rafts may require the use of a stack type outdoor vent kit available at additional cost NOTE This unit shall not be operated outdoors at temperatures below 0 for propane and 20 F for natural gas P N 472128 14 STACK TYPE OUTDOOR VENT KIT Model Vent Cap Product Vent Dia 150 OV15 460237 6 in 200 OV20 460222 250 25 460223 300 OV30 460224 350 OV35 460225 400 OV40 460226 Table 11 ES Outdoor Stack d P d Top Cover Eo Flue Adaptor lt A Inner Panel Flue Collector m D Figure 13 VENT STACK L BRACKET INNER PANEL Figure 14 OUTDOOR VENT CAP INSTALLATION The MiniMax CH heater is shipped standard as an outdoor stackless unit To install the outdoor vent kit 1 Take out the louvered outer top after first removing all 1 4 in sheet metal screws attaching it along its perimeter to the cabinet Set it aside 2 Place the flue adaptor over the flue collector opening Temporarily put the top cover from the kit on with the label to the front of the heater Center the flue adaptor evenly inside the top cover flue stack opening Remove the top cover and secure the centered flue adaptor to the inner panel with the provided 8 x 1 2 in drill qwik screws 3 Place the top cover with the hole for the stack on the heater cabinet 4 Install the vent stack through the hole in the top cover over the flue adaptor top ring 5 Using a 3 32 i
39. re eu ot e iba aou ee gemi ae d ran itae dus ed atti coe 3 Warranty Information i a reda tU e t a P T E PEE PE d E HALE Da E Dott na 4 M 4 Rule viii a Per e ene de 4 Millivolt Lighting Operation Natural 8 Propane 5 Operating Controls o eter i ae AR 6 aaen 7 Maintenance Instructions sse nennen tenete treten enitn rettet tenentes 7 Rellano dai bees 7 Energy Saving TIps dero er retenta e t d pe 7 Spring and Fall OperatlOri 3 5 ida 7 Winter Operation l 7 Chemical Balance sai ecce t ee i Pe e lee e RHET Pe IRR 8 Installation Instructions e 9 sc 9 Plumbing COMME CUONS DO D os 10 Plumbing ValV8s s patito ect qoia pepe eS eet bo Puente a 10 Manual Bypass vit tee tes ee eed E re red edd eed e REPE E e ede 10 Below PoollristallatiOn ii t n PERDRE OBERE ORO IER RIEN RES 10 Water Connectlons iret eren terri ne nnne ER VER EYE RARE ERR ERR NR RR EXR RAE ER RR SE ERR Sue Set 11 Reverse Wate
40. s Angeles Ave Moorpark CA 93021 805 523 2400 Rev 1 17 03 P N 472128 Operation MINIMAX CH 150 10 ELECTRONIC IGNITION LIGHTING OPERATION NATURAL GAS MM FOR YOUR SAFETY READ BEFORE LIGHTING AWARNING If you do not follow these instructions exactly a fire or explosion may result causing personal injury loss of life and property damage Do not attempt to light the heater if you suspect a natural gas leak Lighting the heater can result in a fire or explosion which can cause personal injury death and property damage A This heater is equipped with an ignition device C Use only your hand to push in or turn the gas which automatically lights the pilot Do not try control knob Never use tools If the knob will to light the pilot by hand not push in or turn by hand don t try to repair it B BEFORE OPERATING smell all around the Call a qualified service technician Forced or heater area for gas Be sure to smell next to attempted repair may result in a fire or explosion the floor because some gas is heavier than air D Do not use this heater if any part has been under and will settle on the floor water Immediately call a qualified service WHAT TO DO IF YOU SMELL GAS technician to inspect the heater and to replace any part of the control system and any gas control which has been under water E The MiniMax CH incorporates 9 nine indicator lights to aid you in the operation of the heater and to assist in
41. t the gas line Use soapy water or another nonflammable method A manual main shut off valve must be installed externally to the heater AWARNING Do not install the gas line union inside the heater cabinet This will void your warranty Pipe Sized For Length Of Run In Equivalent Feet xim PIPE SIZING FOR GAS LINE CONNECTIONS MAXIMUM EQUIVALENT PIPE LENGTH Natural gas at 1000 B T U per Cubic Foot Propane Gas at 2500 B T U per Cubic Foot 3e T 2 242 oss se scr e e pn o ve er o 20 50 50 1 eo so mo e0 t f 20 10 ao MODEL v vs aw a 9 per s soo Fw por 2e o 9 pepe pa p s 2 2 9 epo per pr 2o e a gt pe s no o mo Lm ps pe ps 9o _ EA pe pas To 50 9 P N 472128 Rev 1 17 03 Installation contd 13 Pipe Sized For Length Of Run In Equivalent Feet cont d PROPANE 2 STAGE REGULATION In many RESIDENTIAL Propane gas line installations the gas supplier and or installer will utilize a two stage regulation process where by at the supply tank they will install the first stage gas regulator which would be at a higher pressure usually 10 psi and can be for longer distance and in a smaller pip
42. te ALKALINITY High Low Total alkalinity is a measurement of the total amount of alkaline chemicals in the water and control pH to a great degree It is not the same as pH which refers merely to the relative alkalinity acidity balance Your pool water s total alkalinity should be 100 140 ppm to permit easier pH control A total alkalinity test is simple to perform with a reliable test kit You will need to test about once a week and make proper adjustments until alkalinity is in the proper range Then test only once every month or so to be sure it is being maintained See your local pool dealer for help in properly balancing the water chemistry Rev 1 17 03 Installation Instructions SPECIFICATIONS IMPORTANT NOTICE These installation instructions are designed for use by qualified personnel only trained especially for installation of this type of heating equipment and related components Some states require installation and repair by licensed personnel If this applies in your state be sure your contractor bears the appropriate license Outdoor installation stackless 400 Model A Dim B Dim 23 7 8 in 12 in 26 7 8 in 15 in 4 A DIM E 5 iE 211 29 78 in 18 i
43. turn 2 Turn off all electric power to the heater if clockwise X to OFF Do not force service is to be performed 5 Replace control access door 3 Remove control access door P N 472128 2 Rev 1 17 03 Operation contd MINIMAX CH 150 10 ELECTRONIC IGNITION LIGHTING OPERATION PROPANE ______ FOR YOUR SAFETY READ BEFORE LIGHTING _____ The MiniMax CH propane models have special features for additional safety and protection Read the safety instructions for natural gas page A 2 before proceeding AWARNING If you do not follow these instructions exactly a fire or explosion may result causing personal injury loss of life and property damage Since propane gas is heavier than air escaping propane will accumulate and remain at ground level Do not attempt to light the heater If you suspect a propane leak lighting the heater can result in a fire or explosion which can cause personal injury death and property damage WHAT TO DO IF YOU SMELL GAS Do not try to light matches or lighter Immediately call your gas supplier from a Do not try to light any heater neighbor s phone Follow the gas supplier s instructions Do not touch any electrical switch do not use any phone in your building Ifyou cannot reach your gas supplier call the Fire Department Do not tamper with the heater because it is dangerous and voids all warranties Shut off gas line at propane tank Safet
44. uld be installed at least 5 feet away from the pool or spa The heater must be placed in a suitable room on a non combustible floor or on a non combustible base and in an area where leakage from heat exchanger or water connections will not result in damage to the area adjacent to the heater or the structure When such locations cannot be avoided it is recommended that a suitable drain pan with adequate drainage be installed under the heater The pan must not restrict air flow Rev 1 17 03 15 Installations in basements garages or underground structures where flammable liquids may be stored must have the heater elevated 18 inches from the floor using a non combustible base The following minimum clearances from combustible materials must be provided Side Front Back Top Water Connection 18 in 24 in Remaining 6 in Ceiling Clearance 36 in To ceiling or roof Height above any roof surface within 10 ft horizontally More Than10 ft gt Figure 15 Vent Cap and Riser Furnished by Installer Air Supply Ventilation Air Supply 1 Rise Per Foot Gas Combustion Recommended Figure 16 P N 472128 Installation contd NOTE The heater requires two uninterrupted air supply openings one for ventilation and one to supply oxygen for proper gas combustion The air supply openings should be sized according to Tables
45. x A1 A9 MiniMax CH 150 Model Parts List 4 Exploded View A10 A12 Warranty Information AAA espe etes Back Cover P N 472128 Rev 1 17 03 Introduction MiniMax CH Pool and Spa Heaters Congratulations on your purchase of a MiniMax CH high performance heating system Proper installation and service of your new heating system and correct chemical maintenance of the water will ensure years of enjoyment The MiniMax CH is a compact lightweight and efficient gas fired high performance pool and spa heater that can be directly connected to schedule 40 PVC pipe and has a built in top The MiniMax CH is a millivolt heater and has a self sustaining pilot and requires NO external power source IMPORTANT NOTICES For the installer and operator of the MiniMax CH pool and spa heater The manufacturer s warranty may be void if for any reason the heater 15 improperly installed and or operated Be sure to follow instructions set forth in this manual If you need any more information or if you have any questions regarding to this pool heater please contact Pentair Pool Products Inc at 800 831 7133 These heaters are designed for the heating of swimming pools and spas and should never be employed for use as space heating boilers general purpose water heaters in non stationary installations or for the heating of salt water ACAUTION OPE
46. y Lockout This MiniMax CH Propane Heater is equipped with a 100 safety lockout feature If the pilot does not light within a maximum of 90 seconds lockout will occur IE OPERATING INSTRUCTIONS 1 STOP Read the safety information above 9 Replace the control access door 2 Set the thermostat to the lowest setting 10 Turn on the electrical power to the heater 3 Turn off electric power to the heater 11 Set the thermostat to the desired setting 4 This heater is equipped with an ignition device 12 Ifthe heater will not operate follow the instruc which automatically lights the pilot Do not try to tions To Turn Off Gas To Heater and call your light the pilot by hand service technician or gas supplier 5 Remove the control access door 6 Pushin gas control knob slightly and turn clock wise My to OFF 7 Wait five 5 minutes to clear out any gas If you Gas then smell gas STOP Follow B in the safety Inlet m information on page 5 If you don t smell gas go to the next step 8 Tum knob on gas control counterclockwise KM to ON see Figure 2 Figure 2 Gas control knob shown in ON position PE TURN OFF GAS APPLIANCE _ 1 Setthe thermostat to lowest setting 4 Pushin gas control knob slightly and turn Turn off all electric power to the heater if clockwise V to OFF Do not force service is to be performed 5 Replace control access door 3 Remove contr
47. y the warranty WHAT A DISINFECTANT DOES Two pool guests you do not want are algae and bacteria To get rid of them and make pool water sanitary for swimming as well as to improve the water s taste odor and clarity some sort of disinfectant must be used Chlorine and bromine are universally approved by health authorities and are accepted disinfecting agents for bacteria control WHAT IS A DISINFECTANT RESIDUAL When you add chlorine or bromine to the pool water a portion of the disinfectant will be consumed in the process of destroying bacteria algae and other oxidizable materials The disinfectant remaining is called chlorine residual or bromine residual You can determine the disinfectant residual of your pool water with a reliable test kit available from your local pool supply store You must maintain a disinfectant residual level adequate enough to assure a continuous kill of bacteria or virus introduced into pool water by swimmers through the air from dust rain or other sources Itis wise to test pool water regularly Never allow chlorine residual to drop below 0 6 ppm parts per million The minimum level for effective chlorine or bromine residual is 1 4 ppm pH The term pH refers to the acid alkaline balance of water expressed on a numerical scale from 0 to 14 A test kit for measuring pH balance of your pool water is available from your local pool supply store see Table 1 Table 1 pH Chart Strongly Acid Neutral

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