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® MiniMax CH POOL & SPA HEATERS OPERATION & INSTALLATION MANUAL WARNING FOR YOUR SAFETY - READ BEFORE OPERATING Warning: If you do not follow these instructions exactly, a fire or explosion may result, causing property damage, personal injury or loss of life. For additional free copies of this manual;...
Introduction ® MiniMax 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.
Operation (contd.) This instruction manual provides operating instructions, PRODUCT IDENTIFICATION installation and service information for the MiniMax ® CH high performance heater. The information in this manual applies to To identify the heater, see rating plate on the inner front panel of the the MiniMax CH 150, 200, 250, 300, 350, and 400 natural gas ®...
Operation (contd.) ® MINIMAX CH MILLIVOLT LIGHTING/OPERATION- NATURAL GAS & PROPANE FOR YOUR SAFETY: READ BEFORE LIGHTING WARNING 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.
Operation (contd.) OPERATING (CONTROLS) Dual Temperature Control System For convenience and economy all MiniMax ® heaters are equipped with two thermostats 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;...
Maintenance MAINTENANCE INSTRUCTIONS CAUTION REMOVE THE FLOW VALVE ASSEMBLY WHEN DRILLING It is recommended that you check the following items at least THE HOLE TO INSTALL A PRV. OTHERWISE, YOU WILL every six months and at the beginning of every swimming season.
Maintenance (contd.) RULE: 7.4 to 7.6 is a desirable pH range. It is essential to CHEMICAL BALANCE maintain correct pH, see Table 2. Pool and Spa Water If pH becomes too high (over alkaline), it has Your Pentair Water Pool and Spa ®...
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.
Installation (contd.) MANUAL BY-PASS Where the flow rate exceeds the maximum 120 GPM, a manual bypass should be installed and P U MP P O O L F ILT E R adjusted. After adjustments are made, the valve P O O L MA N U A L IS O LA T IO N H E A T E R...
Installation (contd.) WATER CONNECTIONS INSULATING THE HIGH LIMITS Reversible Inlet/Outlet Connection When Reversing Heads on the The MiniMax CH heater is factory assembled with ® ® MiniMax CH Heater right side inlet/outlet water connections. The inlet/ On the MiniMax CH heater there is insulation installed ®...
Installation (contd.) 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 is designed to burn.
Installation (contd.) 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 pipe size.
Installation (contd.) VENTILATION STACK TYPE OUTDOOR VENT KIT . a i OUTDOOR INSTALLATION ONLY For outdoor installation with built in vent top, the heater . n i must be placed in a suitable area on a level, . n i noncombustible surface.
Installation (contd.) INDOOR INSTALLATION (USA ONLY) OUTDOOR SHELTER INSTALLATION (CANADA) All products of combustion and vent gases must be Installations in basements, garages, or completely removed to the outside atmosphere underground structures where flammable liquids through a vent pipe which is connected to the draft may be stored must have the heater elevated 18 hood.
Installation (contd.) B A S E F O R U S E O N NOTE C O MB U S T IB LE F LO O R S The heater requires two uninterrupted air supply openings; one for ventilation and one to supply oxygen for proper gas combustion.
Installation (contd.) 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 CSA (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 C˚...
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 clogged Clean strainer Defective wiring or connection Repair or replace wires Defective pressure switch Replace switch Defective gas controls...
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23 1 ® MiniMax (150 IID Model) POOL & SPA HEATERS OPERATION & INSTALLATION MANUAL (APPENDIX) WARNING FOR YOUR SAFETY - READ BEFORE OPERATING Warning: If you do not follow these instructions exactly, a fire or explosion may result, causing property damage, personal injury or loss of life. For additional free copies of this manual;...
Operation ® MINIMAX ELECTRONIC IGNITION LIGHTING/OPERATION - (150 IID) NATURAL GAS FOR YOUR SAFETY: READ BEFORE LIGHTING WARNING 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.
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Operation (contd.) ® MINIMAX ELECTRONIC IGNITION LIGHTING/OPERATION - (150 IID) PROPANE FOR YOUR SAFETY: READ BEFORE LIGHTING NOTE ® 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. WARNING If you do not follow these instructions exactly, a fire or explosion may result causing personal injury, loss of life and property damage.
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Operation (contd.) OPERATING (CONTROLS) Dual Temperature Control System - (Electronic and Millivolt Models) For convenience and economy all MiniMax CH heaters ® THERMOSTAT ADJUSTMENT are equipped with two thermostats on the front of the heater The knob with locking feature eliminates the need for control panel;...
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Operation (contd.) HEAT (HEAT) SERVICE (SERVICE) The heat light is on any time the thermostat has The service light is off during normal operation of heater. The light only comes on if a problem with a signaled a call for heat which initializes the ignition safety firing circuit -- the light comes on to indicate control has occurred or when the heater is first successful firing of the main burners.
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Operation (contd.) TROUBLESHOOTING (CONTROLS) - Continued S Y MB O L T A B LE S W IT C H O R D E V IC E S W IT C H O R D E V IC E O P E N C IR C U IT C LO S E D C IR C U IT LE D O F F LE D LIT...
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Installation R egulator A djustment C ap REGULATED MANIFOLD PRESSURE TEST 1/8" N P T P lug (Inlet P ress) 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.
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Installation (contd.) MiniMax CH (150 IID Model) Electronic Ignition Wiring Diagram P LU G P LU G P/N 472128 Rev. E 11-5-07...
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Installation (contd.) REMOTE SWITCH DUAL THERM IID ONLY JU MP E R R E Q U IR E D IF N O 2 W IR E R E MO T E S W IT C H 3 Wire Remote 24 V A C H ILMT T F U S E V A LV E...
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MINIMAX CH HEATER - 150 IID MODEL ® P/N 472128 A-10 Rev. E 11-5-07...
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® MiniMax CH Parts List - 150 IID Model t i k t i k , t l " 8 " 1 t i u c t i & t e l t e l v i l t l o t o l t e l t e l...
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® MiniMax CH Parts List - 150 IID Model, contd. e l l s t i ) y l t s i c i t p i l v i l t l o " 4 " 2 " 4 "...
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This document is subject to change without notice. Trademarks and Disclaimers: The Pentair Pool Products logo, Because reliability matters most and MiniMax are trademarks and/or registered trademarks of Pentair Water Pool and Spa, Inc. Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names of their products. Pentair Water Pool and Spa, Inc.
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