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MiniMax
OPERATION & INSTALLATION MANUAL
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; call (800) 831-7133.
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 licensed qualified installer, service agency or the gas supplier.
For Your
Safety
Rev. B 4-5-02
NT Low NOx Series
®
POOL & SPA HEATERS
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 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
10951 W. Los Angeles Ave., Moorpark, CA 93021
WARNING
WARNING
(919) 774-4151
•
(805) 523-2400
•
1 1
1
To
Consumer
Retain For
Future
Reference
P/N 472089
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Table of Contents
Troubleshooting
Related Manuals for Pentair Pool Products MiniMax NT Low NOx Series
Summary of Contents for Pentair Pool Products MiniMax NT Low NOx Series
- Page 1 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 •...
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Page 2: Table Of Contents
Table of Contents Introduction ....................... Important Notices ..................................Code Requirements ................................... Warranty Information ................................. Operation ........................Safety Rules ....................................HSI (Hot-Surface Ignition) Lighting/Operation - Natural Gas ..................... Installation Instructions .................... Specifications .................................... Installation — Electrical ................................Installation — Remote Hook-Ups (2 and 3 Wire) ........................Installation —... -
Page 3: Introduction
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. -
Page 4: Warranty Information
Pentair Pool Products’ high standards of excellence before installing the MiniMax NT Low NOx. include a policy of continuous product improvement History and experience has shown that most heater resulting in your state-of-the-art heater. -
Page 5: Hsi (Hot-Surface Ignition) Lighting/Operation - Natural Gas
Operation (Lighting) MINIMAX NT LOW NOx HSI ELECTRONIC IGNITION LIGHTING/OPERATION - 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. -
Page 6: Installation Instructions
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. -
Page 7: Installation - Electrical
Installation (Electrical) ELECTRICAL, for MiniMax NT Low NOx Heaters Electrical Rating 60 Hz 120 / 240 Volts AC, single phase NOTE The MiniMax NT Low NOx heater is prewired for 240 volt AC connection using the “RED/BROWN” female connector and the “WHITE”... -
Page 8: Installation - Remote Hook-Ups (2 And 3 Wire)
Installation (Remotes) REMOTE SWITCH DUAL THERM IID ONLY 3 Wire Remote JUMPER REQUIRED IF NO 2 WIRE REMOTE SWITCH 24 VAC PRESS HILMT TFUSE VALVE IGNITION MOD RETURN THERMOSTAT CIRCUIT BOARD POOL TPROBE REMOTE POOL/OFF/SPA THERMOSTAT SELECT SWITCH FRONT PANEL POOL/ OFF/SPA THERMOSTAT SELECT SWITCH... -
Page 9: Installation - Operating Controls
Installation (Operating Controls) OPERATING (CONTROLS) Dual Temperature Control System THERMOSTAT ADJUSTMENT For convenience and economy all MiniMax NT The knob with locking feature eliminates the need for Heaters are equipped with two thermostats on the constant thermostat adjustments. Set the knob pointer to front of the heater control panel;... -
Page 10: Installation - Troubleshooting (Controls)
Installation (Operating Controls, cont’d.) HEAT (HEAT) SERVICE (SERVICE) The heat light is on any time the thermostat has The service light is off during normal operation of signaled a call for heat which initializes the ignition heater. The light only comes on if a problem with a safety firing circuit -- the light comes on to indicate control has occurred or when the heater is first firing. - Page 11 Installation (Operating Controls, cont’d.) TROUBLESHOOTING (CONTROLS) - Continued SYMBOL TABLE SWITCH OR DEVICE SWITCH OR DEVICE OPEN CIRCUIT CLOSED CIRCUIT LED OFF LED LIT (BLOCK CURRENT) (PASS CURRENT) IGNITION MODULE GAS VALVE TRANSFORMER INCOMING CIRCUIT HI TEMP REMOTE PRESS TFUSE LINE VOLTAGE BREAKER LIMIT SWITCHES...
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Page 12: Installation - Wiring Diagram
Installation (Dual Voltage Wiring) MiniMax NT Low NOx - HSI Electronic Ignition Wiring Diagram (DUAL VOLTAGE w/6800 Control Board) P/N 472089 Rev. B 4-5-02... -
Page 13: Installation - Water Connections
Installation (Plumbing) WATER CONNECTIONS Reversible Inlet/Outlet Connection The MiniMax NT Low NOx 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 PUMP POOL POOL FILTER heat exchanger. -
Page 14: Installation - Gas Line
Installation (Gas Line) GAS CONNECTIONS Pipe Sized For Length Of Run In Equivalent Feet ¼ ½ 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. -
Page 15: Venting - Indoor Installations
Installation (Indoor) INDOOR VENTING—General Requirements The vent pipe must be the same size or larger. The MiniMax NT Low NOx heaters are capable of a 360-degree discharge rotation and operate with a positive vent static pressure and with a vent gas temperature less than 400°... - Page 16 Installation (Indoor) INDOOR INSTALLATION (USA ONLY) OUTDOOR SHELTER INSTALLATION (CANADA) 10 ft. Vent See page 17 for (Indoor) Vent Adaptors Ridge 2 ft. min. All products of combustion and vent gases must be 3 ft. min. completely removed to the outside atmosphere through Roof a vent pipe which is connected to the stack adaptor.
- Page 17 Installation (Indoor) NOTE b) Construct a non-combustible base from masonry The heater requires two uninterrupted air supply blocks as illustrated, see Figure 15. openings; one for ventilation and one to supply oxygen for proper gas combustion. The air supply openings should be sized according to Table 2. BASE FOR USE ON COMBUSTIBLE FLOORS Air supply requirements below apply to all MiniMax NT Low NOx heaters*.
- Page 18 Installation (Indoor) P/N 472089 Rev. B 4-5-02...
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Page 19: Venting - Outdoor Installations
Installation (Outdoor) VENTILATION OUTDOOR INSTALLATION ONLY (Outdoor Shelter Installation in Canada, see page 16) For outdoor installation with built in vent, 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. -
Page 20: Basic Operation - General Description
Basic Operation GENERAL DESCRIPTION The MiniMax NT Low NOx Pool and Spa Heater is a fan-assisted induced draft appliance. The MiniMax NT Low NOx is available in 200,000, 250,000, 300,000 and 400,000 btu/hr. capacities and are certified for both indoor and outdoor installations. The MiniMax NT Low NOx version natural gas pool heater must be used for installations in the South Coast Air Quality Management District (SCAQMD)—these heaters are certified to comply with SCAQMD Rule 1146.2 and also meet Ventura Co. -
Page 21: Basic Operation - Safety Controls
Basic Operation SAFETY CONTROLS AIR PRESSURE (FAN) SWITCH The air pressure switch is a safety device used to insure that the blower (fan) is operating and has been designed to monitor the vacuum (negative) pressure within the blower housing. The air pressures switch is factory set and is in the ignition module circuit—... -
Page 22: Basic Operation - Hsi Ignition Module
A “High Limit”, is a safety device that opens the electrical circuit and shuts off the heater based on a temperature set point within the “High Limit Device”. The MiniMax NT Low NOx series of heaters contains three (3) high limit devices, two (2) are located on the main inlet / outlet header, one sensing the inlet water temperature and one sensing the outlet water temperature. -
Page 23: Maintenance
Maintenance MAINTENANCE INSTRUCTIONS It is recommended that you check the following items at Pressure Relief Valve least every six months and at the beginning of every In some installa- swimming season. tions, a pressure 1. Examine the venting system. Make sure there are no relief valve (PVR) FOR PRV obstructions in the flow of combustion and... -
Page 24: Maintenance (Water Treatment)
Table 4. POOL AND SPA WATER If pH becomes too high (over alkaline), it Your Pentair Pool Products pool heater was designed has these effects: specifically for your spa or pool and will give you many 1. -
Page 25: Trouble Shooting
Troubleshooting - General Possible Cause Remedy Heater will not come on Automatic ignition system fails Check if electrical connections are correct and securely fastened – If YES, call serviceperson. Pump not running Place pump in operation Pump air locked Check for leaks Filter dirty Clean filter Pump strainer clogged... -
Page 26: Minimax Nt Low Nox Parts List & Exploded View (Dual Voltage)
MINIMAX NT LOW NOx HEATER - (Dual Voltage) MiniMAX NT Low NOx Heater (Dual Voltage w/6800 Controller) P/N 472089 Rev. B 4-5-02... - Page 27 MiniMax NT Low NOx Dual Voltage w/6800 Controller Replacement Parts ITEM DESCRIPTION QTY. Exhaust Grill 471592 Gasket, Exhaust Grill 471701 Top Cover 471885 471692 471886 471591 Exhaust Assy. 472014 472013 Blower 471938 471883 471884 Gasket, Blower 471610 Flue Collector Assy. 472008 472007 472006...
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Page 28: Limited Warranty
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.