Pentair NT Standard Series manual

Rev . A 1-2-02 P/N 472032 1 1 FOR YOUR SAFETY - READ BEFORE OPERA TING W arning: 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. Do not store or use gasoline or other flammable vapors and liquid[...]

P/N 472032 Rev . A 1-2-02 2 T able of Contents Introduction ............................................................................................................... 3 Important N otices .............................................................................................................. ..............................................[...]

Rev . A 1-2-02 P/N 472032 3 MiniMax NT Standard Pool and Spa Heaters Congratulations on your purchase of a MiniMax NT Standard 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 NT Standard is a compact, lightweight, ef[...]

P/N 472032 Rev . A 1-2-02 4 Operation This instruction manual provides operating instructions, installation and service information for the MiniMax NT Standard high performance heater . The information in this manual applies to the MiniMax NT Standard 200, 250, 300, and 400 models. It is very important that the owner/installer read and understand t[...]

Rev . A 1-2-02 P/N 472032 5 Operation (Lighting) FOR YOUR SAFETY : READ BEFORE LIGHTING A. This heater is equipped with an ignition device which automatically lights the main burners. Do not try to light the burners by hand. B. BEFORE OPERA TING, smell all around the heater area for gas. Be sure to smell next to the floor because some gas is heavie[...]

P/N 472032 Rev . A 1-2-02 6 Installation Instructions IMPOR T ANT 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, b[...]

Rev . A 1-2-02 P/N 472032 7 Installation (Electrical) ELECTRICAL, for MiniMax NT Standard Heaters Electrical Rating 50/60 Hz 120 / 240 V olts AC, single phase NOTE The MiniMax NT Standard heater is prewired for 240 volt AC connection using the “BROWN” female connector and the “WHITE” common male connector; see below , Figure 4. If you requi[...]

P/N 472032 Rev . A 1-2-02 8 TWO-WIRE OR THREE-WIRE REMOTE HOOK-UP Installation (Remotes) Before connecting the remote control system please read the following: 1. First turn the gas valve to the "OFF" position and power up the heater , now using the front buttons on the temperature controller , set the "SP A" and "POOL"[...]

Rev . A 1-2-02 P/N 472032 9 • Three-wir e remote: a) Using 3/16" female quick disconnect connectors, connect the common wire to the "GND" tab of the temperature controller , then connect the two remaining wires to the temperature controller corresponding to the remote control device, pool wire to "POOL" tab, spa wire to &[...]

P/N 472032 Rev . A 1-2-02 10 Installation (Dual V oltage Wiring) MiniMax NT Standard (ALL MODELS) HSI Electronic Ignition Wiring Diagram (DUAL VOL T AGE) GRN IGN MODULE BURNER FENWAL GND MV1 TH S2 L2 L1 S1/240 MiniMax NT STANDARD ALL MODELS WIRING DIAGRAM IF ORIGINAL FACTORY WIRING MUST BE REPLACED, INSTALLER MUST SUPPLY UL OR CSA (IF CANADA) APPRO[...]

Rev . A 1-2-02 P/N 472032 11 PLUMBING CONNECTIONS The MiniMax NT Standard heater has the unique capability of direct schedule 40 PVC plumbing connections. A set of bulkhead fittings is included with the MiniMax NT Standard to insure conformity with Pentair ’ s recommended PVC plumbing procedure. Other plumbing connections can be used. CAUTION Bef[...]

P/N 472032 Rev . A 1-2-02 12 Installation (Gas Line) GAS CONNECTIONS GAS LINE INST ALLA TIONS 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 designe[...]

Rev . A 1-2-02 P/N 472032 13 INDOOR VENTING—General Requirements The vent pipe must be the same size or larger . The MiniMax NT Standard 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° F . The total length of the horizontal run must not exceed [...]

P/N 472032 Rev . A 1-2-02 14 INDOOR INST ALLA TION (USA ONL Y) OUTDOOR SHEL TER INST ALLA TION (CANADA) See page 15 for (Indoor) V ent Adaptors All products of combustion and vent gases must be completely removed to the outside atmosphere through a vent pipe which is connected to the stack adaptor . A vent pipe extension of the same size must be co[...]

Rev . A 1-2-02 P/N 472032 15 . o N t r a P. a i D t n e V 6 0 5 0 6 4. n i 4 7 0 5 0 6 4. n i 5 Figure 15. Y L P P U S R I A D E R I U Q E R l e d o M n o i t s u b m o C r o f r i A . n I . q S n o i t a l i t n e V r i A . n I . q S 0 0 20 0 20 0 2 0 5 20 5 20 5 2 0 0 30 0 30 0 3 0 0 40 0 40 0 4 l e d o Mt i K e s a B e l b i t s u b m o C - n o [...]

P/N 472032 Rev . A 1-2-02 16 Detail H INDOOR INST ALLA TIONS MINIMAX NT ST ANDARD VENTING GUIDELINES vent terminated at least 24" abov e any object within 10 ft. V ent Cap Ridge Chimney 3 ft. min. 2 ft. min. 10 ft. 4' 7' 4' Air Supply V entilation Air Supply Combustion V ent Hood W alkwa y 3' 1' min. 1' min. 1&apo[...]

Rev . A 1-2-02 P/N 472032 17 VENTILA TION OUTDOOR INST ALLA TION ONL Y (Outdoor Shelter Installation in Canada, see page 14) 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 he[...]

P/N 472032 Rev . A 1-2-02 18 GENERAL DESCRIPTION The MiniMax NT Standard Pool and Spa Heater is a fan-assisted induced draft appliance. The MiniMax NT Standard 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 Standard is designed to operate both in [...]

Rev . A 1-2-02 P/N 472032 19 SAFETY CONTROLS AIR PRESSURE (F AN) 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—the ignition m[...]

P/N 472032 Rev . A 1-2-02 20 SAFETY CONTROLS, (cont’d.) IGNITION MODULE The Ignition Module is microprocessor based and operates on 24 V AC supplied by the transformer . The control utilizes a microprocessor to continually and safely monitor , analyze, and control the proper operation of the gas burners. The module with the presence of the flame [...]

Rev . A 1-2-02 P/N 472032 21 MINIMAX NT ST ANDA RD PENT AIR TEMPERA TURE CONTROLLER 7800 (See Figur e 20, for keypad and Pentair T emperatur e Contr oller 7800 layout details.) GENERAL The MiniMax NT Standard Pentair T emperature Controller 7800 is the heart of the control system. It controls all functions of the heater after first verifying that a[...]

P/N 472032 Rev . A 1-2-02 22 OFF SPA POOL SET MODE PROGRAM TEMP TEMP STEP Increase Raise ( ) Decrease Lower ( ) 1. Before changing the temperature, make sure the “ T emperatur e ” is in the right window , see pages 22 and 23, if “ T ime ” is displayed, press the MODE key to change to the “T emperatur e Mode” . 2. T o change the Pool T e[...]

Rev . A 1-2-02 P/N 472032 23 Time Setting (Programming) TIME SETTING, (cont’d.) 3. The first setting, once you enter the Pr ogramming Mode , will be the Day . The Day icon will be flashing. Use the UP or DOWN arrow TEMP keys to locate the appropriate day , then press the SET key . The Day is now set and the Hour T ime icon will start to flash. 4.[...]

P/N 472032 Rev . A 1-2-02 24 MAINTENANCE INSTRUCTIONS It is 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 obstructions in the flow of combustion and ventilation air . 2. V isually inspect the main burner and the hot surfac[...]

Rev . A 1-2-02 P/N 472032 25 Maintenance (W ater T reatment) RULE: 7.4 to 7.6 is a desirable pH range. It is essential to maintain correct pH, see T able 4. If pH becomes too high (over alkaline), it has these effects: 1. Greatly lowers the ability of chlorine to destroy bacteria and algae. 2. W ater becomes cloudy . 3. There is more danger of scal[...]

P/N 472032 Rev . A 1-2-02 26 NORMAL OPERA TION SEQUENCE (Refer to Figure 20 of Pentair T emperature Controller 7800 keyboard) The heater features a fully automated firing start-up and shutdown sequence under the control of the MiniMax NT Standard Pentair T emperature Controller 7800. Now that the heater has been properly installed and wired for eit[...]

Rev . A 1-2-02 P/N 472032 27 T roubleshooting—Normal Operation of Heater Illustration of Pentair T emperature C ontroller 7800 with all fault icons displayed for clarity . TFUSE AUX FAN PRESS H-LMT IGN POWER SERVICE SYSTEM HEAT OFF SPA POOL TEMP TEMP CURRENT TEMP SET TEMP/TIME NORMAL SET MODE FAULT CONDITION LCD ICONS POOL OR SPA (DISPLAY ALTERNA[...]

P/N 472032 Rev . A 1-2-02 28 LEGEND OF F AUL T ICONS AND TYPE OF PROBLEMS FLAGGED This fault icon displays whenever there is an unexpected loss of flame. This condition may arise from air in gas supply line or malfunction of flame detection circuit or related hardware. This is a hard lockout condition requiring a manual reset to clear . This fault [...]

Rev . A 1-2-02 P/N 472032 29 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 Clean strainer Defective[...]

P/N 472032 Rev . A 1-2-02 30 MINIMAX NT ST ANDARD HEA TER - (Dual V oltage) 1 4 3 5 6 8 9 10 12 33 34 36 48 47 46 44 42 43 38 37 18 17 16 15 21 14 32 39 2 7 11 22 23 20 19 35 45 41 40 13 30 27 28 31 26 24 25 29 50 49[...]

Rev . A 1-2-02 P/N 472032 31 Note: Some parts are not listed in above table, please contact our Customer Service Department for details. IT E M D E SC R IPT I O N Q T Y . 2 0 0 2 5 0 3 0 0 4 0 0 1 Exh a u st G r i l l 1 2 Gas k et , E x haus t G r ill 1 3 T op Cov er 1 471885 47 1692 47 1886 47159 1 4 E x haus t A s s y . 1 472030 47 2040 5 S hut-o[...]

P/N 472032 Rev . A 1-2-02 32 40 MiniMax NT Standard Heaters Limited W arranty Y our MiniMax NT Standard 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 NT Standard cabinet and combustion chamber , the[...]