Pentair MASTERTEMP 125 Installation And User Manual
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Pentair MASTERTEMP 125 Installation And User Manual

Pentair MASTERTEMP 125 Installation And User Manual

High performance heater
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MASTERTEMP
HIGH PERFORMANCE HEATER
INSTALLATION AND USER'S GUIDE
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.
FOR YOUR SAFETY - This product must be installed and serviced by authorized personnel, qualified inpool/spa
heater installation. Improper installation and/or operation can create carbon monoxide gas and flue gases which can
cause serious injury, property damage, or death. For indoor installations, as an additional measure of safety, Pentair
Aquatic Systems strongly recommends installation of suitable Carbon Monoxide detectors in the vicinity of this
appliance and in any adjacent occupied spaces. Improper installation and/or operation will void the warranty.
120/240 VAC NATURAL GAS/LP GAS
Models
125K BTU/HR (without cord)
125K BTU/HR (with cord)
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.
FOR
YOUR
SAFETY
10951 W. Los Angeles Ave., Moorpark, CA 93021
125
®
Natural
Propane
461058
461060
461059
461061
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 Water Pool and Spa, Inc.
1620 Hawkins Ave., Sanford, NC 27330
(800) 831-7133 or (919) 566-8000
•
(800) 831-7133 or (805) 553-5000
•
OWNER:
Retain For
Future
Reference

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  • Page 1 Improper installation and/or operation can create carbon monoxide gas and flue gases which can cause serious injury, property damage, or death. For indoor installations, as an additional measure of safety, Pentair Aquatic Systems strongly recommends installation of suitable Carbon Monoxide detectors in the vicinity of this appliance and in any adjacent occupied spaces.

  • Page 2: Section 1. Heater Identification Information

    3) Fuel Type : (LP = Propane gas or NA = Natural gas) 4) Construction : (STD = Standard Model) HEATER IDENTIFICATION INFORMATION — (HIN) H. I. N. HEATER IDENTIFICATION NUMBER ID DESIGNATOR FOR PENTAIR AQUATIC SYSTEMS MASTERTEMP 125 HEATER ® Example: CONSTRUCTION = STD = STANDARD MODEL...

  • Page 3: Section 2. Warning And Safety Information

    40 PVC pipe. The heater also comes equipped with the Pentair multifunction temperature controller which shows, at a glance, the proper functioning of the heater. All MasterTemp 125 heaters are designed with a direct ignition device, HSI (hot-surface ignition), which eliminates the need for a standing pilot. The heater requires an external power source (120/240 VAC 60 Hz) to operate.

  • Page 4: Code Requirements

    Section 2. Warning and Safety Instructions CODE REQUIREMENTS Installation must be in accordance with all local codes and/or the latest edition of the National Fuel Gas Code, ANSI Z223.1 and the latest edition of the National Electrical Code, NFPA 70 (US). Installation in Canada must be in accordance with the latest CAN/CGA-B149.1 or .2 and CSA C22.1 Canadian Electric Code, part 1.

  • Page 5: Warning - For Your Safety

    If used outdoors, install far from open windows, doors, vents and other openings. • Pentair strongly recommends that all vents, pipes and exhaust systems be initially and periodically tested for proper operation. This testing can be accomplished by using a hand-held carbon monoxide meter and/or by consulting with a gas professional.
  • Page 6 Do not attempt to alter the rated input or type of gas by changing the orifice. If it is necessary to convert to a different type of gas, consult your Pentair dealer. Serious malfunction of the burner can occur which may result in loss of life.

  • Page 7: Consumer Information And Safety

    When such locations cannot be avoided, it is recommended that a suitable drain pan, adequately drained, be installed under the heater. The pan must not restrict air flow. MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...

  • Page 8: Table Of Contents

    Horizontal or Vertical Venting - Positive Pressure ..........................Connecting Special Metalic Gas Venting ............................. 25 - 26 Outdoor Shelter Vent Installation ................................Garage or Utility Room Installation ............................... Control Panel Positioning ..................................Final Installation Check ..................................MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...
  • Page 9 Electrical Connections ....................................... Heater Bonding ....................................Fireman’s Switch Connection/Remote Control Connections ........................ MasterTemp 125 Heater Terminal Board/Control and Connection Wiring Diagram ................Electrical Schematic Ladder Diagram ..............................Connecting the MasterTemp Heater to the IntelliCenter Control System Load Center via RS-485 ..............

  • Page 10: Section 3. Installation

    Section 3. Installation Instructions Section 3: Installation Instructions HEATER DESCRIPTION Figure 1 is a diagram of the heater showing how it operates. Blower Precisely matched orifice plates meter the air and gas into the mixer. The blower draws the air and gas through the mixer and forces it into Mixer the burner’s flame holder.

  • Page 11: Specifications

    ELECTRICAL CONDUIT PORT 29.43" 21" 74.76 53 cm 17.5" 44.5cm 10.87" 28.cm FRONT VIEW TOP VIEW 23" 58.4cm 10.87" 27.6cm 5.5" 14cm EXHAUST SIDE VIEW PLUMBING SIDE VIEW Figure 2. MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...

  • Page 12: Plumbing Connections

    If you are using a flexible corrugated hose for above ground systems, use only Pentair approved flexible hose kits: P/N 155151 (6 ft.) and P/N 155005 (12 ft.).

  • Page 13: Multiple Heater Installation

    TO POOL TO POOL TO POOL TO POOL but help with system INLET FROM balancing OUTLET TO POOL PUMP/FILTER Figure 6. Four MasterTemp® 125 Heaters Plumbing Hydraulic Diagram MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...

  • Page 14: Valves

    Section 3. Installation Instructions 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-siphoning. Back-siphoning is most likely to occur when the pump stops, creating a pressure-suction differential.

  • Page 15: Automatic By-Pass

    See instructions for Automatic Bypass valve kit (P/N XXXXX) for setting the open and closed position of the IntelliValve. WARM WATER OUT CHECK VALVE COLD WATER HOT WATER OUT TO POOL INTELLIVALVE VALVE Figure 7a. COLD WATER IN MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...

  • Page 16: Gas Connections

    Section 3. Installation Instructions 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.

  • Page 17: Gas Combustion Analyzer Probe Testing

    The use of Flexible Connectors (FLEX) is NOT recom- NATURAL AND PROPANE: mended unless they are properly sized according to MAXIMUM INLET: 14 INCHES W.C. the supplier recommendations for the heater rating. MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...

  • Page 18: Outdoor Installation (Us And Canada) / Heater Clearances

    Section 3. Installation Instructions OUTDOOR INSTALLATION (U.S. and Canada) For heaters located outdoors, using the built-in stackless venting system. WARNING Risk of explosion if a unit burning propane gas is installed in a pit or other low spot. Propane is heavier than air. Do not install the heater using propane in pits or other locations where gas might collect.

  • Page 19: Outdoor Installation Venting Guidelines

    400° F (204° C). The total length of the horizontal run must not exceed the length that is listed in Table 4 on page 21. MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...

  • Page 20: Heater Clearances - General Requirements (Indoor Installation For Us Or Outdoor Shelter For Canada)

    Section 3. Installation Instructions HEATER CLEARANCES — General Requirements INDOOR INSTALLATION (U.S.) OR OUTDOOR SHELTER (CANADA) The following clearances must be maintained from combustible surfaces: (*) For service access, it is advisable to allow for 15 cm TOP.......6 in. (15 cm) sufficient clearance on at least one door panel.

  • Page 21: Direct Air Intake Exhaust Duct Using 3-Inch Pvc Pipe (Indoor Installation) / Corrosive Vapors And Possible Causes

    Glues and cements, construction adhesives, paints, varnishes, and New construction and paint and varnish strippers. Waxes and remodeling areas cleaners containing calcium or sodium chloride. Table 5. MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...

  • Page 22: Vent Installation (Indoor Installation For U.s. Or Outdoor Shelter For Canada)

    Section 3. Installation Instructions VENT INSTALLATION – INDOOR INSTALLATION (U.S.) OR OUTDOOR SHELTER (CANADA) (Category I) NOTE *: Vent must be at least eight (8) feet away from nearest vertical surface. Vents extending five (5) feet or Always vent the heater to the outdoors, see Note*. more above the roof must be braced or guyed.
  • Page 23 Dispose Condensate of condensate Drain w/trap according to local codes. Typical Metal Vent Pipe Installation - Figure 19. – Canada (Vertical – Negative Pressure) MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...
  • Page 24 Section 3. Installation Instructions 4. Install vent pipe so that it can expand and contract freely as the temperature changes. Support the vent pipe according to applicable codes and the vent manufacturer’s instructions. Pipe support must allow the vent pipe free movement out and back, from side to side, or up and down as necessary, without putting a strain on the heater or vent body.

  • Page 25: Horizontal Or Vertical Venting - Positive Pressure

    Repeat for the exterior of the heater end of the Appliance Adapter. Attach the appliance adapter to the vent body using the adhesive specified by the vent manufacturer, following the vent manufacturer’s instructions. MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...
  • Page 26 Section 3. Installation Instructions WARNING Risk of carbon monoxide poisoning if adapter is improperly attached. Mechanical connections (such as screws) can cause cracking and leaks in the adapter. Do NOT drill holes or use screws to connect the appliance adapter to the heater vent body. Attach with manufacturer’s specified adhesive.
  • Page 27 Fire Hazard. Do not run the heater vent into a common Clearance vent with any other appliance. Do not run the Special Gas Vent into, through, or within any active vent such Figure 23. MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...

  • Page 28: Outdoor Shelter Vent Installation

    Section 3. Installation Instructions OUTDOOR SHELTER INSTALLATION In Canada, this pool heater can only be installed outdoors or in an enclosure that is not normally occupied and has no direct openings into occupied areas. WARNING Risk of asphyxiation if exhaust is not correctly vented. Follow venting instructions exactly when installing heater. Do not use a draft hood with this heater, as the exhaust is under pressure from the burner blower and a draft hood will allow exhaust fumes to blow into the room housing the heater.

  • Page 29: Control Panel Positioning

    Installation of the anchor clamps are recommended in all installations and are required in Florida, (See Florida Building Figure 26. Code 301.13). See Figure 26. MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...

  • Page 30: Section 3. Operation (Continued)

    CAUTION All heaters ship from the Factory with a 240V plug installed (exception: MasterTemp 125 heaters are pre-corded heaters that ship from the Factory with a 120V plug installed). Installing the 120V plug and then connecting the heater to 240V line current will immediately destroy the transformer, control board and ignition control module, and will void warranty.

  • Page 31: Heater Bonding

    The heater, when installed, must be electrically grounded and bonded in accordance with local codes or, in the absence of local codes, with the National Electrical Code or the Canadian Electrical Code (as applicable). BONDING Figure 28. MasterTemp Heater (Exhaust Side) MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...

  • Page 32: Fireman's Switch Connection/Remote Control Connections

    Section 3. Installation Instructions CAUTION If, while there is line voltage connected to the heater, you touch either line voltage terminal with any 24VAC wire that is connected to the control board (including the Fireman’s Switch jumper), you will immediately destroy the control board and void the warranty.

  • Page 33: Connecting The Mastertemp Heater To The Intellicenter Control System Load Center Via Rs-485

    RS-485 wires MasterTemp Heater (Exhaust Side) Figure 31. Figure 32. MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...

  • Page 34: Connecting The Rs-485 Cable From The Heater To The Load Center

    Section 3. Installation Instructions Connecting the RS-485 Cable from the Heater to the Load Center To connect the MasterTemp heater to the load center: BEFORE REMOVING THE HIGH VOLTAGE COVER PANEL FROM THE LOAD CENTER OR POWER CENTER ENCLOSURE SWITCH OFF THE POWER AT THE HOUSE MAIN CIRCUIT BREAKER BOX.
  • Page 35 9. Secure the panel with the two (2) retaining screws. Close the front door and secure with the latch. See Figure 33 on page 34. 10. SWITCH ON AC power to the IntelliCenter Control System Load Center. MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...

  • Page 36: Heater Wiring Diagram

    Section 3. Installation Instructions HEATER WIRING DIAGRAM (3-WIRE SYSTEM) Figure 35.

  • Page 37: Heater Electrical Schematic Ladder Diagram

    Section 3. Installation Instructions HEATER ELECTRICAL SCHEMATIC LADDER DIAGRAM BYPASS VALVE 4.) EXTERNAL VALVE THAT NEEDS TO BE INSTALLED. Figure 36. MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...

  • Page 38: Section 4. Operation

    Section 4. Operation Instructions Operation Instructions BASIC SYSTEM OPERATION Start pump, make sure the pump is running and is primed, to close the water pressure switch and supply power to heater. Be sure the pool and/or spa is properly filled with water. Follow the Lighting/Operating instructions below. HEATER HSI ELECTRONIC IGNITION LIGHTING/OPERATION FOR YOUR SAFETY: READ BEFORE LIGHTING WARNING If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life.

  • Page 39: Operating Instructions

    3. Remove the access door panels, see Figure 37. 4. Toggle-Style Valve: Pull toggle toward you to turn gas off, see Figure 38. MANUAL SHUT-OFF VALVE LOCATION 5. Replace the Access Door Panels. MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...

  • Page 40: Safety Controls/Air Flow Switch (Afs)

    Section 4. Operation Instructions SAFETY CONTROLS AIR FLOW SWITCH (AFS) The air flow switch, (see Figure 41), is a safety device used to insure that the combustion air blower (fan) is operating and has been designed to monitor the vacuum (negative) pressure within the blower housing.

  • Page 41: Operation Of Ignition Module (Icm)

    (some filters may require back-washing). If the message remains on after the filter/skimmers have been serviced, the system should be checked by a qualified service technician. MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...

  • Page 42: Control Panel

    Section 4. Operation Instructions CONTROL PANEL Pool/Spa LCD Temperature Toggle Button Display Control Panel Description The LCD displays two lines of text. During LCD Display: normal heater operation the current pool or spa water temperature is shown on line 1 of the display. The heater set point for the pool or spa is shown on line 2 of the display.

  • Page 43: Menu

    When the BYPASS VALVE feature is disabled, there is no automatic switching of the by-pass valve when the heater starts a heating cycle. The valve stays in the position and water always flows through the heater. English, Spanish or French LANGUAGE: View the current heater firmware version. VERSION: MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...

  • Page 44: Section 5. Troubleshooting

    Section 4. Operation Instructions Troubleshooting Initial Troubleshooting Only qualified, trained service technicians with appropriate test equipment should service the heater. Remember that all parts of the system affect heater operation. Before starting this troubleshooting procedure, make sure that the pump is running correctly, that there are no blockages in the system, that the valves are correctly set and that the time clock is correctly set and is running.

  • Page 45: Initial Troubleshooting

    WARNING Fire and Explosion hazard. WARNING Hazardous voltage. Can shock, burn or kill. Do not jumper Disconnect power before servicing any components. switch terminals to remedy a failed safety switch. MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...

  • Page 46: Heater Will Not Fire - A

    Section 5. Troubleshooting Heater Will Not Fire - A Start Press Pool/Spa button on Heater should fire on demand Is POOL or SPA for heat. pad. Does POOL or SPA displayed on the LCD? displays on LCD? Check that correct 12-pin Check for line voltage to Restore power to heater.

  • Page 47: Heater Will Not Fire - B

    Flow (min/Max) 20 gal/min (70 GPM) Check if any of the other Go to “Diagnostic. (Pages 49 and 50) Alarms are activated. Go to ALARMS Diagnostics (Pages 49 and 50) MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...

  • Page 48: Ign Is On

    Section 5. Troubleshooting IGN is ON ALARMS: AGS, AFS, HLS, PS, E01 or 126 Gas flow during ignition and Verify connection to HSI igniter, burner fire for less than 7 seconds. HSI is not broken, flame current status. Gas flow during ignition try, but burner does not fire.

  • Page 49: Diagnostic Alarms: Err, Ags Or Err Hls

    Verify Thermistor wiring. If EO1 or 126 OK, replace Thermistor. CAUTION Do not jumper a safety switch to NOTE: ES1 is a spare and should be jumpered. remedy a failed switch . MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...

  • Page 50: Diagnostic Alarms: Err Sfs

    Section 5. Troubleshooting Diagnostic Alarms: SFS ERR SFS Check Heat Exchanger Coil for leaks, liming, soot, or low flow. Heater starts and runs OK, but temperature of exhaust climbs to 450°–500° in 3–5 Check Thermal minutes. Regulator: Open at 120°? Replace Heater (HD ) Membrane Pad.

  • Page 51: Burner Troubleshooting

    Heat exchanger plugged. Service heat exchanger. Correct water “bumping” sounds. chemistry. Bypass valve stuck open. Service bypass valve. Thermal governor stuck Replace thermal governor. closed. Sweating. Thermal governor failed. Replace thermal governor. MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...

  • Page 52: Section 6. Maintenance

    Section 6. Maintenance Maintenance Instructions CARE AND MAINTENANCE WARNING Risk of fire or explosion from flammable vapors. Do not store gasoline, cleaning fluids, varnishes, paints, or other volatile flammable liquids near heater or in the same room with heater. The following maintenance is recommended every six months and at the start of every swimming season: 1.

  • Page 53: After Start-Up Checking Water Flow

    1. Connect the INLET and OUTLET unions to the system plumbing. Check that they are connected correctly and there are no water leaks. 2. Before starting the heater, circulate water through the heater for several minutes until all air noises stop. See also “BEFORE START-UP” (page 38) and “CARE AND MAINTENANCE” (page 52). (See additional notes under Important Notices in Introduction.) MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...

  • Page 54: Maintaining Pool Temperature

    Section 6. Maintenance MAINTAINING POOL TEMPERATURE To maintain pool temperature, make sure that the heater switch and valves are reset to pool settings after using the spa. ENERGY SAVING TIPS 1. Keep the pool or spa covered when not in use. This will reduce heating costs, reduce water evaporation, conserve chemicals and reduce load on the filtering system.

  • Page 55: Water Chemistry Parameters

    Start-up TDS includes source water TDS and any other inorganic salt added at start-up. Table 9. NOTE (**): Failure to adhere to the listed water chemistry parameters may result in premature failure of the heat exchanger and will void the warranty. MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...

  • Page 56: Section 7. Replacement Parts

    (Key Nos. 8 through 9), See Page 58 see Page 59 For complete Electrical System parts breakdown (Key Nos. 1 through 4), See Page 60. Repair Parts are available from your Pentair dealer. If your dealer cannot supply you, call Customer Support at 1-800-831-7133.
  • Page 57 Section 7. Replacement Parts MasterTemp 125 HEATER REPLACEMENT PARTS ® MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...
  • Page 58 Section 7. Replacement Parts MASTERTEMP 125 HEATER REPLACEMENT PARTS ® REPAIR PARTS – BURNER SYSTEM Model Part MT125 NA Qty. MT125 LP Description 42001-0051S Combination Gas Control Valve Kit 3/4" Union 38404-4097S Gas Orifice Gas Orifice O-Ring • Gas Orifice Kit – NG (Incl. Key Nos. 3 and 4)† 474981 •...
  • Page 59 Manifold (*) 5/16" Washer, Stainless Steel (*) 5/16x18x2-3/4" Hex Cap screw (*) 474989 Thermal Regulator Pressure Relief Valve (Recommended (Purchase Separately) 473715Z 474974 1-1/2” Union Kit (*) Not available separately MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...
  • Page 60 Section 7. Replacement Parts MASTERTEMP 125 HEATER REPLACEMENT PARTS ® REPAIR PARTS – ELECTRICAL SYSTEM Part MT125 HD NA & LP Model 125 (NA/LP) Description Qty. (*) International Heater Display Cover 42002-0035 Igniter Bracket 42001-0030S Igniter/Igniter Gasket Kit Incl. Key Nos. 3 and 4) 77707-0054 Igniter Gasket 42001-0066S...
  • Page 61 1620 HAWKINS AVE., SANFORD, NC 27330 • (919) 566-8000 10951 WEST LOS ANGELES AVE., MOORPARK, CA 93021 • (805) 553-5000 All indicated Pentair trademarks and logos are property of Pentair . Third party registered and unregistered trademarks and logos are the property of their respective owners ©...

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