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

Pool and spa heater (euro)
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MASTERTEMP
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 USA (800) 831-7133.
FOR YOUR SAFETY - This product must be installed and serviced by authorized personnel, qualified in pool/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
Water Pool and Spa 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.
Models
Natural Gas
(240 VAC)
(G20 , G25)
MT125, EURO
461078
MT125HD, EURO
460902
NOx CLASS 5
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
•
If you do not follow these instructions exactly, a fire or explosion may result, causing property
damage, personal injury or loss of life.
•
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.
•
Do not place articles or against this appliance.
•
Do not use or store flammable materials near this appliance.
•
Do not spray aerosols in the vicinity of this appliance while it is in operation.
FOR
YOUR
SAFETY
Pentair Water Pool and Spa, Inc. EMEA:
Pentair Water Pool and Spa, Inc. USA:
www. pentaireurope.com - www.pentairwater.com.au - www.pentairpool.com - www.staritepool.com
125 POOL AND SPA HEATER (EURO)
™
COUNTRY OF DESTINATION:
Propane Gas
(G31)
GB, BE, FR, DE
461079
460903
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.
Head Office: Industriepark, Wolfstee, Toekomstlaan 30, 2200 Herentals - Belgium.
1620 Hawkins Ave., Sanford, NC 27330, USA • (919) 566-8000 • (800) 831-7133
10951 W. Los Angeles Ave., Moorpark, CA 93021, USA • (805) 553-5000 • (800) 831-7133
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 Water Pool and Spa strongly recommends installation of suitable Carbon Monoxide Detectors in the vicinity of this appliance and in any adjacent occupied spaces.
  • Page 2 Gas Safety Regulations (the installation and use), the above described regulations and the appliance warranty. The manufacturer’s notices DO NOT supersede any legal requirements. MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide P/N 475114 Rev. F 9/2020...

  • Page 3: Heater Identification Information (Hin)

    ELECTRICAL COMPLIANCE: IN ACCORDANCE WITH LOCAL ELECTRICAL CODES. THIS APPLIANCE MUST BE INSTALLED IN ACCORDANCE WITH THE EUROPEAN STANDARD INSTALLATION CODES, AND WITH THE REQUIREMENTS OF THE AUTHORITY HAVING JURISDICTION. Label P/N P/N 475114 Rev. F 9/2020 MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...
  • Page 4 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 MasterTemp 125 heater requires an external power source (240 VAC 50 Hz) to operate.
  • Page 5 6. Persons taking medication which induce drowsiness, such as tranquilizers, antihistamines or anticoagulants should not use spas or hot tubs. P/N 475114 Rev. F 9/2020 MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...
  • Page 6 • The heater may not be installed within 1.5 M (5 ft.) of the inside surface of a pool or spa unless it is separated by a solid fence, wall or other permanent barrier. MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide P/N 475114 Rev. F 9/2020...
  • Page 7 WARNINGS AND SAFETY INSTRUCTIONS The MasterTemp 125 Heater is designed and manufactured to provide many years of safe and reliable service when installed, operated and maintained according to the information in this manual. Throughout this manual, safety warnings and cautions are identified by the “...
  • Page 8 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.

  • Page 9: Table Of Contents

    Spring, Fall (Autumn) and Winter Operation ............................Maintaining Pool Temperature / Energy Saving Tips ........................... Chemical Balance ....................................33 - 34 Replacement Parts ....................................35 - 39 P/N 475114 Rev. F 9/2020 MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...
  • Page 10 THE MASTERTEMP HEATER IS INTENDED FOR INSTALLATION WITH A METERED GAS PRESSURE REGULATOR. 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 11: Specifications

    50 mm (1.5" - UK) FRONT VIEW TOP VIEW 584 mm (23") 28 mm (11") 140 mm (5.5") EXHAUST SIDE VIEW PLUMBING SIDE VIEW Figure 2. MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide P/N 475114 Rev. F 8/2020...

  • Page 12: Plumbing Connections

    Section 1. Installation PLUMBING CONNECTIONS The MasterTemp 125 heater has the capability of direct PVC pipe plumbing connections. A set of bulkhead fittings is included with the MasterTemp 125 heater to insure conformity with Pentair’s recommended PVC plumbing procedure. Other plumbing connections can be used.
  • Page 13 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 P/N 475114 Rev. F 8/2020...

  • Page 14: Valves

    Connect the flow switch wires as used for the water pressure switch. P/N 475114 Rev. F 8/2020 MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...
  • Page 15 See instructions for Automatic Bypass valve kit (P/N 462048) 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 8. COLD WATER IN MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide P/N 475114 Rev. F 8/2020...

  • Page 16: Gas Connections / Gas Line Installation

    9, or an other device recognized as an effective sediment trap. Figure 9. All gas piping should be tested after installation in accordance with European Standard Codes of Practice. P/N 475114 Rev. F 8/2020 MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...

  • Page 17: Testing Gas Leaks And Gas Pressure

    The correct gas regulator setting is required to maintain proper combustion and must NOT be altered. MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide P/N 475114 Rev. F 8/2020...

  • Page 18: Outdoor Installation / Heater Clearances

    Bolt Down Bracket bolts and clamps, Kit, P/N 460738, see Figure 12. purchase separately Bolt Down Bracket Kit, Part No. 460738. Lead Anchor Figure 12. P/N 475114 Rev. F 8/2020 MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...
  • Page 19 Figure 14. The heater must also have no obstructions above it. MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide P/N 475114 Rev. F 8/2020...
  • Page 20 The heater is supplied from the factory with a built-in stackless outside vent for outdoor installation. Remove the outside vent cover for outdoor shelter installation. Outlet Air Opening P/N 475114 Rev. F 8/2020 MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...

  • Page 21: Combustion Air Supply / Corrosive Vapors And Possible Causes

    Do not place any insulating materials around the vent or inside the required clear air space surrounding the vent. See Table 20 on page 16 for maximum permissible vent lengths. CONTINUE TO NEXT PAGE. MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide P/N 475114 Rev. F 8/2020...
  • Page 22 20m (65.6 ft.) 6.67m (21.9 ft.) 13.33m (43.7 ft.) 21m (68.9 ft.) 7m (23 ft.) 14m (45.9 ft.) 22m (72.2 ft.) 7.33m (24 ft.) 14.67m (48.1 ft.) P/N 475114 Rev. F 8/2020 MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...

  • Page 23: Connecting Single-Wall Stainless Steel Vent To The Heater

    (Pentair offers optional appliance adapter kits, call Customer Service) - Part No. 77707-0086 for Saf-T Vent or Saf-T Vent CI. - Part No. 77707-0087 for Z-Vent. (UK only). To order this optional adapter kit, please contact Pentair sales at Industriepark, Wolfstee, Toekomstlaan 30, 2200 Herentals - Belgium.
  • Page 24 NOTE: After installation, installer must check for correct and safe operation of the heater. P/N 475114 Rev. F 8/2020 MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...

  • Page 25: Direct Air Intake Duct With 76 Mm (3 In - Uk) Pvc Pipe (Indoor Installation)

    For indoor heater installations where combustion air supply might be insufficient, the MasterTemp 125 Heater is certified for a direct air intake duct using 76 mm (3 in - UK) PVC pipe (Pentair P/N 461031). If outside air is drawn through PVC duct directly into the heater, PVC pipe can be installed in accordance with the following requirements: The air intake opening MUST be installed at least 30.5 cm (12 in) above the roof line or normal snow levels for free...

  • Page 26: Electrical Connections

    15 minutes before shutting off the pump. Always use crimp type connectors when connecting two wires. AC Plug 240 Volt (Red wires, Top plug) Figure 23. P/N 475114 Rev. F 8/2020 MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...
  • Page 27 Supplies Power to Circulator Pump) Fireman's Switch Completes the heater 24 Volt AC Control Board Circuit. DO NOT connect this circuit to Line Voltage! 24VAC Figure 25. MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide P/N 475114 Rev. F 8/2020...
  • Page 28 National Electrical Code or the Canadian Electrical Code (as applicable). BONDING Figure 26. MasterTemp Heater (Exhaust Side) P/N 475114 Rev. F 8/2020 MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...
  • Page 29 RS-485 wires MasterTemp Heater (Exhaust Side) Figure 27. Figure 28 MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide P/N 475114 Rev. F 8/2020...
  • Page 30 For wiring details, refer to the pin configuration shown below. Note: Multiple conductors may be inserted into a single screw terminal. P/N 475114 Rev. F 8/2020 MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...
  • Page 31 9. Secure the panel with the two (2) retaining screws. Close the front door and secure with the latch. See Figure 29 on page 21. 10. SWITCH ON AC power to the IntelliCenter Control System Load Center. MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide P/N 475114 Rev. F 8/2020...
  • Page 32 Section 1. Installation | 23 HEATER WIRING DIAGRAM (3-WIRE SYSTEM) Figure 31. P/N 475114 Rev. F 8/2020 MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...

  • Page 33: Heater Wiring Diagram / Heater Electrical Schematic Ladder Diagram

    IF ANY OF THE ORIGINAL WIRES AS SUPPLIED WITH THE APPLIANCE MUST BE REPLACED, THEY MUST BE REPLACED WITH TYPE 105° C Figure 32. OR ITS EQUIVALENT. MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide P/N 475114 Rev. F 8/2020...
  • Page 34 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. P/N 475114 Rev. F 8/2020 MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...
  • Page 35 - Turn OFF the outside Manual Shut-Off Valve (Figure 34). Shut-off Valve 3. Remove the access door panels, see Figure 1. 4. Replace the Access Door Panels. Figure 34. OUTSIDE MANUAL SHUT-OFF VALVE LOCATION MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide P/N 475114 Rev. F 8/2020...
  • Page 36 Turn star wheel counterclockwise to lower pressure set point if pressure switch is more than 1.5 m (5 ft) above water level Figure 30. Figure 37. P/N 475114 Rev. F 8/2020 MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...
  • Page 37 (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 P/N 475114 Rev. F 8/2020...
  • Page 38 Press Up/Down to increase or decrease water set point temperature. If the current water temperature is below the Set point water temperature, the heater will begin heating. P/N 475114 Rev. F 8/2020 MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...
  • Page 39 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 P/N 475114 Rev. F 8/2020...

  • Page 40: Section 3. Troubleshooting

    To clear the error the HEATER Follow diagram on page temperature sensor OFF bu�on must be pressed. Shorted water Follow diagram on page temperature sensor P/N 475114 Rev. F 8/2020 MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...
  • Page 41 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 P/N 475114 Rev. F 8/2020...

  • Page 42: Heater Will Not Fire Troubleshooting (A, B, C, D)

    Jumper J6-6 and J6-3. Does the mode toggle between POOL and SPA? Replace Control Board. GO TO “HEATER WILL NOT FIRE - B” Page 34. P/N 475114 Rev. F 8/2020 MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...
  • Page 43 40 gal/min (151 LPM) Check if any of the other Go to “Diagnostic. (Pages 36 and 37) Alarms are activated. Go to ALARMS Diagnostics (Pages 36 and 37). MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide P/N 475114 Rev. F 8/2020...
  • Page 44 NOTE 2: Voltage appears about 24 seconds after Control Module and call for heat, and may be on for only about 7 seconds. Control Board. P/N 475114 Rev. F 8/2020 MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...
  • Page 45 EO1 or 126 OK, replace Thermistor. CAUTION NOTE: ES1 is a spare and should be jumpered. Do not jumper a safety switch to remedy a failed switch. MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide P/N 475114 Rev. F 8/2020...
  • Page 46 (Basic) Clean/tighten pins as DONE needed. Reset power to Heater and DONE retry. Heater should fire. Reset power to Heater and retry. Heater should fire. P/N 475114 Rev. F 8/2020 MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...

  • Page 47: Burner / Heat Exchanger Troubleshooting

    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 P/N 475114 Rev. F 8/2020...

  • Page 48: Section 4. Maintenance Instructions

    Explosion hazard. Any heater installed with restrictive devices in the piping system downstream from the heater, (including check valves, isolation valves, flow nozzles, or therapeutic pool valves), must have a relief valve installed as described above. P/N 475114 Rev. F 8/2020 MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...

  • Page 49: After Start-Up

    2. Before starting the heater, circulate water through the heater for several minutes until all air noises stop. See also “BEFORE START-UP” (page 25) and “CARE AND MAINTENANCE” (page 39). (See additional notes under Important Notices in the introduction of this manual.) MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide P/N 475114 Rev. F 8/2020...

  • Page 50: Maintaining Pool Temperature / Energy Saving Tips

    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. P/N 475114 Rev. F 8/2020 MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...

  • Page 51: Chemical Balance

    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 P/N 475114 Rev. F 8/2020...
  • Page 52 (Key Nos. 8 through 9), see Page 46 Repair Parts are available from your Pentair dealer, or call Customer Support at 1-800-831-7133 US. P/N 475114 Rev. F 8/2020 MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...

  • Page 53: Replacement Parts

    Section 5. Replacement Parts 44 | MasterTemp 125 HEATER REPLACEMENT PARTS MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide P/N 475114 Rev. F 8/2020...
  • Page 54 Screws/Clips Kit, Panel (8 ea. clips & 8 ea. screws) 474292 • Combustion Air Intake Duct Connection Kit CALL Not available separately. Not included with heater. Order separately . P/N 475114 Rev. F 8/2020 MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...
  • Page 55 5/16x18x2-3/4" H ex Cap screw (*) Thermal Regulator 474989 Pressure Relief V alve (Recommended (Purchase Separately) 473715Z 474974 1-1/2” Union Kit (*) Not available separately MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide P/N 475114 Rev. F 8/2020...
  • Page 56 120/240 Volt Plug Kit 42001-0105S Heater, Top 42002-0034Z Membrane Pad (NA, LP Series) 472610Z Stack Flue Sensor 42002-0024S • Not available separately. Kit parts not available separately. P/N 475114 Rev. F 8/2020 MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...
  • Page 57 Stack Flue Sensor 42002-0024S (*) 50Hz, Europe, Austrailia and United Kingdom. (**) Kit Includes: RS 485 control board, RS485 membrane pad and flame current wire. MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide P/N 475114 Rev. F 8/2020...
  • Page 58 | 49 Notes P/N 475114 Rev. F 8/2020 MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide...
  • Page 59 50 | Notes MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide P/N 475114 Rev. F 8/2020...
  • Page 60 All indicated Pentair trademarks and logos are property of Pentair Inc. or its global affiliates in the U.S.A. and/or other countries. Third party registered and unregistered trademarks and logos are the property of their respective owners© 2016 Pentair Water Pool and Spa, Inc.

This manual is also suitable for:

Mastertemp 125 hd461078460902461079460903

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