P/N 475106 Rev. A 2/2014 MASTERTEMP
™
Pool and Spa Heater Installation and User’s Guide
Contents
Technical Data / Heater Identification Information (HIN) .................................................................................................................................... ii - iii
Code Requirements / References .................................................................................................................................................................... iv
Consumer Information and Safety / Warnings and Safety Instructions / General Specifications............................................................ v - vii
Section 1. Operations ........................................................................................................................... 1
Overview / Important Notices / Warranty Information .................................................................................................................... 1
Operating the Control Panel ............................................................................................................................................................ 2
Operating Instructions / Basic System Operation .......................................................................................................................... 4
Basic System Operation / HSI (Hot-Surface Ignition) Lighting/Operation ................................................................................... 3
Start-up and Operation ..................................................................................................................................................................... 3
Operating Instructions ...................................................................................................................................................................... 4
To Turn Off Gas to Appliance ........................................................................................................................................................... 4
Safety Controls: Air Flow Switch (AFS) / Water Pressure Switch / Height Limit Devices .......................................................... 5
Operation of Ignition Module ........................................................................................................................................................... 6
Temperature Setting / Maximum Temperature Set Point ............................................................................................................... 6
Section 2. Installation Instructions ...................................................................................................... 7
Heater Description................................................................................................................................................................................ 7
Sequence of Operation ......................................................................................................................................................................... 7
Putting the Heater into Service ............................................................................................................................................................ 8
Specifications ...................................................................................................................................................................................... 8
Plumbing Connections .......................................................................................................................................................................... 9
Valves .................................................................................................................................................................................................. 9
Manual By-Pass .................................................................................................................................................................................. 9
Water Connections ............................................................................................................................................................................... 10
Below Pool Installation ......................................................................................................................................................................... 10
Gas Connections ................................................................................................................................................................................. 11
Gas Pipe Sizing ................................................................................................................................................................................... 11
Sediment Trap/Drip Leg ....................................................................................................................................................................... 11
Testing Gas Leaks and Gas Pressure .................................................................................................................................................. 12
Gas Pressure Requirements ................................................................................................................................................................ 12
Outdoor Installation / Heater Clearances .............................................................................................................................................. 13 - 14
Indoor Venting—General Requirements Heater Clearances / Outside Vent Removal ) .......................................................................... 15
Combustion Air Supply / Corrosive Vapors and Possible Causes ..................................................................................................... 16
Vent Installation (Indoor Installation or Outdoor Shelter) - Vertical Venting ........................................................................................ 16-17
Horizontal or Vertical Venting - Using Single-Wall Stainless Gas Vent ............................................................................................. 19
Connecting Single-Wall Stainless Steel Vent to the Heater .............................................................................................................. 20
Horizontal or Vertical Venting Flexible Duct (Flex-Vent) .................................................................................................................... 22
Corrosive Vapors and Possible Causes ................................................................................................................................................ 23
Control Panel Indexing ......................................................................................................................................................................... 23
Final Installation Check ........................................................................................................................................................................ 23
Electrical Connections .......................................................................................................................................................................... 24
Fireman’s Switch Connection/Remote Control Connections .................................................................................................................. 24 - 25
MasterTemp Wiring Diagram / Electrical Schematic Ladder Diagram .................................................................................................... 26 - 27
Section 3. Troubleshooting .................................................................................................................. 28
Initial Troubleshooting and Troubleshooting Chart ................................................................................................................................. 28
Heater Will Not Fire Troubleshooting (A, B, C, D) ................................................................................................................................ 29 - 31
LED Diagnostics (AGS, AFS, HLS, PS Thermistor)............................................................................................................................ 33 - 34
Burner / Heat Exchanger Troubleshooting ............................................................................................................................................ 35
Section 4. Maintenance Instructions.................................................................................................... 36
Care and Maintenance .......................................................................................................................................................................... 36
Pressure Relief Valve ........................................................................................................................................................................... 36
After Start-Up ...................................................................................................................................................................................... 37
Spring, Fall (Autumn) and Winter Operation ........................................................................................................................................ 37
Maintaining Pool Temperature / Energy Saving Tips ............................................................................................................................. 38
Chemical Balance ................................................................................................................................................................................ 38 - 39
Replacement Parts .............................................................................................................................................................................. 40 - 44
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