Contents
Section 2. Warning and Safety Information .........................................................................
Important Notices .................................................................................................................................................................................
Warranty Information ............................................................................................................................................................................
Code Requirements ..............................................................................................................................................................................
General Specifications .........................................................................................................................................................................
Section 3. Installation .............................................................................................................
Heater Description ................................................................................................................................................................................
Putting the Heater into Service ............................................................................................................................................................
Specifications ......................................................................................................................................................................................
Plumbing Connections ..........................................................................................................................................................................
Valves ..................................................................................................................................................................................................
Manual By-Pass ..................................................................................................................................................................................
Water Connections ...............................................................................................................................................................................
Below Pool Level Installation ................................................................................................................................................................
Gas Connections .................................................................................................................................................................................
Sediment Traps ....................................................................................................................................................................................
Gas Pipe Sizing ...................................................................................................................................................................................
Outside Vent Cover Removal ..............................................................................................................................................................
Vertical Venting - Negative Pressure .................................................................................................................................................. 21 - 23
Connecting Special Gas Venting ........................................................................................................................................................ 24 - 26
Garage or Utility Room Installation .....................................................................................................................................................
Control Panel Indexing .......................................................................................................................................................................
Final Installation Check .......................................................................................................................................................................
Electrical Connections ........................................................................................................................................................................
MasterTemp Heater Wiring Diagram ...................................................................................................................................................
Electrical Schematic Ladder Diagram .................................................................................................................................................
Section 4. Operation ...............................................................................................................
Basic System Operation ......................................................................................................................................................................
HSI (Hot-Surface Ignition) Lighting / Operation ...................................................................................................................................
Operating ............................................................................................................................................................................................
To Turn Off Gas to Appliance ..............................................................................................................................................................
Safety Controls ....................................................................................................................................................................................
Initial Troubleshooting and Troubleshooting Chart .................................................................................................................................
Heater Will Not Fire Troubleshooting ....................................................................................................................................................
LED Diagnostics ..................................................................................................................................................................................
Section 6. Maintenance ..........................................................................................................
Care and Maintenance ..........................................................................................................................................................................
Pressure Relief Valve ...........................................................................................................................................................................
After Start-Up ......................................................................................................................................................................................
Spring, Fall and Winter Operation .........................................................................................................................................................
Maintaining Pool Temperature ...............................................................................................................................................................
Energy Saving Tips ..............................................................................................................................................................................
Chemical Balance ................................................................................................................................................................................
Replacement Parts ..............................................................................................................................................................................
Rev. N 10/2018
MASTERTEMP Pool and Spa Heater Installation and User's Guide
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