Pentair MASTERTEMP 125 Installation And User Manual

Rev. B 8/14 MASTERTEMP
®
125 Pool and Spa Heater Installation and User’s Guide
3
Contents
6HFWLRQ+HDWHU,GHQWL¿FDWLRQ,QIRUPDWLRQ ......................................................................... 4
6HFWLRQ:DUQLQJDQG6DIHW\,QIRUPDWLRQ .......................................................................... 5
Important Notices ................................................................................................................................................................................. 5
Warranty Information ............................................................................................................................................................................ 5
Code Requirements .............................................................................................................................................................................. 6
Consumer Information and Safety Information ..................................................................................................................................... 6 - 9
General Specifications .......................................................................................................................................................................... 9
Section 3. Installation .............................................................................................................. 10
Heater Description ................................................................................................................................................................................ 10
Putting the Heater into Service ............................................................................................................................................................. 10
Specifications ....................................................................................................................................................................................... 11
Plumbing Connections .......................................................................................................................................................................... 12
Valves ................................................................................................................................................................................................... 12
Manual By-Pass ................................................................................................................................................................................... 12
Water Connections ............................................................................................................................................................................... 13
Below Pool Installation ......................................................................................................................................................................... 13
Gas Connections .................................................................................................................................................................................. 14
Sediment Traps ................................................................................................................................................................................... 14
Gas Pipe Sizing .................................................................................................................................................................................... 15
Testing Gas Pressure/Gas Pressure Requirements ............................................................................................................................. 15
Outdoor Installation (US and Canada) / Heater Clearances ................................................................................................................ 16
Outdoor Installation Venting Guidelines .............................................................................................................................................. 17
Indoor Venting — General Requirements (Category I and Category III requirements) ...................................................................... 17
Heater Clearances — General Requirements (Indoor Installation for US or Outdoor Shelter for Canada) ....................................... 18
Outside Vent Cover Removal ............................................................................................................................................................... 18
Combustion Air Supply ......................................................................................................................................................................... 18
Direct Air Intake Exhaust Duct using 3-inch PVC Pipe (Indoor Installation) / Corrosive Vapors and Possible Causes ........................ 19
Vent Installation (Indoor Installation for U.S. or Outdoor Shelter for Canada) ...................................................................................... 20
Vertical Venting - Negative Pressure ................................................................................................................................................... 20 - 22
Horizontal or Vertical Venting - Positive Pressure ............................................................................................................................... 23
Connecting Special Gas Venting .......................................................................................................................................................... 23 - 25
Outdoor Shelter Vent Installation .......................................................................................................................................................... 26
Garage or Utility Room Installation ....................................................................................................................................................... 26
Control Panel Indexing ......................................................................................................................................................................... 27
Final Installation Check ........................................................................................................................................................................ 27
Electrical Connections .......................................................................................................................................................................... 28
Fireman’s Switch Connection/Remote Control Connections ................................................................................................................ 29
MasterTemp® 125 Heater Wiring Diagram ........................................................................................................................................... 30
Electrical Schematic Ladder Diagram .................................................................................................................................................. 31
Section 4. Operation ................................................................................................................ 32
Basic System Operation ....................................................................................................................................................................... 32
HSI (Hot-Surface Ignition) Lighting/Operation ...................................................................................................................................... 32
Operating ............................................................................................................................................................................................. 33
To Turn Off Gas to Appliance ................................................................................................................................................................ 33
Safety Controls ..................................................................................................................................................................................... 34 - 36
Section 5. Troubleshooting .................................................................................................... 37
Initial Troubleshooting and Troubleshooting Chart ............................................................................................................................... 38
Heater Will Not Fire Troubleshooting .................................................................................................................................................... 39 - 42
LED Diagnostics ................................................................................................................................................................................... 43 - 44
Burner / Heat Exchanger Troubleshooting ........................................................................................................................................... 45
Section 6. Maintenance ........................................................................................................... 45
Care and Maintenance ......................................................................................................................................................................... 46
Pressure Relief Valve ........................................................................................................................................................................... 45
After Start-Up ........................................................................................................................................................................................ 46
Spring, Fall and Winter Operation ........................................................................................................................................................ 46
Maintaining Pool Temperature .............................................................................................................................................................. 47
Energy Saving Tips ............................................................................................................................................................................... 48
Chemical Balance ................................................................................................................................................................................. 47 - 48
Replacement Parts ............................................................................................................................................................................... 49 - 53

Pentair MASTERTEMP 125 Specifications

General

BTU Output	125, 000 BTU/hr
Fuel Type	Natural Gas or Propane
Ignition System	Electronic
Minimum Flow Rate	20 GPM
Maximum Working Pressure	50 PSI
Efficiency	82%
Water Connections	1.5 inch
Certifications	ANSI Z21.56
Voltage	120V