MASTERTEMP
125 Pool and Spa Heater Installation and User’s Guide 460906 Rev. D 8/2020
8
P/N 460906 Rev. D 8/2020
Contents
Heater Identification Information ........................................................................................... 2
Warning and Safety Information ............................................................................................ 3
Important Notices ........................................................................................................................................... 3
Warranty Information ...................................................................................................................................... 3
Code Requirements ........................................................................................................................................ 4
Consumer Information and Safety Information ............................................................................................... 4 - 8
General Specifications .................................................................................................................................... 9
Section 1. Installation Instructions ........................................................................................ 10
Heater Description .......................................................................................................................................... 10
Sequence of Operation ................................................................................................................................... 10
Putting the Heater into Service ....................................................................................................................... 10
Specifications ................................................................................................................................................. 11
Plumbing Connections .................................................................................................................................... 12
Water Connections ......................................................................................................................................... 12
Multiple Heater Installation ............................................................................................................................. 13
Valves ............................................................................................................................................................. 14
Manual By-Pass ............................................................................................................................................. 14
Below Pool Level Installation .......................................................................................................................... 14
Automatic By-Pass ......................................................................................................................................... 15
Gas Connections ............................................................................................................................................ 16
Sediment Traps ............................................................................................................................................. 16
Testing Gas Leaks and Pressure / Inlet Gas Pressure Requirements ........................................................... 17
Outdoor Heater Installation (Australia) .......................................................................................................... 18
Heater Clearances - Outdoor (Installation Venting Guidelines) ..................................................................... 19-20
Indoor Venting — General Requirements ....................................................................................................... 21
Heater Clearances — General Requirements .............................................................................................. 21
Outside Vent Cover Removal ......................................................................................................................... 21
Vent Installation (Indoor Installation or Outdoor Shelter) ................................................................................ 22
Vertical Venting (maximum elbows) ............................................................................................................... 22-25
Horizontal Venting .......................................................................................................................................... 26
Horizontal or Vertical Venting - Using Single-Wall Stainless Gas Vent ......................................................... 27
Connecting Single-wall Stainless Steel Vent to the Heater ........................................................................ 28-29
Horizontal or Vertical Venting Flexible Duct (Flex-Vent) ................................................................................ 30
Combustion Air Supply ................................................................................................................................... 31
Direct Air Intake Exhaust Duct using 7.62 cm (3 in) PVC Pipe (Indoor Installation) ....................................... 32
Control Panel Positioning ............................................................................................................................... 33
Final Installation Check .................................................................................................................................. 33
Contents
Customer Service
If you have questions about ordering Pentair replacement parts, and pool products, please use the following
contact information.
Customer Service and Technical Support, AUS (9 AM - 5PM, Mon - Fri, Australia Wide)
Phone: 1300 137 344
- Fax: 1800 006 668
New Zealand (9 AM - 5PM, Mon - Fri, NZST) Phone: 0800 654 112 - Fax: 0800 806 642
National Dealer Locator - Phone: 1 800 664 266
au.sales@pentair.com
- www.pentair.com.au
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