Pentair MASTERTEMP 125 Installation And User Manual

MASTERTEMP
®
125 Pool and Spa Heater Installation and User’s Guide Rev. B 8/14
34
SAFETY CONTROLS
AIR FLOW SWITCH (AFS)
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WATER PRESSURE SWITCH
WARNING
Hazardous pressure. Do not bypass the Water Pressure Switch or render
it inoperable.
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HIGH LIMITS
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Air Flow Switch
Section 4. Operation Instructions
Water
Pressure
Switch
Figure 29.
Star Wheel
A reference scale is on
the back of pressure switch
Turn star wheel clockwise to raise
pressure set point if pressure switch is
more than 4 feet (1.2M) below water level
Turn star wheel counterclockwise to lower
pressure set point if pressure switch is more
than 5 feet (1.5M) above water level
Figure 30.
Figure 28.
Figure 29.

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