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Sticker on the pump body (the part with the basket), not on the motor. Motor labels from Century, A.O. Smith or Regal won't match parts.
Label on the side of the tank near the base. Size is in sq ft, e.g. 420 sq ft = C4030 or CCP420.
Rating plate inside the front access panel. Note the BTU and gas type (NG or LP).
Molded into the body or printed on top. Robotic cleaners: on the power supply.
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Pentair Air Flow Switch For MasterTemp And Max-E-Therm Heaters | 42001-0061S
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Goes with this part
CA P65 Warning: Cancer and reproductive harm. www.p65warnings.ca.gov
On the Pentair MasterTemp 125 461059 Heater diagram
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Other parts on the same Pentair MasterTemp 125 461059 Heater
The OEM Pentair air flow switch (AFS), which senses the pressure drop across the air metering orifice. The air flow switch (AFS) senses the pressure drop across the air metering orifice. As soon as there is sufficient air flow, the AFS closes, closing the circuit to the hot surface igniter (HSI), which ignites the fuel mixture. On a call for heat, the blower and HSI are energized. In about 20 seconds, the gas valve opens and ignition occurs. The HSI then switches to a sensing mode and monitors the flame.
- Crucial Sensing Capability: Senses the pressure drop across the air metering orifice, ensuring proper air flow for ignition.
- Automatic Circuit Closure: Closes the circuit to the hot surface igniter (HSI) as soon as there is sufficient air flow, igniting the fuel mixture.
- Efficient Heat Call Response: On a call for heat, simultaneously energizes the blower and HSI, leading to gas valve opening and ignition within about 20 seconds.
- Flame Monitoring: After ignition, the HSI switches to sensing mode to monitor and ensure the stability of the flame.
- Essential for Functionality: A critical component for the reliable operation and safety of your heating system, maintaining consistent and efficient heating performance.
- (1) Air Flow Switch
- (1) Clip
- (2) Clear Tubes
- (2) Bolts
- Compatible with most Pentair MasterTemp and Max-E-Therm Heaters
