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Built for clockwise (CW) rotation
The module’s solid-state design handles the timing for pilot gas initiation and main valve activation
Always verify the orifice size and inlet pressure before changing spring colors
Built-in Pilot Adjustment: Allows technicians to fine-tune the pilot flame to ensure optimal thermocouple millivolt output
Lochinvar & A.O. Smith 100208405 Pressure Switch 320788-702 Built for clockwise (CW) rotationThe Lochinvar & A. O. Smith 100208405 Pressure Switch is a critical safety component designed for high efficiency condensing boilers and commercial water heaters. This OEM replacement pressure switch monitors the pressure differential within the combustion chamber or venting system to ensure safe operation. When the blower motor proof is established, the switch closes its contacts to allow the ignition sequence to proceed. If a blocked flue or
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