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Type: Posts; User: rspears
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03-04-2020 07:17 AM
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72135 Bob, the heater control valve on VA...
72135
Bob, the heater control valve on VA systems is an electric servo valve controlled by the rotary potentiometer switch on their control panel. I've only installed one VA system, but found...
That looks like a tricky one to do, nice job.
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