I am in the process of installing a heater bypass valve on my heater so that I can keep circulation going to my computers temperature sensor when I have the heat turned off.
I purchased a 95 ford ranger heater bypass valve but didn't like the way the vacuum actuator was set up. It was set up so with vacuum off hot water would circulate through the heater and with vacuum applied it would pypass the heater and circulate over the temp sensor.
I would rather have no circulation through the heater with no vacuum so I flipped the vacuum actuator 180 degrees and made an extension to the vacuum actuator linkage. Now without vacuum the hot water is not going to my heater.
I found a small 12volt solenoid at my local pick and pull and have wired it to my heater fan rotary switch.
Now when I turn on the heater fan it activates the solenoid and allows vacuum to open the circulation to my heater. When my fan is switched off the solenoid bleeds the vacuum off and the circulation is closed off to my heater but continues over the temp sensor.
I purchased a 95 ford ranger heater bypass valve but didn't like the way the vacuum actuator was set up. It was set up so with vacuum off hot water would circulate through the heater and with vacuum applied it would pypass the heater and circulate over the temp sensor.
I would rather have no circulation through the heater with no vacuum so I flipped the vacuum actuator 180 degrees and made an extension to the vacuum actuator linkage. Now without vacuum the hot water is not going to my heater.
I found a small 12volt solenoid at my local pick and pull and have wired it to my heater fan rotary switch.
Now when I turn on the heater fan it activates the solenoid and allows vacuum to open the circulation to my heater. When my fan is switched off the solenoid bleeds the vacuum off and the circulation is closed off to my heater but continues over the temp sensor.