Propane pressure for old Williams cabin heater
user-389891
| Posted in Energy, Heating & Insulation on
I have a ‘normal’ appliance connection between my propane outlet and the heater. An a/c guy suggested if I put in a bigger diameter connection to the heater I may get more propane and therefore more heat. Is this reasoning correct or will the propane tank and connection provide all the propane I could use (which is metered by the heater)?
I had some earlier questions about installing a Nest. The problem is that my Williams uses millivolts which isn’t compatible with the Nest 24 volt.
Replies
did this ac guy look at the installation?
You still can use the NEST if you get a relay.
what is a relay
https://www.google.com/search?q=what+is+a+relay
Your milivolt system turns on the gas when the wires are connected together.
You can use a switch for this purpose, or use a milivolt thermostat, which is a temperature-controlled switch.
A relay is an electrically-operated switch. If you were so inclined, you could use your transformer, the nest thermostat, and a 24 volt ac coil relay to operate the furnace. You would use the normally open contacts on the relay (that connect to each other when voltage is applied to the relay coil) to connect to the milivolt burner valve in the heater.
Your propane supply hose may be an issue if it is not providing enough pressure and flow to the furnace. A technician with proper tools could verify this.
The propane service includes a tank, a regulator (which reduces and controls the pressure) and then low pressure propane lines to the furnace. A technician could verify the pressure at the furnace when the furnace is running, to identify enough pressure.
What do you mean by "normal" for the gas line?
gas lines are sized to allow the gas to flow. one way is to start with the BTU rating of the furnace, and the distance (length) of pipe from the propane regulator at the tank to the furnace.
https://www.edcgov.us/Government/building/documents/Gas%20Pipe%20Sizing%20%28Propane%29.pdf is a good place to start.