need help with BRC-10 furnace
Hi, My BRC-10 furnace lights and gives heat but is only controllable by turning heater knob up then down once warm, then up again. Its in a 1978 Scamper. I know it's old but the furnace works very w...
Forum Discussion
daveinarmstrong wrote:
I found a used Honeywell VR8200H 1236 gas valve converted to propane. The pilot works and the valve has nice solid click when i apply 12vdc, but no gas to the burner.
That valve is for a HOME FURNACE..
MODERN HOME FURNACES TYPICALLY USE 24V AC to operate the gas valve!!
SEE HERE
per link above..
"Product Specifications
Application: Single Stage
Voltage: 24 Vac
Frequency: 60Hz
Electrical Connections: Combination screw and 1/4 in. male quick connects
Temperature Range : 0 F to 175 F
Body Pattern: Straight-through
Opening Characteristics: Slow Opening
Pressure Ratings (psi): 1/2
Inlet/Outlet Size (in.): 1/2 x 1/2
Side Outlet: N
Pilot Gas Outlet: Compression fitting for 1/4 in. OD tubing
Pressure Tapping: 1/8 in. NPT with plug
Setpoint (in. wc): 3.5 in. wc
Ignition Type: Standing Pilot
Anticipator Setting: 0.5 A"
Try applying 24V AC and see what happens.
There is no way that valve can be made to operate on 12V DC..
You really NEED what is called a "milli-volt" gas valve.. That IS what your original valve was and older home furnaces at one time used millivolt gas valves.. They were also were called "self generating" since the thermopile flame probe generated a tiny voltage (500 millivolts to 750 millivolts)which was used to open the gas valve and did not require external voltage.
HERE is an example of a millivolt gas valve..
