Electric/ oil hybrid wiring system
#1
12-13-20, 07:39 AM
Electric/ oil hybrid wiring system
Hi,
I just add a Stelpro SBM duct heater to my Lincoln barrière MBO oil furnace. Does anybody know how to wire these two together? Stelpro give me a plan but the wiring of the furnace dont match mine.
#2
12-13-20, 09:54 AM
Group Moderator
The wiring diagram looks fairly basic.
The thermostat goes to the duct heater. The duct heater controls the furnace.
There is a connection to the blower motor.
Not sure what the HQ sensor is.
The thermostat goes to the duct heater. The duct heater controls the furnace.
There is a connection to the blower motor.
Not sure what the HQ sensor is.
#3
12-13-20, 10:38 AM
Yes the duct heater control the furnace this parts is clear to connect. The hard one is the fan. I got no terminal on my furnace to allow an external item to control it
#4
12-13-20, 12:48 PM
Group Moderator
In your picture is a fan thermostat right on the front of the furnace.
It's connected with red and blue wires. That should be what you are looking for.
There is a possibility that is not a fan thermostat but a limit control.
Check on the wiring diagram for the furnace. It should be posted on an access cover.
It's connected with red and blue wires. That should be what you are looking for.
There is a possibility that is not a fan thermostat but a limit control.
Check on the wiring diagram for the furnace. It should be posted on an access cover.
#5
12-13-20, 01:51 PM
Here's a picture of wiring diagram and few others from the duct heater. The previous other of the duct heater seem's to have installed what's look like a relay connected to a two wire thermostat câble identified has G ans R wire. Thank you for your time. i really apreciate.
#6
12-13-20, 02:20 PM
Group Moderator
Connect the black and blue wires that go to the fan/limit switch to COM and NO on the duct heater.
Either direction.... no polarity.
Either direction.... no polarity.
#8
12-17-20, 06:45 PM
Group Moderator
