Chrisexv6
Member
I have a Oneida/Royal LOB oil fired furnace with a direct drive blower. At some point, an AC tech bumped the blower speed to high, because there wasnt enough air flow. Now, Im thinking it was set for heating speed, which is supposed to be different than cooling speed (of course)
Id like to set it back to a lower heating speed so the furnace will run longer, more efficient, more comfortable (I hate forced hot air! but I dont have a choice)
Looking at the schematic Im not 100% positive what wire needs to be connected to the "speed lead" for the blower. The blower has 3 speed settings, using a red/blue/black lead. I see a yellow coming off the fan control going to a main junction box. From that box a yellow, black and white come into the blower junction box. White to white, obviously. Schematic shows Black to Blue on blower motor, and Yellow to Black on Blower motor.
My question is......which lead needs to be changed to get to a lower fan speed? Or, exactly which lead CONTROLS the fan speed.......is it the yellow from the Fan/Limit control?
If this is clear as mud, I apologize. Ill try to get a pic/scan of the schematic if necessary.
Thanks in advance.
-Chris
Id like to set it back to a lower heating speed so the furnace will run longer, more efficient, more comfortable (I hate forced hot air! but I dont have a choice)
Looking at the schematic Im not 100% positive what wire needs to be connected to the "speed lead" for the blower. The blower has 3 speed settings, using a red/blue/black lead. I see a yellow coming off the fan control going to a main junction box. From that box a yellow, black and white come into the blower junction box. White to white, obviously. Schematic shows Black to Blue on blower motor, and Yellow to Black on Blower motor.
My question is......which lead needs to be changed to get to a lower fan speed? Or, exactly which lead CONTROLS the fan speed.......is it the yellow from the Fan/Limit control?
If this is clear as mud, I apologize. Ill try to get a pic/scan of the schematic if necessary.
Thanks in advance.
-Chris