r7284u wiring

rrob311

Hi everyone. I am replacing my old honeywell r8284 oil control with a new digital r7284u on my beckett forced hot air oil furnace. I have most everything hooked up. On the r8284 there are a couple of yellow leads that come down from the limit switch. One of the wires was hooked up to one of the thermostat leads. The other was just dangling.

My question is, how do I properly connect these limit switch wires to the new r7284u? There is a red limit wire that plugs into the r7284u but I have no idea where to connect it.

My next question is which outputs on this module, if any, have a 24v output so I can wire my new wifi honeywell thermostat.

billtwocase

you must have meant that you are upgrading from a 8184G, and it sounds like you have a Olsen furnace

rrob311

Ya I believe the furnace is an Olsen and the pump is a Beckett.

billtwocase

I never quite understood the added yellow wires, I guess a back up means of high limit controlling the burner. The red wire coming out of the fan/limit will tie into the black on the new control. There will also be a red wire on the new control that need power as well. It would be best to have this done for you

rrob311

Thanks for the reply, while I am not a home HVAC technician, I am certified in Automotive HVAC systems and electrical.

billtwocase

I am sure you are very mechanically inclined, just that a flooded car and a flooded furnace is like night and day. The wiring is pretty cut and dry on those controls. Just read and follow the instructions