Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.
Wiring up a RIB relay
STEVEusaPA
Member Posts: 6,505
Seem to be having a brain fart on this...
Want to use a relay (RIBU1C) to prioritize an oil-fired water heater over an oil fired furnace. Both have separate power supplies.
My thinking (see attached) is I wire the 2 red circled leads in series from the power supplied from the aquastat on the water heater. The 2 blue leads wired in series thru the primary control of the furnace.
Is this the right relay? If so, is this the right way to wire this?
Any help or guidance is always appreciated.
Thanks
Steve
Want to use a relay (RIBU1C) to prioritize an oil-fired water heater over an oil fired furnace. Both have separate power supplies.
My thinking (see attached) is I wire the 2 red circled leads in series from the power supplied from the aquastat on the water heater. The 2 blue leads wired in series thru the primary control of the furnace.
Is this the right relay? If so, is this the right way to wire this?
Any help or guidance is always appreciated.
Thanks
Steve
There was an error rendering this rich post.
0
Comments
-
Quick question Steve. Why are you prioritizing the water heater over the furnace? Is there a fuel or draft issue?
0 -
The two reds are the relay coil and the two blues are the normally closed contacts. When the coil is energized, the normally closed contacts will open.
I'm not exactly sure what you mean by "wired in series thru the primary control of the furnace". I would hook the reds in parallel with the burner motor on the water heater and the blues in series with the "line" (black) feeding the primary on the furnace.Bob Boan
You can choose to do what you want, but you cannot choose the consequences.0 -
The Long Island method is to break the TT on heat primary (assuming it has one) with the Blue/YellowTo learn more about this professional, click here to visit their ad in Find A Contractor.0
-
I would also use "T-T". If you wire it in series with the motor, wouldn't there be a potential for it lock out on safety when switching over to the furnace? I might just be over thinking it.0
-
Robert O'Brien said:
The Long Island method is to break the TT on heat primary (assuming it has one) with the Blue/Yellow
That would be my first choice if it has "TT".billtwocase said:I would also use "T-T". If you wire it in series with the motor, wouldn't there be a potential for it lock out on safety when switching over to the furnace? I might just be over thinking it.
Bill,
If the motor is de-energized, power to the RIB coil is broken and the normally closed contacts make, energizing the furnace primary. I can't follow how that would cause a lockout, but maybe you see something that I don't?
Bob Boan
You can choose to do what you want, but you cannot choose the consequences.0 -
Thanks for all the responses. With our first cold snap, I was a little busy to respond/follow up.
@billtwocase...this is a new customer that had not had their 2 appliances serviced in 7 years. Based on how the flue pipes were installed (incorrectly), with two rotted flue pipes jammed into the chimney base, and reading a report on the tag about 'poor draft', I was concerned.
I was able to redo the flue pipes correctly, use a wye in place of a tee, change a 90 to a 45, and everything worked out.
Thanks also Bob & Robert, I'll save this for future use.
SteveThere was an error rendering this rich post.
0 -
sounds like you saved some lives Steve. Always good work0
-
Wouldn't it have been best to break at the primary for the HWH, and not the motor only? If the primary sends power to the motor, and no flame is established, it should lock out. I may still may be not following that particular wiring Ironman? If you have done this, and they both worked without lockouts, then I just learned something from you. Thanks0
-
Bill,
You're right. Hadn't thought about lockout. I was just thinking circuitry. Good eye.Bob Boan
You can choose to do what you want, but you cannot choose the consequences.0
Categories
- All Categories
- 86.3K THE MAIN WALL
- 3.1K A-C, Heat Pumps & Refrigeration
- 53 Biomass
- 422 Carbon Monoxide Awareness
- 90 Chimneys & Flues
- 2K Domestic Hot Water
- 5.4K Gas Heating
- 100 Geothermal
- 156 Indoor-Air Quality
- 3.4K Oil Heating
- 63 Pipe Deterioration
- 916 Plumbing
- 6K Radiant Heating
- 381 Solar
- 14.9K Strictly Steam
- 3.3K Thermostats and Controls
- 54 Water Quality
- 41 Industry Classes
- 47 Job Opportunities
- 17 Recall Announcements