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I have a York T874R1046 thermostat in my office and I am…

Customer Question
I have a York...

I have a York T874R1046 thermostat in my office and I am looking to replace it with a programmable thermostat and need to know which will work.

Contractor's Assistant: Just to clarify, do you think this is a larger HVAC problem, or something specific to the thermostat?

Just a thermostat

Contractor's Assistant: Do you plan on doing the work yourself?

I would like to

Contractor's Assistant: Anything else we should know to help you best?

Not that I know

Submitted: 2 months ago.Category: HVAC
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Answered in 3 minutes by:
12/12/2017
HVAC Technician: Rick, HVAC Supervisor replied 2 months ago
Rick
Rick, HVAC Supervisor
Category: HVAC
Satisfied Customers: 23,315
Experience: 40+ yrs. experience as a licensed oil & gas technician.
Verified

Welcome to Just Answer, my name is ***** ***** I will do my best to help you with your

issue. First I’ll need some more info so I have a more complete picture of your situation.

What terminals are connected on the thermostat?

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Customer reply replied 2 months ago
I can't see any terminals lettering but there are blue, yellow, white,red and black wires and it has two mercury vials
Customer reply replied 2 months ago
Are you still there
HVAC Technician: Rick, HVAC Supervisor replied 2 months ago

No specs are available for your old stat. So unless you can tell me what the terminals designation is I can't help you

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Customer reply replied 2 months ago
How do I find the terminals
HVAC Technician: Rick, HVAC Supervisor replied 2 months ago

You have to remove the thermostat from the wall.

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Customer reply replied 2 months ago
I see W,O,Y,B,G,R,X,H and T
Customer reply replied 2 months ago
H and T have no wires connected
HVAC Technician: Rick, HVAC Supervisor replied 2 months ago

I'm going to open this up to my colleagues so one of them can help. Please don't respond (even to acknowledge this post)until you get a response from us. If you respond first it will only delay your answer.

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HVAC Technician: Regan Land, HVAC Technician replied 2 months ago
Regan Land
Regan Land, HVAC Technician
Category: HVAC
Satisfied Customers: 750
Experience: Over 20 years of experience, NATE Certified, Licensed HVAC Contractor, Certified IAQ Specialist
Verified

Hi, my name is ***** ***** I'll be happy to assist you with your question today. So W, O, Y, B, G, R, & X all have wires connected to them? Do you know what type of heat you have (heat pump, gas heat, etc)?

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Customer reply replied 2 months ago
not sure
HVAC Technician: Regan Land, HVAC Technician replied 2 months ago

Okay, it the outdoor unit accessible?

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Customer reply replied 2 months ago
No its on the roof
HVAC Technician: Regan Land, HVAC Technician replied 2 months ago

Okay, it appears that you have a heat pump with Auxiliary heat. It would be best to confirm this prior to replacement of stat, but we can proceed if you choose.

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Customer reply replied 2 months ago
Okay
HVAC Technician: Regan Land, HVAC Technician replied 2 months ago

The HVAC company that services the equipment should know what system you have and should be able to provide you a model # of the system. The model # will allow me to verify the type of system you have.

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Customer reply replied 2 months ago
ok
HVAC Technician: Regan Land, HVAC Technician replied 2 months ago

Let me know what you find out.

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Phil
Phil
Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6,938
6,938 Satisfied Customers
Experience: Retired HVAC/ Electrical & Boiler contractor. Industrial

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