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How to wire a White-Rogers multi-stage thermostat for basic furnace?

I have White-Rogers 1F95-371 multi-stage thermostat that I'd like to try and use with my plain vanilla residential furnace (Lennox).

Problem:

- I only need it to control heat (W), fan (G) and AC (Y)

- The R and C terminals on the unit have red and black wires (respectively) soldered to a block which has 3 terminals on it (see

formatting link
If I connect W/G/Y plus the R wire, the display does not light up - presumably because it needs a full-time connection to T (transformer common)

Has anyone wired up one of these successfully and can I adapt it to my single-stage furnace?

-Pat

Reply to
Pat Coghlan
Loading thread data ...

Hi,

24V common lead is C. If your 'stat does not use battery you need 24V AC from transformer by connecting R and C(two wires) So altogether you have 5 wires to 'stat. I am no expert. Just replaced a few 'stats. I like Honeywell ones.
Reply to
Tony Hwang

Reply to
Pat Coghlan

Problem: its a Lummox with a WR stat - I only need it to control heat (W), fan (G) and AC (Y) - The R and C terminals on the unit have red and black wires (respectively) soldered to a block which has 3 terminals on it (see

formatting link
- If I connect W/G/Y plus the R wire, the display does not light up - presumably because it needs a full-time connection to T (transformer common)

Has anyone wired up one of these successfully and can I adapt it to my single-stage furnace?

Yup, lots of times

Reply to
Noon-Air

formatting link
- If I connect W/G/Y plus the R wire, the display does not light

Reply to
Pat Coghlan

Hey, I musta drank too much beer and peed on my screen. otherwise, why would YOUR post look yellow, PAT?

No Problem: its a Lummox with a WR stat

- I only need it to control heat (W), fan (G) and AC (Y)

- The R and C terminals on the unit have red and black wires (respectively) soldered to a block which has 3 terminals on it (see

formatting link
If I connect W/G/Y plus the R wire, the display does not light up - presumably because it needs a full-time connection to T (transformer common)

Has anyone wired up one of these successfully and can I adapt it to my single-stage furnace?

Yup, lots of times

Reply to
DIMwit

Want me to lead you by the hand in wiring and programming?? Let me know when you have made a deposit to my PayPal account.

No Problem: its a Lummox with a WR stat - I only need it to control heat (W), fan (G) and AC (Y) - The R and C terminals on the unit have red and black wires (respectively) soldered to a block which has 3 terminals on it (see

formatting link
- If I connect W/G/Y plus the R wire, the display does not light up - presumably because it needs a full-time connection to T (transformer common)

Has anyone wired up one of these successfully and can I adapt it to my single-stage furnace?

Yup, lots of times

Reply to
Noon-Air

Really nice the home dopot here, last time i got stat wire I got some doper dude dint know his ass froma hole.

4 times around, still couldn find 18-5

Finally found the 18-7 and gave it for the same price. no

Want me to lead you by the hand in wiring and programming?? Let me know when you have made a deposit to my PayPal account.

No Problem: its a Lummox with a WR stat - I only need it to control heat (W), fan (G) and AC (Y) - The R and C terminals on the unit have red and black wires (respectively) soldered to a block which has 3 terminals on it (see

formatting link
- If I connect W/G/Y plus the R wire, the display does not light up - presumably because it needs a full-time connection to T (transformer common)

Has anyone wired up one of these successfully and can I adapt it to my single-stage furnace?

Yup, lots of times

Reply to
Jeffrey Lebowski

He must like HTML

Reply to
daytona°

yeah,

but I don't think it belongs here. I like just plain text in a newsgroup without background colors. poor choice of color anyway, in my opinion.

Reply to
DIMwit

I think I can handle the programming (have a degree in computer science).

It's the hot/common connections that I'm not sure about. The R/C terminals already have wires inserted and these wires go over to a block...which also has screw terminals.

Do I wire directly to the terminals (which have a metal flange partially covering them, as if to prevent you from using them) or to the block(s)?

The directions don't say ANYTHING about the on-board wires, other than don't remove them.

-Pat

No>

formatting link
> - If I connect W/G/Y plus the R wire, the display does not

Reply to
Pat Coghlan

Its not rocket science, almost anybody can do it (except you)LOL A degree doesn't mean that you can walk and chew bubble gum at the same time. If you have a degree in computer science, you should be able to handle a simple wiring diagram, and hooking up 5 different colored wires. Whats the worse that can happen..... let the factory smoke out of a component?? blow a fuse?? make the heat and A/C come on at the same time?? The link you posted shows exactly where to hook up the wires, and you can't figure it out..... I guess your degree doesn't apply to simple wiring?? Call a local tech.

It's the hot/common connections that I'm not sure about. The R/C terminals already have wires inserted and these wires go over to a block...which also has screw terminals.

Do I wire directly to the terminals (which have a metal flange partially covering them, as if to prevent you from using them) or to the block(s)?

The directions don't say ANYTHING about the on-board wires, other than don't remove them.

-Pat

No Want me to lead you by the hand in wiring and programming?? Let me know when you have made a deposit to my PayPal account.

No Problem: its a Lummox with a WR stat - I only need it to control heat (W), fan (G) and AC (Y) - The R and C terminals on the unit have red and black wires (respectively) soldered to a block which has 3 terminals on it (see

formatting link
- If I connect W/G/Y plus the R wire, the display does not light up - presumably because it needs a full-time connection to T (transformer common)

Has anyone wired up one of these successfully and can I adapt it to my single-stage furnace?

Yup, lots of times

Reply to
Noon-Air

the link you posted, Pat, clearly shows that R (24VAC hot) and C (24VAC common) need to supply power to the thermostat itself. The block seems like an extension of the R C terminals as you describe them, and as the picture shows just as a matter of convenience in wiring. do you read 24VAC between R and C with your meter?

you need to follow Nooner's advice and get a competent tech there,me thinks

It's the hot/common connections that I'm not sure about. The R/C terminals already have wires inserted and these wires go over to a block...which also has screw terminals.

Do I wire directly to the terminals (which have a metal flange partially covering them, as if to prevent you from using them) or to the block(s)?

The directions don't say ANYTHING about the on-board wires, other than don't remove them.

-Pat

No Want me to lead you by the hand in wiring and programming?? Let me know when you have made a deposit to my PayPal account.

No Problem: its a Lummox with a WR stat

- I only need it to control heat (W), fan (G) and AC (Y)

- The R and C terminals on the unit have red and black wires (respectively) soldered to a block which has 3 terminals on it (see

formatting link
If I connect W/G/Y plus the R wire, the display does not light up - presumably because it needs a full-time connection to T (transformer common)

Has anyone wired up one of these successfully and can I adapt it to my single-stage furnace?

Yup, lots of times

Reply to
DIMwit

You got that right!

Reply to
<kjpro

Me thinks too...

Reply to
<kjpro

Hi, Think parallel or daisy chain then. Matter is getting 24V AC to your &#39;stat.

Reply to
Tony Hwang

I think the problem is that you can&#39;t answer a simple question, which is, should I connect R and C to the block, or the terminal strip? Both have screws to accept wire connections.

There&#39;s a level of confidence one gets after they&#39;ve done something once or twice (successfully). It&#39;s a bit unnerving not having the display light up, and I can see that there&#39;s no return to the common side of the transformer, so perhaps if I hook up the black wire to C I&#39;ll be in business - at which point I&#39;ll probably have a question re: how to adapt the multi-stage operation to a single-stage furnace.

Thinking about it, though, I guess W-R has tapped off C and R to the block to power off-board devices.

I work with electronic technicians all day long (alarm systems), but when I asked one of the senior guys if he knew anything about heating/cooling systems his answer was "my furnace has a red wire and a white wire".

Questi> Its not rocket science, almost anybody can do it (except you)LOL

formatting link
>> - If I connect W/G/Y plus the R wire, the display does

Reply to
Pat Coghlan

I post with Thunderbird in plain text and HTML.

Depend> Hey, I musta drank too much beer and peed on my screen. otherwise, why would

Reply to
Pat Coghlan

formatting link
>>> - If I connect W/G/Y plus the R wire, the display does

Hi, Please don&#39;t top post. It&#39;s annoying. And that &#39;stat looks like it is for multi-stage specific application. Installer option does not show anything for single stage operation. I could be wrong. Tony, EE class of &#39;66 Retired from Honeywell in &#39;96

Reply to
Tony Hwang

Piss-poor choice even.

Reply to
Jeffrey Lebowski

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