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Posted by Tony Hwang on July 7, 2007, 12:28 pm
Pat Coghlan wrote:
> The funny thing about this thermostat is that the C and R terminals have
> wires going to a block. There's also a metal flange covering the top of
> the terminal, one would think to dissuade the user from connecting the
> red/black wires there and, rather, connect them at the block.
>
> Tony Hwang wrote:
>
>> Pat Coghlan wrote:
>>
>>> 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
>>> http://www.white-rodgers.com/wrdhom/pdfs/06_Cat_pages/Cat_06_pg0161.pdf)
>>> - 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
>>
>> 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.
>
Hi,
Think parallel or daisy chain then. Matter is getting 24V AC to your 'stat.
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