Home Repair forum - correct thermostat setup

Author

correct thermostat setup

Jed@nospam.com

2008-03-31, 5:25 pm

Hi,

We got a new thermostat to replace the old mercury bulb (or whatever's
in there) type. The person who set it up doesn't know if it's right.

The thermostat is a FocusPRO TH5220D.

The outside unit:
TRANE BTB718A 100A1
Compr. Mot. 10.2 44 LRA
O.D. Mot. 1.9 1/8 HP
Regrig 22 2 lbs 4 oz
min CKT 16 amps
CTK BRKR 20 amps
230 V 60 HZ
MFR DATE 3/85

The inside unit:
TRANE BLU055E924B1
Gas fired forced air furnace
115 V 12 Amp 1 PH 60 HZ
55.00 BTU/HR
Air temp MSE 50-80 deg. F.
Max outlet air temp 190 deg. F.

The wires that are hooked up on the thermostat are G W Y R-RC
(R and RC have a connecter joining them). The only other wire, blue,
is not connected to anything.

The wiring matches the diagram (thermostat manual) for a 1H/1C System
with 1 transformer, where wire C - "optional 24VAC common connection"
- is unhooked.

The thermostat system type is set to '0' - 1 heat/1 cool conventional.
Other options are for a heat pump, heat or cool only, and then
2 heat /2 cool conventional, 2 heat/1 cool conventional, and 1 heat/2
cool conventional.

Other settings:
3- Fan Control - set to Gas furnace equipment controls fan in heating.
(Other option is electric furnace controls fan in heating.)
5- Stage 1 Heat Cycle - set to 5, for Gas furnaces with < 90%
efficiency. (other options are > 90% and electric)
9- Stage 1 Compressor cycle rate - set to 3, recommended for most.
(Other options are1 - 6.)
12- Manual/Auto changeover - set to 1, Auto
changeover-heat/cool/auto/off. (Other options are Manual changeover-
heat/cool/off and Auto changeover only- Auto.
15- Compressor protection - 5 minute compressor off time. (Other
options are 0 - 4.)
Other options are not selectable with system type set to '0' - such as
changeover valve, stage 2 heat cycle, auxilliary heat cycle, emergency
heat cycle, and stage 2 compressor.

Does everything look okay? (Heating and cooling is working...)
Thanks

ftwhd

2008-03-31, 5:25 pm

On Mon, 31 Mar 2008 17:48:55 -0500, Jed@nospam.com wrote:

>Hi,
>
>We got a new thermostat to replace the old mercury bulb (or whatever's
>in there) type. The person who set it up doesn't know if it's right.
>
>The thermostat is a FocusPRO TH5220D.
>
>The outside unit:
> TRANE BTB718A 100A1
> Compr. Mot. 10.2 44 LRA
> O.D. Mot. 1.9 1/8 HP
> Regrig 22 2 lbs 4 oz
> min CKT 16 amps
> CTK BRKR 20 amps
> 230 V 60 HZ
> MFR DATE 3/85
>
>The inside unit:
> TRANE BLU055E924B1
> Gas fired forced air furnace
> 115 V 12 Amp 1 PH 60 HZ
> 55.00 BTU/HR
> Air temp MSE 50-80 deg. F.
> Max outlet air temp 190 deg. F.
>
>The wires that are hooked up on the thermostat are G W Y R-RC
>(R and RC have a connecter joining them). The only other wire, blue,
>is not connected to anything.
>
>The wiring matches the diagram (thermostat manual) for a 1H/1C System
>with 1 transformer, where wire C - "optional 24VAC common connection"
>- is unhooked.
>
>The thermostat system type is set to '0' - 1 heat/1 cool conventional.
>Other options are for a heat pump, heat or cool only, and then
>2 heat /2 cool conventional, 2 heat/1 cool conventional, and 1 heat/2
>cool conventional.
>
>Other settings:
>3- Fan Control - set to Gas furnace equipment controls fan in heating.
>(Other option is electric furnace controls fan in heating.)
>5- Stage 1 Heat Cycle - set to 5, for Gas furnaces with < 90%
>efficiency. (other options are > 90% and electric)
>9- Stage 1 Compressor cycle rate - set to 3, recommended for most.
>(Other options are1 - 6.)
>12- Manual/Auto changeover - set to 1, Auto
>changeover-heat/cool/auto/off. (Other options are Manual changeover-
>heat/cool/off and Auto changeover only- Auto.
>15- Compressor protection - 5 minute compressor off time. (Other
>options are 0 - 4.)
>Other options are not selectable with system type set to '0' - such as
>changeover valve, stage 2 heat cycle, auxilliary heat cycle, emergency
>heat cycle, and stage 2 compressor.
>
>Does everything look okay? (Heating and cooling is working...)
>Thanks

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