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Honeywell Home M38794 T10 and T10 plus Pro Smart Thermostat with RedLINK Installation Guide
Wiring
NOTES:
1. Use 18- to 22- gauge thermostat wire. Shielded cable is not required.
2. Set the R Slider Tab on the UWP to the up position (1 wire) for 1 transformer
systems or the down position (2 wires) for 2 transformer systems. See "Setting
Slider Tabs" on page 4.
3. Set the U Slider Tab as shown in the diagrams on page 4.
4. When T10+ is used with THM04R3000 EIM, wire only R and C to T10+ to power
the thermostat. Then follow the wiring diagrams included in EIM literature.
Conventional systems
Heat-only System with Fan
Power
1H/1C System (1 transformer)
Power
Rc [R+Rc joined by Slider Tab]
Compressor contactor
C* 24VAC common
R
R
Rc [R+Rc joined by Slider Tab]
C* 24VAC common
Y
W
G
Heat relay
Fan relay
W
G
Heat relay
Fan relay
1H/1C System (2 transformers)
Power (heating transformer)
Rc Power (cooling transformer)
Compressor contactor
C* 24 VAC common from cooling transformer
Cool-only System with Fan
Power
Rc [R+Rc joined by Slider Tab]
Compressor contactor
C* 24VAC common
Fan relay
R
R
Y
Y
W
G
Heat relay
Fan relay
G
2H/2C System (1 transformer)
Power
Rc [R+Rc joined by Slider Tab]
Compressor contactor (stage 1)
C* 24VAC common
Hot Water Relay Panel
Power
Rc [R+Rc joined by Slider Tab]
Heat Relay
R
R
Y
W
C* 24VAC common
W
G
Heat relay (stage 1)
Fan relay
NOTE: If the panel does not provide 24 volts AC
at R and C, set the slider to down position and
wire a separate transformer to Rc and C.
W2 Heat relay (stage 2)
Y2 Compressor contactor (stage 2)
* This thermostat requires a C-Wire. If a C-Wire is not available and the system uses Y and G, use C-Wire
adapter accessory THP9045A1098 or THP9045A1023.
6
| General | Details |
|---|---|
| Name | Honeywell Home M38794 T10 and T10 plus Pro Smart Thermostat with RedLINK Installation Guide |
| Make | Honeywell Home |
| Language | English |
| Filetype | PDF (Download) |
| File size | 1.5 MB |
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