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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
Conventional systems
Note: 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.
Power open Zone valve
Series 20 Zone valve
(power open and power closed)
R
Power from transformer
R
Power from transformer
Rc [R+Rc joined by Slider Tab]
Rc [R+Rc joined by Slider Tab]
W
Valve
W
Y
Power open valve (usually B)
Power close valve (usually W)
C* 24VAC common
C* 24VAC common
NOTE: If the valve uses Y for power close, the thermostat needs to be configured for a radiant heat system
without cooling.
Heat pumps systems
1H/1C Heat Pump System
Power
Rc [R+Rc joined by Slider Tab]
Compressor contactor
2H/2C Heat Pump System
Power
Rc [R+Rc joined by Slider Tab]
Compressor contactor (stage 1)
R
R
Y
Y
C* 24VAC common
C* 24VAC common
O/B Changeover valve
O/B Changeover valve
G
Fan relay
G
Fan relay
Y2 Compressor contactor (stage 2)
Heat pump fault input
L
2H/1C Heat Pump System
Power
Rc [R+Rc joined by Slider Tab]
Compressor contactor
3H/2C Heat Pump System
Power
Rc [R+Rc joined by Slider Tab]
Compressor contactor (stage 1)
R
R
Y
Y
C* 24VAC common
C* 24VAC common
O/B Changeover valve
O/B Changeover valve
G
Fan relay
G
Fan relay
Aux Auxiliary heat**
Aux Auxiliary heat**
E
L
Emergency heat relay**
Heat pump fault input
E
Emergency heat relay**
Y2 Compressor contactor (stage 2)
L
Heat pump fault input
NOTE: Do NOT use W for heat pump applications. Auxiliary heat must wire to AUX or E.
* 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.
** If you do not have separate wires for the Aux and E terminals, connect the wire to the Aux terminal.
7
Mounting thermostat
1. Push excess wire back into the wall opening.
2. Close the UWP door. It should remain
closed without bulging.
3. Align the UWP with the thermostat, and
push gently until the thermostat snaps in
place.
Note: If you used the Optional Cover Plate
shown on page 2, remove the gray trim
M38801
ring from the thermostat before step 3. Then
align the thermostat with cover plate and push
gently until the thermostat snaps into place.
Note: If needed, gently pull to remove the
thermostat from the UWP
M38802
Installer setup
The display will walk you through equipment setup,
connecting to wireless sensors and connecting to
Wi-Fi.
Welcome!
The final step in the setup is a place you can enter
your company name and contact information.
That contact information will be displayed with
alert or reminder messages to keep you connected
to your customer.
M38800
8
| 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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