Honeywell PRO3000 Series Non-Programmable Digital Thermostat Instruction Manual
Power options
Insert batteries for primary
or backup power
Keep wires in this
shaded
area
Remove factory-
installed jumper only
for two-transformer
systems.
Connect C for primary AC power
(optional if batteries are installed).
TH3110D Terminal block
shown
Wiring terminal designations
W
Y
G
O Rc
R
B
C
E Aux Y
G
O
L
R
B
C
TH3110D
TH3210D
C
24 Vac common. For 2 transformer
systems, use common wire from cooling
transformer.
Changeover valve energized in heating
24 Vac power from heating transformer
C
B
R
L
O
G
Y
24 Vac common
Changeover valve energized in heating
24 Vac power
Sends output when set to Em. Heat
Changeover valve energized in cooling
Fan relay
B
R
Rc 24 Vac power from cooling
transformer
O
G
Y
Compressor contactor
Changeover valve energized in cooling
Fan relay
Compressor contactor
Heat relay
Aux Auxiliary heat relay
Emergency heat relay
E
W
2
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| General | Details |
|---|---|
| Name | Honeywell PRO3000 Series Non-Programmable Digital Thermostat Instruction Manual |
| Make | Honeywell |
| Language | English |
| Filetype | PDF (Download) |
| File size | 1.04 MB |

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