Doit 474053 Low Voltage Thermostat Installation Guide
Two-Transformer Systems
CAUTION
!
If two transformers are used, they MUST be in phase.
Failure to do so will result in personal and/or property
damage.
Heat Pump Applications
Thissubbase WILLNOTprovidemulti-stageheatingorcooling. For
single stage applications, install a short jumper wire across termi-
nalsWandY.Iftheoldthermostathasaterminalthatiscontinuously
energized, disconnect the wire from the old thermostat’s terminal
and connect it either to the: (1) B terminal, if the reversing valve is
energized on a call for heat; or to the (2) O terminal, if the reversing
valve is energized on a call for cool. If the system heats on a call for
cool or vice versa, this wire has been connected to the wrong
terminal.
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| General | Details |
|---|---|
| Name | Doit 474053 Low Voltage Thermostat Installation Guide |
| Make | DOIT |
| Language | English |
| Filetype | PDF (Download) |
| File size | 0.12 MB |
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