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Terminals S1, S2, and SC are used with remote sensors. S1 can be used with a remote
sensor to monitor indoor or outdoor temperatures. An outdoor remote sensor can be used
to change system operation based on the outdoor temperature with heat pumps with gas/
oil backup or heat pumps with electric backup. An indoor remote sensor is used to read
the indoor temperature in a different location. This is beneficial when the thermostat is not
mounted in the ideal location.
S2 is a 10kΩ NTC thermistor sensor that can only monitor the temperature in a different area.
1. Remove cover from remote sensor housing.
2. Select an appropriate location for mounting the remote sensors.
3. Mount the remote sensors using hardware provided.
4. Install two-strand shielded wire between the S1 terminal on the remote sensor and the S1
terminal on the thermostat.
5. Install two-strand shielded wire between the 10kΩ NTC remote sensor and the S2 terminal
on the thermostat.
6. From both remote sensors, install a two-strand shielded wire from their common to the SC
terminal on the thermostat.
7. Configure the thermostat to work with the remote sensor.
Ordering Information:
Remote Sensor 1
– Indoor remote sensor: ACC-RT104
– Outdoor remote sensor: ACC-OD104
Remote Sensor 2
– 10kΩ NTC thermistor sensor
Heat/Cool
Heat Pump (One Compressor)
Remote Sensor Installation (Optional)
1010R Output Chart
1
Cool
ST
Y1, G
Y1, G, O
1
Heat
ST
W1, G*
Y, G, B
Note:
Remote or outdoor sensor
reading can be displayed by
pressing the
icon.
Press
, select
press
* G not on for gas/oil systems
9
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