6
Installation
1. Install Sensi thermostat, referring to these terminal
definitions, cross references and wiring diagrams as needed:
OLD
THERMOSTAT
SENSI
THERMOSTAT
CONVENTIONAL
SYSTEM
HEAT PUMP SYSTEM
RH RH
†
Power for heating, 24V
RC, R RC
†
Power for cooling, 24V
C, X, B** C Common wire, 24V
Y, Y1 Y 1st stage cool
1st outdoor
stage heat
Y2 Y2/*
2nd stage cool
or humidifier
2nd outdoor stage
heat and cool
or humidifier
W, W1, W/E,
Aux/E, E
W/E 1st indoor stage heat
1st stage auxiliary/
emergency heat
W2
†††
W2/*
2nd indoor stage
heat or dehumidifier
2nd stage auxiliary/
emergency heat
or dehumidifier
G G Indoor blower (fan)
O,B,
††
O/B O/B
Changeover (reversing valve) connection
for heat pump or zone panel systems
L L no function
“L” terminal
connection
†
Two transformer systems (separate RC and RH wires), clip internal jumper located
on back of Sensi above battery compartment.
††
Label “B” as “C” only if the old thermostat also had a wire in “O”. If there is no wire
on “O”-label the wire “B”.
†††
On Heat Pump system with separate W2 and E wires, label both wires W/E
(2 wires in one terminal).
To Next Page
Loading...
