Installation Guide

DCN: 140-02338-01 DRAFT 20619
Page 3
To connect dual transformer systems, FIRST REMOVE THE SUPPLIED RH-RC JUMPER.
Then connect the heating “R” wire to the RH terminal and the cooling “R” wire to the RC
terminal on the thermostat.
Single Stage Heat Pump HVAC System Wiring to the Thermostat
If you have additional wires, see the wiring diagrams on page 5 and 6.
Check that the wires are screwed into the terminal blocks firmly.
Gently pull on the wires to confirm the connection.
Push all the excess wiring back into the wall.
Mount the thermostat
If the thermostat is 24VAC powered (24VAC common “C” wire connected).
DO NOT INSTALL BATTERIES!
Install the thermostat on to the base.
Turn on power to the thermostat.
Connect the wires as marked from the HVAC system
to the corresponding terminals on the thermostat
back.
*C wire (24VAC common)
Heat Pump systems usually have the C wire
connected to the thermostat. If there isn’t a C wire,
batteries must be installed.
** O or B wires (changeover valve) connect to the
W2/O terminal on the thermostat. Set the correct
changeover operation (O = change over with cool, B
= changeover with cool) in the SETUP menu.
Connect the R wire to either RC or RH terminals.
Factory installed RC and RH jumper
O**
W
Y
G
C*
R
Thermostat
Terminal Block
W2/O W1 RH C RC G Y1 Y2