DCN: 140-02034-03
Page 6
Standard Gas/Electric HVAC System Wiring
Thermostat Setup: Standard Gas/Electric HVAC Systems
To set the HVAC system type, go to the
Thermostat Info
screen
Setup
or the
Installer Settings
menu
(a hidden screen
– go to the main menu screen and press and hold the center two buttons for 5 seconds)
In the Installer Settings Menu, Select
System Settings
then select
Mechanical Settings
and set the following:
1.
Type.
Set the HVAC System Type: set to
Gas/Elec
2.
Fan Type
. Set the HVAC Fan Type:
Set to
Gas
for typical gas furnace (fan is controlled by the furnace)
Set to
Elec
for electric heat (fan call with heat call)
3.
C/O type
. Not used for standard systems. Ignore this setting.
4.
2nd Stage Heat
. Enable second stage heating outputs
If you have a single stage heating system, leave this set to
N
If you have a 2 stage heating system, set to
Y
to enable.
5.
Aux Heat (HP).
Not used for standard systems. Ignore this setting
6.
2nd Stage Cool
. Enable second stage cooling outputs
If you have a single stage cooling system, leave this set to
N
.
If you have a two stage cooling system , set to
Y
to enable.
Default Setup:
Standard System
Gas Heat
1 Stage heating
1 Stage cooling
No setup required for
this configuration
Standard HVAC System
W1
G
W2/O
Y1
24C
24RH
24RC
Y2
24V R Cooling
Fan
Cooling stage 1
Cooling stage 2
24V Com
24V R Heating
Heating stage 1
Heating stage 2
Optional 24R Connection for single transformer HVAC Systems
RC and RH are jumpered together on thermostat board.
Cut RC/RH jumper JP1 for separate heating and cooling transformers
Fan
Heating Stage 1
Cooling Stage 1
24VAC Return
24VAC Common
Thermostat Connection Terminals
Cooling Stage 2
Heating Stage 2
C
R
G
W1
Y1
W2
Y2