8
8
Two Stage Conventional (2 Stage Heat / 2 Stage Cool)
UP
Heat 1
Heat 2
24VAC Common*
24VAC "HOT"
Dehumidier
Humidifier
Cool 2
Cool 1
Fan
24VAC
CONTROL
TRANSMFOMER
Heat 2 Relay
Heat 1 Relay
Cool 1 Relay
Fan Relay
Cool 2 Relay
Humidifier
Dehumidifier
THERMOSTAT
HVAC SYSTEM
12
11
7
6
8
3
1
10
(RC)
(C)
(W1)
(Y1)
(G)
(H)
(D)
(Y2)
4
(W2)
Figure 8
–
Connections for two stage conventional thermostat
CONFIGURATION
¾
The “System Type” for this thermostat must be set to “Conventional” under
“System Options”
.
¾
In the default configuration, this thermostat does not turn the fan on with a call for heat. If the furnace does
not turn the fan on with a call for heat, the thermostat must be configured to do so under
“System Options”
.
¾
The “Cool Stages” and “Heat Stages” settings must be configured under
“Stage Settings”
.
POWER UP
1.
Double check wiring, be sure that there
are
no stray wires or wire strands at the connections.
2.
Connect power to the transformer and system. The display will show the current thermostat settings.
3.
Press [FAN] and select “On”. The fan should come on.
4.
Press [FAN] and select “Auto”. The fan should go off.
5.
Press [HOLD] and select “On” to override Energy Efficient Control.
6.
Set the Mode to "Heat". Raise the desired heat setting 1 degree above the current temperature. Ensure
that Stage 1 heat comes on. After a few minutes, raise the desired heat setting 3 degrees above the current
temperature. Stage 2 heat should come on. Set the mode to "Off". Ensure that the heating unit goes off.
7.
Set the Mode to "Cool". Lower the desired cool setting 1 degree below the current temperature. Ensure
that Stage 1 cool comes on. After a few minutes, lower the desired cool setting 3 degrees below the
current temperature. Stage 2 cool should come on. Set the mode to "Off". Ensure that the cooling unit
goes off.
8.
Press [HOLD] and select “Off” to enable Energy Efficient Control.
