Advertisement
Part I: Install the wallPlate
1. Position the wallplate on the wall with the directional arrow pointing up (see Fig. 3) and
terminal blocks facing outward.
Figure 3:
Position
the wallplate
on the wall.
Pull wires
through
wiring passage.
terminal blocks enlarged
2. Pull equipment wires through the wallplate wiring passage (see Fig. 3).
3. Use a level to determine the best horizontal wallplate mounting position.
4. Mark positions of screw holes (two at minimum) with a pencil and remove wallplate.
5. Drill holes at pencil-marked locations (3/16" for drywall, 7/32" for plaster).
6. Insert the wall anchors in the holes, tapping them into place.
7. Mount the wallplate onto the wall and insert screws through mounting holes. Assure
that all loose wires come through the center opening of the wallplate (see Fig. 3).
8. Cap off any unused wires and terminate properly according to local building codes.
Part II: attach wIres to thermostat wallPlate
1. Select the terminal designations that correspond to the system type (see Table 1).
▲
• warnInG: Disconnect power before beginning installation.
!
• caUtIon: Use copper wire only. Insulate or wire-nut all unused leads.
• Use care to avoid electrostatic discharge to thermostat
taBle 1. termInal DesIGnatIons & sYstem tYPes
Conventional Terminal Letters
Unswitched side, 24 VAC
c
Stage 1 Heat
w1
Stage 2 Heat
w2
Fan
G
Economizer/Damper/
a
Humidity
Stage 3 Heat
e
Stage 1 Cool
Y1
Stage 2 Cool (or Dehumidify)
Y2
Power for heating,
rh
switched side, 24 VAC
Power for cooling,
rc
switched side, 24 VAC
Sensor Common
sc
Indoor/ Outdoor
s1
Remote Sensor
Occupancy Sensor/
s2
Setback Input
CO
Sensor/
s3
²
Outdoor Remote Sensor
System Type 1: 1H/1C Conventional
TERM
Function
C
Common
W1
Heat
W2
G
Fan
A
Economizer/Damper
E
Y1
Cool
Y2
RH
Power for Heating
RC
Power for Cooling
© COPYRIGHT 2011 PECO, INC. ALL RIGHTS RESERVED.
wiring passage
Heat Pump Terminal Letters
Unswitched side, 24 VAC
c
Reversing Valve
B/o
Auxiliary (Stage 3 Heat)
aUX
Fan
G
Economizer/Damper/
a
Humidity
Emergency Heat
e
Compressor Stage 1, Heat /Cool 1
Y1
Compressor Stage 2, Heat /Cool 2
Y2
(or Dehumidify)
Power for heating,
rh
switched side, 24 VAC
Power for cooling,
rc
switched side, 24 VAC
Sensor Common
sc
Indoor/ Outdoor
s1
Remote Sensor
Occupancy Sensor/
s2
Setback Input
CO
Sensor /Outdoor Remote Sensor
s3
²
with Heat Pump Compressor Lockout*
System Type 2: 1H/1C Heat Pump
TERM
Function
C
Common
B/O
Reversing Valve
AUX
G
Fan
A
Economizer/Damper
E
Y1
Compressor
Y2
RH
Power for Heating
RC
Power for Cooling
System Type 3: Heat only (without fan)
TERM
Function
C
Common
W1
Heat
W2
G
A
Economizer/Damper
E
Y1
Y2
RH
Power for Heating
RC
System Type 5: Cool only
TERM
Function
C
Common
W1
W2
G
Fan
A
Economizer/Damper
E
Y1
Cool
Y2
RH
Power for Heating
RC
Power for Cooling
System Type 7: 2H/2C Conventional
TERM
Function
C
Common
W1
Heat 1
W2
Heat 2
G
Fan
A
Economizer/Damper
E
Y1
Cool 1
Y2
Cool 2
RH
Power for Heating
RC
Power for Cooling
System Type 9: 1H/2C Conventional
TERM
Function
C
Common
W1
Heat
W2
G
Fan
A
Economizer/Damper
E
Y1
Cool 1
Y2
Cool 2
RH
Power for Heating
RC
Power for Cooling
i
all electrIcal loaDs
mUst Be connecteD to
termInal c (24 vac).
2
System Type 4: Heat only with fan
TERM
Function
C
Common
W1
Heat
W2
G
Fan
A
Economizer/Damper
E
Y1
Y2
RH
Power for Heating
RC
System Type 6: 2H/1C Heat Pump (Aux.)
TERM
Function
C
Common
B/O
Reversing Valve
AUX
Auxiliary Heat
G
Fan
A
Economizer/Damper
E
Emergency Heat
Y1
Compressor
Y2
RH
Power for Heating
RC
Power for Cooling
System Type 8: 2H/1C Conventional
TERM
Function
C
Common
W1
Heat 1
W2
Heat 2
G
Fan
A
Economizer/Damper
E
Y1
Cool
Y2
RH
Power for Heating
RC
Power for Cooling
System Type 10: 2H/2C Heat Pump
TERM
Function
C
Common
B/O
Reversing Valve
AUX
G
Fan
A
Economizer/Damper
E
Y1
Compressor 1
Y2
Compressor 2
RH
Power for Heating
RC
Power for Cooling
*Note: Heat Pump Compressor Lockout
requires connection of Outdoor Remote
Sensor to S1 or S3.
P/N 70568 3220-2287 REV 00
Advertisement
