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R2500 wiring examples
System Type 0 (1H/1C CONV)
TERM Name
Function
1
C
24VAC 2
2
R
24VAC 1
3
Y1
Cooling
4
Y2
5
W1
Heating
6
W2
7
A
Economizer
8
G
Fan
System Type 1 (1H/1C HP)
TERM Name
Function
1
C
24VAC 2
2
R
24VAC 1
3
Y1
Compressor 1
4
Y2
5
O/B
Reversing valve
6
AU
7
A
Economizer
8
G
Fan
System Type 2 (1H/1C HP + Emergency)
TERM Name
Function
1
C
24VAC 2
2
R
24VAC 1
3
Y1
Compressor 1
4
Y2
5
O/B
Reversing valve
6
AU
Emergency
7
A
Economizer
8
G
Fan
ALL ELECTRICAL LOADS MUST BE CONNECTED TO 24VAC 2.
i
Note: If remote probe is used, please refer
to the Terminal Designations Overview
(p. 6).
© COPYRIGHT 2010 PECO, INC. ALL RIGHTS RESERVED. P/N 70161 3220-2216 Rev 0
System Type 3 (1 Heat without Fan)
TERM Name
Function
1
C
24VAC 2
2
R
24VAC 1
3
Y1
4
Y2
5
W1
Heating
6
W2
7
A
Economizer
8
G
System Type 4 (1 Heat with Fan)
TERM Name
Function
1
C
24VAC 2
2
R
24VAC 1
3
Y1
4
Y2
5
W1
Heating
6
W2
7
A
Economizer
8
G
Fan
System Type 5 (Cooling Only)
TERM Name
Function
1
C
24VAC 2
2
R
24VAC 1
3
Y1
Cooling
4
Y2
5
W1
6
W2
7
A
Economizer
8
G
Fan
7
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