28
27
26 25
24
22 21
23
28 27 26
25
24
22 2123
E
D
B
A
C
E
D
B
A
C
BIAS
3
LEARN
1
NEUTRAL
1
IGN-N
IGN
W2
C
E18
6
EAC
R
6
W1
R311
W2
BIAS
DE
Y1
R
ANSI Z21.20 AUTOMATIC IGNITION SYSTEM 24VAC 60Hz 0.8 A. MAX.
E109
15
TM
12
GND
1
CLIMATE TALK
13
3
9
G
8
TX
1
S3
2
F1
3
O
G
1
R
E24
2
1
59-4715 REV. F
TERM
S5
Y2
7
E114
STATUS
2
E22
W1
1
3
W2
1
C
IND-LO
2
52
RX
1
IND-HI
2
LINE
Y1
Y1
O
1
7
1
E25
G O
1
S1
4
DEHUM
R
R
IND-N
1
5
HUM
ST5
1
ST4
10
HUM
RX
C
FS
Y2
1
1
DEHUM
1
9
Y2
E103
E104
S4
10
E23
W1
4
12V
1
2
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