
© 2009 D 512 - 09/09 16 of 20
Two Stage with Zone Pump and Zone Valve
Power: 24
V ± 10% 60 Hz 3
VA
Relay:
24
V (ac) 2
A
Class 2
938-
02
512
Switch Settings
:
Installer/User
2 Stage/Heat-
Cool
Made
in Can
ada
Mee
ts Class B:
Canadian ICES
FCC
Part 15
T
T
1
2
L
N
M
Stage 2
Zone
Valve
24 V (ac)
Class 2
Transformer
Stage 1
Zone
Pump
Typical Powered
Relay
Two Stage with Zone Pump and Zone Valve
Power: 24 V ± 10% 60
Hz 3
VA
Relay:
24
V (ac) 2
A
Class 2
938-02
512
Switch Settings
:
Installer/User
2 Stage/Heat-Cool
Stage 1
Zone
Pump
2
1
8
7
3
4
5
6
M
Stage 2
Zone
Valve
24 V (ac)
Class 2
Transformer
Made
in Can
ada
Mee
ts Class B:
Canadian ICES
FCC
Part 15
Unpowered Relay
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