Wiring conversion charts
Replacing Existing Thermostats
Common
Call (N/O)
Satisfied (N/C)
Replacing other Thermostats
Common
Call (N/O)
Satisfied (N/C)
HRT4-B
DRT1
1
Common
4
N/O
3
N/C
HRT4-B
Drayton
Digistat +
1
4
3
Danfoss
RETB
Com
On
Off
Honeywell
DT90E
3
A
2
B
1
C
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