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Figure 1 Connection of Twinning Leads and Locating Isolation Relay On Furnace #1 Control Panel
4
3
2
1
ISOLATION RELAY
(SPST)
DRILL TWO 1/8” Dia.
T r ansformer
ST9120C40
CONTROL PANEL (Located In Blower Compartment).
ELECTRONIC
FAN CONTROL
ST9120
4
3
2
1
ISOLATION RELAY
(SPST)
DRILL TWO 1/8” Dia.
T r ansformer
CONTROL PANEL (Located In Blower Compartment).
ELECTRONIC
FAN CONTROL
ST9160
25--23--77
DATA
ST9160B
TWIN
C
H
Twinning Leads
Twinning Leads
T
W
I
N
Z1