Effikal damper – A.O. Smith 120 trough 500 User Manual
Page 28
BTR TANK TYPE HEATERS
SERVICE HANDBOOK
A.O. Smith Water Products
Service Handbook
Irving, Texas ©2000
Training Department
27
Damper
1
2
3
4
Bl
a
c
k
Red
Ye
llo
w
Wh
it
e
Orange
Brown Yellow
Black
Male Plug
From Heater
2
1
3
4
Female Plug
EFFIKAL DAMPER
BTR Series 110 and 111 began using the motor open; motor close, Effikal Damper. The
wiring colors from the damper PC Board are different from previous series BTR(C) and
BTC Models.
The heater harness wires still serve the same function:
Service
Switch
Adapter
Plug
Heater
Harness
Service
Switch
Motor
Lead
Terminal
Motor
Lead
Motor
Effikal Control Cover (Photo of kit mounting)
Effikal Style
Black – 24V Constant if high limit closed
Yellow – 24V To damper if the thermostat is closed
Red – 24V
From damper to IID if damper closes end switch
White – Neutral (common)
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