Self-Regulating Heater Accessory; Heater Wiring Diagram For 115, 208, 230, 460 And 575V Operators - Chamberlain LiftMaster Professional SL575 Installation Manual

SELF-REGULATING HEATER ACCESSORY

Operators with installed heater kits are thermostatically controlled heaters that are utilized in areas where the temperature has the
potential to drop below freezing. The heater is adjusted to 15˚C. To change the setting, rotate the temperature control knob on the
heater to a new temperature setting.
NOTE: The temperature readout is in degrees Celsius.
H E A T E R W I R I N G D I A G R A M F O R 1 1 5 V O P E R A T O R S
H E A T E R W I R I N G D I A G R A M F O R 2 0 8 , 2 3 0 , 4 6 0 A N D 5 7 5 V
Line voltage
White
to operator
Black
controls
O P E R A T O R S
24 Vac to
Blue
Fusible de 3.2A
operator
Yellow
controls
HEATER REPLACEMENT PARTS
PART NUMBER DESCRIPTION
21-15453-1 Transformer 100VA with 3.2 fuse
(208V, 230V and 460V models only)
50-18423 Heater
On/Off
Switch
White
L1
ON
L2
Black
OFF
Grey (575V)
Violet (480V)
Orange (230V)
Red (208V)
White
White (Common)
(Common)
Black (120V)
28
1 PHASE
115 VOLT
POWER IN
Green
Ground
Terminate
unused
transfer
input wires
Green
Ground
QTY
1
1