Chamberlain LiftMaster CSL24V Installation Manual page 20

WIRING
CONNECT BATTERIES
33AH BATTERIES
The batteries are charged in the circuit by the integrated transformer. The batteries
are for battery backup or solar installation. The 33AH application requires the 33AH
wire harness (Model K94-36596). NOTE: If 33AH batteries (2) are used, the battery
tray underneath the heater will need to be removed to allow more space in the
enclosure (if applicable).
1
Disconnect the red (+) and black (-) wires going from the bridge rectifier to
the J15 plug labeled DC POWER on the control board.
2
Connect the shorter set of red (+) and black (-) wires from the new 33AH
wire harness to the bridge rectifier.
3
Connect a jumper between the positive (+) terminal of one battery to the
negative (-) terminal of the other battery.
4
Connect the longer red wire from the J15 plug (new wire harness) to the
positive (+) terminal of the battery.
5
Connect the longer black wire from the J15 plug (new wire harness) to the
negative (-) terminal of the battery.
6
Turn ON AC power to the operator.
7
Turn ON the AC power switch on the operator.
8
Plug the J15 plug (new battery harness) into the control board. NOTE: You
may see a small spark when plugging the J15 plug into the board.
(without heater)
(with heater)
Bridge Rectifier
Black (-)
18
CONNECT BATTERIES
J15 Plug
(new wire
Red (+)
harness, Model
K94-36596)
-
+ - +
33AH Batteries