10
GPX-SL25 Instruction Manual
rev 03.21.13
POWERING THE SYSTEM
Step 1
Make sure the control box power switch is in the
OFF position.
OFF
Unscrew and remove the top cover of the control box.
Slide battery into position with its terminals to the left.
Connect the black battery lead to the negative (–) terminal, and the red battery lead to the positive
(+) terminal.
RED
WIRE
to positive (+)
BLACK
WIRE
to negative (–)
Connecting the Battery
Choose the electrical outlet which the transformer will be plugged. Measure the distance from the electrical
outlet to the control box, following the path where the low voltage wire will run using no more than 1000 ft.
Installation of the GTO Transformer
Step 3
Strip the ends of the low voltage wire and attach ends to the transformer
terminals.
To prevent damage to transformer, make sure the exposed wire ends
do not touch each other!
NOTE: Wires coming from the ground to the control box should be run
through PVC conduit to protect them from damage.
Feed the low voltage wires through the strain relief on the front of the
control box (
see Illustration
).
Step 2
Run low voltage wire from the electrical outlet where the transformer will be plugged in, and to the
control box.
NOTE: Pull approximately 3 in. of low voltage wire into the control box to accommodate terminal
connections. To maintain adequate charging power, use 16 gauge dual conductor, stranded, direct
burial wire
(see
Accessories on page 27
).
COND OPERATO
18VAC SOLAR
~ ~ – +
POWER IN
Step 4
Strip
3
/
16
” off the ends of the low voltage wire and twist tightly.
These wire ends will be attached to the control board at the
18VAC terminals located on the POWER IN terminal block
(
see Illustration to the right
). Wire sheathing should not come in
contact with terminals, however, it should not be stripped so far
that wires can come in contact with one another.
