Service manual

Options
81
DCB, DCFCB and DCFCTB Models
3. Connect Ground (green wire) from fused disconnect to the green ground block on
the DIN rail in the Control Unit. Push a small screwdriver into the square opening
in the terminal block to open the contacts of this block.
4. Follow the instructions included with the lightning protector (supplied) and install
in the service disconnect.
5. Size the fuse or circuit breaker in the service disconnect to 15 Amps maximum.
Model HTR2 and HTR4 (Battery Warmers)
In locations where temperatures may drop below freezing for extended periods, the
optional battery warmers are recommended to maintain battery efficiency. A
thermostat provides on-off control of the warmers that senses the inside temperature
of the battery cabinet. The battery warmer option is equipped with four (4) battery
warmers that are wrapped around each of the four (4) batteries in the battery cabinet.
The warmers are plugged into the cube taps, which plug into the thermostat cube,
which is plugged into a 120 VAC outlet that is provided for in the battery box. No
other connection or mounting is required for this option.
Figure 21 HTR2 and HTR4 Wiring Diagram
Electrocution or severe personal injury can occur when making electrical
connections, drilling holes, or lifting equipment. Therefore, only experienced
electricians should install this product in accordance with national and local electrical
codes.