JOHNSON CONTROLS
45
SECTION 4 – INSTALLATION
FORM 150.27-NM1
ISSUE DATE: 09/30/2015
4
FIGURE 13 -
CONTROL WIRING
CONTROL WIRING
LD07730A
LD14516
*
* Factory wired with optional transformer.
CTB1
21
13
LOAD LIMIT INPUT
14
13
51
13
FLOW SW
REMOTE START/STOP
20
13
PWM/LL2
The unit evaporator heater uses 120VAC.
Disconnecting 120VAC power from the
unit, at or below freezing temperatures,
can result in damage to the evaporator
and unit as a result of the chilled liquid
freezing.
It is possible that multiple sources of
power can be supplying the unit power
panel. To prevent serious injury or death,
the technician should verify that NO
LETHAL VOLTAGES are present inside
the panel AFTER disconnecting power,
PRIOR to working on equipment.
