Table of Contents
Advertisement
SECTION 4 - INSTALLATION
13
14
13
20
13
21
CTB1
TB1
It is possible that multiple sources
of power can be supplying the unit
power panel. To prevent serious in-
jury or death, the technician should
verify that NO LETHAL VOLTAGES
are present inside the panel AFTER
disconnecting power, PRIOR to work-
ing on equipment.
FIG. 3 – CONTROL WIRING
38
CONTROL WIRING
FLOW SW
REMOTE START/STOP
PWM INPUT
LOAD LIMIT INPUT
LD07725
*
* Factory wired with optional transformer.
The unit evaporator heater uses
120 VAC. Disconnecting 120 VAC
power from the unit, at or below freez-
ing temperatures, can result in damage
to the evaporator and unit as a result
of the chilled liquid freezing.
FORM 150.66-NM3
ISSUE DATE: 09/25/2020
LD07730A
JOHNSON CONTROLS
Advertisement
Table of Contents
Troubleshooting
