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SECTION 6 - TECHNICAL DATA
TABLE 11 – MICRO PANEL POWER SUPPLY
UNIT VOLTAGE
UNIT
MODELS w/o
VOLTAGE
CONTROL
TRANS
MODELS w/
CONTROL
-50
TRANS
A. Minimum #14 AWG, 75°C, Copper Recommended
B. Minimum and Maximum Over Current Protection, Dual Element Fuse or Circuit Breaker
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 dis-
connecting power, PRIOR to working
on equipment.
TABLE 12 – VOLTAGE RANGE
VOLTAGE CODE
-50
56
ELECTRICAL DATA
CONTROL
MCA
POWER
NOTE A
115-1-60/50
15A
380/415-1-60
15A
VOLTAGE RANGE
UNIT POWER
380-415/3/60
OVER CURRENT PROTECTION,
SEE NOTE B
MIN
MAX
10A
15A
10A
15A
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.
MIN.
342
FORM 150.66-NM3
ISSUE DATE: 09/25/2020
NF DISC Sw
30 A / 240V
30A / 415V
MAX.
440
JOHNSON CONTROLS
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Troubleshooting
