6
Wiring
Cord Preparation for Chromalox Portable Heaters
1. Determine the gage and number of conductors from the
tabulation below using amps and phase from the heater
nameplate.
It is not recommended that cord exceed 50 feet in length.
Max. Heater
Amps
Chromalox
Cord Kit
Model No.*
Cord Ga/No. Cond. & Type
1 Phase
3 Phase
15
PLC-2514-4
14/4 SO
20
PLC-2512-4
12/4 SO
30
PLC-2510-3
10/3 SO
25
PLC-2510-4
10/4 SO
40
PLC-2508-3
8/3 SO
35
PLC-2508-4
8/4 SO
55
PLC-2506-3
6/3 SO
45
PLC-2506-4
6/4 SO
60
PLC-2504-4
4/4 SO
*Includes 90 degree fitting and 25 foot of cord, reducers and locknut
2. Strip off outer jacket of cord and insulation from lead
wires. The tabulation below provides the strip dimen-
sions for the various Chromalox portable heaters. See
the nameplate on the heater for the Model number.
Model No.
A
B
C
DRA - (all suffixes)
8”
1”
0.5”
"A"
"B" (Insulation strip dimension for ground wire).
"C" (Insulation strip dimension for power wires).
3. Slide fitting onto cord and tighten knurled nut to secure
fitting to cord.
4. Select plug to match electrical rating of cord.
5. On opposite end of cord prepare end as directed by in-
structions that are provided with the plug.
6. Attach cord assembly to heater as shown in Fig. 2 below:
Run wire tie through slots in bracket
and over cord. Pull tab of wire tie to
provide cord strain relief.
Power
wires
Ground
wire
90° fitting
Figure 2
Operation
Thermostat
Heaters include a bimetal thermostat for the automatic con-
trol of the exiting air temperature. The thermostat knob con-
trols the heating elements and fan functions. The heater and
fan are deenergized with the knob in the extreme clockwise
position.
Turning the knob clockwise from the off position to the fan
position will energize the fan only, for use in summer cooling.
The adjustment knob controls power to the heater and fan
when turned further in the clockwise direction, with the high-
est temperature setting in the extreme clockwise position.
The temperature setting in the heater mode is approximately
40°F in the low setting and 100°F at the highest setting.
NOTE: The adjustment knob should be turned to the fan only
setting after use for heating. The fan should be left on for at
least 3 minutes to remove residual heat from the unit and to
prevent overheating of the housing.