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1. Unpack the heater from the carton and remove the front panel.
Note: The front panel screws are recessed at the bottom of the
front panel at each end of the heater.
2. Remove the desired terminal box covers and wire supply
knockouts from the terminal box area.
3. Use trim frame as a template to drill holes into the top, bottom
and sides of the heater using a 1/8" diameter drill bit.
4. Secure the trim frame using the #8 screws provided with the
trim kit.
Note: All wiring should be done in accordance with local codes
and the National Electrical Code by a qualified person.
1. Run branch circuit wiring of proper voltage and wire size to the
location of the terminal box of the heater.
TIP: Supply wire entry is commonly made into one heater.
Through wiring (factory furnished) can be used for connection
to adjacent heaters.
Recommended minimum supply wire sizes are listed in the table
below:
Maximum Watts Per Circuit Using 75°C. Wire
Rough In
Wire Size
120V
208V
14
1440
2496
Copper
12
1920
3328
Wire
10
2880
4992
2. Wire all heaters and controls in accordance with the appropri-
ate wiring diagram.
TIP: Sample wiring diagrams are provided on page 4.
3. Wrap the supply ground wire to the green painted ground
screw and tighten.
Note: When heaters are mounted end to end, remove the fin-
ishing end plate, install a chase nipple and locknut in the ter-
minal box to insure grounding continuity, and to protect the
wiring. (Figure 4)
Chase Nipples
Installation Between
Heaters Butted Together
Ground Wire Running
Through Chase Nipple
Where heaters are spaced apart, remove the finishing plate and use
rigid conduit (provided by customer) for through wiring and
ground continuity. Do not exceed the allowable number of con-
ductors allowed by the National Electrical Code.
INSTALLATION (Recessed Wall)
240V
277V
347V
480V
600V
2880
3324
4164
5760
7200
3840
4432
5552
7680
9600
5760
6648
8328
11520
14400
Figure 4
TIP: The bottom trim may be omitted if the heater is to be
installed at floor level.
5. Prepare the wall recess opening to accept the heater.
TIP: Leave approximately 1/2" clearance to insert the heater
cabinet.
6. Secure the back plate into the recess opening using suitable
fasteners (Provided by customer).
7. Proceed to the wiring instructions.
WIRING
Terminal Box Volumes (Cubic Inches)
Heater Style
CAF-20
4. Do a final and complete check of all wiring then replace the
terminal box covers.
5. The front panel may now be installed.
WARNING: To prevent the risk of fire, do not oper-
ate the heater without the front cover in place.
Insert the top of the front panel into the top flange of the heater.
Push the bottom flange of the front panel into place and secure
with screws.
Figure 5
Maintenance
The CAF-20 series heaters contain no moving parts. Occasional
vacuum cleaning of the cabinet interior is the only maintenance
required.
WARNING: Before removing the front cover for
cleaning, make certain supply power is discon-
nected.
Left Hand Box
Right Hand Box
4" Wide
5" Wide
379.75
474.75
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