10. Install optional controls (if required) into the heater section
in accordance with the Instruction Sheet packaged with the
control.
11. To wire the heater, thermostat, reduce wattage or convert
from single to three-phase voltage, refer to “Field
Conversion for Lower Wattage Rating” or “Conversion for
3ø Installation” on page 7 and wiring diagrams, Figure 13,
page 7.
12. Position the heater section over the studs in the recess
mounting box (Figure 8).
Note:
The end of the heater section with the terminal block must
be posi tioned at the end of the recess mounting box where the
supply wiring enters.
13. Push the heater section onto the studs and securely tighten
the four (4) nuts (removed from step 4) on the studs to
secure the heater section to the recess mounting box
(Figure 8).
14. Connect the ground wire to the green ground screw on the
recess mounting box.
15. Position the recess face plate over the heater
section/recess mounting box, making sure that the thumb
pins are in the holes in the heater section.
16. With the recess face plate seated firmly against the heater
section, depress the “thumb pins”. This will cause the
thumb pins to expand and will temporarily hold the recess
face plate in place.
Note:
The thumb pins are an aid to help position and hold the
recess face plate during installation. Additional support (Step 17)
is required. See Warning, page 2.
17. Install and securely tighten four screws (supplied) to secure
the recess face plate to the heater section (Figure 8).
18. Install discharge air grilles. (Refer to “Installation of
Discharge Air Grilles.”)
Installation of Discharge Air Grilles
(See Figures 9, 10 and 11)
1. Refer to “Adjustable Discharge Grilles Custom Air Flow
Patterns”, page 6 of this instruction sheet to determine
desired air flow direction.
2. Place the two discharge grilles onto a flat surface in the
desired configura tion with tabs on each end of grilles
upward.
3. Fit the two louver guides over the two discharge grilles as
shown in Figure 9.
4. While holding the assembly together with both hands, fit one
side of assembly into the opening of the enclosure, and slide
this side inward while fitting the opposite side into the enclo-
sure. (See Figure 10.) Slide the assembly into position so
that the bottom portion of each guide locks into the opening.
FAILURE TO INSTALL THE FOUR MOUNTING NUTS COULD
RESULT IN THE HEATER FALLING (SEE FIGURE 8).
TO REDUCE THE RISK OF FIRE OR PERMANENT DAMAGE
TO THE HEATER, THERMOSTAT MUST BE WIRED AS
SHOWN IN WIRING DIAGRAM. DO NOT CONNECT THER-
MOSTAT IN MAIN POWER LINES BECAUSE IT WILL
DEFEAT THE FAN DELAY FUNCTION.
THE HEATER ENCLOSURE MUST BE SECURELY MOUNT-
ED TO CEILING OR FRAMING CAPABLE OF SUPPORTING
THE HEATER (45 LBS/20.4 KG). FAILURE TO DO SO COULD
ALLOW HEATER TO FALL.
5
1/2” (12.2 mm) Knockout
7/8” & 1
1
/8”
(22.2 & 28.5 mm)
Nested Knockout
1/2” (12.2 mm)
Knockout
Cable or
Conduit
Connector
7/8” & 1
1
/
8
”
(22.2 & 28.5 mm)
Nested Knockout
Recess
Mounting
Box
Optional
Disconnect
Switch (CDFDS)
Screw (2)
Recess
Mounting
Box
F
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e 7
7
Grounding
Screw
Power Supply
Cable
Stud (4)
Nut (4)
Thumb
Pin Hole
Heater
Section
Screw (4)
Recess Face
Plate
Insure that “Thumb Pin” is pulled out
before positioning the face plate on
the heater section. Depress “Thumb
Pin” after face plate is sealed firmly
against the heater section.
F
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8
Thumb Pin
