I PORTANT SAFETY INFOR ATION
I PORTANT NOTICE: This heater is wired so the fan will come
on with no delay when energized as the thermostat is calling for
heat. When the thermostat is satisfied, the fan must continue to
run until the heater has cooled to a safe temperature. If an
external thermostat or controls are to be used, DO NOT wire
heater so thermostat shuts power to fan. The heater will be
damaged and the warranty will be voided. Thermostat must be
connected as shown on wiring diagram (Figure 13, page 7) for
correct operation.
NOTE: Field wiring must be #10 AW min. rated 90°C min. Max
run length 125’ at 208V/5 kW. Wiring Compart-ment Volume:
252 in3(4130 cm3).
INSTALLATION
Installation of Surface ounted Heaters
(See Figures 1 and 2)
1. Determine the desired location of the heater. See Warning
No. 4, page 1 for minimum mounting clearances.
2. Remove Surface Mounted Heater assembly from carton.
Heater assembly includes (1) surface mounting plate,
(1) heater, (1) surface mount enclosure and (1) set of
discharge grilles, Figure 2, page 3.
3. Remove Surface Mount Enclosure from assembly. Remove
four (4) nuts from studs so heater can be removed from sur-
face mounting plate. Do not discard nuts since these will be
used in Step 11 to mount heater back on to surface plate.
4. Remove one of the knockouts and install a cable or conduit
connector.
5. Install the optional disconnect switch CDFDS (if required) as
shown in Figure 1. Refer to accessory installation manual for
proper wiring.
6. Run the power supply cable through the connector, leaving
about 8” (203 mm) of wire inside the surface mounting plate.
(Power supply cable must be #10 AW min. rated 90°C min-
imum. Maximum run length 125' at 208V/5kW.)
7. Position the surface mounting plate against the ceiling and
secure with bolts or screws (Figure 2). See Warning No. 9,
page 1. Connect the ground wire to the green ground screw
on the surface mounting plate.
8. Install optional controls (if required) into the heater section in
accordance with the Instruction Sheet packaged with the
control.
9. 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.
10. Position the heater section over the studs on the surface
mounting plate (Figure 2).
NOTE: The end of the heater section with the terminal block
must be positioned at the end of the surface mounting plate
where the supply wiring enters.
11. Push the heater section onto the studs and securely tighten
four (4) nuts (removed from step 3) on the studs to secure the
heater section to the surface mounting plate (Figure 2).
NOTE: Insure that the “thumb pin” in each end of the discharge
grille opening is pulled outward to allow the body of the thumb
pins to fit into the holes in the heater section (Figure 2).
12. Position the surface mounting enclosure over heater sec-
tion/surface mounting plate, making sure that the thumb
pins are in the holes in the heater section.
13. With the surface enclosure seated firmly against the heater
section, depress the “thumb pins”. This will cause the
thumb pins to expand and will temporarily hold the surface
enclosure in place.
NOTE: The thumb pins are an aid to help position and hold the
surface mounting enclosure during installation. Additional sup-
port (step 14) is required. See Warning.
14. Install and securely tighten four screws (supplied) to secure
the surface mounting enclosure to the heater section
(Figure 2).
15. Install discharge air grilles. (Refer to “Installation of
Discharge Air rilles”, page 6.)
FAILURE TO INSTALL THE FOUR SCREWS COULD ALLOW
THE SURFACE WRAPPER TO FALL (SEE FI URE 2).
FAILURE TO INSTALL THE FOUR MOUNTIN NUTS COULD
RESULT IN THE HEATER FALLIN (SEE FI URE 2).
TO REDUCE THE RISK OF FIRE OR PERMANENT DAMA E
TO THE HEATER, THERMOSTAT MUST BE WIRED AS
SHOWN IN WIRIN DIA RAM. DO NOT CONNECT THER-
MOSTAT IN MAIN POWER LINES BECAUSE IT WILL
DEFEAT THE FAN DELAY FUNCTION.
FAILURE TO INSTALL THE FOUR SCREWS COULD ALLOW
THE SURFACE ENCLOSURE TO FALL (SEE FI URE 2).
FAILURE TO INSTALL THE FOUR MOUNTIN NUTS TO
SECURE HEATER TO MOUNTIN FRAME COULD RESULT
IN THE HEATER FALLIN (SEE FI URE 2).
2
Optional
Disconnect
Switch
(CDFDS)
Screw (2)
7/8”(22.2 mm) & 11/8”
(28.6 mm) Nested
Knockout
1/2”(12.7 mm)
Knockout
Surface
Mounting
Plate
7/8”
(22.2 mm)
Knockout
Cable or Conduit
Connector
Surface
Mounting Plate
1/2” (12.7 mm) Knockout
FFiiuurree 11
