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INSTALLATION
SINGLE POINT HEATER INSTALLATION
NOTE:
Thermostat used must be capable of energizing "G"
(indoor fan) on a call for "W" (heating). If "G" is not energized
system malfunction will occur.
1. Open all electrical disconnects and install lockout tag before
beginning any installation or service work.
2. Check for proper equipment model number from list.
3. Verify that unit ductwork is installed per base unit
instructions.
4. Remove unit electrical access panel (See Fig. 1).
5. Locate and remove the heater access cover plate inside unit
access panel (See Fig. 3). Save screws.
6. Remove electric heater from the packaging.
7. Install heater, sliding assembly carefully through access
hole. Ensure that mounting holes of heater align with
mounting holes on the unit. Secure heater assembly with
screws provided.
8. Attach provided heater wiring labels at appropriate locations
(see Fig. 11 or Fig. 12).
9. Dress wires with wire ties provided.
ELECTRICAL
ACCESS
ELECTRIC
WARNING
PANEL
HEAT
LABEL
ACCESS
PANEL
Fig. 1 - - Unit Access and Label Location
SINGLE POINT ELECTRICAL CONNECTION
NOTE: All electrical connections, wire sizes and type of conduit
shall meet the National Electric Code (NEC) and state and local
codes (or International Electric Code) as applicable.
NOTE: Use minimum 75°C copper wire only.
1. Make sure all disconnects are still open and tagged out as
2. Mark the main unit nameplate with an "X" for the electric
3. Connect low voltage wires as shown in unit schematic
ELECTRICAL
RATING
4. Insert field power line through the electrical heater access
LABEL
LOCATION
A10343
IMPORTANT: Heaters with factory installed fuses may be
installed on a branch circuit protected by either a fuse or circuit
breaker. For all other heaters, the branch circuit must be protected
by a fuse or circuit breaker supplied by others.
5. Connect stripped wires from heater to compressor contactor
NOTE: Dress wires with wire ties provided. For fused heaters, use
pre- -mounted wire tires inside of fuse box cover to secure and
strain relieve wires.
6. Separate all wires from incoming power leads.
7. Close electrical access panel.
DUAL POINT HEATER INSTALLATION
NOTE:
before completing the follow steps.
1. Open all electrical disconnects and install lockout tag before
2
7/8"
(22.2 mm)
7/8"
7/8"
7/8"
8-3/4"
(222.25 mm)
(63.5 mm)
2-1/2"
Fig. 2 - - Second Power Line Access Hole Location
required previously.
heater size being installed. Refer to the electrical data
marked with an "X" on the nameplate for wire and
maximum over current protection sizing.
diagrams found on the base unit installation instructions.
These connections must be made in the 24v barrier section
inside the unit panel (See Fig. 3).
panel hole (see Fig. 6 or 7) and connect to electric heater as
shown in their respective wiring diagram. Fused electrical
heaters field lines will be connected to the fuse block lugs
(see Fig. 10) and non fused electric heater field lines will be
connected to heater leads using wire nuts. Ground electrical
equipment in the appropriate locations.
leads using supplied wire nuts according to their heater
wiring diagram.
Complete single point heater installation procedures
beginning any installation or service work.
ELECTRIC
HEAT
ACCESS
PANEL
A10338
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