Carrier CRHEATER101A00 Installation Instructions Manual page 16

Remove the heater cover at Heater 1 position. Save
cover and screws.
c. Heater CRHEATER113B00-116B00, 265A00-269A00
ONLY:
Remove the heater cover at Heater 2 position. Save
cover and screws.
d. Heater CRHEATER128B00,
360A00-377A00, 380A00-384A00 ONLY:
Remove both heater covers. Save the screws. Discard the
covers.
2. Open the heater package(s) and remove the heater module,
heater support track (where provided), heater cover (where
provided), screws, wiring label, miscellaneous parts.
3. All heaters EXCEPT
301A00, 360A00-362A00,
379A00:
Install heater slide bracket(s) from the heater kit through the
bottom of the heater mounting hole(s) and fasten each with
the two screws provided. (See Fig. 19.)
4. Install the heater module(s) in the heater support bracket
opening(s). On two-heater installations where there is no
key-forced heater position (see Fig. 14 for example of notch
in slot 2 that makes a key forced heater position), install the
heater with the higher kW rating in heater position 1. The
installation uses 8 screws (4 per module).
a. Heaters 101A00-109A00, 265A00-269A00:
To install module, insert heater frame into location notch
in heater bracket opening in unit and slide heater through
the opening. Fasten heater module to heater mounting
bracket with the 4 screws saved from Step 1.
(See Fig. 18.)
b. Heater CRHEATER301A00,
371A00-373A00 only:
To install module, insert both heater frames into location
notches in heater bracket opening in unit and slide heater
through the opening. Fasten heater module to heater
mounting bracket with the 8 screws saved from Step 1.
(See Fig. 20.)
c. Heater CRHEATER128B00-129B00 only:
To install module, insert heater frame into slot 2 in heater
bracket opening in unit, engage flange on heater with
track in unit, and slide heater through the opening.
Fasten heater module to heater mounting bracket with 8
screws saved from Step 1. (See Fig. 20.)
d. All other heaters:
To install module, engage flange on heater with track in
unit and slide heater through mounting bracket opening.
Fasten heater module to heater mounting bracket with
the 4 screws saved from Step 1. (See Fig. 19.)
Single-phase heater conversion
5. 208/230-v heaters 101A00-104B00, 360A00, 361A00 are
factory-wired for 3-phase applications but can be converted
to single-phase by changing one wire as described below.
Three-phase applications: Skip to Step 6 and see Fig. 27. For
single-phase applications, rewire the heater as follows (see
Fig. 15):
Connect RED wire provided with kit to Heater Relay (HR)
and to L1 as shown.
a. Disconnect YELLOW wire from HR Terminal 3 and
reconnect to HR Terminal 1.
b. Using the wire tie provided, fasten the RED wire to
heater power wire harness near existing wire tie on
heater module. This provides strain relief for the RED
wire. (See Fig. 16 and 17.)
Connect the BLACK and RED conductors in the heater
129B00, 301A00,
CRHEATER101A00-109A00,
371A00-373A00, 378A00,
360A00-362A00,
power wire harness to the same L1 pole on single point
box TB or fuse block. Connect the BLUE and
YELLOW conductors in the heater power wire harness
to the same L2 pole on single point box TB or fuse
block. (See Fig. 15.)
6. Route power wires from heater module(s) through the foam
bushing in the center partition and into the single point box.
(See Fig. 1.) Connect to terminal block or fuse blocks per
schematics in Appendix A,B,C,D. See the tables at beginning
of each Appendix to identify the appropriate figure.
All heaters are
CRHEATER111A00, 112A00, 128B00, 129B00, 268A00,
269A00, 301A00, 318A00, 360A00-364A00,
371A00-373A00, and 380A00, which are dual bank heaters.
These heaters will be wired as two heaters (i.e., 6, 9, or 12
leads). Fusing is shown pictorially on the unit wiring
schematic label.
If no single point box is required for the unit and heater
combination, run the heater power supply wiring through the
grommet holes to the main unit control box's field power
connection points or to optional factory-supplied disconnect.
7. Factory control wiring for heaters runs from unit control box
to terminal block TB-4, mounted in the heater compartment
above module 1 location. (See Fig. 6 and 21-26.) Connect
the heater control wiring at TB-4.
NOTE: The view shown is for CRHEATER113B00-116B00. The
restrictor plate is also present on the CRHEATER128B00-129B00 that
has the larger heater mounting plate.
Fig. 13 — Restrictor Plate Views
16
single bank heaters
Restrictor Plate
except