Carrier bryant 577C-C Installation Instructions Manual Download

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f. Connect 5 pin plug and 4 pin plug to indoor blower

motor.

g. Reinstall blower access panel (see Fig. 20).

3. Restore electrical power to unit. Start unit and check for

proper blower rotation and motor speeds during heating and
cooling cycles.

Induced Draft (combustion air) Blower Assembly

The induced--draft blower assembly consists of the inducer motor,
the blower housing, and the induced--draft blower wheel.
Clean periodically to assure proper airflow and heating efficiency.

Inspect blower wheel every fall and periodically during the heating
season. For the first heating season, inspect blower wheel

bimonthly to determine proper cleaning frequency.
To inspect blower wheel, remove draft hood assembly. Shine a

flashlight into opening to inspect wheel. If cleaning is required,

remove induced--draft blower assembly as follows:

1. Remove control access panel (See Fig. 20).
2. Remove the 5 screws that attach induced--draft blower as-

sembly to the flue collector box cover.

3. Slide the assembly out of the unit. (See Fig. 22). Clean the

blower wheel. If additional cleaning is required, continue

with Steps 4 and 5.

4. To remove blower wheel, remove 2 setscrews.

5. To remove inducer motor, remove screws that hold the

inducer motor to the blower housing.

6. To reinstall, reverse the procedure outlined above.

Flue Gas Passageways

To inspect the flue collector box and upper areas of the heat

exchanger:

1. Remove the induced draft blower assembly according to

directions in the Induced Draft Blower Assembly section.

2. Remove the 11 screws holding the flue collector box cover

(See Fig. 19) to the heat exchanger assembly. Inspect the
heat exchangers.

3. Clean all surfaces, as required, using a wire brush.

Limit Switch

Remove blower access panel (see Fig. 20). Limit switch is located

on the fan partition.

Burner Ignition

Unit is equipped with a direct spark ignition 100 percent lockout
system. Ignition module (IGC) is located in the control box (See

Fig. 19). Module contains a self--diagnostic LED. During
servicing, refer to label diagram or Table 7 in these instructions for

LED interpretation.
If lockout occurs, unit may be reset by either momentarily
interrupting power supply to unit or by turning selector switch to

OFF position at the thermostat.

Main Burners

At the beginning of each heating season, inspect for deterioration
or blockage due to corrosion or other causes. Observe the main

burner flames and adjust, if necessary.
Removal of Gas Train
To remove the gas train for servicing:

1. Shut off main gas valve.
2. Shut off power to unit and install lockout tag.
3. Remove control access panel (See Fig. 20).
4. Disconnect gas piping at unit gas valve.
5. Remove fan partition mounting bracket (2 screws located

on the left side of control compartment on the fan partition
panel). Slide bracket forward, bottom first, to remove. (See
Fig. 19.)

6. Remove wires connected to gas valve. Mark each wire.
7. Remove the mounting screw that attaches the burner rack to

the unit base (See Fig. 19).

8. Partially slide the burner rack out of the unit (see Fig. 19

and 22). Remove ignitor and sensor wires at the burner as-

sembly. Remove wires to rollout switch.

9. Slide the burner rack out of the unit (See Fig. 19 and 22).

10. To reinstall, reverse the procedure outlined above.
11. Check all connections for leaks.

FIRE, EXPLOSION HAZARD

Failure to follow this warning could result in personal

injury, death or property damage.
Do not purge gas supply into the combustion chamber. Do

not use a match or other open flame to check for gas leaks.

Use a commercially available soap solution made

specifically for the detection of leaks to check all

connections. A fire or explosion may result causing

property damage, personal injury or loss of life.

WARNING

Outdoor Coil, Indoor Coil, and Condensate Drain Pan

Inspect the condenser coil, evaporator coil, and condensate drain

pan at least once each year.
The coils are easily cleaned when dry; therefore, inspect and clean

the coils either before or after each cooling season. Remove all
obstructions, including weeds and shrubs, that interfere with the

airflow through the condenser coil.
Straighten bent fins with a fin comb. If coated with dirt or lint,
clean the coils with a vacuum cleaner, using the soft brush

attachment. Be careful not to bend the fins. If coated with oil or
grease, clean the coils with a mild detergent and water solution.

Rinse coils with clear water, using a garden hose. Be careful not to

splash water on motors, insulation, wiring, or air filter(s). For best
results, spray condenser coil fins from inside to outside the unit. On

units with an outer and inner condenser coil, be sure to clean
between the coils. Be sure to flush all dirt and debris from the unit

base.
Inspect the drain pan and condensate drain line when inspecting

the coils. Clean the drain pan and condensate drain by removing all

foreign matter from the pan. Flush the pan and drain trough with
clear water. Do not splash water on the insulation, motor, wiring, or

air filter(s). If the drain trough is restricted, clear it with a
“plumbers snake” or similar probe device.

Integrated
Gas Unit
Controller
(IGC)

Induced Draft
Motor

Rollout
Switch

Mounting
Screw