Carrier 48PD05 Installation Manual download pdf (Page 10)

Table 1 – Indoor Air Filter Data

UNIT

SIZE

FIL TER QUANTITY FILTER SIZE

03---07

16x20x(2or4)in

(406.4 x 508 x [50.8 or 101.6]) mm

08---14

20x25x(2or4)in

(508 x 635 x [50.8 or 101.6]) mm

20x20x(2or4)in

(508 x 508 x [50.8 or 101.6]) mm

Alarm Status

(Units with ComfortLinkt Controls)

The Scrolling Marquee display incorporates an Alarm Status LED

that turns on to indicate an active alarm or alert. These alarms and

alerts are in addition to those that are indicated by the Integrated

Gas Control (IGC). The ComfortLink control active alarm codes

and alarm history can be viewed with the Scrolling Marquee or

other Carrier Comfort Networkr (CCN) devices. Alarms may also

be configured to broadcast automatically on CCN. If the unit will

not operate and the Alarm Status LED is on, contact the local

dealer and request service.

Integrated Gas Controller (IGC)

The IGC board incorporates an LED that emits a flashing light to

indicate an alarm code. If the furnace section will not operate and

the LED is flashing a code (1 to 9 flashes in succession), contact

your dealer and request service.

NOTE: Make note of the flash code before powering off the unit.

The alarm codes clear after power cycle.

Combustion Air and Vent System

The combustion area and vent system should be visually inspected

before each heating season. The normal accumulation of dirt, soot,

rust, and scale can result in loss of efficiency and improper

performance if allowed to build up.

FIRE HAZARD

Failure to follow this warning could result in personal injury,

death, and/or property damage.

If your unit makes and especially loud noise when the main

burners are ignited, shut down the heating section and call

your dealer.

WARNING

See Fig. 1 and proceed as follows to inspect the combustion area

and power--venting system of your unit.

7. Turn off electrical power (install disconnect tag) and gas

supply to your unit (follow Shut--Off Steps 1-- 3).

8. Open burner compartment access panel.

9. Using a flashlight, carefully inspect the burner areas for dirt,

soot, or scale.

EQUIPMENT DAMAGE HAZARD

Failure to follow this caution may result in damage to unit.

If dirt, soot, rust or scale accumulations are found, call your

dealer and do not operate your heating section.

CAUTION

10. When you have completed your inspection, follow the

start --up procedures in this manual to restore your unit to

operation.

11. Observe unit heating operation, and watch the burner flame

with the access panel removed to see if it is bright blue. If

you observe a suspected malfunction, or that the burner

flames are not bright blue, call your dealer. Some yellow

flame may be present due to the panel being removed.

12. Close burner compartment access panel.

Heat Exchanger

To ensure dependable and efficient heating operation, the heat

exchanger should be checked by a qualified maintenance person

before each heating season, and cleaned when necessary. This

checkout should not be attempted by anyone not having the

required expertise and equipment to do the job properly. Checking

and/or cleaning the heat exchanger involves removing the gas

controls assembly and the flue collector box cover and, when

completed, reinstalling the gas controls assembly for proper

operation. The flue collector box cover must be reinstalled with

“red” R TV correctly so that a proper seal is maintained. Contact

your dealer for the required periodic maintenance.

Evaporator, Condenser and Combustion Fan

Motors

The indoor fan, outdoor fan, and combustion fan motors have

permanently sealed bearings, so no field lubrication is necessary.

Indoor Fan, Belt and Pulleys

Check quarterly the condition of the fan wheel(s), pulleys, fan belt

and the belt tension. If there is any loose part or belt wear, contact

your dealer and request service.

Indoor Fan S haft Bearings (Sizes 03--14)

The indoor fan has permanently sealed bearings, so no field

lubrication is necessary.

Indoor Fan Shaft Bearings (Size 16)

Lubricate bearings at least every 6 months with suitable bearing

grease. Typical lubricants are given below:

MANUFACTURER LUBRICANT

Texaco R e g a l A F B --- 2 *

Mobil Mobilplex EP No. 1

Sunoco Prestige 42

Texaco Multifak 2

* Preferred lubricant because it contains rust and oxidation inhibitors.

Refrigerant Circuits

The refrigerant circuits are difficult to check for leaks without the

proper equipment; therefore, if inadequate cooling is suspected,

contact your dealer for service.

Evaporator and Condenser Coils

Cleaning of the coils should only be done by qualified service

personnel. This procedure should be performed prior to cooling

operation or more frequently should conditions require. Contact

your dealer for the required annual maintenance.

Condensate Drain

The drain pan and condensate drain line should be checked and

cleaned at the same time the cooling coils are checked by your

dealer.

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Carrier 48PD05 Installation Manual Page 10

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