Carrier 48HJ004---007, 48HE003---006 Flue Gas Passageways, Combustion-Air Blower

		48HE - 2 TON CHARGING CHART				F	C
						125	52
						115	46
						105	41
		Suction Line Temperature (deg C)				95	35
						85	29
	5.5	10.5	15.5	20.5	25.5	75	24
	105.0
	100.0					698.0
(psig)	95.0					648.0	(kpa)
Line Pressure	90.0						Line Pressure
	85.0					598.0
	80.0					548.0
Suction	75.0						Suction
						498.0
	70.0
	65.0					448.0
	42	52	62	72

Suction Line Temp (deg F)

C06148

Fig. 68 ---Cooling Charging Chart,

Standard 48HE003

			48HE - 3 TON CHARGING CHART					F	C
								115	46
								105	41
								95	35
			Suction Line Temperature (deg C)					85	29
								75	24
	6.1		11.1		16.1		21.1
	95.0							648.2
(psig)									(kpa)
Pressure	85.0							598.2	Pressure
Line								548.2	Line
Suction	75.0								Suction
								498.2
	65.0							448.2
	43	48	53	58	63	68	73	78

Suction Line Temp (deg F)

C06149

Fig. 69 ---Cooling Charging Chart,

Standard 48HE004

48HE - 4 TON CHARGING CHART	F	C
	115	46
	105	41
	95	35
	85	29
Suction Line Temperature (deg C)	75	24

	5.6		10.6	15.6		20.6		25.6
								692.0
(psig)	97.0								(kpa)
								642.0
Pressure									Pressure
	87.0
								592.0
Line									Line
Suction	77.0							542.0	Suction
	67.0							492.0
	42	47	52	57	62	67	72	77

Suction Line Temp (deg F)

C06150

Fig. 70 ---Cooling Charging Chart,

Standard 48HE005

		48HE - 5 TON CHARGING CHART						F	C
								115	46
								105	41
								95	35
			Suction Line Temperature (deg C)					85	29
								75	24
	0.0	5.0		10.0	15.0		20.0	25.0
	115.0							810.0
(psig)	105.0							710.0	(kpa)
Pressure	95.0							610.0	Pressure
	85.0
Line									Line
								510.0
Suction	75.0								Suction
								410.0
	65.0
	55.0							310.0
	42	47	52	57	62	67	72	77

Suction Line Temp (deg F)

C06151

Fig. 71 ---Cooling Charging Chart,

Standard 48HE006

TO USE COOLING CHARGING CHARTS, UNITS WITH HUMIDI-MIZER™ADAPTIVE DEHUMIDIFICATION

SYSTEM

Refer to charts (Fig. 64-67) to determine the proper leaving condenser pressure and temperature.

Example (Fig. 64):

Leaving Condenser Pressure . . . . . . . . . . . . . . . . . 250 psig Leaving Condenser Temperature . . . . . . . . . . . . . . . 105°F

NOTE: When using the charging charts, it is important that only the subcooling/reheat dehumidification coil liquid line solenoid valve be energized. The subcooling/reheat dehumidification coil liquid line solenoid valve MUST be energized to use the charging charts and the outdoor motor speed controller jumpered to run the fan at full speed.

Step 10 —Flue Gas Passageways

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

1.Remove the combustion blower wheel and motor assembly according to directions in Combustion-Air Blower section below.

2.Remove the 3 screws holding the blower housing to the flue cover.

3.Remove the flue cover to inspect the heat exchanger.

4.Clean all surfaces as required using a wire brush.

Step 11 —Combustion-Air Blower

Clean periodically to ensure proper airflow and heating efficiency. Inspect blower wheel every fall and periodically during heating season. For the first heating season, inspect blower wheel bimonthly to determine proper cleaning frequency.

To inspect blower wheel, remove draft hood and screen. Shine a flashlight into opening to inspect wheel. If cleaning is required, remove motor and wheel as follows:

1.Slide burner access panel out.

2.Remove the 5 screws that attach induced-draft motor assembly to the vestibule cover.

3.Slide the motor and blower wheel assembly out of the blower housing. The blower wheel can be cleaned at this point. If additional cleaning is required, continue with Steps 4 and 5.

4. To remove blower from the motor shaft, remove

2setscrews.

5.To remove motor, remove the 4 screws that hold the motor to mounting plate. Remove the motor cooling fan

48HE,HJ

55