Carrier 50JZ 024-060 High Airflow, Time Delay Profile, When Thermostat is SET on Continuous FAN

HIGH VOLTAGE
POWER LEADS	POWER
(SEE UNIT WIRING
	SUPPLY
LABEL)
GND	FIELD-SUPPLIED
	FUSED DISCONNECT

a. GAS HEAT/CFM—SELECT GAS HEAT INPUT SIZE

Factory selected gas heat size should correspond to unit label.

b. AC/HP SIZE—SELECT SYSTEM SIZE INSTALLED

Factory selected air conditioner size should correspond to

capacity of unit installed. Installer should verify air conditioner

size to ensure that airflow delivered falls within proper range

for the size unit installed. This applies to all operational modes.

c. SYSTEM TYPE—SELECT SYSTEM TYPE INSTALLED

CONTROL BOX

	BLK(DH)
	YEL(Y)
	GRN(G)
LOW-VOLTAGE	RED(R)
POWER LEADS
(SEE UNIT	BRN(C)
WIRING LABEL)
	WHI(W1)
	GRA(W2)

DHUM

Y

G

R

C

W1

W2

THERMOSTAT (TYPICAL)

Factory selected on 48GP for AC-Air conditioner.

For Gas Heat/Electric Cool Unit–AC must be selected.

d. AC/HP CFM ADJUST—SELECT NOMINAL, LOW, OR

HIGH AIRFLOW

The AC/HP CFM Adjust select is factory set to the High-HI

(NOM for 060) tap. The CFM Adjust selections NOM/LO will

regulate airflow supplied for all operational modes, except

non-heat pump heating modes. HI provides 15 percent airflow

over nominal unit size selected and LO provides 10 percent

airflow below nominal unit size selected. Adjust selection

options are provided to adjust airflow supplied to meet indi-

SPLICE BOX

LEGEND

Field Control-Voltage Wiring

Field High-Voltage Wiring

C01027

Fig. 4—50GL High- and Control-Voltage

Connections

HIGH VOLTAGE
POWER LEADS	POWER
(SEE UNIT WIRING
	SUPPLY
LABEL)
GND	FIELD-SUPPLIED
	FUSED DISCONNECT

vidual installation needs for such things as noise, comfort, and
humidity removal (See Fig. 8, D as indicated).
e. ON/OFF DELAY—SELECT DESIRED
TIME DELAY PROFILE
Four motor operation delay profiles are provided to customize
and enhance system operation (See Fig. 8, E as indicated).
Selection options are:
(1.) The standard 90 sec off delay (Factory Setting) at 100
	percent airflow in cooling mode. In heating mode, IGC
	will control 45 sec on delay with no airflow and 45 sec off
	delay.
(2.)	A 30 sec cooling delay with no airflow/ 90 sec off delay at
	100 percent airflow profile is used when it is desirable to
	allow system coils time to cool-down in conjunction with
	the airflow in heating mode.
(3.)	A no delay option used for servicing unit or when a

CONTROL BOX

	BLK(DH)
	YEL(Y)
	GRN(G)
LOW-VOLTAGE	RED(R)
POWER LEADS
(SEE UNIT	BRN(C)
WIRING LABEL)
	WHI(W1)
	GRA(W2)
	ORN(0)

DHUM

Y

G

R

C

W1

W2

O

THERMOSTAT (TYPICAL)

	thermostat is utilized to perform delay functions in cooling
	mode. In heating mode IGC will control 45 sec on delay
	with no airflow and 45 sec off delay.
(4.) Not recommended for 48GP
f. CONTINUOUS FAN—SELECT DESIRED FAN SPEED
WHEN THERMOSTAT IS SET ON CONTINUOUS FAN
(1.)	LO speed—Factory setting, 50 percent cooling mode
	airflow.
(2.)	MED speed—Move connector to MED, 65 percent cooling
	mode airflow.
(3.)	HI speed—Move connector to HI, 100 percent cooling
	mode airflow (See Fig. 8, F as indicated).

SPLICE BOX

LEGEND

Field Control-Voltage Wiring

Field High-Voltage Wiring

C01028

Fig. 5—50JZ High- and Control-Voltage

Connections

The ICM motor uses the selected taps to modify its operation to a pre-programmed table of airflows.

The unit must be configured to operate properly with system components with which it is installed. To successfully configure a basic system (see information printed on circuit board label located next to select pins), move the 6 select wires to the pins which match the components used (See Fig. 8).

g. LOW-VOLTAGE CIRCUIT FUSING AND REFERENCE

The low-voltage circuit is fused by a board-mounted 5–amp

automotive fuse placed in series with the transformer SEC2 and

the R circuit. The C circuit of the transformer is referenced to

chassis ground through a printed circuit run at SEC1 connected

to metal standoff marked with ground symbol.

h. BASIC UNIT CONFIGURATION

The following basic configuration of the indoor motor will

provide ARI rated performance of the 48GP. This BASIC

CONFIGURATION should be used when the rated ARI perfor-

mance is required, or if system enhancements such as super

dehumidify are not needed.

(1.) HEAT-Factory selected to match heat input size.

3