Carrier 48/50HJ004-014 specifications Low Voltage Connections Units with PremierLink Controls

FOR MOISTUREMI$ER UNITS ONLY

LIGHT

COMMERCIAL

THERMIDISTAT

ACCESSORY

62AQ

CONNECTION BOARD

OPTIONAL

HUMIDISTAT (HL38MG029)

Fig. 8 — Light Commercial Thermidistat Accessory Low-Voltage Connections

Step 9 — Assemble and Mount Supply-Air Hood — The hood kit supplied with the energy recovery section is needed to complete this installation. See Fig. 11. The energy recovery section supply air hood installs around its motorized damper inlet.

NOTE: Mount the hood sides to the energy recovery section first, and then the hood top for easier installation. The ther- mostats are shipped factory-wired and taped behind the damper blade of the energy recovery section. Knobs and screws are in hood package.

1.	Assemble and mount supply air hood as shown in Fig. 11.
2.	Discard the tape that holds the thermostats behind the
	damper plates. Mount thermostats to the hood sides of the
	energy recovery section unit into the holes provided, with
	thermostat terminals facing up. See Fig. 11. Mount out-
	side cooling set point thermostat part number
	HH22HA060 (white label) on the left side of the hood.
	See Fig. 11.
3.	Mount the outside heating thermostat part number
	HH22HA065 (red label) on the right side of the hood. See
	Fig. 11.
4.	From the outside of the unit’s side panels fasten the
	thermostat(s) with two mounting screws, with the quick
	connect terminals face up. See Fig. 11.
5.	Install thermostat knobs (provided in kit). See Fig. 11.
6.	Set supply air quantity (on units with optional factory-
	installed supply air fan [GA] or field-installed accessory
	supply air fan kit [CRFANKIT001-006A00]). Select the
	fan speed and damper position to obtain desired cfm.
	Relocate damper stops to the desired position on the

DDC CONTROL CONNECTION

TB3 BOARD

R24 VAC G RMTOCC

CMPSAFE

Y2 FSD

W1 SFS

NOT USED

CC X X

TB1

R

Y1

Y2

W1

W2

G

C

X

R

Y1

Y2

W1

W2

G

C

damper support rail and adjust the fan speed by relocating

the wire on the supply fan motor terminal block. Factory

set position is 45 degrees for the damper position, and

medium speed for the motor. Relocate stops to top hole

for 30 degrees, bottom hole for 60 degrees, and remove

stops for 90 degrees (see Fig. 11).

7. Install the aluminum filter screen and end cap with

screws along the top, as shown in Fig. 11.

Step 10 — Mount the Barometric Relief Damper — The hood kit supplied with the energy recovery section is needed to complete this installation. The exhaust air hood (that includes the barometric relief damper) must be

Fig. 9 — Low Voltage Connections (Units with PremierLink™ Controls)

RACEWAY LOW VOLTAGE		INTEGRATED GAS UNIT
	CONNECTIONS	CONTROLLER (IGC)

HOLE IN END	PREMERLINK LOCATION
PANEL (HIDDEN)	(OPTIONAL)

Fig. 10 — Field Control Wiring Raceway

(48HJ Shown)

assembled and installed on the energy recovery section per the instructions below. See Fig. 12.

1.Install the barometric relief damper onto the energy recovery section by mounting the hinge with 2 screws then sliding in the hinge pin. See Fig. 12.

2.Install damper limiter for 30, 45, or 60 degree angles. Limiter pin not required for 90-degree setting (set to the desired position based on CFM requirements and fan speed). See Fig. 12. Fan speed is adjusted by relocating wires on fan terminal blocks.

3.Loosen compressor bolts and remove shipping blocks from under compressor on the 62AQ060 and 62AQ100 sizes only.

4.Install exhaust hood.

5.Install wire guard as shown in Fig. 12.

Never operate the unit without the wire guard in place.

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