Supply-Air Hood; Step 10 - Mount The Barometric Relief Damper - Carrier COBRA 48/50HJ004-014 Installation And Service

LIGHT
COMMERCIAL
THERMIDISTAT
ACCESSORY
62AQ
CONNECTION
BOARD
Fig. 8 — Light Commercial Thermidistat
Accessory Low-Voltage Connections
DDC CONTROL
CONNECTION
BOARD
TB3
24 VAC
R
G RMTOCC
CMPSAFE
Y2
FSD
W1
SFS
NOT USED
C C
X X
Fig. 9 — Low Voltage Connections
(Units with PremierLink™ Controls)
RACEWAY LOW VOLTAGE
CONNECTIONS
HOLE IN END PREMERLINK LOCATION
PANEL (HIDDEN) (OPTIONAL)
Fig. 10 — Field Control Wiring Raceway
(48HJ Shown)
FOR MOISTUREMI$ER UNITS ONLY
OPTIONAL
HUMIDISTAT
(HL38MG029)
TB1
R
R
Y1
Y1
Y2 Y2
W1 W1
W2 W2
G
G
C C
X
INTEGRATED GAS UNIT
CONTROLLER (IGC)
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
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
assembled and installed on the energy recovery section per the
instructions below. See Fig. 12.
1. Install the barometric
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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relief damper onto the