28
SYSTEM OPERATION
WEIGHTS AND CENTER OF GRAVITY
Y
X
CG
COMPRESSOR
CONDENSER COIL
RETURN
EVAPORATOR COIL
B
C
D
A
SUPPLY
Corner and center of gravity locations
Note: Unit should be lifted at a point above center of
gravity.
A
B
C
D
DRG036
630
572
104
141
186
141
36.5 27.7
DRG048
705
647
118
231
180
118
36.3 27.9
DRG060
713
655
148
189
135
183
35.8 27.5
DRG072
763
705
122
246
180
157
35.3 27.7
Model
X (in) Y (in)
Shipping
Weight (lb)
Operating
Weight (lb)
Corner Weights (lb)
The numbers may slightly vary depending on installed
options.
CAUTION
To prevent severe damage to the bottom of the unit,
do not fork lift unit after wood struts have been
removed.
Bring condenser end of unit into alignment with the curb
first. Lower unit carefully onto roof mounting curb. When
a rectangular cantilever curb is used, care should be
taken to center the unit. Check for proper alignment and
orientation of supply and return openings with duct.
Rigging Removal
CAUTION
To prevent damage to the unit, do not allow crane
hooks and spreader bars to rest on the roof of the
unit.
Remove spreader bars, lifting cables and other rigging
equipment.
ELECTRICAL WIRING
WARNING
HIGH VOLTAGE!
Disconnect all power before servicing
or installing this unit. Multiple power
sources may be present. Failure to do so
may cause property damage, personal
injury or death.
WARNING
HIGH VOLTAGE!
To avoid personal injury or death due
to electrical shock, do not tamper with
factory wiring. The internal power and
control wiring of these units are factory-
installed and have been thoroughly tested
prior to shipment. Contact your local
representative if assistance is required.
CAUTION
To prevent damage to the wiring, protect wiring from
sharp edges. follow national electrical code and
all local codes and ordinances. Do not route wires
through removable access panels.
CAUTION
Conduit and fittings must be weather-tight to prevent
water entry into the building.
For unit protection, use a fuse or HACR circuit breaker
that is in excess of the circuit ampacity, but less than or
equal to the maximum overcurrent protection device. DO
NOT EXCEED THE MAXIMUM OVERCURRENT DEVICE SIZE
SHOWN ON UNIT DATA PLATE.
All line voltage connections must be made through
weatherproof fittings. All exterior power supply and
ground wiring must be in approved weatherproof conduit.
The main power supply wiring to the unit and low voltage
wiring to accessory controls must be done in accordance
with these instructions, the latest edition of the National
Electrical Code (ANSI/NFPA 70), and all local codes and
ordinances.
The unit is factory wired for the voltage shown on the
unit’s data plate.
Summary of Contents for DRG0361DL00001S
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