8
Step 1 — Plan for Unit Location
Select a location for the unit and its support system (pad,
rails or other) that provides for the minimum clearances
required for safety. This includes the clearance to
combustible surfaces, unit performance and service access
below, around and above unit as specified in unit
drawings. See Fig. 5.
NOTE
: Consider also the effect of adjacent units on
airflow performance and control box safety clearance.
Do not install the outdoor unit in an area where fresh air
supply to the outdoor coil may be restricted or when
recirculation from the condenser fan discharge is possible.
Do not locate the unit in a well or next to high walls.
Evaluate the path and required line length for
interconnecting refrigeration piping, including suction
riser requirements (outdoor unit above indoor unit), liquid
line lift (outdoor unit below indoor unit) and hot gas
bypass line. Relocate sections to minimize the length of
interconnecting tubing.
DO NOT BURY REFRIGERATION LINES.
Although unit is weatherproof, avoid locations that permit
water from higher level runoff and overhangs to fall onto
the unit.
REAR:
Min 18” (457 mm)
requried for service
Note: Observe requirements for 39” (914 mm) operating clearance
on either Left or Rear coil opening.
RIGHT:
Min 18” (457 mm)
requried for service
LEFT:
Min 18” (457 mm)
requried for service
FRONT:
42” (1067 mm)
C10069
Fig. 5 -- Service Clearance Dimensional Drawing
Step 2 — Complete Pre-Installation Checks
CHECK UNIT ELECTRICAL CHARACTERISTIC —
Confirm before installation of unit that voltage, amperage
and circuit protection requirements listed on unit data plate
agree with power supply provided.
UNCRATE UNIT — Remove unit packaging except for
the top skid assembly, which should be left in place until
after the unit is rigged into its final location.
INSPECT SHIPMENT — File a claim with shipping
company if the shipment is damaged or incomplete.
CONSIDER SYSTEM REQUIREMENTS
S
Consult local building codes or the U.S.A. National
Electrical Code (Ref: ANSI/NFPA 70, [American
National Standards Institute/National Fire Protection
Association], latest revision) for special installation
requirements.
S
Allow sufficient space for airflow clearance, wiring,
refrigerant piping, and servicing unit. See Fig. 1 and
Fig. 2 for unit dimensions and weight distribution data.
S
Locate the unit so that the outdoor coil (condenser)
airflow is unrestricted on all sides and above.
S
The unit may be mounted on a level pad directly on the
base channels or mounted on raised pads at support
points. See Tables 1A and 1B for unit operating
weights. See Fig. 1 and Fig. 2 for weight distribution
based on recommended support points.
NOTE
: If vibration isolators are required for a particular
installation, use the data in Fig. 1 and Fig. 2 to make the
proper selection.
Step 3 — Prepare Unit Mounting Support
Slab Mount —
Provide a level concrete slab that extends a minimum of
150 mm (6 in.) beyond unit cabinet. Install a gravel apron
in front of condenser coil air inlet to prevent grass and
foliage from obstructing airflow.
Step 4 — Rig and Mount the Unit
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage.
All panels must be in place when rigging. Unit is not
designed for handling by fork truck.
CAUTION
!
RIGGING — These units are designed for overhead
rigging. Refer to the rigging label for preferred rigging
method. Spreader bars are not required if top crating is
left on the unit. All panels must be in place when rigging.
As further protection for coil faces, plywood sheets may
be placed against the sides of the unit, behind cables. Run
cables to a central suspension point so that the angle from
the horizontal is not less than 45 degrees. Raise and set
the unit down carefully.
If it is necessary to roll the unit into position, mount the
unit on longitudinal rails, using a minimum of 3 rollers.
Apply force to the rails, not the unit. If the unit is to be
skidded into position, place it on a large pad and drag it
by the pad. Do not apply any force to the unit.
Raise from above to lift the unit from the rails or pad
when unit is in its final position.
After the unit is in position, remove all shipping materials
and top crating.
38A
U
D
Summary of Contents for 38AUD*12 Series
Page 21: ...21 Fig 19 38AUZ 07 Charging Chart Fig 20 38AUZ 08 Charging Chart...
Page 22: ...22 Fig 21 38AUD 12 Charging Chart...
Page 23: ...23 Fig 22 38AUD 14 Charging Chart...
Page 24: ...24 Fig 23 Typical 38AUZ Wiring Diagram 50Hz Single Circuit Unit Shown...
Page 25: ...25 Fig 24 Typical 38AUD Wiring Diagram 50Hz Dual Circuit Unit Shown...
Page 61: ...21 C10084 Fig 18 Typical 38AUD 16 Wiring Diagram 38AUD...
Page 62: ...22 C10085 Fig 19 Typical 38AUD 25 Wiring Diagram 38AUD...