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STORAGE RECOMMENDATIONS
The 38AP condensing units are designed for outdoor installations.
At times, a delay in construction or other factors require that a unit
be stored for a period of time prior to installation. The following
guidelines should be used for unit storage.
Provide Machine Protection
Place and store the unit in an area that will protect it from vandal-
ism, accidental contact with vehicles, falling debris or construction
waste. Ideally, do not remove the shipping protection such as the
coil protectors. This will provide additional protection for the unit.
The unit can be stored outdoors.
Inspection During Storage
To ensure faster installation when the time comes, the following
inspection schedule is recommended:
EVERY 3 MONTHS
The 38AP units are shipped with a nitrogen holding charge.
Check each refrigerant circuit to be sure that there is positive pres-
sure, at least 5 psig (34.5 kPa) in the circuit. If a circuit is found to
be without pressure, contact a qualified refrigeration mechanic.
The system should be pressurized to find the leak. It should be re-
paired, dehydrated and recharged with nitrogen. If a positive cir-
cuit pressure was not found, the compressor oil should be changed
or at least sampled to determine if moisture is present. If moisture
is found in the compressor oil, the oil should be changed.
EVERY 6 MONTHS
Check the unit for damage from any source. Check the unit for
nests from rodents, birds, or insects. Depending on location, these
organisms can cause deterioration of components which may re-
sult in failure. Consider an exterminator if necessary. If damage is
found that will interfere with the installation, consider repairing
the damage before installation.
Check the unit control box for signs of moisture. If moisture is
found, determine the entry path and seal the leak.
INSTALLATION
Step 1 — Inspect Shipment
Inspect unit for damage upon arrival. If damage is found, im-
mediately file a claim with the shipping company. Verify prop-
er unit delivery by checking unit nameplate data and the model
number nomenclature shown in Fig. 1. See Tables 1 and 2 for
unit physical data.
Step 2 — Rig and Place Unit
All units are designed for overhead rigging, and it is important
that this method be used. Lifting holes are provided in the frame
base rails. It is recommended to use shackles in the lifting holes
(see rigging label on the unit and Fig. 3 and 4 for rigging weights
and center of gravity). All panels must be in place when rigging.
Use spreader bars or frame to keep the cables, chains, and straps
clear of the unit sides. Leave standard coil protection packaging in
place during rigging to provide protection to coils. Remove and
discard all coil protection after rigging cables are detached.
DOMESTIC UNITS
Standard 38AP unit packaging consists of coil protection only.
Skids are not provided. If overhead rigging is not available at the
jobsite, place the unit on a skid or pad before dragging or rolling.
When rolling, use a minimum of 3 rollers. When dragging, pull
the pad or skid. Do not apply force to the unit. When in final posi-
tion, raise from above to lift unit off the pad or skid.
EXPORT UNITS
All export units are mounted on skids with vertical coil protection.
Leave the unit on the skid until it is in final position. While on the
skid, the unit can be rolled or skidded. Apply force to the skid, not
to the unit. Use a minimum of 3 rollers when rolling. When in fi-
nal position, raise from above to remove the skid.
PLACING UNITS
When considering location of the unit, be sure to consult National
Electrical Code (NEC, U.S.A.) and local code requirements. Al-
low sufficient space for airflow, wiring, piping, and service. The
placement area must be level and strong enough to support the op-
erating weight of the unit. (See Table 3 and Fig. 2.) When unit is in
proper location, use of mounting holes in base rails is recommend-
ed for securing unit to supporting structure. For mounting unit on
vibration isolators, 4 x 24 in. perimeter support ASTM “C” chan-
nels between unit and the isolators are recommended with a mini-
mum of 4 channels per unit. Fasteners for mounting unit are field
supplied. See Fig. 5.
Refer to Fig. 6-12 for airflow clearances. Recommended mini-
mum clearances are 6 ft (1829 mm) for unrestricted airflow and
service on sides of unit, 4 ft (1219 mm) on ends, and unrestricted
clear air space above the unit. Provide ample space to connect liq-
uid and suction lines to indoor unit. For multiple units, allow 10 ft
(3048 mm) separation between airflow surfaces. If walls surround
the unit, wall height should not exceed the top of the unit fan dis-
charge. Installation in a pit is not recommended.
Refer to Fig. 13 for outdoor fan and compressor layout.
Refer to Fig. 14 and 15 for unit piping installation. See Table 4 for
refrigerant specialties part numbers.
CAUTION
DO NOT re-use compressor oil or any oil that has been ex-
posed to the atmosphere. Dispose of oil per local codes and
regulations. DO NOT leave refrigerant system open to air any
longer than the actual time required to service the equipment.
Seal circuits being serviced and charge with dry nitrogen to
prevent oil contamination when timely repairs cannot be com-
pleted. Failure to follow these procedures may result in dam-
age to equipment.
IMPORTANT: To maintain unit stability while lifting, use 4
cables, chains or straps of equal length. Attach one end of each
cable to shackle attachment point and the other end of each
cable to the overhead rigging point.
CAUTION
All panels must be in place when rigging. Failure to comply
could result in equipment damage.
CAUTION
For unit sizes 025 to 060 when handling with a forklift, handle
only through fork pocket holes. Failure to follow this caution
could result in equipment damage or personal injury.
CAUTION
For unit sizes 065 to 130, do not forklift the unit unless unit is
attached to a skid designed for forklifting. Failure to follow
this caution could result in equipment damage or personal
injury.
IMPORTANT: Be sure to mount unit level to within 1/8 in. per
ft (10.4 mm per m) to ensure proper oil equalization between
compressors.
