York YCAJ44HE8, Installation, Operation And Maintenance Manual

Page: 13 / 92

FORM 150.60-NM3
13
YORK INTERNATIONAL
INSPECTION
Immediately upon receiving the unit, it should be in-
spected for possible damage which may have occurred
during transit. If damage is evident, it should be noted on
the carrier’s freight bill. A written request for inspection by
the carrier’s agent should be made at once. See Instruc-
tion 50.15-NM for more information and details.
LOCATION AND CLEARANCES
These units are designed for outdoor installations on
ground level, rooftop, or beside a building. The location
should be selected for minimum sun exposure and to in-
sure an adequate supply of fresh air for the condenser.
The units must be installed with sufficient clearances for
air entrance to the condenser coil, for air discharge away
from the condenser, and for servicing access.
In installations where winter operation is intended and
snow accumulations are expected, additional height must
be provided to insure normal condenser air flow. (See DI-
MENSIONS, page 8).
FOUNDATION
The unit should be mounted on a flat and level foundation,
floor or rooftop, capable of supporting the entire operating
weight of the equipment. See PHYSICAL DATA for operat-
ing weight. If the unit is elevated beyond the normal reach
of service personnel, a suitable catwalk must be con-
structed around the unit. The catwalk must be capable of
supporting service personnel, their equipment, and the re-
ciprocating compressors.
Ground Level Locations
It is important that the units be installed on a substantial
base that will not settle. A one piece concrete slab with
footers extended below the frost line is highly recom-
mended. Additionally, the slab should not be tied to the
main building foundations as noise and vibration may be
transmitted.
Mounting holes are provided in the steel channel for bolt-
ing the unit to its foundation. (See DIMENSIONS).
For ground level installations, precautions should be taken
to protect the unit from tampering by or injure to unautho-
rized persons. Screws and/or latches on access panels
will prevent casual tampering. However, further safety pre-
cautions such as a fenced-in enclosure or locking devices
on the panels may be advisable. A tamperproof kit is avail-
able as an option. Check local authorities for safety regu-
lations.
Rooftop Locations
Choose a spot with adequate structural strength to safely
support the entire weight of the unit and service personnel.
Care must be taken not to damage the roof. Consult the
building contractor or architect if the roof is bonded. Roof
installations should have wooden beams (treated to re-
duce deterioration), cork, rubber or vibration isolators un-
der the base to minimize vibration.
SHIPPING BRACES
Two shipping brackets (typically galvanized steel) which
run diagonally along each side of the unit, must be re-
moved once the unit is mounted on its foundation. A third
bracket on the right rear of the unit should also be re-
moved. This bracket runs across the bottom right corner of
the unit behind the compressors.
SPRING ISOLATORS (OPTIONAL)
When ordered (four) 4 spring isolators will be furnished.
1. Identify isolator and locate at proper mounting point us-
ing table below.
2. Block up equipment so as to install spring mounts with
pin on top of housing into Equipment Mounting Holes.
3. Mounting Adjust Nut is inside the isolator mount lo-
cated just below the top plate of the mount. Turn nut 2
turns clockwise (down) to load spring mount at each
location.
4. Take two additional turns on Adjustment Nut of each
location.
5. Repeat step No. 3 as many times as necessary to
bring height of isolator to proper height.
6. Take additional turns on mounts at low side or corner to
level the equipment.