FORM 195.26-NM3
YORK INTERNATIONAL
13
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 inspec-
tion by the carrier’s agent should be made at once. See
Instruction 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
insure 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 DIMENSIONS).
AVOID locations where normal operating sound may
be objectionable such as near occupied areas, beneath
windows, or between structures.
FOUNDATION
The unit should be mounted on a flat and level founda-
tion, floor or rooftop, capable of supporting the entire
operating weight of the equipment. See PHYSICAL DATA
for operating weight. If the unit is elevated beyond the
normal reach of service personnel, a suitable catwalk
must be constructed around the unit. The catwalk must
be capable of supporting service personnel, their equip-
ment, and the reciprocating compressors.
Ground Level Locations
It is important that the units be installed on a substan-
tial base that will not settle. A one piece concrete slab
with footers extended below the frost line is highly rec-
ommended. 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
bolting the unit to its foundation. (See DIMENSIONS).
Mounting holes (11/16" dia.) are provided in the steel
channel for bolting the unit to its foundation. See DI-
MENSIONS for location of the mounting holes.
For ground level installations, precautions should be
taken to protect the unit from tampering by or injury to
unauthorized persons. Tamperproof options, such as
wire-mesh guards and louvered panels, are available
to enclose the unit. Erecting a fence around the unit is
another common practice. Check local authorities for
safety regulations.
Rooftop Locations
Choose a spot with adequate structural strength to safely
support the entire weight of the unit and service per-
sonnel. Care must be taken not to damage the roof
during installation. If the roof is “bonded”, consult the
building contractor or architect for special installation
requirements. Roof installations should incorporate the
use of spring type isolators to minimize the transmis-
sion of vibration into the building structure.
SHIPPING BRACES
Two shipping brackets (typically galvanized steel) which
run diagonally along each side of the unit, must be
removed once the unit is mounted on its foundation. A
third bracket on the right rear of the unit should also be
removed. This bracket runs across the bottom right
corner of the unit behind the compressors.
SPRING ISOLATORS (OPTIONAL)
1.
Identify isolator and locate at proper mounting
point using Table 1, on page 14.
2.
Block up equipment so as to install spring mounts
with pin on top of housing into Equipment Mount-
ing Holes.
3.
Mounting Adjust Nut is inside the isolator mount
located 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.
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