York YCAZ33BA3, Руководство пользователя, Страница: 13 / 88

FORM 150.44-NM4
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 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).
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 be-
yond the normal reach of service personnel, a suitable
catwalk must be constructed around the unit. The cat-
walk must be capable of supporting service personnel,
their equipment, 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
recommended. 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).
For ground level installations, precautions should be taken
to protect the unit from tampering by or injury to unautho-
rized persons. Screws and/or latches on access panels will
prevent casual tempering. However, further safety precau-
tions such as a fenced-in enclosure or locking devices on
the panels may be advisable. A tamperproof kit is available
as an option. 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
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 reduce deterioration), cork, rubber, or vibra-
tion isolators under 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
removed. This bracket runs across the bottom right
corner of the unit behind the compressors.
SPRING ISOLATORS (OPTIONAL)
When ordered, four (4) vibration isolators will be fur-
nished.
1. Identify isolator and locate at proper mounting point
using table on page 14.
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 cor-
ner to level the equipment.
COMPRESSOR MOUNTING
The compressors are mounted on four (4) isolator pads
(one under each compressor foot). (See Fig. 4). The
mounting bolts are not to be loosened or adjusted at
installation.
FIG. 4 – COMPRESSOR MOUNTING PAD
25112A
COMPRESSOR MOUNTING PAD