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JOHNSON CONTROLS
20
FORM 150.62-NM8 (1020)
INSTALLATION
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 in Section 1 of this IOM for operating weight.
If the unit is elevated beyond the normal reach of
service personnel, a suitable catwalk must be capable
of supporting service personnel, their equipment, and
the 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
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 in Section 1 of this IOM
.)
For ground level installations, precautions should be
taken to protect the unit from tampering by or injury to
unauthorized persons. Screws and/or latches on access
panels will prevent casual tampering. However, further
safety precautions such as a fenced-in enclosure or
locking devices on the panels may be advisable.
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 vibration isolators under the base to minimize
vibration.
Noise Sensitive Locations
Efforts should be made to assure that the chiller is not
located next to occupied spaces or noise sensitive areas
where chiller noise level would be a problem. Chiller
noise is a result of compressor and fan operation.
Considerations should be made utilizing noise levels
published in the YORK Engineering Guide for
the specific chiller model. Sound blankets for the
compressors and low sound fans are available.
SPRING ISOLATORS (OPTIONAL)
When ordered, four (4) isolators will be furnished.
Identify the isolator, locate at the proper mounting point,
and adjust per instructions.
See Isolator Data In Section
7 of this IOM.
COMPRESSOR MOUNTING
The compressors are mounted on four (4) rubber
isolators. The mounting bolts should not be loosened
or adjusted at installation of the chiller.
REMOTE COOLER OPTION
For units using remote cooler option, refer to instructions
included with miscellaneous cooler parts kit.
The unit and remote cooler are shipped with a 6 lb. (2.7
kg) nitrogen holding charge. The nitrogen charge must
be removed, and system evacuated, and the refrigerant
charge must be weighed-in according to the operating
charge listed in Table 15 “Physical Data”. Additional
charge must also be added for the refrigerant lines.
CHILLED WATER PIPING
General
When the unit has been located in its final position, the
unit water piping may be connected. Normal installation
precautions should be observed in order to receive
maximum operating efficiencies. Piping should be kept
free of all foreign matter. All chilled water evaporator
piping must comply in all respects with local plumbing
codes and ordinances.
Since elbows, tees and valves decrease pump capacity,
all piping should be kept as straight and as simple as
possible.
All piping must be supported indepen
-
dent of the chiller.
Consideration should be given to com
-
pressor access when laying out water
piping. Routing the water piping too
close to the unit could make compres
-
sor servicing/replacement difficult.
Summary of Contents for YCAL0014E Series
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