Installation; Location Requirements; Installation Of Vibration Isolators - York YGWH 115 Installation, Commissioning & Operation

4.

Installation

The YGWH unit is shipped as a single factory assembled,
piped, wired and refrigerant charged package (or
nitrogen holding charge), requiring a minimum of field
labour to make chilled water connections, condenser
water connections, refrigerant atmospheric relief
connections, and electrical power connections.
York representatives will provide unit installation
inspection, initial start-up and other services as detailed
in the supply contract.
The YORK Warranty will be voided if the following
restrictions are not adhered to:
• No valves or connections should be opened
under any circumstances because such action will
result in loss of the factory charged refrigerant or
nitrogen.
• Do not dismantle or open the Unit for any
reason except under the supervision of a YORK
representative.
• Do not make final power supply connections to the
compressor motor or control panel.
• Do not charge the compressor with oil.
• Do not attempt to start the system.
• Do not supply the evaporator with hot water
(temperature limit is 38°C (100°F) or steam

Location Requirements

YGWH units are low noise, and low vibration and can be
located in any building or structure that is level (within
6 mm) and can withstand the weight of the entire unit.
The unit should be located in an indoor location where
temperature ranges from 4°C to 43°C and the altitude
is less than 2000 metres.
The units are furnished with neoprene vibration isolator
mounts for basement or ground level installations. Unit
may by located on upper floor levels providing the
floor is capable of supporting the total unit operating
weight (in this application, the spring isolator option is
recommended).
A level floor, mounting pad or foundation must be
provided by others, capable of supporting the operating
weight of the unit.
There should be sufficient clearances at the sides and
top of the unit to carry out routine maintenance work.
In addition, tube removal space should be allowed at
one end of the unit for cleaning the evaporator and
condenser tubes, a doorway or other suitable hole
maybe used.
EN
Form 6S6I-B01C-EOMA-EN (0318)
Maintenance space requirements are as follows: Rear,
Ends and Above Unit - 610 mm
Front of Unit - 914 mm
Tube Removal - See following tables
YGWH Models
115, 145, 180, 225
YGWH Models
260, 300, 330, 375

Installation of Vibration Isolators

The optional vibration isolators are shipped loose with
the chiller.
Please refer to the floor layout drawing, for installation
positions for the units.
Isolator Installation
There are two types of isolator available: rubber pads
or spring isolators.
Locating and installing isolator pads
The isolator pads should be located in accordance with
the floor layout drawing. After the isolator pads have
been placed into position on the floor, lower the unit
onto the pads. Make sure the pads are even with the
edges of the mounting feet. When the unit is in place,
remove the rigging equipment and check that the chiller
is level, both longitudinally and transversely.
YGWH115, YGWH145, YGWH180, YGWH225
Unit Weight (kg) Unit Weight (lbs)
UP TO 7423 UP TO 16365
YGWH260, YGWH300, YGWH330, YGWH375
Unit Weight (kg) Unit Weight (lbs)
7424 TO 13079 16366 TO 28835
The longitudinal alignment of the unit should be
checked by placing a level on the top centre of the
evaporator shell under the compressor. Transverse
alignment should be checked by placing a level on top
of the shell end sheets at each end of the unit.
The unit should be level within 6.4 mm from one end to
the other end and from front to rear. If the chiller is not
level within the amount specified, lift it and place shims
between the isolation pad and the tube sheets.
Checking the Isolator Pads Deflection
All isolator pads should be checked for the proper
deflection while checking the level of the unit. Each pad
should be deflected approximately 4 mm (0.15"). If an
isolator pad is under deflected, shim should be placed
between the unit tube sheet and the top of the pad to
equally deflect all pads.
Tube removal space
2591 mm
Tube removal space
4267 mm
Part No.
028W14462-000
Part No.
028W14459-000
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