York YCWS0313SC Installation, Operation And Maintenance Manual Download

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FORM 201.24-NM2

YORK INTERNATIONAL

LOCATION REQUIREMENTS

To achieve optimum performance and trouble-free ser-
vice, it is essential that the proposed installation site
meets with the location and space requirements for the
model being installed. For dimensions, weight and space
requirements, including service access details, refer to
Section 9.

The clearances recommended are nomi-
nal for the safe operation and mainte-
nance of the unit and power and con-
trol panels. Local health and safety regu-
lations, or practical considerations for
service replacement of large compo-
nents, may require larger clearances
than those given in Section 9.

Units are designed for indoor installation and not in-
tended for wet, corrosive or explosive atmospheres.
Installation should allow for water drain, ventilation
and sufficient clearance for service, including tube
cleaning/removal.

For installation in equipment rooms near noise-critical
areas, common walls should be of adequate sound at-
tenuating construction, all doors should be tightly
gasketed, and the unit should have vibration isolators
fitted.

The unit must be installed on a suitable flat and level
concrete base (2) that extends to fully support the unit
base frame.
On basement foundations remove a portion of the base-
ment floor (3) so that a concrete base can be poured
resting on the ground (1) , with a corkboard (4) installed
on both sides, and a waterproof sealing compound (5).

The concrete base must capable of supporting 150% of
the operating weight. In case of upper floors, the unit
and piping should be isolated from walls and ceiling.
The unit may be bolted to the foundation using 13 mm Ø
holes in the base of the framework. When lower trans-
mitted vibration levels are required optional anti-vibra-
tion isolators can be supplied loose for site installation.

INSTALLATION OF VIBRATION ISOLATORS

An optional set of vibration isolators can be supplied
loose with each unit (refer to Section 9 for details).

PIPEWORK CONNECTION

General Requirements

The following piping recommendations are intended
to ensure satisfactory operation of the unit. Failure to
follow these recommendations could cause damage to
the unit, or loss of performance, and may invalidate
the warranty.

The maximum flow rate and pressure
drop for the cooler and condenser
must not be exceeded at any time. Re-
fer to Section 9 for details.

• The water must enter the heat exchanger(s) by the

inlet connection. Refer to Section 9 for details.

• A flow switch or differential switch must be installed

in the customer pipework at the outlet of the ex-
changers as shown in the arrangement diagrams, and
wired back to the control panel using screened cable.
For details refer to “Electrical Connection”. This is
to prevent damage to the exchanges caused inad-
equate liquid flow.

The flow switch used must have gold
plated contacts for low voltage/current
operation. Paddle type flow switches
suitable for 10 barg working pressure
and having a 1" N.P.T. connection can
be obtained from YORK as an option
for the unit.

• The liquid pump(s) installed in the pipework

system(s) should discharge directly into the unit
heat exchanger section of the system. The pump(s)
require an auto-starter (by others) to be wired to
the control panel. For details refer to “Electrical
Connection”.

SECTION 4

INSTALLATION