Advertisement
Refer to the Mechanical and
Electrical sections of this manual
for detailed instructions.
• Locate and maintain the loose
parts such as, isolators, bulb
wells, temperature sensors,
flow sensors or other factory-
ordered field-installed options,
as required. Loose parts are
located in the starter panel if
equipped with a unit-mounted
starter. If not equipped with a
unit-mounted starter, loose
parts are shipped in the motor
junction box.
• Install the unit on a foundation
with flat support surfaces, level
within 1/4" (6 mm) and of
sufficient strength and mass to
support the chiller operating
weight. Place the manufacturer-
supplied isolation-pad
assemblies under the unit.
• Install the unit per the
instructions outlined in the
Mechanical Installation section.
• Complete all water piping and
electrical connections.
CVGF-SVN02B-E4
General
Information
Note: Field piping must be
arranged and supported to
avoid stress on the equipment.
It is strongly recommended
that the piping contractor
provide at least 3 feet (914 mm)
of clearance between the pre-
installation piping and the
planned location of the unit.
This will allow for the proper fit
upon arrival of the unit at the
installation site. All necessary
piping adjustments can be
made at that time.
• Where specified, supply and
install valves in the water
piping, upstream and
downstream of the evaporator
and condenser water boxes, in
order to isolate the shells for
maintenance and to balance
and trim the system.
• Supply and install flow
switches or equivalent devices
in both the chilled-water piping
and the condenser-water
piping. Interlock each switch
with the proper pump starter, to
ensure that the unit can only
operate when water flow is
established.
Note: reference graphs 1-16 in
the Installation Mechanical
section for proper water flow.
• Supply and install taps for
thermometers and a pressure
gauge manifold in the water
piping, adjacent to the inlet and
outlet connections of both the
evaporator and the condenser.
• Supply and install drain valves
on each water box.
• Supply and install vent cocks
on each water box.
• Where specified, supply and
install strainers ahead of all
pumps and automatic
modulating valves.
• Supply and install refrigerant
pressure-relief piping from the
pressure-relief valve to the
atmosphere.
• If necessary, supply enough
HFC-134a refrigerant (1 pound
= .45 kg) and dry nitrogen (75
psig = 517 kPa maximum) for
leak testing.
• Evacuate the unit to less than
500 microns (0.5 mm Hg) or
according to local code.
• Charge with refrigerant 134a.
• Go over the pre-commissioning
check sheet and ensure that all
items have been completed.
• Start the unit under the
supervision of a qualified
service technician.
15
Hide quick links:
Advertisement
