Product Manual PM WSC/WDC 71
3. The purge tank shall consist of a cooling coil, filter-drier cores, water separation
tube, sight glass, drain, and air discharge port. Air and water are separated from the
refrigerant vapor and accumulated in the purge tank.
4. The pumpout system shall consist of a small compressor and a restriction device
located at the pumpout compressor suction connection.
5. The purge unit shall be connected to a 100% reclaim device.
C. Vacuum Prevention System (HCFC-123 Chillers Only): Chiller manufacturer shall supply and
install a vacuum prevention system for each chiller. The system shall constantly maintain 0.05
psig inside the vessel during non-operational periods. The system shall consist of a precision
pressure controller, two silicon blanket heaters, a pressure transducer, and solid-state safety
circuit.
D. Refrigerant Detection Device (HCFC-123 Chillers Only): Chiller manufacturer shall supply and
install a refrigerant detection device and alarm capable of monitoring refrigerant at a level of 10
ppm. Due to the critical nature of this device and possible owner liability, the chiller
manufacturer shall guarantee and maintain the detection monitor for five years after owner
acceptance of the system.
E. Waffle type vibration pads for field mounting under unit feet.
PART 3 — EXECUTION
3.1 INSTALLATION
A. Install according to manufacturer’s requirements, shop drawings, and Contract Documents.
B. Adjust chiller alignment on concrete foundations, sole plates or subbases as called for on
drawings.
C. Arrange the piping on each vessel to allow for dismantling the pipe to permit head removal
and tube cleaning.
D. Furnish and install necessary auxiliary water piping for oil cooler.
E. Coordinate electrical installation with electrical contractor.
F. Coordinate controls with control contractor.
G. Provide all materiel required to ensure a fully operational and functional chiller.
3.2 START-UP
A. Units shall be factory charged with the proper refrigerant and oil.
B. Factory Start-Up Services: Provide for as long a time as is necessary to ensure proper
operation of the unit, but in no case for less than two full working days. During the period of
start-up, the Start-up Technician shall instruct the Owner’s representative in proper care and
operation of the unit.
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