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PRESSURE RELIEF
TO TOP OF
VALVE
CHILLER
COOLER
OR CONDENSER
PUMPOUT
COMPRESSOR
SEE NOTE
# 1
TO ADDITIONAL
CHILLERS
2
3
SERVICE VALVES
4
5
SEE NOTES
# 1 AND 2
CHECK
VALVE
TO BOTTOM OF
COOLER AND
TEE FOR
CHILLER
REFRIGERANT
CONDENSER
CHARGING
LIQUID REFRIGERANT VALVE
CHILLERS WITHOUT ISOLATION VALVES
a19-1575ef
GENERAL PIPING CONNECTION SIZES
CONNECTION
Refrigerant Transfer Connections
Condenser Water Cooling Connectors
Safety Relief Head Pumpdown
NOTES:
1. The field-supplied tubing is to be 1/2-in. OD tubing (min.) and
must be arranged and supported to avoid stresses on the equip-
ment, transmission of vibrations, and interference with routine
access during the reading, adjusting, and servicing of the equip-
ment. If the distance from the chiller to the pumpout unit is over
50 ft, then 7/8-in. OD tubing (min.) must be used. Provisions
should be made for adjustment in each plane of the tubing and
for both periodic and major servicing of the equipment. Special
care must be taken so that the safety head does not experience
tubing strain. Vent the safety head per ASHRAE 15 (American
Society of Heating, Refrigerating, and Air-Conditioning Engi-
neers), latest revision.
2. The tubing and valve from the storage tank to the pumpout com-
pressor is factory supplied when the unit is factory mounted.
STORAGE
TANK SIZE
cu ft (cu m)
28 (0.8)
52 (1.5)
OIL
PUMPOUT
SEPARATOR
CONDENSER
WATER
CONNECTIONS
TO TOP OF
STORAGE TANK
STORAGE TANK
VAPOR VALVE
FROM BOTTOM
OF STORAGE TANK
STORAGE TANK
SIZE (in.)
1/2 Flare (male)
3/4 NPT (female)
3/8 Flare (male)
Fig. 6 — Typical Pumpout Unit/Chiller Connection Schematic
Table 4 — Relief Devices
RELIEF VALVE
OUTLET SIZE
1-1/4 in. NPT
Female Connector
1-1/4 in. NPT
Female Connector
PRESSURE RELIEF
VALVE
TO TOP OF
CHILLER
COOLER
PUMPOUT
COMPRESSOR
SEE NOTE
# 1
2
3
SERVICE VALVES
4
5
CHECK
VALVE
TO TOP OF
CHILLER
CONDENSER
TEE FOR
REFRIGERANT
CHARGING
LIQUID REFRIGERANT VALVE
CHILLERS WITH ISOLATION VALVES
(WITH OR WITHOUT PUMPOUT STORAGE TANKS)
LEGEND
Factory-Supplied Tubing
Field-Supplied Tubing
Field-Supplied Tubing (Multiple Chillers)
Service Valve (Factory Supplied)
Service Valve (Field Supplied)
QUANTITY
2
2
9
OIL
SEPARATOR
PUMPOUT
CONDENSER
WATER
CONNECTIONS
SEE NOTES
# 1 AND 2
STORAGE TANK
STORAGE TANK
VAPOR VALVE
FROM BOTTOM
OF STORAGE TANK
STORAGE TANK
a19-1576ef
REQUIRED "C" FACTOR
lb air
kg air
min
min
34.5
15.6
52.3
23.7
TO TOP OF
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