Carrier 19XR Series, Installation, Operating And Maintenance Instructions

Page: 9 / 20

9
Table 4 — Relief Devices
STORAGE
TANK SIZE
cu ft (cu m)
RELIEF VALVE
OUTLET SIZE
QUANTITY
REQUIRED “C” FACTOR
lb air
min
kg air
min
28 (0.8)
1
1
/
4
in. NPT
Female Connector
2 34.5 15.6
52 (1.5)
1
1
/
4
in. NPT
Female Connector
2 52.3 23.7
SERVICE VALVES
PUMPOUT
COMPRESSOR
PRESSURE RELIEF
VALVE
OIL
SEPARATOR
PUMPOUT
CONDENSER
WATER
CONNECTIONS
2
3
4 5
TO TOP OF
STORAGE TANK
STORAGE TANK
VAPOR VALVE
FROM BOTTOM
OF STORAGE TANK
STORAGE TANK
LIQUID REFRIGERANT VALVE
TEE FOR
REFRIGERANT
CHARGING
TO TOP OF
CHILLER
CONDENSER
SEE NOTE
# 1
TO TOP OF
CHILLER
COOLER
SEE NOTES
# 1 AND 2
CHECK
VALVE
SERVICE VALVES
PUMPOUT
COMPRESSOR
PRESSURE RELIEF
VALVE
OIL
SEPARATOR
PUMPOUT
CONDENSER
WATER
CONNECTIONS
2
3
4 5
TO TOP OF
STORAGE TANK
STORAGE TANK
VAPOR VALVE
FROM BOTTOM
OF STORAGE TANK
STORAGE TANK
LIQUID REFRIGERANT VALVE
TEE FOR
REFRIGERANT
CHARGING
TO BOTTOM OF
COOLER AND
CHILLER
CONDENSER
SEE NOTE
# 1
TO TOP OF
CHILLER
COOLER
OR CONDENSER
SEE NOTES
# 1 AND 2
TO ADDITIONAL
CHILLERS
CHECK
VALVE
CHILLERS WITHOUT ISOLATION VALVES
CHILLERS WITH ISOLATION VALVES
(WITH OR WITHOUT PUMPOUT STORAGE TANKS)
GENERAL PIPING CONNECTION SIZES
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.
CONNECTION SIZE (in.)
Refrigerant Transfer Connections
1
/
2
Flare (male)
Condenser Water Cooling Connectors
3
/
4
NPT (female)
Safety Relief Head Pumpdown
3
/
8
Flare (male)
LEGEND
Factory-Supplied Tubing
Field-Supplied Tubing
Field-Supplied Tubing (Multiple Chillers)
Service Valve (Factory Supplied)
Service Valve (Field Supplied)
Fig. 6 — Typical Pumpout Unit/Chiller Connection Schematic
a19-1575ef
a19-1576ef