Install Vent Piping To Relief Valves - Carrier AquaEdge 19XR series Installation Instructions Manual

FRAME
ASSEMBLY
CONTROL
PANEL
VALVE
2
VALVE
3
VALVE
4
VALVE
5
ENTERING
WATER
LEAVING
CONDENSER
WATER
Fig. 23 — Pumpout Unit
INSTALL VENT PIPING TO RELIEF VALVES — The
19XR,XRV chiller is factory equipped with relief valves on the
cooler and condenser shells. Refer to Fig. 24 and Tables 10 and
FRAME
LOCATION
SIZE
1, 2
COOLER 3-6
7,8
1, 2
CONDENSER
3-6
NOTE: All valves relieve at 185 psi (1275 kPa).
HEAT EXCHANGER COMPRESSOR
FRAME SIZE FRAME SIZE
2
3
3
4
5
5
6
7
7
8
COMPRESSOR
OIL
HEATER
OIL FILL
FITTING
OIL
SEPARATOR
a19-1546
Table 10 — Relief Valve Locations
RELIEF VALVE
OUTLET SIZE
1 NPT FEMALE CONNECTOR
 NPT FEMALE CONNECTOR
1
1 /
4
 NPT FEMALE CONNECTOR
1 1 /
4
1 NPT FEMALE CONNECTOR
 NPT FEMALE CONNECTOR
1 1 /
4
Table 11 — Cooler/Relief Valve Arrangement
ISOLATION VALVES
Yes
2
No
Yes
2
No
Yes
3
No
Yes
3
No
Yes
3
No
Yes
4
No
Yes
4
No
Yes
4
No
Yes
5
No
Yes
5
No
11 for size and location of relief devices. Vent relief devices to
the outdoors in accordance with ANSI/ASHRAE 15
edition) Safety Code for Mechanical Refrigeration and all
other applicable codes.
Refrigerant discharged into confined spaces can displace
oxygen and cause asphyxiation.
1. If relief devices are manifolded, the cross-sectional area
of the relief pipe must at least equal the sum of the areas
required for individual relief pipes.
2. Provide a pipe plug near outlet side of each relief device
for leak testing. Provide pipe fittings that allow vent
piping to be disconnected periodically for inspection of
valve mechanism.
3. Piping to relief devices must not apply stress to the de-
vice. Adequately support piping. A length of flexible tub-
ing or piping near the device is essential on spring-
isolated machines.
4. Cover the outdoor vent with a rain cap and place a con-
densation drain at the low point in the vent piping to pre-
vent water build-up on the atmospheric side of the relief
device.
QUANTITY OF RELIEF VALVES
WITH DISCHARGE AND
COOLER INLET ISOLATION
1
1
2
2
2
COOLER ARRANGEMENT
SEE FIGURE NO.
24A
24C
24A
24C
24A
24C
24A
24C
24A
24C
24A
24C
24A
24C
24B
24D
24B
24D
24B
24D
41
DANGER
WITHOUT DISCHARGE
AND COOLER
INLET ISOLATION
2
2
4
2
2
CONDENSER ARRANGEMENT
SEE FIGURE NO.
24E
24E
24E
24E
24E
24E
24E
24E
24E
24E
24E
24E
24E
24E
24F
24F
24F
24F
24F
24F
(latest