Carrier 17EX User Manual
Page 104
Table 24 — Auxiliary Systems, Electrical Data
POWER SOURCE
ITEM
AVERAGE kW
DESIGN CENTER
VOLTAGE
SUPPLY
V-PH-Hz
FLA
LRA
1
Seal Leakage
Pump
0.23
115
115-1-50/60
4.78
21.7
Motor Space
Heater
0.50
115
115-1-50/60
4.35
4.35
Control Module
and Actuator
0.40
115
115-1-60
3.50
—
115-1-50
Oil Sump Heater
1.00
115
115-1-60
8.70
—
115-1-50
Hot Gas*
Bypass
0.20
115
115-1-50/60
2.00
4.75
2†
Compressor
Oil Pump
0.66
220
200/240-3-60
4.34
24.5
430
380/480-3-60
2.15
13.1
563
507/619-3-60
2.14
25.0
230
220/240-3-50
4.84
28.0
393
346/440-3-50
2.59
12.2
3†
Gear
Oil Pump
0.7
204
200/208-3-60
5.7
33.5
220
208/230-3-60
4.2
30.6
460
440/480-3-60
2.1
15.3
575
518/632-3-60
1.7
12.3
205
190/220-3-50
5.0
28.9
410
380/440-3-50
2.5
14.5
4
Pumpout*
Compressor
3.41
204
200/208-3-60
10.90
63.5
230
220/240-3-60
9.50
57.5
460
440/480-3-60
4.70
28.8
575
550/600-3-60
3.80
23.0
400
380/415-3-50
4.70
28.8
LEGEND
FLA — Full Load Amps
LRA — Locked Rotor Amps
*Available as an option on 17EX chillers.
†The compressor and gear oil pump contactors are wired together
on the line side. Their amperage values must be added together
when sizing conductors.
NOTE: The oil pump is powered through a field wiring terminal into
the power panel. Power to the controls and oil heater via the power
panel must be on circuits that can provide continuous service when
the compressor starter is disconnected.
Table 25 — Relief Valve Locations and Data
RELIEF VALVE
LOCATION
HEAT EXCHANGER
SIZE
REQUIRED
C FACTOR
NOMINAL
OUTLET
PIPE SIZE
(in.)
NUMBER OF
VALVES
RATED RELIEF
PRESSURE
Cooler
Condenser
lb air/min.
kg air/sec.
psig
kPa
Cooler
45-47
45-47
216.3
1.64
1
1
⁄
4
FPT
3
225
1551
48
55-57
228.5
1.73
1
1
⁄
4
NPT
3
225
1551
Economizer/Storage
Vessel
ALL
ALL
84.3
0.64
1
1
⁄
4
FPT
2*
225
1551
Pumpout Unit
Condenser
ALL
ALL
1.5
0.01
3
⁄
8
in. Male Flare MPT
1
385
2655
*To ensure relief valve serviceability, and as required in ASHRAE 15,
latest edition, three-way valves and redundant relief valves are in-
stalled on the storage vessel. Only one of the ‘‘No. of Valves’’ listed
are in service at any time.
NOTES:
1. The cooler relief C-factor is for both cooler and condenser vented
through the cooler in accordance with ASHRAE (American
Society of Heating, Refrigeration, and Air Conditioning Engi-
neers) 15, latest edition.
2. Relief valve discharge pipe sizing is to be calculated per latest
version of ASHRAE 15, using the tabulated C-factors and nom-
inal pipe size listed above. Cooler and economizer/storage vessel
rated relief valve pressure is 225 psig (1551 kPa).
3. The pumpout unit condenser contains less than 110 lb (50 kg) of
HFC-134a, which is a Group A1 refrigerant. The ASHRAE 15 stand-
ard exempts small-volume vessels from the requirement to vent
outside. However, Carrier recommends that the pumpout con-
denser be connected to the rest of the vent system.
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