Carrier 17EX Start-Up, Operation And Maintenance Instructions Manual page 104

POWER SOURCE
1
Oil Sump Heater
2†
3†
4
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.
HEAT EXCHANGER
RELIEF VALVE
LOCATION
Cooler
45-47
Cooler
48
Economizer/Storage
ALL
Vessel
Pumpout Unit
ALL
Condenser
*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.
Table 24 — Auxiliary Systems, Electrical Data
ITEM AVERAGE kW
Seal Leakage
0.23
Pump
Motor Space
0.50
Heater
Control Module
0.40
and Actuator
1.00
Hot Gas*
0.20
Bypass
Compressor
0.66
Oil Pump
Gear
0.7
Oil Pump
Pumpout*
3.41
Compressor
Table 25 — Relief Valve Locations and Data
REQUIRED
SIZE C FACTOR
Condenser lb air/min.
45-47 216.3
55-57 228.5
ALL 84.3
ALL 1.5
DESIGN CENTER
VOLTAGE
115
115
115
115
115
220
430
563
230
393
204
220
460
575
205
410
204
230
460
575
400
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.
NOMINAL
OUTLET
PIPE SIZE
kg air/sec.
(in.)
1.64 1 1 ⁄ FPT
4
1.73 1 1 ⁄ NPT
4
0.64 1 ⁄ FPT
1
4
0.01 3 ⁄ in. Male Flare MPT
8
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.
104
SUPPLY
FLA
V-PH-Hz
115-1-50/60 4.78
115-1-50/60 4.35
115-1-60
3.50
115-1-50
115-1-60
8.70
115-1-50
115-1-50/60 2.00
200/240-3-60 4.34
380/480-3-60 2.15
507/619-3-60 2.14
220/240-3-50 4.84
346/440-3-50 2.59
200/208-3-60 5.7
208/230-3-60 4.2
440/480-3-60 2.1
518/632-3-60 1.7
190/220-3-50 5.0
380/440-3-50 2.5
200/208-3-60 10.90
220/240-3-60 9.50
440/480-3-60 4.70
550/600-3-60 3.80
380/415-3-50 4.70
RATED RELIEF
NUMBER OF
PRESSURE
VALVES
psig
3 225
3 225
2* 225
1 385
LRA
21.7
4.35
—
—
4.75
24.5
13.1
25.0
28.0
12.2
33.5
30.6
15.3
12.3
28.9
14.5
63.5
57.5
28.8
23.0
28.8
kPa
1551
1551
1551
2655