22
Centrifugal Chillers
D-EIMWC00804-14EN
Condenser
With positive pressure systems, the pressure variance with temperature is always predictable,
and the vessel design and relief protection are based upon pure refrigerant characteristics. R-
134a requires ASME vessel design, inspection and testing and uses spring-loaded pressure
relief valves. When an over pressure condition occurs, spring-loaded relief valves purge only
that refrigerant required to reduce system pressure to their set pressure, and then close.
Refrigerant side design pressure is 200 psi (1380 kPa) on DWSC/DWCC/DHSC units and 225
psi (1552 kPa) on DWDC units. Water side design is 150 psi (1034 kPa) on all.
Pumpdown
To facilitate compressor service, all Daikin centrifugal chillers are designed to permit
pumpdown and isolation of the entire refrigerant charge in the unit’s condenser. Dual
compressor units and single compressor units equipped with the optional suction shutoff valve
can also be pumped down into the evaporator.
Table 3, Condenser Physical Data
Condenser
Code
DWSC
DWDC
DWCC
Pumpdown
Capacity
lb. (kg)
Water
Capacity
gal. (L)
Vessel Weight
lb. (kg)
Number
of Relief
Valves
C1609
X
468 (213)
33 (125)
1645 (746)
2
C1612
X
677 (307)
33 (123)
1753 (795)
2
C1809
X
597 (271)
43 (162)
1887 (856)
2
C1812
X
845 (384)
44 (166)
2050 (930)
2
C2009
X
728 (330)
47 (147)
1896 (860)
2
C2012
X
971 (440)
62 (236)
2528 (1147)
2
C2209
X
822 (372)
73 (278)
2596 (1169)
2
C2212
X
1183 (537)
76 (290)
2838 (1287)
2
C2212
X
1110 (504)
89 (337)
3075 (1395)
2
C2216
X
1489 (676)
114 (430)
3861 (1751)
2
C2416
X
1760 (799)
143 (540)
4647 (2188)
2
C2609
X
1242 (563)
83 (314)
2737 (1245)
2
C2612
X
1656 (751)
111 (419)
3650 (1660)
2
C2616
X
2083 (945)
159 (603)
5346 (2425)
2
C3009
X
1611 (731)
108 (409)
3775 (2537)
2
C3012
X
2148 (975)
144 (545)
5033 (3383)
2
C3016
X
2789 (1265)
207 (782)
6752 (3063)
4
C3612
X
2963 (1344)
234 (884)
7095 (3219)
2
C3616
X
3703 (1725)
331 (1251)
9575 (4343)
4
C3620
X
4628 92100)
414 (1567)
12769 (5797)
4
C4212
X
3796 (1722)
344 (1302)
9984 (4529)
2
C4216
X
5010 (2273)
475 (1797)
12662 (5743)
4
C4220
X
5499 (2494)
634 (2401)
17164 (7785)
4
C4220
X
5499 (2497)
634 (2400)
17964 (8156)
4
C4812
X
4912 (2228)
488 (1848)
12843 (5826)
4
C4816
X
5581 (2532)
717 (2715)
18807 (8530)
4
C4820
X
7034 (3191)
862 (3265)
23106 (10481)
4
C4820
x
7034 (3193)
862 (3263)
24306 (11045)
4
1.
Condenser pumpdown capacity based on 90% full at 90
°
F.
2.
Water capacity based on standard configuration and standard heads and can be less with lower tube counts.
3.
See Relief Valves section for additional information.
Compressor
Table 4, Compressor Weights
Compressor Size
⇒
050
063
079
087
100
113
126
Weight lb. (kg)
⇒
870 (390)
3200 (1440)
3200 (1440)
3200 (1440)
6000 (2700)
6000 (2700)
6000 (2700)
