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–EIMWC00803-21_01EN - 21/57
4.9
PHYSICAL DATA AND WEIGHTS
4.9.1
Evaporator
The standard insulation of cold surfaces includes the evaporator and non -connection water head, suction piping,
compressor inlet, motor housing, and motor coolant outlet line.
It is 20 mm (3/4
”) thick ABS/PVC flexible foam with a skin. The K factor is 0.28 at 75°F. Sheet insulation is fitted and
cemented in place forming a vapor barrier.
Refrigerant-side design pressure is 13.7 bar on DWSC.Water-side is 10 bar on all standard units.
In the event insulation is to be field-installed, none of the cold surfaces identified above will be factory insulated. Required
field insulation is shown beginning on page 19. Approximate total square footage of insulation surface required for individual
packaged chillers is tabulated by evaporator code and can be found below.
Table 3 - Evaporator Data
Evaporator code
Refrigerant charge
(kg)
Water Capacity
(l)
Insulation Area
(m
2
)
Vessel
Weight
(kg)
Number of
Relief Valves
1
” NPT
E2410
410
280
9
1373
1
E2610
500
340
10
1655
1
E3210
579
630
12
2122
1
E3810
888
960
14.5
3100
1
E4410
1275
1390
17
3849
2
1. Refrigerant charge is approximate since the actual charge will depend on other variables. Actual charge will be shown
on the unit nameplate.
2. Water capacity is based on standard tube configuration and standard dished heads.
3. The evaporator charge includes the maximum condenser charge available with that evaporator and is therefore the
maximum charge for a total unit with the evaporator. Actual charge for a specific selection can vary with tube count
and can be obtained from the Daikin Selection Program.
4.9.2
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, R-513a and R-1234ze require PED/ASME vessel
design, inspection and testing and use 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 13,7 bar on DWSC units. Water side design is 10 bar on all.
4.9.3
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 4 - Condenser Data
Condenser Code
Pumpdown Capacity
(m
3
)
Water Capacity
(l)
Vessel Weight
(kg)
Number of Relief
Valves 1
” NPT
C2210
0.5
370
1625
1
C2410
0.5
465
2017
1
C2810
0.7
616
2314
1
C3010
0.8
717
2499
1
C3210
0.9
852
2706
1
C3810
1.2
1257
3952
1
C4010
1.3
1418
4224
2
1. Condenser pumpdown capacity based on maximum tubes number for the maximum charge at 36 °C.
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.
