Daikin WMC Specifications download pdf (Page 28)

28 Catalog 602-2

Physical Data

Evaporator

Refrigerant-side design pressure is 200 psi

(1379 kPa). Water-side is 150 psi (1034 kPa).

Approximate total square footage of insulation

surface required for individual packaged chillers is

tabulated by evaporator code and can be found

below. The suction elbow and compressor also

require insulation.

Table 12, Evaporator Physical Data

WMC

Model

Evaporator

Model

Tube

Length

Unit Refrigerant

Charge

lb. (kg)

Evaporator

Water

Volume, gal (L)

Insulation

Area

sq. ft. (m

)

Number of

Relief

Valves

145S 145D

E2209 9 ft. 550 (250) 38 (145) 66 (6.1) 1

150D

E2212 12 ft. 800 (363) 45 (170) 90 (8.3) 1

250D

E2609 9 ft. 600 (272) 61 (231) 76 (7.1) 1

290D

E2612 12 ft. 1100 (500) 72 (273) 102 (9.4) 1

400D

E3012 12 ft. 1240 (562) 88 (336) 114 (11) 1

Notes:

1. Refrigerant charge is approximate since the actual charge will depend on other variables. Actual charge will be shown on the

unit nameplate and is tabulated above.

2. Water capacity is based on standard tube configuration and standard dished heads.

Condenser

With positive pressure systems, the pressure

variance with temperature is always predictable

and the vessel design and pressure 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 quantity of refrigerant

required to reduce system pressure to the valve’s

set pressure, and then close.

Refrigerant-side design pressure is 200 psi (1380

kPa). Water-side design is 150 psi (1034 kPa).

Table 13, Condenser Physical Data

WMC

Model

Condenser

Model

Tube

Length

Maximum

Pumpdown

Capacity lb. (kg)

Water

Volume

gal. (L)

Number of

Relief Valves

145S, 145D

C2009 9 ft. 728 (330) 47 (147) 2

150D

C2012 12 ft. 971 (440) 62 (236) 2

250D

C2209 9 ft. 883 (401) 50 (223) 2

290D

C2212 12 ft. 1174 (533) 72 (273) 2

400D

C2612 12 ft. 1676 (760) 111 (419) 2

Notes:

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.

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