Electrolux EHG 678 B Instrukcja Użytkownika Pobierz pdf (Strona 3)

134

WDA

039 045 050 060 070 080 090 110 120 130

38,8 44,3 52,4 59,3 66,0 78,9 90,4 99,7 112,8 125,8

13,2 15,3 19,4 21,1 22,4 25,9 29,6 33,4 37,7 42,2

6,7 7,6 9,0 10,2 11,3 13,5 15,5 17,1 19,4 21,6

111 132 140 162 171 208 259 265 312 320,5

32 42 44 53 62 68 74 80 88,5 97

400/3/50

2/1 2/1 2/1 2/1 2/1 2/1 2/1 2/1 2/1 2/1

74 74 75 76 76 77 77 78 78 79

46 46 47 48 48 49 49 50 50 51

152 162 190 210 240 260 300 320

145,0 162,6 178,3 197,8 221,4 245,8 277,5 314,0

48,0 53,9 59,2 66,5 76,3 85,1 96,9 108,6

24,9 27,9 30,6 33,9 38,0 42,2 47,6 53,9

358,5 375,4 333 345 400,5 417,5 472,4 506,2

113,9 130,8 148, 160 177 194 227,8 261,6

400/3/50

2/1 2/1 4/2 4/2 4/2 4/2 4/2 4/2

79 79 80 82 82 82 84 84

51 51 52 54 54 54 56 56

Versions WDA/EV

Cooling capacity

(5)

Compressor input power

(5)

Water ﬂow

(5)

Peak current A

Max input current A

Power supply

V/Ph/Hz

Compressors / Circuits n°

Sound power level

(3)

dB(A)

Sound pressure level

(4)

dB(A)

Versions WDA/EV

Cooling capacity

(5)

Compressor input power

(5)

Water ﬂow

(5)

Peak current A

Max input current A

Power supply

V/Ph/Hz

Compressors / Circuits n°

Sound power level

(3)

dB(A)

Sound pressure level

(4)

dB(A)

(5)

For EV version: condensing temperature 50 °C, water temperature in/out 12/7 °C.

(3)

Sound power level in accordance with ISO 9614. (LS verions).

(4)

Sound pressure level at 10 mt from the unit in free ﬁeld conditions direction factor Q = 2 in accordance with ISO 9614 (LS versions)

and control and pressure safety device (for

compliance with PED regulations).

Also available is an electronic expansion

valve with electronic control which optimi-

ses the efﬁciency in part load conditions

(option),

COMPRESSORS

The compressors utilised are scroll type.

All compressors are ﬁtted with a crankcase

heater and each compressor has a klixon

embedded in the motor winding for thermal

overload protection. The crankcase heater

is always energised when the compressor

is in stand-by. Access to the compressors

is through the front and side panels. The

compressors used are all in tandem con-

ﬁguration. This results in much higher ef-

ﬁciencies at part loads compared to units

with independent refrigerant circuits.

CONDENSERS

The condensers are braze welded, plate

type heat exchangers, manufactured from

FRAME

All WDA units are made from hot-galvani-

sed sheet steel, painted with polyurethane

powder enamel and stoved at 180°C to

provide maximum protection against cor-

rosion. The frame is self-supporting with

removable panels. All screws and rivets

used are made from stainless steel. The

standard colour of the units is RAL 9018.

REFRIGERANT CIRCUIT

The refrigerant utilised is R410A. The refri-

gerant circuit is assembled using internatio-

nally recognised brand name components

with all brazing and welding being perfor-

med in accordance with ISO 97/23. Each

refrigerant circuit is totally independent

from the other. Failure of one circuit does

not inﬂuence the other circuit. The refrige-

rant circuit includes: sight glass, ﬁlter drier,

reversing valve (for heat pump version

only), one way valve (for heat pump version

only), liquid receiver (for heat pump version

only), Schraeder valves for maintenance

AISI 316 stainless steel. Utilisation of this

type of exchanger results in a massive re-

duction of the refrigerant charge of the unit

compared to the traditional shell-in-tube

type. A further advantage is a reduction in

the overall dimensions of the unit and an in-

crease in efﬁciency of the refrigerant cycle

in partial loads.. From size 039 to size 162

they have a single water side circuit, from

size 144 upwards they are double circuit

“cross ﬂow” type.

EVAPORATORS

The evaporators are braze welded, plate

type heat exchangers, manufactured from

AISI 316 stainless steel. From size 039 to

size 162 they have a single water side cir-

cuit, from size 190 upwards they are double

circuit “cross ﬂow” type.

All units are supplied with a sub-cooler to

enhance the performance of the refrigerant

cycle. The evaporators are factory insula-

ted with ﬂexible close cell material and are

supplied with a temperature sensor as anti-

freeze protection.

1 2 3 4 5 6

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