Daikin EUWAC5FZW Сервис мануал онлайн [91/264] 524370

Daikin EUWAC5FZW Сервис мануал онлайн [91/264] 524370
Piping Layout ESIE-0302
1–82 Part 1 – System Outline
3
1
1
4
5
Components The table below describes the components.
No. Component Function / remark
1 Compressor A hermetically sealed scroll compressor.
2 Water-heat exchanger
(evaporator)
The water-heat exchanger is of the brazed plate-heat exchanger
type.
3 Air-heat exchanger
(condenser)
The air-heat exchanger is of the cross fin coil type. Hi-X-tubes
and PE coated waffle louvre fins are used. The air is discharged
horizontal.
4 Fan Centrifugal fan with belt driven fan motor.
5 Expansion valve The thermostatic expansion valve is set up to control the
superheat between 5°C and 7°C.
6 Low-pressure switch This switch acts as a circuit safety.
Standard setting: OFF = 1.2 bar ± 0.2
Standard setting: ON = 2 bar ± 0.3
ZL/ZH setting: OFF = 0.5 bar ± 0.2
ZL/ZH setting: ON = 1.5 bar ± 0.3
7 High-pressure switch This switch acts as a circuit safety.
Standard setting: OFF = 30.9 bar +0/-1
Standard setting: ON = 21.6 bar ± 0.1
8 Strainer This strainer prevents dirt particles from entering the expansion
valve.
9 Water in- and outlet
connections
The water in- and outlet connections are made of galvanized
steel pipe (British Standard Pipe - BSP). The pipes are not
insulated.
If copper field piping is used for the water circuit, then precau-
tion should be taken to prevent electrolytic corrosion.
10 Low-pressure
service port
The low-pressure service port is used to connect a
low-pressure gauge.
11 Low-pressure gauge Standard is a low-pressure gauge fitted to the unit.
12 High-pressure
service port
The high-pressure service port is used to connect a
high-pressure gauge.
13 High-pressure gauge Standard is a high-pressure gauge fitted to the unit.
14 Water temperature
sensor
The water temperature sensors are used to control the
thermostat function at the heat exchanger inlet.
15 Freeze-up sensor This protection device shuts down the circuit when the tempera-
ture of the chilled water becomes too low in order to prevent the
water from freezing during operation.
16 Fan speed control
connection
Check valves used for head pressure control (factory installed).

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