Daikin EUWL KZW1 Series Service Manual page 43

ESIE-0303
Components The table below describes the components.
refrigeration side
No.
1
2
3
4
5
6
7
8
9
10
11
Part 1 – System Outline
Component Function / remark
Compressor A hermetically sealed scroll compressor.
Water-heat exchanger The water-heat exchanger is of the brazed plate-heat exchanger
(evaporator, type.
condenser)
Expansion valve The thermostatic expansion valve is set up to control the
superheat between 5°C and 7°C.
Low-pressure switch This switch acts as a circuit safety.
■
■
■
■
High-pressure switch This switch acts as a circuit safety.
■
■
Strainer This strainer prevents dirt particles from entering the expansion
valve.
Water in- and outlet The water in- and outlet connections are made of galvanized
connections 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.
Low-pressure The low-pressure service port is used to connect a
service port low-pressure gauge.
High-pressure The high-pressure service port is used to connect a
service port high-pressure gauge.
Water temperature The water temperature sensors are used to control the
sensor thermostat function at the heat exchanger inlet.
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.
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
Standard setting: OFF = 30.9 bar +0/-1
Standard setting: ON = 21.6 bar ± 0.1
Piping Layout
1
3
4
5
1–35