Daikin EWAP460MBYN Сервис мануал онлайн [98/452] 524349

Daikin EWAP460MBYN Сервис мануал онлайн [98/452] 524349
Piping Layout ESIE 05-07
1–86 Part 1 – System Outline
3
11
4
5
Components
refrigeration side
EWWD120~
540MBYNN
The table below describes the main components of the refrigeration circuit on the refrigeration side.
No. Component Function / remark
1 Compressor All compressors are semi-hermetic screw compressors with
step less capacity control.
2 Water-heat exchanger
(evaporator)
The water-heat exchanger is of the brazed plate-heat
exchanger type.
3 Water-heat exchanger
(condenser)
The condenser is a shell and tube type with water flowing
through the tubes and refrigerant flowing through the shell. The
external finned tubes provide an extended surface, creating a
better contact between the refrigerant and the water.
5.1 The thermostatic
expansion valve
The thermostatic expansion valve is set up to control the
superheat between 5°C and 7°C.
5.2 Electronic expansion
valve
Electronic expansion valve with EEV driver to control the
superheat at 5°C (setpoint)
6 Low-pressure
transmitter and High
pressure transmitter
The Low and high pressure transmitter are used to gain
information in order to perform some controls and also act as
safety.
7 High-pressure switch This switch acts as a circuit safety.
P Activation at 17 bar
P Manual reset at HP-Switch
8 Strainer This strainer prevents dirt particles from entering the solenoid
valve of the liquid injection.
9 Water in- and outlet
connections
The water in- and outlet piping connections are delivered with
victolic joint and countrtpipe for welding.
10 Low-pressure service
port
The low-pressure service port is used to connect a low-pressure
gauge.
11 High-pressure service
port
The high-pressure service port is used to connect a
high-pressure gauge.
12 Serviceport Serviceport.
13 Liquid stop valve The liquid stop valve is used as shut-off valve in case of a
pump-down.
14 Suction stop valve
(optional)
This suction stop valve can be used in combination with the
discharge stop valve to seperate the compressor from the
system (for examble: maintenance).
15 Flowswitch The flowswitch is used to check if there is water flow.
16 Filter + drain plug Water filter and drain.
This drain is used to drain the filter element before opening the
filter.
17 Safety valve The safety valves prevent pressure above 28 bar.
18 Drier + charge valve The replaceable filter drier will keep the refrigerant system dry. It
is equipped with a 3/8” charge valve.
ESIE05-07.book Page 86 Wednesday, October 11, 2006 10:42 AM

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