Daikin EWAP460MBYN Сервис мануал онлайн [86/452] 524349

Daikin EWAP460MBYN Сервис мануал онлайн [86/452] 524349
Piping Layout ESIE 05-07
1–74 Part 1 – System Outline
3
11
4
5
Components
refrigeration side
EWAD120~
340MBYNN
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.
4 Fan Direct driven single speed motor.
5 Expansion valve The thermostatic expansion valve is set up to control the
superheat between 5°C and 7°C.
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.
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.
19 Sightglass with
moisture indicator
The sightglass with moisture indicator is used to check the
refrigerant shortage and/or moisture level in the system.
ESIE05-07.book Page 74 Wednesday, October 11, 2006 10:42 AM

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