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Piping Diagrams
SiBE28-804
246
Appendix
3. Piping Diagrams
3.1
Piping Symbol
Components
The table below contains the different components of the piping diagrams.
No.
Component
Function / remark
1
Flare connection
See pipe connection diameter.
2
Liquid stop valve
The liquid stop valve is used as shut-off valve in case of a pump-down.
3
Gas stop valve with
service port
The gas stop valve is used as shut-off valve in case of a pump-down.
4
Compressor
The compressor can restart after 3 min from last stop.
5
Capillary tube
The capillary tube allows pressure equalization during a compressor
OFF-cycle.
6
Electronic
expansion valve
The expansion valve expands the liquid to enable evaporation in the
evaporator. The opening degree is controlled to obtain the optimum
discharge temperature.
7
Heat exchanger
The heat exchanger is of the multi louvre fin type. Hi-X -tubes and
coated waffle louvre fins are used.
8
Filter
The filter is used to collect impurities, which may enter the system
during installation and is also used to avoid blockage of the capillaries
and other fine mechanical parts of the unit.
9
Liquid receiver
The liquid receiver is used to make sure only completely liquefied
refrigerant is sent to the expansion valve. It is also used as a container
in which surplus refrigerant is stored.
10
Check valve with
service port
The check valve allows you to connect a gauge.
11
Low-pressure
sensor
The low pressure sensor is used to control the unit's actuators
(expansion valve, frequency,...)
12
High-pressure
switch
The high-pressure switch stops the operation of the unit when the
pressure becomes abnormally high.
13
Propeller fan and
fan motor
The propeller fan creates air displacement across the heat exhanger.
14
One-way valve
The one-way valve is used to force the refrigerant liquid to flow through
the receiver and the expansion valve in the same direction both in
cooling and heating.
15
4-way valve
(reversing solenoid
valve)
The 4-way valve is used to select refrigerant flow in cooling or heating
mode.
When the 4-way valve switches from ON to OFF, a timer starts counting
up to 150 as soon as the cooling or defrosting operation is stopped. This
delay time is to eliminate the switching sound.
16
Muffler
The muffler is used to absorb the refrigerant noise from the compressor.
17
Solenoid valve
Y1S: Capacity control solenoid valve
Y3S: Liquid injection solenoid valve
SV: Solenoid valve (Purge liquid receiver)
18
Thermistor
R1T: Air thermistor
R2T: Coil thermistor
R3T: Discharge pipe thermistor
Summary of Contents for FHQ100BUV1B x 2
Page 13: ...SiBE28 804 2 ...
Page 19: ...Model Name and Power Supply SiBE28 804 8 General Information ...
Page 29: ...Specifications SiBE28 804 18 Specifications ...
Page 33: ...Wired Remote Controller SiBE28 804 22 Remote Controller 1 2 Installation ...
Page 34: ...SiBE28 804 Wired Remote Controller Remote Controller 23 ...
Page 93: ...Outdoor Unit Fan Speed Control SiBE28 804 82 Functional Description ...
Page 131: ...Test Run and Operation Data SiBE28 804 120 Test Operation ...
Page 251: ...Troubleshooting by Remote Controller Display LED Display SiBE28 804 240 Troubleshooting ...
Page 277: ...PCB Layout SiBE28 804 266 Appendix ...
Page 297: ...RZQ100 140C7 RZQS125 140C7V1B SiBE28 804 286 Removal Procedure ...
Page 311: ...SiBE28 804 iv Index ...