AYXPC18LR
4 – 1
AYXPC18LR
Service Manual
CHAPTER 4.
REFRIGERATION CYCLE
[1] REFRIGERATION CYCLE
1. FLOW OF REFRIGERANT
AY-XPC18LR
AY-XP24LR
2. STANDARD CONDITION
3. TEMPEATURE AT EACH PART AND PRESSURE IN 3-WAY VALVE
* On test run mode
s
s
1
4
C
2
Accumulator
3
Strainer
Strainer
Expansion
valve
Heating
Cooling
Outdoor unit
Condenser
Evaporator
Indoor unit
Reverse valve
Comp-
ressor
Flare coupling
Flare coupling
3-way
valve
(GAS)
2-way
valve
(LIQUID)
Silencer
Coil
Muffler
s
1
4
2
Accumulator
Sub
Accumu-
lator
Muffler
3
Strainer
s
Strainer
Expansion
valve
Heating
Cooling
Outdoor unit
Condenser
Evaporator
Indoor unit
Reverse valve
Comp-
ressor
Flare coupling
Flare coupling
3-way
valve
(GAS)
3-way
valve
(LIQUID)
Silencer
Coil
C
Indoor side
Outdoor side
Dry-bulb Temperature
Relative humidity
Dry-bulb Temperature(
°
C)
Relative humidity
Cooling
27
°
C
47%
35
°
C
40%
Heating
20
°
C
–
7
°
C
87%
MODEL
AY-XPC18LR
AY-XP24LR
No. Condition
Cooling
Heating
Cooling
Heating
Temp. on
(
°
C)
74
82
79
83
Temp. on
(
°
C)
41
4
39
5
Temp. on
(
°
C)
12
34
13
29
Temp. on
(
°
C)
12
6
10
3
3-way valve pressure (MPaG)
0.88
2.83
0.83
3.02
1
2
3
4