Service manual

AYAP7FHR
5 – 1
AYAP7FHR
Service Manual
CHAPTER 5. REFRIGERATION CYCLE AND PERFORMANCE CURVES
[1] REFRIGERATION CYCLE
1. Refrigeration cycle
1.1. AY-AP7FHR
1.2. AY-AP9FHR
2. Standard conditions
* REFRIGERANT PIPE LENGTH 5m
3. Temperature at each part and pressure in 3-way
valve
4. Dimension of Capillary tube
1
4
C
2
Capillary
tube A
Capillary
tube B
Capillary
tube C
(2 pieces)
Accumulator
3
Heating Cooling
Outdoor unit
Condenser
Evaporator
Indoor unit
Reverse valve
Comp-
ressor
Flare coupling Flare coupling
3-way
valve
2-way
valve
Silencer
Coil
1
4
C
2
Capillary
tube A
Capillary
tube B
Accumulator
3
Heating Cooling
Outdoor unit
Condenser
Evaporator
Indoor unit
Reverse valve
Comp-
ressor
Flare coupling Flare coupling
3-way
valve
2-way
valve
Silencer
Coil
Cooling Heating
Indoor side
Dry-bulb Temp. 27°C20°C
Relative Humidity 47% –
Outdoor side
Dry-bulb Temp. 35°C7°C
Relative Humidity 40% 87%
Model
AY-AP7FHR AY-AP9FHR
NO. Condition Cooling Heating Cooling Heating
172°C69°C72°C75°C
242°C2°C42°C2°C
312°C31°C12°C33°C
413°C7°C11°C4°C
3-way valve
pressure
(MPaG)
1.03 2.25 0.95 2.35
Model AY-AP7FHR AY-AP9FHR
O.D I.D L O.D I.D L
Capillary tube A φ2.7 φ1.3 600 φ2.7 φ1.3 250
Capillary tube B φ2.7 φ1.3 500 φ2.7 φ1.3 850
Capillary tube C φ2.7 φ1.5 150 – – –