– 9 –
Mark ( ) means check points of Gas Leak
Cooling
Heating
INDOOR UNIT A
T1
Indoor heat
exchanger
Cross flow fan
P
Accumulator
Compressor
PH280X3-4MS
Packed valve
(Ø12,7)
Gas container connection (Reinstall etc.)
(Note)
Maximum pipe length is 15m
Maximum pipe head is 6m
Packed valve
(Ø6,35)
Capillary tube
Ø1,2 x 700
Capillary tube
Ø1,7 x 600
Liquid tank
550cc
Heating
Heating
4-way valve
Cooling
Cooling
Heating
Cooling
O.D. : 12,7mm
O.D. : 6,35mm
Outdoor heat exchanger
Propeller fan
Refrigerant
R-22 1,45kg
OUTDOOR UNIT
0,39m
(Connecting pipe)
Ø12,7
0,49m
(Connecting pipe)
Ø6,35
5. REFRIGERANT CYCLE DIAGRAM
Standard pressure
Surface temp. of heat
50Hz
P
exchanger interchanging
Fan speed
(kg/cm²G)
pipe T1 (°C)
(indoor)
18YAH-E, A
18YKH-E, A
Standard
21,0
53,0
High
Heating
High temperature
*
1
20,5 to 25,5
52,0 to 61,0
Low
Low temperature
17,0
45,0
High
Standard
3,0
9,0
High
Cooling
High temperature
3,5
11,0
High
Low temperature
2,5
1,5
Low
Ambient temp.
conditions DB/WB
(°C)
Indoor
Outdoor
20/–
7/6
27/–
21/15
20/–
–10/–10
27/19
35/24
32/23
43/26
21/15
21/15
Note :
• Measure the heat exchanger temperature at the center of U-bend. (By means of TC sensor.)
*1 • During heating overload, the high temperature limit control operation is included.
