Refrigerant Cycle Diagram - Toshiba RAS-18YKH-E Service Manual

Cooling
0,39m
Heating
(Connecting pipe)
Ø12,7
O.D. : 12,7mm
Cooling
Cooling
Heating
Cooling
Heating
50Hz
Standard
Heating High temperature
Low temperature
Standard
Cooling High temperature
Low temperature
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.

5. REFRIGERANT CYCLE DIAGRAM

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