47
7-2. REFRIGERANT SYSTEM DIAGRAM
Flare
Flare
Strainer
#100
Strainer
#100
Strainer
#100
Strainer
Strainer
(Refrigerant flow)
Cooling
Heating
#50
Strainer
Compressor
(MC)
Electronic expansion valve (SLEV
W
1)
W
1 Only PUMY-125VMA,VMA
1
: LEV(A)
Accumulator
Overcooling heat exchanger
Outdoor heat exchanger
Service port
Service port
Thermistor TH2
(Low pressure saturated
temperature detection)
Capillary
tube 2
Capillary
tube 3
Oil
separator
Check valve
(low pressure)
Thermistor THHS
(Ipm radiator panel
temperature detection)
W
Only PUMY-125VMA model
Thermistor THHS-A
Thermistor THHS-B
Thermistor TH6
(outdoor temperature detection)
4-way
valve
High-pressure sensor
discharge pressure detection
(63HS)
Capillary
tube 1
Check valve
(High prssure)
Solenoid
valve
Thermistor TH5
(pipng temperature
detection / judging
defrost)
Thermistor
TH1
(discharge
temperature
detection)
Outdoor unit
Refrigerant Piping Specifications (dimensions of flared connector)
Indoor unit
Outdoor unit
Capacity
Item
20 , 25 , 32 , 40
50 , 63 , 71, 80
100 , 125
71
125
Liquid piping
Gas piping
{
6.35 <1/4”>
{
9.52 <3/8”>
{
9.52 <3/8”>
{
9.52 <3/8”>
{
9.52 <3/8”>
{
12.7 <1/2”>
{
15.88 <5/8”>
{
19.05 <3/4”>
{
15.88 <5/8”>
{
19.05 <3/4”>
(
{
4
O
{
3.0
O
500
r
)
O
2
{
2.5
O
{
0.6
O
500
r
{
2.5
O
{
0.6
O
500
r
PUMY-71VM
PUMY-71VM
1
PUMY-71VM
2
Capillary tube 1(for return
of oil from oil separator)
Capillary tube 2
(for Evaporating tempera-
ture detection)
Capillary tube 3(for maintaining
equilibrium between upper and
lower coils)
About the Compressor
This system has a scroll compressor. This compressor uses a low pressure shell that typically has a temperature in the
range 30-80°C.
In addition, compressor wiring should be in the direction of rotation to the right. Wire colors are red (U), white(V),
blue or black (W), yellow and yellow (thermal switch).
(
{
4
O
{
3.0
O
200
r
)
O
2
{
2.5
O
{
0.6
O
500
r
{
2.5
O
{
0.6
O
500
r
PUMY-125VM
PUMY-125VM
1
PUMY-125VM
2
PUMY-125YM
PUMY-125YM
1
PUMY-125VMA
PUMY-125VMA
1
PUMY-125YMA
Unit : mm <inch>
OC183E--2.qxp 10.5.6 0:47 PM Page 47
