13
MSC-12RV-
E3
MUX-25TV-
E1
OUTDOOR UNIT
INDOOR UNIT
UNIT A
Indoor
heat
exchanger
Indoor coil
thermistor
RT12
Room
temperature
thermistor
RT11
Outdoor
heat
exchanger
(With insulation)
Refrigerant pipe
{
12.7
{
12.7
(With insulation)
Refrigerant pipe
{
6.35
Flared connection
Stop valve
with service port
Stop valve
Capillary tube
{
3.0
✕
{
1.6
✕
550
Compressor(MC1)
MSC-12RV
E3
UNIT B
Indoor
heat
exchanger
Indoor coil
thermistor
RT12
Room
temperature
thermistor
RT11
(With insulation)
Refrigerant pipe
(With insulation)
Refrigerant pipe
{
6.35
Flared connection
Stop valve
with service port
Stop valve
Capillary tube
{
3.0
✕
{
1.6
✕
600
Compressor(MC2)
MSC-12RV
E3
L
L
H
H
MSC-12RV
Indoor unit B
E3
MUX-25TV
Outdoor unit
Additional piping max. length 10m
E1
MSC-12RV
Indoor unit A
E3
MAX. REFRIGERANT PIPING LENGTH & MAX. HEIGHT DIFFERENCE
Outside diameter
Insulation
UNIT No.
Pipe
mm
thickness
Insulation material
and
UNIT
For liquid
6.35
8 mm
Heat resisting foam plastic
For gas
12.7
8 mm
0.045 specific gravity
B
A
ADDITIONAL REFRIGERANT CHARGE (R22:g)
PIPING PREPARATION
1
Table below shows the specifications of pipes commercially available.
2
Ensure that the 2 refrigerant pipes are well insulated to prevent condensation.
3
Refrigerant bending radius must be 10cm or more.
Unit: mm
0
15
30
45
60
75
90
105
120
7m
Refrigerant piping length (one way)
A
UNIT
B
UNIT
Outdoor unit
precharged (g)
900
8m
9m
10m
11m
12m
13m
14m
15m
900
Max. limits
UNIT No.
,
B
A
Pipe length
15m
L
Height difference (H)
10m
No. of bends
10
OB284-1.qxp 01.4.26 8:59 PM Page 13
