Refrigerant System Diagram - Mitsubishi Electric MUZ-DM25VA Service Manual

7

REFRIGERANT SYSTEM DIAGRAM

MUZ-DM25VA MUZ-DM35VA
Refrigerant pipe ø9.52
(with heat insulator)
Flared connection
Flared connection
Refrigerant pipe ø6.35
(with heat insulator)
MAX. REFRIGERANT PIPING LENGTH and MAX. HEIGHT DIFFERENCE
Model
MUZ-DM25VA
MUZ-DM35VA
ADDITIONAL REFRIGERANT CHARGE (R410A : g)
Outdoor unit
Model
precharged
MUZ-DM25VA
MUZ-DM35VA
Calculation: X g = 20 g/m (Refrigerant piping length (m) - 7)
NOTE : Refrigerant piping exceeding 7 m requires additional refrigerant charge according to the calculation.
OBH751
Muffler
Stop valve
(with service port)
Capillary tube
ø ø
3.0 × 1.4 × 260
Stop valve
(with strainer)
Refrigerant piping: m
Max. Length Max. Height difference
A
20
Indoor
unit
Max. Height
difference
B
5 m 6 m
700
0 0
720
4-way valve
Muffler
Discharge
temperature
thermistor
RT62
Compressor
LEV
B
12
Max. Length
A
Refrigerant piping length (one way)
7 m 8 m 9 m 10 m
0 20 40 60
9
Outdoor
heat
exchanger
Defrost
thermistor
RT61
Strainer
#100
R.V. coil
heating OFF
cooling ON
Refrigerant flow in cooling
Refrigerant flow in heating
Piping size O.D: mm
Gas
9.52
Outdoor unit
11 m 12 m 13 m 14 m
80 100 120 140
Unit : mm
Liquid
6.35
15 m 20 m
160 260