Cooling; Refrigerant System Diagram - Mitsubishi Electric MUZ-FD25VA-E1 Service Manual

7

REFRIGERANT SYSTEM DIAGRAM

MUZ-FD25VA
MUZ-FD25VAH
MUZ-FD35VA
MUZ-FD35VAH
MAX. REFRIGERANT PIPING LENGTH and MAX. HEIGHT DIFFERENCE
Model
MUZ-FD25VA
MUZ-FD25VAH
MUZ-FD35VA
MUZ-FD35VAH
Indoor
unit
Max. Height
difference
ADDITIONAL REFRIGERANT CHARGE (R410A:g)
Outdoor unit
Model
precharged
MUZ-FD25VA
MUZ-FD25VAH
MUZ-FD35VA
MUZ-FD35VAH
NOTE: Refrigerant piping exceeding 7 m requires additional refrigerant charge according to the calculation.
Refrigerant pipe [9.52
(with heat insulator)
Stop valve
(with service port)
Flared connection
Flared connection
Stop valve
(with strainar)
Refrigerant pipe [6.35
(with heat insulator)
Refrigerant piping : m
Max. length
A
20
B
Max. length
A
5m 6m
0
1,150 0
4-way valve
Muffler
Discharge
temperature
thermistor
RT62
Capillary tube
[3.0 [1.8 600( 2)
LEV
Capillary tube
[3.0 [2.0 240
Max. Height difference
B
12
Outdoor unit
Refrigerant piping length (one way)
7m 8m 9m 10m
0
120 150
90
Calculation : Xg=30 g/m
10
Outdoor
Muffler
heat
exchanger
Compressor
Defrost
thermistor
RT61
Strainer
#100
R.V. coil
heating ON
cooling OFF
Refrigerant flow in cooling
Refrigerant flow in heating
Piping size O.D : mm
Gas
9.52
11m 12m 13m 14m
180 270
210 240
(Refrigerant piping length (m)–7)
Unit:mm
Outdoor heat
exchanger
temperature
thermistor
RT68
Ambient
temperature
thermistor
RT65
Liquid
6.35
15m 20m
300 450