Mitsubishi Electric MUZ-EF25VE - E1 Service Manual page 12

MUZ-EF50VE
Refrigerant pipe ø 12.7
(with heat insulator)
Flared connection
Flared connection
Refrigerant pipe ø 6.35
(with heat insulator)
MAX. REFRIGERANT PIPING LENGTH and MAX. HEIGHT DIFEFRENCE
MUZ-EF25/35/42
MUZ-EF50
ADDITIONAL REFRIGERANT CHARGE (R410A: g)
Model
MUZ-EF25
MUZ-EF35/42
Calculation: X g = 30 g/m × (Refrigerant piping length (m) - 7)
Outdoor unit
Model
precharged
MUZ-EF50
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.
OBH590B
4-way valve
Stop valve
(with service port)
Strainer
#100
Stop valve
Refrigerant piping: m
Max. Length A Max. Height difference B
20
30
Indoor
unit
Max. Height
difference
B
Outdoor unit
precharged
7 m
800
0
1,150
7 m
1,450 0
Muffler
#100
Discharge
temperature
thermistor
RT62
Compressor
LEV
Strainer
#100
Muffler
Capillary tube
ø 4.0 ×ø 2.4 × 100
12
15
Max. Length
A
Outdoor unit
8 m 9 m 10 m 11 m
30 60 90 120
Refrigerant piping length (one way)
10 m 15 m
60 160
12
Outdoor
heat
Ambient
exchanger
temperature
Defrost
thermistor
thermistor
RT65
RT61
Outdoor heat
exchanger
temperature
thermistor
RT68
R.V. coil
heating ON
cooling OFF
Refrigerant flow in cooling
Refrigerant flow in heating
Piping size O.D: mm
Gas
9.52
12.7
12 m 13 m 14 m
150 180 210
20 m 25 m
260 360
Unit: mm
Liquid
6.35
15 m 20 m
240 390
30 m
460