Service manual

12
MUZ-SF50VE MUZ-SF50VEH
Unit: mm
Outdoor
heat
exchanger
Flared connection
Defrost
thermistor
RT61
Discharge
temperature
thermistor
RT62
Flared connection
Stop valve
Stop valve
(with service port)
Capillary tube
ø 4.0 × ø 2.4 × 100
Capillary tube
ø 4.0 × ø 2.4 × 200
Refrigerant flow in cooling
Compressor
4-way valve
Refrigerant flow in heating
Refrigerant pipe
ø 12.7
(with heat insulator)
Refrigerant pipe ø 6.35
(with heat insulator)
LEV
R.V. coil
heating ON
cooling OFF
Muffler
#100
Strainer
#100
Outdoor heat
exchanger
temperature
thermistor
RT68
Am
b
te
m
the
r
RT
6
Strainer
#100
Muffler
Capillary tube
ø3.0×ø2.0×200(×4)
Max. Length
A
Max. Height
difference
B
Indoor
unit
Outdoor unit
MAX. REFRIGERANT PIPING LENGTH and MAX. HEIGHT DIFEFRENCE
Refrigerant piping: m Piping size O.D: mm
Max. Length A Max. Height difference B Gas Liquid
MUZ-SF25/35/42 20 12 9.52
6.35
MUZ-SF50 30 15 12.7
ADDITIONAL REFRIGERANT CHARGE (R410A: g)
Model
Outdoor unit
precharged
7 m 8 m 9 m 10 m 11 m 12 m 13 m 14 m 15 m 20 m
MUZ-SF25 700
0 30 60 90 120 150 180 210 240 390
MUZ-SF35 800
MUZ-SF42 1,150
Calculation: X g = 30 g/m × (Refrigerant piping length (m) - 7)
Model
Outdoor unit
precharged
Refrigerant piping length (one way)
7 m 10 m 15 m 20 m 25 m 30 m
MUZ-SF50 1,550 0 60 160 260 360 460
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.
OBH629