Mitsubishi MCFH-13NV Service Manual page 15

MCFH-24NV-
E3
INDOOR UNIT
Indoor
heat
Distributor
exchanger
Coil temperature
thermistor
RT12
Room temperature
thermistor
RT11
Refrigerant flow in cooling
Refrigerant flow in heating
MAX. REFRIGERANT PIPING LENGTH & MAX. HEIGHT DIFFERENCE
Models
MCFH-13NV - E4
MCFH-18NV - E3
MCFH-24NV - E3
wIt does not matter which unit is higher.
ADDITIONAL REFRIGERANT CHARGE (R22 : g)
If pipe length exceeds 7m, additional refrigerant (R22) charge is required
Models
MCFH-13NV - E4
MCFH-18NV - E3
MCFH-24NV - E3
Calculation : (MCFH-13/18NV) g=50g/m (Refrigerant piping length (m)-7)
(MCFH-24NV) g=65g/m (Refrigerant piping length (m)-7)
Refrigerant pipe [15.88
(with heat insulator)
Stop valve
(with service port)
Flared connection
Flared connection
Strainer
Stop valve
Refrigerant pipe
[9.52
(with heat insulator)
Refrigerant piping MAX. length :mm
A
15
A: Refrigerant piping Max.length 15m
Outdoor unit:precharged
(up to 7m)
1,350
1,800
2,400
4-way valve
Muffler
Accumulator
Capillary tube
Check
[3.0o[1.6o350
valve
Capillary tube
Check
valve
Piping size O.D. : mm
Gas
{12.7
{15.88
Refrigerant piping length (one way)
7m 8m 9m 10m
50 100 150
0
65 130 195
15
MUCFH-24NV-
OUTDOOR UNIT
Outdoor
Strainer
heat
exchanger
Compressor
Discharge pressure
regurator
[3.0o[2.0o350
Capillary tube
R.V.coil
[4.0o[2.4o200 heating ON
cooling OFF
Liquid
{6.35
{9.52
11m 12m 13m 14m
200 250 300 350
260 325 390 455
E3
15m
400
520