6refrigerant system diagram, Muz-fd09na muz-fd12na, Additional refrigerant charge (r410a : oz.) – MITSUBISHI ELECTRIC MUZ-FD09NA- U1 User Manual

Page 8

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REFRIGERANT SYSTEM DIAGRAM

Unit:inch

MUZ-FD09NA MUZ-FD12NA

Outdoor

heat

exchanger

Flared connection

Defrost

thermistor

RT61

Discharge
temperature
thermistor
RT62

Service

port

Service

port

Flared connection

Stop valve

(with strainer)

Stop valve
(with service port)

Refrigerant flow in cooling

Compressor

4-way valve

Refrigerant flow in heating

Refrigerant pipe ø3/8
(with heat insulator)

Refrigerant pipe 1/4
(with heat insulator)

R.V. coil
heating ON
cooling OFF

Strainer
#100

Capillary tube

Expansion
valve

Ambient

temperature

thermistor

RT65

Muffler

O.D. 0.118 × I.D. 0.071

Ч 23-5/8

(ш3.0 Ч ш1.8 Ч 600)

Capillary tube

O.D. 0.118

×

I.D. 0.079

Ч

9-7/16

(

ш

3.0

Ч ш

2.0

Ч

240)

Outdoor heat

exchanger

temperature

thermistor

RT68

Muffler

Max. Length
A

Max. Height

difference

B

Indoor
unit

Outdoor unit

MAX. REFRIGERANT PIPING LENGTH and MAX. HEIGHT DIFFERENCE

Model

Refrigerant piping : ft.

Piping size O.D : in.

Max. Length

A

Max. Height difference

B

Gas Liquid

MUZ-FD09NA
MUZ-FD12NA

65

40

3/8

1/4

ADDITIONAL REFRIGERANT CHARGE (R410A : oz.)

NOTE

: Refrigerant piping exceeding 25 ft. requires additional refrigerant charge according to the calculation.

Model

Outdoor unit precharged

Refrigerant piping length (one way) : ft.

25

30

40

50

60

65

MUZ-FD09NA
MUZ-FD12NA

2 lb. 9 oz.

0

1.62

4.86

8.10

11.34

12.96

Calculation : X oz. = 1.62 / 5 oz. / ft. × (Refrigerant piping length (ft.) - 25)

NOTE

: Refrigerant piping exceeding 25 ft. requires additional refrigerant charge according to the calculation.

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