Black & Decker MUZ-FD12NA- U1, MUZ-FD09NA- U1 service manual Refrigerant System Diagram

6

REFRIGERANT SYSTEM DIAGRAM

MUZ-FD09NA

Unit:inch

MUZ-FD12NA

Refrigerant pipe ø3/8

4-way valve

(with heat insulator)

Muffler

Outdoor heat

exchanger

temperature

Stop valve

thermistor

(with service port)

Muffler

Outdoor

RT68

Flared connection

Discharge

Service

heat

temperature

exchanger

thermistor

port

RT62

Compressor

Ambient

Service

port

temperature

thermistor

Defrost

RT65

thermistor

RT61

Capillary tube

O.D. 0.118 × I.D. 0.071

× 23-5/8

(ø3.0 × ø1.8 × 600)

Strainer

Flared connection

Expansion

#100

Stop valve

valve

R.V. coil

(with strainer)

heating ON

Capillary tube

cooling OFF

Refrigerant pipe 1/4

O.D. 0.118 × I.D. 0.079

× 9-7/16

Refrigerant flow in cooling

(with heat insulator)

(ø3.0 × ø2.0 × 240)

Refrigerant flow in heating

MAX. REFRIGERANT PIPING LENGTH and MAX. HEIGHT DIFFERENCE

Model

Refrigerant piping : ft

Piping size O.D : in

Max. Length

Max. Height difference

Gas

Liquid

A

B

MUZ-FD09NA

65

40

3/8

1/4

MUZ-FD12NA

Indoor

unit

Max. Height

difference

B

Max. length

A

Outdoor unit

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	2 lb. 9 oz.	0	1.62	4.86	8.10	11.34	12.96
MUZ-FD12NA

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

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

8