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Friedrich MR12Y3H User Manual

Page 5

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4

R E F R I G E R A N T

S Y S T E M D I A G R A M

2-Way valve

Strainer

Strainer

3-Way valve

Muffler

4-Way valve

Expansion valve

Refrigerant direction

Heat exchanger
(indoor unit)

Heat exchanger
(outdoor unit)

Compressor

Cooling flow
Heating flow

Refrigerant pipe diameter
Liquid : 1/4" (6.35 mm)
Gas : 3/8" (9.52 mm)

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