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Service Manual 79

Maximum Length of Pipe and Extra Charge of Refrigerant Charge

Installation

It does not matter which unit is higher.

Standard Length

A,B,C,D A B C D

A2UW146FA0/1/2

A2UW166FA0/1

A2UW186FA0

A3UW186FA0/1

7.5m 25m 25m - - 40m(A+B)

7.5m 20m 20m - - 30m(A+B)

A3UW246FA0

A4UW246FA0

7.5m 25m 25m 25m - 50m(A+B+C)

A4UW306FA0

7.5m 25m 25m 25m 25m 70m(A+B+C+D)

Max piping length each indoor unit

Model

[Outdoor Unit]

Max total piping length

1.1 The maximun allowable level and piping length

15m

7.5m

[Outdoor Unit]

[Indoor Unit]

1. TPS Inverter Multi -Multi Piping Type

Indoor Unit Capacity Pipe Size Rated Max Additional

(Btu/h)

Gas Liquid

Length Length Refrigerant

7k, 9k, 12k 3/8"(9.52mm) 1/4"(6.35mm) 7.5m 25m 25g/m

18k, 24k 1/2"(12.7mm) 1/4"(6.35mm) 7.5m 25m 35g/m

1.2 Refrigerant Charge

❈ Extra refrigerant = (Extended length - Rated length) x Additional refrigerant

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