Refrigerant pipe(the unit with the twins function), Indoor unit, 3 size of joint pipes for outdoor unit – Pridiom Concealed Duct Installation Manual User Manual

Page 18: 2 size of joint pipes for indoor unit

installation manual

2. Place The Pipe

Drill a hole in the wall (suitable just for the size of the wall

sleeve), then set on the fittings such as the wall sleeve and its

cover.

Bind the connecting pipe and the cables together tightly with

binding tapes.

Pass the bound connecting pipe through the wall sleeve from

outside. Make sure of the pipe allocation not to damage the

copper tubes.

Connect the pipes.

Expel the air with a vacuum pump or refrigerant.

Open the service valves of the outdoor unit .

Check the refrigerant leakage. Check all the joints

with the leak detector or soap water.

Cover the joints of the connecting pipe with the

insulation foam, and bind them well with the tapes to

prevent potential leakage.

8.1 Length and drop height permitted of the

refrigerant piping

8. REFRIGERANT PIPE(the unit with the

twins function)

Note: Reduced length of the branching tube is the 0.5m/1.64ft

of the equivalent length of the pipe.

Table.8-1

Permitted value

Piping

Total pipe length (Actual)

Indoor unit to indoor unit drop height

(farthest from the line

pipe branch)

(farthest from the line

pipe branch)

Pipe length

Drop height

Indoor unit-outdoor unit

drop height

30m/98.42ft

18K+18K

24K+24K/

30K+30K 50m/164.04ft

15m/49.21ft

10m/32.8ft

20m/65.8ft

0.5m/1.64ft

L+L1+L2

L1,L2

L1-L2

Fig.8-1

Outdoor unit

The line branch pipe

Drop height between indoor

unit and outdoor unit H≤20m/65.8ft

Indoor unit to intdoor unit

drop height H≤0.5m/1.64ft

Indoor unit

Note: All used branch pipe must be produced by Midea,

otherweise it causes malfunction. The indoor units should

be installed equivalently at the both side of the U type branch

pipe.

8.3 Size of joint pipes for outdoor unit

Model

Gas side

Liquid side

Φ15.9/0.626in

Φ9.5/0.375in

the size of main pipe(mm)

36K

48K

60K

Size of joint pipes for 410A outdoor unit

Table.8-3

Base on the following tables, select the diameters of the

outdoor unit connective pipes. In case of the main

accessory pipe large than the main pipe, take the large one

for the selection.

The 1st branching pipe

8.2 Size of joint pipes for indoor unit

Gas side

Capacity of

indoor unit

(A)

Size of main pipe(mm)

Liquid side

Φ12.7/0.5in

Φ15.9/0.626in

Φ6.35/0.25in

Φ9.5/0.375in

18K

24K

30K

Size of joint pipes for 410A indoor unit

Table.8-2

CE-FQZHN-01C

Available

branching pipe