Refrigerant Piping Works - Samsung MCU-Y6NEE Installation Manual

Refrigerant piping works

For installation of the refrigerant pipes, please refer to corresponding outdoor unit installation manual.

Since R410a has a high working pressure, only use the regulated refrigerant pipe and follow proper installation method.

Finish the gas pipe and the liquid pipe works with the insulation base. If the insulation work isn't done properly,

condensation water may flow indoor and part of the ceiling can be damaged by heat.
In brazing the pipe, please follow the prescribed brazing method. (Please refer to outdoor unit installation manual)

Refrigerant pipe installation
Method
Using MCU
only
Using Y- joint
and MCU
Items
Piping
(Equivalent
piping)
Max.
Outdoor ~
piping
Total
Outdoor unit
length
piping
Piping
Equivalent
piping
Outdoor ~
Piping
Indoor unit
Indoor ~
Piping
Level
Indoor unit
difference
Outdoor ~
Piping
Outdoor unit
MCU~MCU Piping
Allowable
The first branch ~
length
Piping
the farthest
after
Indoor unit
branch
*1) As an outdoor unit is located in a lower position than indoor unit, level difference is 40m.
Branch with Y-joint
Using MCU only
200m below
(220m below)
Using Y-joint and MCU
Using MCU only
1000m below
Using Y-joint and MCU
10 m below r ≤ 10, s ≤ 10, t ≤ 10 m
13 m below r ≤ 13, s ≤ 13, t ≤ 13 m
50 m / 40 m H1 ≤ 50/40 m
*1)
15m below H2 ≤ 15 m
5m below H3 ≤ 5 m
15m below H4 ≤ 15 m
Using MCU only
45 m below
Using Y-joint and MCU
Examples
a+b+c+d+e+f+g ≤ 200 m (220m)
a+g+m ≤ 200 m (220 m)
a+b+c+d+e+f+g ≤ 1000 m
a+b+c+d+e+f+g+p+h+i+j+k+m+n
≤ 1000 m
45 m
g+m ≤ 45 m
Remarks
Equivalent pipe
length.
Y joint : 0.5m,
Header : 1m,
MCU : 1m
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