Mitsubishi Electric CITY MULTI PUHY-HP-TNU-A Série Manuel D'installation page 29

<Refrigerant piping connection examples>
・Obtain joints and elbows on site as necessary according to the pipe diameter, and connect the pipes as shown in
the figures below.
(1) When routing the pipes through the front of the unit
Ⓓ
(2) When routing the pipes through the bottom of the unit
Ⓑ
<A> Liquid side
<B> Gas side
Ⓐ
Refrigerant service valve piping
Ⓑ Reducer etc.
Ⓒ Elbow
Ⓓ On-site piping
<Reference> Size of refrigerant pipes
HP72 *1
*2
HP96
*2 *4
*2
HP120
*1 *3 *5
*1 Expand the on-site piping and connect to the refrigerant service valve piping.
*2 Use the pipe joint (not supplied) and connect to the refrigerant service valve piping.
*3 When the unit is used in combination with other outdoor units
*4 When the piping length from the outdoor unit to the farthest indoor unit is 90 m (295 ft) or more
*5 When the piping length from the outdoor unit to the farthest indoor unit is 40 m (131 ft) or more
・When expanding the on-site piping, satisfy the minimum insertion depth requirement as follows.
Pipe size [mm (in)]
ø5 (ø1/4) or more, less than ø8 (ø3/8)
ø8 (ø3/8) or more, less than ø12 (ø1/2)
ø12 (ø1/2) or more, less than ø16 (ø11/16)
ø16 (ø11/16) or more, less than ø25 (ø1)
ø25 (ø1) or more, less than ø35 (ø1-7/16)
<A>
<B>
Ⓑ Ⓐ
<A>
<B>
Ⓓ Ⓒ Ⓐ
On-site piping [mm (in)]
Liquid
ø9.52 (ø3/8)
Brazed
ø9.52 (ø3/8)
*2
Brazed
ø12.7 (ø1/2)
Brazed
ø9.52 (ø3/8)
Brazed
ø28.58 (ø1-1/8)
*1
ø12.7 (ø1/2)
Brazed
Minimum insertion depth [mm (in)]
Service valve piping [mm (in)]
Gas Liquid
ø22.2 (ø7/8)
Brazed
ø12.7 (ø1/2)
Brazed
6 (1/4)
7 (5/16)
8 (3/8)
10 (7/16)
12 (1/2)
Gas
ø28.58 (ø1-1/8)