Table of Contents
SiEN34-705
Connection of gas and liquid pipes
2-1 Cutting the field supply gas pipes
• Cut the pipes according to Table 6.
• This table shows the case when the A dimensions shown in "1-2 Finished dimensions" is 284mm.
CAUTION
If the A dimensions exceed 284mm, see Table 6 and adjust the dimensions of the gas pipe 1 and
2 and 3.
• The L dimensions of the gas pipe 3 in Table 6 show those when the field supply elbows have B
dimension in Table 2 shown in BHFP22P151 Installation instruction, 2 connection of gas and
liquid pipes.
If the B dimensions are not the same with Table 2, see Table 2 and 6, and adjust them accordingly
Table 6
Gas pipe 1 (field supply) Gas pipe 2 (field supply) Gas pipe 3 (field supply)
Model type L(mm
8HP
51
10HP
57
12~18 HP
101
2-2 Connection of pipes
• Connect the gas and liquid pipes as shown in the figure at the right.
When connecting the pipes, first connect the gas-side joint and the gas-side reducer(1), the liquid-side joint
and the liquid-side reducer (1)
• See "1-2 Finished dimensions" for the location (height) of the joint.
• See the caution section in the installation manual attached to the outdoor unit for brazing pipes and
connecting pipes with flare nuts.
• Install the joint in such a way that the attached face of the caution label becomes horizontal (See the View A).
Liquid-side joint
Gas-side joint
Ground
View
Refer to the main pipe of
"Connecting Pipe Sizes and
location of cutting the joint" in "
BHFP22P151 Installation
instructions" when cutting.
Gas-side joint (1)
Liquid-side joint (1)
Refer to the main pipe of "Connecting Pipe Sizes and
location of cutting the joint" in " BHFP22P151 Installation
instructions" when cutting.
The work after the kit is connected
Connection of piping between the outdoor unit and the indoor unit
Air tight test
Insulation of joints
• See "The work after the kit is connected" for a front connection in "BHFP22P151 Installation Instructions."
General Information
L(mm)
L(mm)
69
282
75
252
119
218
Max.+ 15°
Max.+ 15°
(Attached to the outdoor unit)
Liquid-side accessory pipe (1)
(Attached to the outdoor unit)
Gas-side accessory pipe (1)
Gas pipe 1 (field supply)
(As per Table 6)
Liquid-side reducer (1)
Gas-side reducer (1)
Gas pipe (field supply)
(Select the pipe length on site)
Liquid pipe (field supply)
(Select the pipe length on site)
Gas-side joint (2)
Liquid-side joint (2)
Refer to the main pipe of "Connecting Pipe Sizes and
location of cutting the joint" in " BHFP22P151 Installation
instructions" when cutting.
Gas-side reducer (1)
Liquid-side reducer (1)
Gas pipe 2 (field supply)
(As per Table 6)
(Attached to the outdoor unit)
Gas-side accessory pipe (1)
(Attached to the outdoor unit)
Liquid-side accessory pipe (1)
Outdoor
unit A
Outdoor
unit B
Gas pipe (field supply)
(Select the pipe length on site)
Liquid pipe (field supply)
(Select the pipe length on site)
Elbow (field supply)
Follow the instructions in the installation manual included with the outdoor unit,
when performing installation work.
Gas pipe 3 (field supply)
(As per Table 6)
(Attached to the outdoor unit)
Gas-side accessory pipe (1)
(Attached to the outdoor unit)
Liquid-side accessory pipe (1)
Outdoor
unit C
Appendix
155
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