SiEN34-705
Appendix
General Information
147
BHFP22P100 Installation Instructions
There are some restrictions on the interconnecting piping between the outdoor units. See the installation attached to the outdoor units
and make sure to carry out proper piping. If the piping restrictions are not observed, it may result in malfunction of the unit.
Connecting pipe sizes and location of cutting the joint
•
When upsizing the main pipe, use the gas side reducer (2)
•
If the pipe size of ø19.1 or larger is used, the 0 material may be insufficient to withstand the specified pressure.
Therfore, make sure to use the 1/2H material with thickness of 1.0mm or more. When using the O material for the
pipe size of ø19.1, a thickness of 1.2 or more is required. In this case, the connection must be brazed.
Select cutting point of a joint or a reducer which is suitable for the size of the interconnecting pipes determined according to the table below and cut it with a pipe cutter.
Outdoor unit A
Outdoor unit B
•
Select the pipe size according to the total capacity of outdoor unit.
Pipe between the Outdoor unit
Multi Connection Piping kit
and the outdoor unit
Outdoor unit
capacity type
Pipe size (O.D. x min. thickness [temper grade]
Outdoor unit total
capacity type
Pipe size (O.D. x min. thickness [temper grade]
Gas pipe
Liquid pipe
Follow “Restrictions on installing Multi Connection Piping Kit”
Outdoor Unit Multi Connection Piping Kit
Caution
Cutting procedure
•
Use pipe cutter for cutting
Pipe cutter
Joint of Reducer
Cut near the center of
the connection area
Connection pipe
Connection
area
Procedure for Front Connection
Installation examples
1-1 Exterior view
Main pipe
Outdoor unit A
Outdoor unit B
1-2 Finished dimensions
•
For installations where the A dimensions exceed 290mm, extend the field supply interconnecting pipe
between the joint and the outdoor unit.
Liquid-side reducer (1)
Gas-side reducer (1)
Liquid-side joint
Gas-side joint
Gas pipe 1
(field supply)
Liquid pipe (field supply)
Gas pipe (field supply)
Elbow (field supply)
Gas pipe (field supply)
To indoor unit
A : 290 mm (standard installation)
<Top>
<Front>
Bottom frame
Gas pipe
Liquid pipe
(units: mm)
Gas pipe
Liquid pipe
