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Connecting Method
Installing the Y-joint
Install the Y-joint 'horizontally' or 'vertically' .
<Install horizontally>
<Using reducer>
<Install vertically>
10~15mm
or more
Keep a minimum distance of 500mm or more before
connecting a branch joint.
<Insertion depth of the connecting pipe>
Basic specification
When cutting the connection part
Connecting pipe
Connecting pipe
Do not insert the pipe deeply into the Y-joint.
( Do not insert more than 70mm.)
Installing the Header joint
1. Select the reducer fitted on the diameter of the pipe.
Brazed part
Provided
Reducer
Pipe
Pipe
To indoor unit
To outdoor unit
<Liquid side>
2. Block the reducer that is not used by brazing the cap if the number of connected indoor
unit is fewer than header joint holes.
Brazed part
Provided
In order
Blocked the hole of
<Liquid side>
header joint
Note
Connect the header joint to the pipe by cutting the provided reducer properly.
Connect the header joint in order respecting the number of the indoor unit.
Connet the indoor unit as the highest capacity comes first.
3. Install the header joint horizontally.
Reducer Header joint
The
horizon
Pipe
The
horizon
±15°
or less
<Liquid side>
Installing the Outdoor joint
Use the attached reducer according to the selected pipe size.
To other outdoor unit
Pipe
To other outdoor joint or outdoor unit
Reducer
Reducer
Pipe
To other outdoor joint or Y-joint of the main pipe
<Liquid side>
- Use connection part of Y-joint or provided
reducer by cutting them in accordance with
diameter of connecting pipe.
- Make certain 10~15mm or more for reducer
which connected with pipe.
- Remove burr on cut part of reducer.
It is impossible to connect reducer with pipe,
if pipe is deformed or reducer is untrimmed.
To other branch
Rear
joints or indoor unit
Pipe
Reducer
Reducer
Rear
Pipe
Front
To outdoor unit
Main pipe
Maintain ±15° on
the horizon
Install the Y-joint within ±15° on
the horizon or on the vertical.
Pipe
To indoor unit
To outdoor unit
<Gas side>
In order
Blocked the hole of
header joint
<Gas side>
10~15mm
or more
The horizon
±10°
or less
The horizon
The horizon
The horizon
<Gas side>
To other outdoor unit
Pipe
Reducer
Reducer
Pipe
To other outdoor joint or Y-joint of the main pipe
To other outdoor unit
Pipe
Reducer
Reducer
Pipe
To other outdoor joint or Y-joint of the main pipe
500mm
Note
Connect the Outdoor joint to the pipe by cutting the outlet of the Outdoor joint or provided reducer properly.
or more
Reducer
Installation of outdoor joints
Pipe
Gas pipe
Liquid pipe
High pressure gas pipe only applies to the HR product.
Insulating the branch joint
Y-joint & liquid side & gas side of the outdoor unit
Attach the insulation provided with a branch joint to the insulation supplied in the field
without a gap. Wrap the connected part with an insulation (Field supply) of a thickness of at
least 10mm.
Use an insulation with the heat resisting temperature over 120°C.
Wrap the branch joint with an insulation of a thickness of at least 10mm.
When insulating in high humidity(higher than 30°C, 80%), wrap the supplied insulation with
more than 10mm of extra insulation such as Polyethylene Foam or other similar material.
Wrap the connected part between the Outdoor joint and the gas side of the outdoor unit to
prevent it from defrosting. Wrap gas side pipe of the outdoor unit wholly to prevent it from
dewing.
±15°
or less
Pipe insulation
(Field supply)
Fix securely without any gap.
Provided
Pipe insulation
±10°
Fix securely
or less
without any gap.
150mm
Branch
joint
A thickness of the insulation (Field supply)
should be at least 10mm.
Header joint
Cover the connected part and fasten the header joint using a cable tie.
Insulate the header joint and the brazed part and wrap the connected
part with an adhesive insulation tape to prevent it from dewing.
Adhesive insulation tape
Insulating
Insulating the pipe
header joint
Use the attached reducer according to the selected pipe size.
To other outdoor joint or outdoor unit
<Gas side>
Use the attached reducer according to the selected pipe size.
To other outdoor joint or outdoor unit
<High pressure gas side>
High pressure
Do not install the outdoor
gas pipe
joint in this direction.
Attach the adhesive insulation tape to the pipe
as shown in the picture after insulating the pipe.
Insulation tape
(Field supply)
(Field supply)
Pipe
Pipe insulation
(Field supply)
Pipe insulation
(Field supply)
Insulating after brazing the cap
Adhesive insulation tape
10~15mm or more
Insulator
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