Haier AV10IMWEWA Design, Installation & Maintenance Instruction page 224

Manifold pipe
Manifold pipe selection:
Outdoor unit type
The closest outdoor unit to the 1st manifold pipe will be the master unit.
Note:
1. When connecting the outdoor branch pipe and the outdoor, please pay attention to the outdoor pipe dimension.
2. When adjusting the diameter among outdoor branch pipes and among the units, please do execute at the branch
pipe side.
3. Please install the outdoor branch pipe (gas/liquid side) in horizontal or vertical direction.
4. When welding with hard solder, please do blow nitrogen. If not, a number of oxides will be produced and cause
heavy damage. Besides, to prevent water and dust going into the pipe, please make the brim as outer roll.
Adhesive side
Cut off pipe with the cutter
Cut off at the middle
Pipe installation
When doing the piping connection, please do the following:
• Please don't let the pipe and the parts in the unit collide each other.
• When connecting the pipes, close the valves fully.
• Protect the pipe end against water and impurity going into the pipes (Weld after being flatted or sealed with
adhesive tape).
• Bend the pipe as large semi-diameter as possible (over 4 times of the pipe diameter).
• The connection between outdoor liquid pipe and the distributing pipe is flared type. Please expand the pipe with
the special tool for R-410A after installing the flared nut. But if the projecting pipe length has been adjusted with
the copper pipe gauge, you can use the original tool to expand the pipe.
• Since the unit is charged with R-410A, the expanding oil must be ester oil, not the mineral oil.
Total indoor capacity(100W)
Less than 335
More than 335, less than 506
More than 506, less than 730
More than 730
Prepare on site
Seal the connection and wrap the
heat insulator with adhesive tape
Horizontal
Floor
Right
223
Model(optional)
FQG-B335A
FQG-B506A
FQG-B730A
FQG-B1350A
Floor
Wrong