11
Installation Procedures
Pipe Length & Height Difference
Tubing Materials & Specifications
Refrigerant Recharge Amount
Connecting Procedures of Refrigerant Tubing
Cutting and Enlarging
Checkup for Air Leakage
Vacuumizing
Connecting
Open All Valves
Please refer to the attached manual
of outdoor units.
Special tools for R410A should be
used for cutting and enlarging pipes.
Model
Tubing
Size(mm)
Gas pipe
Ø9.52
Ø12.7
Ø15.88
Liquid pipe
Ø6.35
Ø6.35
Ø9.52
Tubing
Material
Phosphor deoxybronze seamless pipe (TP
2
)
for air conditioner
Add the refrigerant according to the installation instruction of outdoor unit. The addition of
R410A refrigerant must be performed with a measure gage to ensure the specified amount while
compressor failure can be caused by filling too much or little refrigerant.
With the soft solder, the nitrogen-filling protection should be used.
Cutting or enlarging pipes should be proceeded by installation personnel according to the
operating criterion if the tube is too long or flare opening is broken.
Vacuumize from the stop valve of outdoor units with vacuum pump. Refrigerant sealed in
indoor machine is not allowed to use for vacuumization.
Vacuum pump with check valve should be used for vacuumizing to prevent pump oil flowing
into the machine.
Open all the valves of outdoor units. [NB: oil balancing stop valve must be shut up completely
when only connected one main unit.]
Check if there is any leakage at the connecting part and bonnet with hydrophone or soapsuds.
1. Connecting circular terminals:
The connecting method of circular terminal is shown in the Fig. Take off the screw, connect it
to the terminal tier after heading it through the ring at the end of the lead and then tighten it.
2.Connecting straight terminals:
The connection methods for the circular terminals are shown as follows: loosen the screw
before putting the line terminal into the terminal tier, tighten the screw and confirm it has been
clamped by pulling the line gently.
3.Pressing connecting line
After connecting line is completed, press the
connecting line with clips which should press
on the protective sleeve of the connecting line.
correct
pressing
pressing clip
terminal tier
wrong
pressing
AW-DDV009/
007-N11
AW-DDV012-
018-N11
AW-DDV024
-N11
Summary of Contents for AW-DDV007-N11
Page 4: ...1 Parts and Functions...
