Tubing Material
Model
Tubing Size (mm)
Gas pipe
Liquid pipe
9.52
24
Installation Procedures
Connecting
circular terminals:
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.
Proceed the flare tube connecting operation to connect all the refrigerant tubes.
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 or compressor
failure can be caused by filling too much or little refrigerant.
Tubing Materials & Specifications
15.88
DBV018
Phosphor deoxybronze seamless pipe (TP
2
) for air conditioner
Refrigerant Filling Amount
Connecting Procedures of Refrigerant Tubing
Outer Diameter of Tubing (mm) Mounting Torque
78.4~98.0N.m
9.52
32.7~39.9N.m
15.88
19.05
97.2~118.6N.m
Dual wrenches must be used in the connection of indoor unit tubing.
Mounting torque refers to the right table
wrench
Cutting and Enlarging
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.
Check if there is any leakage at the
connecting part and bonnet with hydrophone
or soapsuds.
Checkup for Air Leakage
Open all the valves of outdoor units. [NB: oil
balancing stop valve must be shut up
completely when connected one main unit.]
Open All Valves
Vacuumize from the stop valve of outdoor
units with vacuum pump. Refrigerant sealed
in indoor machine is not allowed to use for
vacuumization.
Vacuumizing
Connecting
correct
pressing
terminal tier
pressing clip
wrong
pressing
6.35
12.7
DBV024, DBV028, DBV038
6.35
11.8~13.7N.m
12.7
49.0~53.9N.m
Summary of Contents for AWSI-DBV018-N11
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