Haier AB052MCERA Manuel D'instructions page 24

Installation Procedures
Tubing Permissible Length & Height Difference
Please refer to the attached manual of outdoor units.
Tubing Materials & Specifications
Model
Tubing Size (mm)
Tubing Material
Refrigerant Filling Amount
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.
Connecting Procedures of Refrigerant Tubing
Proceed the flare tube connecting operation to connect all the refrigerant tubes.
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.
Vacuumizing
Vacuumize from the stop valve of outdoor units
with vacuum pump. Refrigerant sealed in indoor
machine is not allowed to use for vacuumization.
Open All Valves
Open all the valves of outdoor units. [NB: oil
balancing stop valve must be shut up completely
when connected one main unit.]
Checkup for Air Leakage
Check if there is any leakage at the connecting
part and bonnet with hydrophone or soapsuds.
AB052~092
Gas pipe
Liquid pipe
Phosphor deoxybronze seamless pipe (TP 2 ) for air conditioner
AB122~182
9.52
6.35
Outer
Diameter of
Tubing (mm)
11.8(1.2kgf-m)
6.35
24.5(2.5kgf-m)
9.52
49.0(5.0kgf-m)
12.70
15.88 78.4(8.0kgf-m)
Connecting
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
16
AB242~482
12.7
6.35
Mounting
Increase mounting
Torque (N-m)
Torque (N-m)
13.7(1.4kgf-m)
29.4(3.0kgf-m)
53.9(5.5kgf-m)
98.0(10.0kgf-m)
Connecting
circular terminals:
terminal tier
pressing clip
15.88
9.52
wrong
pressing