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10
Drain Test
Test the drainpipe to conrm that there are no leaks or other issues with the drainpipe.
3.9in(100
mm) below
lifting 14in
(360mm) below
lifting 23.6in
( 600mm )below
under the ceiling
• After system is fully installed and power is applied, turn on cooling operation and
add water to check for drainage.
• Conrm sound from the motor of the drainage pump and check for proper drainage.
joint of drainpipe
Installation Procedures
Tubing Permissible Length & Height Difference
Please refer to the Haier MRV selection software.
Additional Refrigerant Charge
Add refrigerant according to the installation manual of outdoor unit. The addition of R410A refrigerant must be performed
with a digital scale to ensure the specied amount is added. Not following this can potentially cause efciency issues or
compressor failure.
Tubing Materials & Specications
Please refer to the manual of the outdoor unit.
Model MVAB009~018MV2AA
Tubing Size in
(mm)
Gas pipe Ø1/2"(Ø12.7)
Liquid pipe Ø1/4"(Ø6.35)
Tubing Material R-410a rated copper tubing
Connecting Procedures of Refrigerant Tubing
Connect all the refrigerant tubes via are connections.
• Dual wrenches must be used in the connection of indoor
unit tubing.
• For tightening torque refer to the right table.
Outer Diameter of
Tubing in (mm)
Mounting Torque
lb-in(N-m)
Flare Torque Spec
ft-lb (N-m)
Ø1/4"(Ø6.35) 104.4(11.8) 13 (18)
Ø3/8"(Ø9.52) 216.8(24.5) 30 (40)
Ø1/2"(Ø12.7) 443.7(49.0) 43 (59)
wrench
Cutting and Enlarging
• Cut the tube to the needed length.
• Ream the cut to remove shoulder. Do this with the tube
facing down to help llings fall out.
• Add supplied are nut to tube.
• Use 45° are tool to create are.
1. Connecting using circular crimp terminals:
The method of using circular terminal is shown in the gure. Take off the screw, connect it to the
terminal after placing it through the ring at the end of the lead and tighten it down.
2. Connecting using straight terminals:
The method of using straight terminals is shown as follows: loosen the screw before putting the wire into the terminal
block, tighten the screw and conrm it has been tightened by pulling the line gently.
3. Clamp the wires:
Secure the wires with clips which should press on the insulation of the wires.
Wire Connections
Connecting
circular
terminals:
correct
pressing
wrong
pressing
terminal tier
pressing clip
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