Specifications

23
Installation & Maintenance Manual
4. Completed connection of indoor and outdoor units and test run
4-1 flared joint
The flared joint is located on the indoor and outdoor sides.
Remove the valve cap of outdoor unit, and then connect the pipelines.
As shown in Figure below, coolant pipeline is used to connect indoor unit and
outdoor unit.
Connector
Refrigerant pipeline
Access door
Indoor unit
Outdoor unit
Liquid pipe
Refrigerant adjustment... If pipeline length is over 7m, auxiliary refrigerant (R22) is required.
(7m pipeline for outdoor unit is filled with refrigerant)
Pipeline length
Maximum length 7m
Longer than 7m
Requiring no refrigerant replenishment
Requiring refrigerant
replenishment
50g/m
Pipeline preparation
Fitting pipes of 3m or 4m are available.
Pipeline specifications listed in table below:
It is required to properly insulate the 2 pcs of refrigerant pipeline so as to avoid condensation.
Bending radius of refrigerant pipeline must be greater than 100mm.
Pipeline
For liquid
For gas
Outer diameter
Mm
Inch
6.35 1/4
Insulation thickness
6mm
Specific gravity of insulating
plastic foam is 0.045
9.52 3/8
12.7 1/2
6mm
6mm
Insulating material
Precautions:
Cautiously select the specified insulation thickness. Excessive thickness may disturb the cumulation
at back side of indoor unit while insufficient thickness may lead to condensed water dripping.
Gas pipe
5K/7K/9k
10
15
9.52
12.7
6.35
6.35
15
Model
Gas pipe
Max length
of extended
fitting pipe (m)
Outer diameter of fitting pipe:(mm)
Liquid pipe
12k
18k
15
15.8
9.52
21k
6.35
12.7
5
5
5
Max Height
difference (m)
5
Max number
of bent pipes
10 spots
10 spots
10 spots
10 spots
9.52 3/8
6mm
15.88 5/8
6mm
VI. Installation instructions
15
15.8
9.52
24k
5
10 spots