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10.6 Heat Insulation Treatment for Gas-Liquid Piping Connections for the Indoor Unit
•
The heat insulation treatment is carried out on the piping at the gas and liquid sides of the indoor unit
respectively.
(a) The piping on the gas side must use heat insulation material that can withstand temperatures of 120°C
and more.
(b) For the piping connections of the indoor unit, use the insulation casing for copper pipes (accessory) to
carry out the insulation treatment, and close all gaps.
10.7 Vacuum
Create a vacuum in the system according to the instructions in the installation manual of the outdoor unit.
For the vacuum, make sure that the cut-off valves of the outdoor unit are all closed (maintain the
factory status).
CAUTION
10.8 Refrigerant
Charge the system with refrigerant according to the instructions in the installation manual of the outdoor unit.
11. CONDENSATE WATER DISCHARGE PIPING INSTALLATION
11.1 Condensate water Discharge Piping Installation for Indoor Unit
1.
Use PVC pipes for the water discharge pipes. Based on the installation scenario, users can purchase the
appropriate piping length from a sales agent, local after-sales service centre, or local market. The piping
length should be at least the same length as the body of the unit.
2.
Insert the water discharge pipe into the end of the water suction connecting pipe of the unit body, and use
the ring clamp (accessory) to clamp the water discharge pipes with the insulation casing for the water outlet
piping securely.
3.
Use the insulation casing for water discharge piping (accessory) to bundle the water suction and discharge
pipes of the indoor unit (especially the indoor portion), and use the tie for the water discharge piping (accessory)
to bind them firmly to make sure air does not enter and condense.
4.
In order to prevent the back-flow of water into the interior of the air conditioner when the operation stops, the
water discharge pipe should slope downwards towards the outside (drainage side) at a slope of more than
1/100. Make sure that the water discharge pipe does not swell or store water; otherwise, it will cause strange
noises. See Figure 17.
Rinnai
Unit
Attached insulation
body
heat pump belt
Figure 16.
0.8 ~ 1.0 m
a
> 1.0 m
b
Figure 17.
23
Face upwards
On-site piping side
Slope of 1/100 or more
Ducted Reverse Cycle Inverter Installation Manual (Indoor)
INSTALLATION INDOOR
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