Haier Smart Power Series Service Manual page 143

Smart Power
7.5.5 Preventing foreign objects from entering
Plug the pipe through-holes with putty or insulating material (procured locally) to stop up all gaps, as shown in the
figure.
If there is any possibility that small animals enter the system through the knock-out holes, plug the holes with
packing materials (field supplied) .
Insects or small animals entering the outdoor unit may cause a short circuit in the electrical box
Seal knock-out holes to avoid snow and humidity entering.
7.5.6 Preventing foreign objects from entering
• Be careful not to let the indoor and outdoor piping comeinto contact with the compressor terminal cover.If the
liquid-side piping insulation might come into contact with it, adjust the height as shown in the figure below.
Also, make sure the field piping does not touch the bolts or outer panels of the compressor.
• When the outdoor unit is installed above the indoor unit the following can occur:
The condensed water on the stop valve can move to the indoor unit. To avoid this, please cover the stop valve
with sealing material.
• If the temperature is higher than 30°C and the humidity is higher than RH 80％ , then thickness of the sealing
materials should be at least 20mm in order to avoid condensation on the surface of the sealing.
• Be sure to insulate the liquid and gas-side field piping.
Any exposed piping may cause condensation.
(The highest temperature that the gas-side piping can reach is around 120°C, so be sure to use insulating material
which is very resistant.)
No not touch piping and internal parts.
7.5.7 Cautions for necessity of a trap
To avoid the the risk of oil held inside the riser piping flowing back into the compressor when stopped and causing
liquid compression phenomenon, or cases of deterioration of oil return, it will be necessary to provide a trap at each
difference in height of 10m in the riser gas piping.
• A trap is not necessary when the outdoor unit is installed at higher position than the indoor unit.
1 Putty or insulating material (produced locally)
NOTICE
DANGER
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