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Drain Test
The air conditioner uses a drain up motor to drain water. Use the following procedure to test the drain up motor operation.
• Connect the main drain pipe to exterior and leave it provisionally until the test comes to an end.
• Feed water to the flexible drain hose and check the piping for leakage.
• Be sure to check the drain up motor for normal operating and noise when electric wiring is complete.
• When the test is completed, connect the flexible drain hose to the drain port.
10.4.6. Heat insulation
1. Use the heat insulation material for the refrigerant piping which has an excellent heat-resistance (over 120°C).
Heat insulation material: Polyethylene foam with thickness more than 8mm (local supply).
Caution
Be sure to perform heat insulation on the drain, liquid and gas piping. Imperfection in heat insulation work leads to water leakage.
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