R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12
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5.4 Leak Detection
Use soap water or a leak detector to check whether gas leakage exists at the adapters.
5.5 Heat Insulation
Use heat insulation materials to wrap the part protruding outside the flared pipe joint and the refrigerant pipe
of the liquid pipe and the gas pipe, and ensure that no gap exists between them.
Imperfect heat insulation may lead to condensate drips.
6. Installation of Drain Pipe
6.1 Install the drain pipe of the indoor unit
In order to prevent drain overflow, install a drainage controller at place 1 of the drain pipe. (The drainage
controller is designed to smoothen the drainage when the static pressure outside the unit is high, especially
at the air inlet, in addition to remove stink through the drain pipe.)
The drain of water is natural. In the construction, the external pipe of the outdoor unit slants downward at a
gradient of 1/50~1/100.
The number of bends and folds of the drain pipe should not exceed 2. Try to avoid bends in order to prevent
trash accumulation.
In the construction, do not drop trash into the drip tray or drain pipe of the indoor unit.
Upon completion of installing the drain pipe, remove the inspection panel. Put water into the drip tray to
check whether the water can be drained levelly and steadily.
Fig-34
NOTE:
Drain pipe trash gains easily at the drainage controller. Be sure to install a stopper and a structure that cleans up trash easily.
6.2. Trial draining of the drain pipe
Open the side panels of the indoor unit, fill water inward, and check whether the water can be drained smoothly.
Check water leak at the joint.
6.3. Heat insulation of drain pipe
After making sure that the water drains smoothly and no water is leaked, use adiabatic wool bushes to
preserve heat of the drain pipe. Otherwise, condensate will occur.
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