Cassette Type FCU
10
(2) Connection between the front panel and the main unit should be correct, as shown in the gure below.
At panelAt body
2.6 Installation of Inlet and Outlet Pipes
(1) Both the torque wrench and ordinary wrench should be used for installing and uninstalling the water
pipes, as shown in the gure below.
(2) The inlet and outlet pipes both are G3/4 threaded. Before connection, wrap the thread for 2-3 cycles
with the Teon tape for better sealing.
(3) After the inlet and outlet pipes have been connected, start the water pump to check if they leak or not.
Then, expel air inside the pipe system through the exhaust valve and insulate it properly as shown in
the gure below.
(4) Wrap the connectors with sponge and do insulation to the exhaust valve.
Pipe tongs
Wrench
Connector
Screw
Tier
Inlet pipe
Outlet pipe
Insulation sleeve
Sponge
Tier
Insulation sleeve
2.7 Installation of the Drain Pipe
2.7.1 Precautions for the Drain Pipe
(1) The drain pipe should be as short as possible, with at least an inclination degree of 1%~2%, so that
the condensate can be drained out smoothly. If the inclination degree fails to meet this requirement, a
raising pipe is required.
(2) The drain hose should be sized equal or larger than the drain pipe.
(3) The drain pipe should be installed in accordance with the gure below and also insulated properly.
Incorrect installation and insulation would lead to generation of condensate or water drop which would
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