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(2) Install shut-off valves
A shut-off valve and a shut-off valve with filter are
provided with the unit. For convenience of repair and
maintenance, install the shut-off valve with filter on water
inlet pipe and the shut-off valve on water outlet pipe of
indoor unit as follow.
Gaskets
The shut-off valve can connect to the water inlet of indoor unit
directly. The shut-off valve with filter must be installed at water inlet
of indoor unit, and water flow direction and installation direction must
be confirmed as shown below. The gasket in accessories can be
installed at the two connections of shut-off valve and shut-off valve
with filter.
●
Rubber gasket must be mounted (factory supplied), otherwise
water leakage may be caused.
●
Note the location of shut-off valves, and the direction of shut-off
valves and drain valve, which are essential to maintenance.
●
Screw up shut-off valves by using two wrenches.
Gas
13
(3) Additional water strainer
●
Provide a 50 mesh or more water strainer at the water inlet
side of water piping. Otherwise, damage to the plate heat
exchanger may occur. In the plate heat exchanger, water flows
through a narrow space between the plates. Therefore, there
is a possibility that freezing or corrosion may occur if foreign
particles or dust clog the flow of water between the plates.
●
This is not required when cooling mode is not used.
(50 mesh or more recommended)
Water Flow Direction →
●
The water piping connection needs to be completed after
flushing the water system.
Maintenance: Check the water pressure at least once every
●
2 weeks. If the pressure is lower than the minimum allowable
pressure, stop the system and inform the dealer to clean the
water strainer.
PIPING WORK
Water Strainer
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