KyungDong KDB-161GOM Installation Manual page 17

G O M - 영 문
Water Supply Construction
The contact diameter of the water supply pipes of this unit is 1/2" .
In the entrance of the water supply, install water supply middle valve.
To use this unit it' s always necessary to have more than 0.5 bar inlet pressure for the filling
of the installation and for domestic hot water production too.
When sending hot water to the second floor, more than 1.0 bar (1kgf/cm
is necessary.
In the region where the water pressure is low, please install a pressure pump on the water
supply pipe(except, when in use, please use a pump that is not affected by the capacity).
Before connecting the water supply pipe and the unit, open the water supply valve to
remove any excesses and sand from the pipes.
When the water pressure is over 10 bar (10kgf/cm
Hot Water Pipe Construction
The contact diameter of the hot water pipe of this unit is 1/2"
Hot water pipe should be as short as possible.
Water supply and hot water pipe should all be insulated.
Please do not use allophone metals if possible and avoid any complex pipes.
Please maintain at least 1/200~1/300 upward incline for proper drainage.
Please connect the pipes in a way to avoid any collection of air inside the pipes.
Heating Pipe Construction
The contact diameter of the heating pipes of this unit is 3/4˝ .
The diameters of the supply pipe and the circulation pipe should be the same.
The pipe length should be as short as possible and any curvature or connections should
be minimized.
Connect a hose to the overflow hose connection hole to drain the water to the sewage.
When connecting to the radiator, please install manual or automatic air vent on the top of
the radiator to prevent any collection of air or steam inside.
In case of any renovation/repair installation of the boilers, please clean the pipes before
connecting the unit to the pipe.
For freezing guard, the exposed pipes must be insulated with insulation material.
For distributor, less than 5 holes must be over 36 mm and more than 6 holes must use
over 44mm of diameters.
2
) install a pressure reducer valve.
47
2
) water pressure