Installation And Water Flood - Maktek MKK Series Installation Use And Maintainence Manual

4.1 INSTALLATION AND WATER FLOOD

Please use open expansion tank for our boilers. Closed expansion tank systems may trigger
steaming of the boiler when there is an electric cut out or when the pump is not functioning.
Please connect open expansion tanks according to standarts.
No valve or similar materials must be installed on safety return or flow line of the open
expansion tank.
In order to increase safety if the pump does not function,a by pass line must be secured between
inlet and outlet spot of circulation pump as show in installation schema. The valve on by pass line
should be kept closed during normal functioning . ıf there is an electricity cut and a risk of
overheating appears, the valve must be open and the evacuation of hot water must be provided
by natural circulation. The diameter of the pipe to be used at by pass line should be the same
diameter size with the pipe used in installation at minimum.
As an extra security measure, an infinite power source may be used for electricty cut.
Please mount 3 bar security valve on the boiler for safety against over pressure in open
expansion systems.
We suggest the mounting of the pump on return line in order to protect from over heating
(steam).
All connections and valve positions must be checked after the installation of the boiler is
complete.
Operations like water flooding or evacuation must be done while the boiler is not working
and cold.
Please flood water to the system until water comes out of warning pipe. Please close the
valves when the filling is complete.
Please purge air in the system where necessary. Avoid any installation that might block air in the
system, if any doubt, please use automatic purger.