Heating And Hot Water System Installation Connections - Maktek OMEGA LCD Installation And Service Manual

3.5 HEATING AND HOT WATER SYSTEM INSTALLATION CONNECTIONS

• At DHW function, please make sure that the pressure of the city water network on
cold water inlet side is not more than 6 Bars. If the network pressure is more than 6
Bars, a pressure regulator must be added. In order for the DHW system to run, the
minimum pressure level of the network must be 0,8 Bar.
• In order to provide a good circulation at heating function, installation pipe diameters
must be selected properly and diameter restrictions should not be allowed at elbow
passage. When selecting the pipe diameter, pipe resistance above the capacity of
the pump must be avoided. You can see the pump capacities from the pump
pressure curve.
• When there is a pressure increase at heating system, the security ventile operates in
order to discharge water to decrease pressure.
• When radiator thermostatic valves are installed in the heating system and when the
heat balance is provided at all isolated departments, if the thermostatic valves turns
off the system, automatic by-pass system immediately runs in order to provide the
minimum circulation in heat exchanger and provides the safety of device.
• Insulation : We recommend that all pipework is insulated where practical. Especially
the primary pipework within a boiler cupboard.This will reduce heat loss and protect
the cupboard from high temperatures.
CAUTION ! : During installation ; on the return water inlet pipe, usage of 3/4" particule
filter and 2 valves on both sides of the filter is advised. On the cold water inlet pipe 1/2"
particule filter and a valve must installed.
CAUTION ! : The primary circuit must be flushed to ensure that no debris is traped in
the system. Failure to do so may lead to boiler failure which will not be covered by
manufacturer's warranty. Where existing radiators and pipework is used, a power flush
must be carried out to remove debris.
• Central heating and domestic hot water pipe connections must be made according to
the boiler installation diagrams in this manual. Make sure to remove the plastic taps
before making the pipe connections. Inlets and outlets are clearly marked with blue
and red colors on the bottom of the boiler.
• The water hardness in the central heating installation should be 15-20fH (French
hardness). Hard and calcerized water will harm the boiler, calcer will accumulate on
the resistances in time causing them to fail. Breakdowns in boilers caused by
improper water in the system are not covered by warranty.
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