flamco Duo Instrucciones De Instalación Y Funcionamiento página 7

3. Installing and operating the water heater
Read these instructions carefully before commencing installation. For any additional questions,
please consult our customer service department (see contact details).
Installation, commissioning and maintenance must be carried out by specialists as per the
applicable regulations (including EN 1717, DIN 1988, EN 12828 and VDI 2035 regulations for local
distributors, country specifi c rules and regulations) in a frost free area, on a surface capable of
holding the fully fi lled water heater.
A means of draining must be fi tted to the mains water feed. We recommend fi tting an Airfi x
diaphragm expansion vessel to the mains water feed pipe.
The TW safety valve must be fi tted in an easily accessible place as it needs to be inspected
regularly and must be fi tted with a drain connection (see mains water connection diagram). A
plate bearing the following legend must be affi xed close to the safety valve blow off pipe or on the
safety valve itself as appropriate:
For safety reasons, it may be necessary for water to escape from the blow off pipe while the
system is heating up. Do not shut off or obstruct the blow off pipe.
Before commissioning, please check that the Mg anode is properly earthed (if a separate earth
connection is available) and fl ush the entire water heating system. If using an impressed current
anode (standard from 1500 l), please consult the accompanying operating manual. If using fi nned
tube heat exchangers, insulation joints must be used (see Flamco calorifi er accessories).
Additional electric heaters must be fi tted as per the instructions supplied; they must be regularly
inspected and serviced. Only additional electric heaters with potential equalization resistance may
be used (see the manufacturer's documentation for the possibility of using fi nned tube heat
exchangers in combination with electric heaters).
Unused connections must be professionally sealed. Make sure that condensation, which could
cause damage, cannot build up in unused coiled pipes.
The seal tightness of the system as a whole must be checked under normal operating conditions
and during maintenance and, if necessary, the fl ange couplings must be tightened. The safety
valve must be checked at regular intervals.
The water heater must be included in the equipotential bonding.
Temperature control/gauge:
Up to 500 l: The temperature sensor in the control unit of the heater and, if applicable, the solar
controller and/or the sensor of the integrated thermostat (if fi tted) are fi tted into the vertical
immersion sleeve under the control box with the clamping spring supplied. The height of the
component determines the switching point for reheating. In water heaters with an operating
temperature above 55 °C, the sensor should be positioned above the respective water supply
connection. The thermometer's remote sensor is fi tted into place above the component (approx.
20 cm down) with additional clamping springs. The clamping springs must be internally attached
to the sensors in such a way that their attachment cannot interfere with readings. The immersion
sleeve can accommodate up to three sensors (see foldout).
750 and 1000 l: The sensors can be positioned individually using the sensor connecting block;
however, this depends on the requirements of the boiler/solar unit manufacturer. The particular
contours of the insulation may make it necessary to install the sensors on the water supply side or
move them there. The temperature can be read from the thermometer supplied. It is to be fi tted
on the front of the unit in the G½ fi tting.
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