Technical Documentation waterfan HEATER
5. ELECTRICAL INSTALLATION
The electrical installation and connection to power supply must be done in compliance with the existing regulations and
standards for building industry.
The fan’s engine is equipped with the internal temperature limit fuse protecting the engine from its overheating.
The unit set does not consist of: a feeding cable, a master switch (see diagram)
The electrical installation must be done by an authorized person, acquainted with the Manual. The connection of the feeding
cable and master switch must be done in compliance with electrical diagram (with or without the automatic control, depending
on the option chosen). Any and all damages incurred as a result of the aforementioned causes are not provided with the
Guarantee and the user will be charged with any costs of the device exchange. The connection of the automatic control should
be carried out in accordance with the electrical diagram.
In case of any doubts or problems, unplug the device and contact the device’s installer or SONNIGER Authorized Service.
6. WATER INSTALLATION
The installation of the unit should be done in a way enabling maintenance service; on both stub pipes manual closing valves
should be installed in order to cut off the device. Feeding cables of the heater shall be connected in accordance with the
symbols/marking on the casing (inlet/outlet). In case of electromagnetic valve (with the option of the automatic control) it should
be installed on the outlet as it may be damaged otherwise. When the pipework is being connected to the exchanger, secure the
connections of the heater from oscillating torque (see figure) that may cause leakage in the exchanger.
OUT G 3/4"
IN G 3/4"
WATER DRAIN
AIR VENT
7. AUTOMATIC CONTROL – INSTALLATION
A set of automatic control may be used (powered 230V) that consists of the following:
3-speed controller
Room thermostat – manual or programmed weekly
2-way water valve with actuator; valve should be installed on a return stub of the heater
Electronic control panel with an automatic speed controller.
The system is ready to start once the connections between the thermostat and the valve actuator are done, 230V power is
supplied to the thermostat and the fan’s motor is powered by the revs controller.
The connector pipes are at the back of the
device. When connecting the hydraulic
pipes/connections, make sure you secure the
connector pipes against rotational torque.
Notice that the connector pipes are not
strained by the pipes. The valve of heating
medium is on the supply pipe and the vent is
on the return pipe.
Use flexible connections to allow the heater to
be turned to the sides. Depending on the
flexible connections, the maximum turn is 78°
to both sides. Figure shows maximum angle to
one side and 50°to the other with minimal
distance left for connections.
