9
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from the return safety valve into the drain, you can avoid the dripping by installing a 3-litre
expansion tank on the inlet water pipe of the boiler.
Water may come out in drops from the exhaust pipe of pressure reduction device i.e, safety
valve, this pipe has to be open and positioned downwise, to prevent freezing of the water in
the pipe. By regular function of the safety valve it should be possible to remove
limescale sediment as well as to check if it is bloacked. Safety valve is delivered with the
water heater and the sheme shows how to install it. At installation of a water heater and its
connection to water supply, it is recomanded to use new set of hoses, old ones should not
be used.
CONNECTION TO POVER SUPPLY
Electric accumulation water heater is connected to power supply by valid standards for
electrical installations, with a plug cable 3x1,5 mm H05VV.
Before connecting power supply cable, unscrew the two screws and remove protection cap
of the electric water heater. The electric water heater is not delivered with a device to cut off
the power from the supply permanently. A separating element of all the poles from the supply
should be included, according to local installation rules. Such separating means have to be
included in the electrical installation.
1. Thermoregulator
2. Heater
3. Connection clamp
4. Signal lamp
L – phase
N neutral
Ground
WARNING
: Before any intervention the water heater must be disconnected
from the power supply line.
USE, CONTROL, MAINTENANCE OF ELECTRIC WATER HEATERS
After connecting it to water and power supplies the water heater is ready to use. For types
without external heater regulation (no button on the cover), water temperature is regulated
by a preset thermoregulator. It is recomanded not to change the set temperature (t=55°C)
being optimal for saving energy and minimum limestone sedimentation. Should the user
however want to change the temperature of water heating, the water heater should first be
disconnected from power supply line, protection cap on the bottom should be taken off, and
by turning plastic button directly on the thermoregulator, water heating temperature can be
set to be lower or higher within the range 20 to 70±5°C.
