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6.- INSTALLATION RECOMMENDATIONS
In order to have a correct operation of the NOFER electric water
heater, please take into account the below considerations:
1. Water pressure at electric water heater inlet must be between 1.5 and
5 bar. Also all cosiderations explained at point 3) of this manualmust
be taken into account.
2. It is compulsory to install a drain pipe to evacuate water drops from
safety valve. Possible damages caused at home due to this drops are
not responsibility of NOFER.
3. If water pressure is higher than 2.5 bar we recommend the installation
of a pressure reduction valve and a expansion vessel. The pressure
reuction valve must be installe as close as posible from the house
water inlet pipe.
4. The network water must have a minimum quality characteristics to be
acceptable under corrosion point of view. The limits stablished by
NOFER are the below ones:
Ryznar index less than 7.
Conductivity at 25 ºC < 350
/
cm
Chlorine (Cl
-
) and sodium (Na
+
`) less than 75 mg/l
5. The use of chemical scale eliminators is allowed but the hardness
must be regulated between 18ºF and 31 ºF.
USER'S MANUAL
1.- USER'S INSTRUCTIONS
IMPORTANT: Be sure that the water heater is filled with water before
plug in. You could be sure that the water heaters if completely filled
when water come out from a hot water tap.
The water heater is ready to use at the moment it is plugged to
electrical network. The thermostat allows the user to regulate the
temperature from 15 to 75ºC using a high precision bulb. Using this
regulation knob the user could adapt the water storage temperature to the
weather conditions and his particular needs.
