en-4
ENGLISH
4 Maintenance
Make sure that your waterheater is
descaled once a year when you live
in an area with hard water exceeding
12
0
dH (German standard of hardness)
4.1 Cleaning
Use a soft cloth with a non-aggressive clea-
ning product to clean the outside of the
waterheater.
4.2 Inlet combination
Regularly check whether the relief valve
(Figure 2.1) is not obstructed in draining the
expansion water from the waterheater.
The outlet of the relief valve on the
inlet combination must be kept open
to the atmosphere.
The relief valve on the inlet combi-
nation must be regularly operated,
to remove calcium deposits and to
verify that it is not blocked.
7 End of useful live
All materials used by Inventum are free of hazardous materials which could harm the
environment when these are dismantled and/or destroyed.
6 Legionella prevention!
The kitchen water heater is intended for use near to the kitchen tap which
provide hot water for daily use.
If the water temperature is higher than 45°C for any length of time and the
water is used daily there is only a very limited risk of legionella. To avoid any
risk after a long period of inactivity, it is recommended that the water should
be heated once to a temperature higher than 60 °C and then allowed to flow
through the tap for one minute .
If the kitchen water heater is used for showers (for example in a caravan), or if hot water is
not used for a long period regularly, it is recommended that the temperature be set higher
than 60 °C.
5 Malfunctions
This Inventum waterheater is extremely relia-
ble. However, if any malfunctions should
occur, follow the table of malfunctions (Table 1).
Contact your fitter if malfunctions
cannot be resolved by means of
the actions prescribed!
Please have the following information ready:
- product name;
- type number;
- serial number.
Do under no circumstance try to
repair the waterheater yourself. A
hazardous situation may occur, and
besides your guarantee will lapse.
The power supply cable may only be
replaced by the Inventum Technical
Service if it should be damaged, this
to prevent dangerous situations.
(Too) cold water. - Thermostat is set too low. • Adjust thermostat switch.
- Child-proofing is set loo low. • Set child-proofing higher (See 3.1).
- Hot-water tap is (too) long or is • Isolate the hot-water tap.
not isolated.
- Waterheater operated without water. • Reset thermal cut-out. Remove thermostat knob.
Too hot water. - Thermostat is set too high. • Adjust thermostat switch.
Too little water. - Water pressure is too low. • Check whether the cold- water taps have the
same problem.
• Contact the waterworks.
- Stop valve is not sufficiently open. • Open stop valve.
Too little water in vertical position. - Waterheater not placed correctly vertical. • Place the waterheater correctly, see figure 11.
Relief valve keeps leaking. - Water supply pressure is too high. • Place a pressure reducing valve before
the inlet combination.
- Relief valve does not close properly. • Operate relief valve a number of times.
Waterheater is leaking. - Water mains have not been • Switch off the electricity of the waterheater.
properly connected to waterheater • Close the stop cock.
or • Open a hot-water tap to release
- Inner tank is leaking the pressure in the waterheater.
• Collect the leaking water.
• Contact your fitter.
The waterheater makes - Calcification in the waterheater. • Contact your fitter.
boiling noises.
MALFUNCTION EXPLANATION ACTION
Table1: Table of malfunctions
UK
11007
Modesto/Modesto Hotfill
Storage Legionella growth Daily hot Advice
temperature water use
<
25
°C No growth not necessary Setting only for frost protection
25 - 40 °C Growth is possible required Setting not advised
45 - 60 °C Growth not possible required Only for kitchen use
>
60 °C Legionella dies not necessary Always safe
Legionella risk at set water heater temperatures
WARNING!
For waterheaters set at high temperature there is a burning hazard (more
specifically for children).
