ENGLISH en-3
2 Description
This waterheater designed for storing and hea-
ting drinking water. The waterheater contains an
isolated innertank suitable for 10 litres of water.
The in-built electrical heating element heats up
the water. The waterheater can be incorporated
into a water supply system by means of the
hot-water and cold-water connection.
2.1 Main components
The main components are shown in figure 1 on
page 1.
2.2 Product identification
The type plate contains the following data:
- product name;
- type number;
- serial number;
- capacity [L];
- quality marks;
- working pressure [kPa or bars];
- power [W];
- electrical connecting value [V];
- CE marking;
- damp resistance.
2.3 Quality marks
You will find the applicable quality marks on
the type plate.
2.4 Basic operation
System under pressure (figure 2.1)
Cold tap water enters the waterheater via the
inlet combination. The thermostat and the elec-
trical heating element heat up the water to the
pre-set temperature. When the water is heated,
it expands, increasing the pressure in the water-
heater. This overpressure is limited by the relief
valve of the inlet combination.
Unpressurised system (figure 2.2)
This application does not make use of an
inlet combination. The special unpressurised
mixing tap drains away the expansion water.
During the heating of the water, the tap
drips until the pre-set temperature has been
reached. There should never be any obstruc-
tion for the expansion water to drip from the
tap.
System under pressure (figure 2.3)
The waterheater is included in the main hot
water system. During use, the waterheater is
filled directly with hot water from the main hot
water provision, ensuring that it is always pos-
sible to draw hot water. The thermostat and the
electrical heating element heat up the water to
the pre-set temperature. When the water is hea-
ted, it expands, increasing the pressure in the
waterheater. This overpressure is limited by
the relief valve of the inlet combination.
Figure 2.1 Basic operation of a
pressurised system
Figure 2.2 Basic operation of a
unpressurised system
3.1 Operation
The temperature switch can be adjusted to
continuously variable.
- Minimum:
Frostproof position (
*
). The water tempera-
ture is approx. 10 °C;
- 45 °C:
Energy saving position. This position can be
used for washing hands and rinsing, for
instance. This position reduces calcifica-
tion in the waterheater;
- 60 °C:
This is a common temperature for washing-
up water;
- 75 °C:
Maximum position. For hot water or much
warm water. The water heater supplies app.
20 litres of 40 °C.
3 Operation and use
3.2 Putting into operation and
terminating the system
Check if the waterheater is filled
with water!
The waterheater is connected to the electricity grid
by means of a wall socket.
• Connect the power plug to the wall socket to
put the waterheater into operation;
• Disconnect the power plug from the wall socket
to put the waterheater out of operation or turn
the temperature adjustingknob to ”
*
”
(frost
proof position).
3.3 Checking the operation
Systeem under pressure
The waterheater heats up the water if the expan-
sion water trickles from the relief valve.
Unpressurised system
The waterheater heats up the water if the expan-
sion water trickles from the outlet pipe of the tap.
3.4 Activities regarding water main
If the water pressure should be cut off, for
example due to activities regarding the
main, flush - as soon as the water pressure is
back - through a cold-water tap untill the
water remains clear.
3.5 Water and energy saving
By using (hot) water with care, you protect the envi-
ronment and decrease your water and energy bill.
Fig. 3 Temperature adjusting knob with child-proofing
UK
Modesto
Modesto Hotfill
A Waterheater
B Hot-water
hose
C Cold-water
hose
D Inletcom-
bination
E Relief valve
F Stop cock
G Funnel
H Drain hose
J Tie-wrap
K Drain T - joint
A Waterheater
B Hot-water
hose
C Cold-water-
hose
D Unpressurised
mixing tap
E Outletpipe/
Draining pipe
for expansion
water
A Waterheater
B Hot-water
hose
C ”Hotfill”
hose
D Inletcom-
bination
E Relief valve
F Stop cock
G Funnel
H Drain hose
J Tie-wrap
K Drain T-joint
Modesto
Modesto Hotfill
Modesto
Figure 2.1 Basic operation of a
pressurised system, ”Hotfill”
Child-proofing
If required, the setting of the temperature
switch can be blocked by means of a child-
proof lock. (fig. 3).
• Turn the temperatu-
re adjusting knob to
the position with the
star;
• Twist the red child-
proofing with a screw-
driver to the desired
blocking position;
• The knob cannot be
turned any further
than the set value.
11007
Modesto/Modesto Hotfill
See also page 5 of this manual!
