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Installation as type B or type C with separate ducts
In case the conduct of evacuation of the products of the
combustion crosses the walls and/or furniture with
inflammable materials:
▶ Isolate thermally the conduct to guarantee that the
temperature of the contact surface is inferior to 85°C.
Maximum clearance to the facade
With horizontal installation:
▶ It must be ensured, that the clearance between the end of
the air inlet pipe and the facade is a maximum of 30 mm.
Fig. 18
Dimensions (in mm)
5.9
Altitude of installation location
The region altitude at the installation location must be given in
order to ensure that the device functions properly.
▶ Call up Service mode ( Section 7.2).
The display shows "P2".
▶ Press
until the display shows "P4".
▶ Press the
key.
The display shows "E".
▶ Press the
key, until the display shows "AS".
▶ Press the
key.
The display shows "1".
▶ Press the
or
region, in which the installation location is situated, in
accordance with the following table.
Display
1
2
3
4
5
6
Table 16
Therm 4000 S – 6 720 815 298 (2017/05)
6720804089-14.2V
key and select the altitude of the
Altitude
< 500 m
500 m - 1 000 m
1 000 m - 1 500 m
1 500 m - 2 000 m
2 000 m - 2 500 m
> 2500 m
5.10 Starting the device
Domestic hot water
▶ Open the gas and water taps and check all the connections
for leaks.
▶ Press the ON/OFF key (Fig. 7), Chapter 3.3)
The device is now ready for operation.
As soon as a hot water tap is opened, the flow sensor (Fig. 2,
[17]) sends a signal to the control device. The signal causes the
following effects:
•
The fan runs.
•
An ignition spark is generated. At the same time the gas
valve (Fig. ) for the burner opens. An ignition spark is
generated. At the same time the gas valve (Fig. 2, [13]) for
the burner opens.
•
The burner starts. Only one part of the burner starts
initially.
30
•
The ionising electrode (Fig. 2, [4]) monitors the presence
of the flame
•
The temperature sensors automatically monitor that the
water temperature accords with the set temperature.
Safety stop if the safety time is exceeded
If there is no flame present after the specified safety interval
has elapsed, a safety stop takes place.
The presence of air in the gas supply pipes (at the time of the
initial commissioning or after a long period without use) can
delay ignition or make this difficult.
In this case, where the ignition attempt has lasted too long, the
safety equipment blocks the operation of the device, and
ventilation of the circuit is then necessary.
Safety stop due to DHW temperature that is too high
The control detects the water temperature by means of a NTC
resistor housed in the hot water pipe. When an excessive
temperature is detected, a safety stop is triggered.
Safety stop due to disrupted flue gas routing
The device has detected disrupted flue gas routing and
performed a safety stop.
Restarting after a safety stop
To restart the device after a safety stop:
▶ Close the hot water tap and then open it again.
Installation (only for approved contractors)
21
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