5
Move out lambda sensor (B26) (1), unplug light
barrier (2), fold out casing on top, lift slightly and
remove.
5 The water installations
Here we refer to the standards and regulations
cited in this document.
5.1
The safety equipment
The safety equipping for the heating installation
should be carried out by the installing heating en-
gineer authorised to do so.
See Spec Sheets 3950-x for examples
5.2
Expansion
The water volume enlarged by the storage units
(option) requires a correspondingly large expan-
sion tank.
For closed expansion, the set pressure for the ex-
pansion tank should be equal to the max. facility
height plus 0.2 bar.
5.3
The burner circuit with burner con-
trol valve and storage unit valve
To reliably prevent burner corrosion through con-
densation of the exhaust gases, the burner tem-
perature must in no case be less than 70° C. For
this, a burner circuit pump should be provided with
a boiler control valve according to the diagram
(Spec Sheets 3950-x). The design of the burner
circuit should be carried out in such fashion that
the temperature difference between forward flow
and reverse flow is equal to or less than 15° C.
The triggering of the burner pump (230 V), burner
control valve and storage unit valve is integrated in
the control system that comes with the equipment.
5.4
Container for extinguishing water
(option)
Take note of the information on data sheet 4500.
As far as the installation is concerned, refer to the
installation instructions for the feed auger.
This functions by means of an extinguishing valve
and is not dependent on electric current. A float-
type level-control switch monitors the water level
and connects electrically. (See terminal connec-
tion diagram).
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