Protherm Tiger 24 (12) KTZ Operating And Installation Manual - Safety Measures
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Safety measures
The distance of flammable materials from
the flue section of the separated tubing
must be such that the surface tempera-
ture of these materials does not exceed
80 °C. Flue tubing termination must not be
located in areas:
• with explosion hazard (according to STN
33 2320)
• which are the indoor sections of buildings
(foyers, corridors, staircases, etc.)
• which are closable, i.e. thoroughfares,
etc.
• extending into terrain (even though they
are free of obstacles open to free space),
e.g. tunnels, subways, etc.
With respect to these principles of prohibi-
ted location of flues, the inlet termination
of air supply must also be evaluated inde-
pendently.
The opening in the wall for the dual tubing
– air supply and flue removal – is made
with deficient clearance (ca. 120 to 130
mm) and after completing the installati-
on it is sealed. The sealing must be done
using non-flammable materials (flamma-
bility grade A according to STN 73 0823),
e.g. wall plasters, plaster, etc. Holes in
flammable walls or ceilings are made ac-
cording to the first part of this section.
Electrical connection of the boiler
The boiler is connected to power supply
by a three-core flexible cord without a
plug. The fixed socket through which the
boiler is connected to power mains must
comply with the provisions of STN 33
2000-4-46. It must always have a protecti-
ve contact (peg), reliably connected with a
PE or PEN wire (yellow-and-green). The
boiler must be always connected to the
protection wire (earth) through its power
cord and must be always installed in such
a way that the socket and the plug are ac-
cessible. Using various adapters, extensi-
on cords etc., is not permitted.
The boiler is protected by one tube fuse (T
125 mA / 250 V), which is located on the
boiler control board – see diagram on pg.
33 and 34.
Important:
The plug and the socket as
well as a room control unit, which is an in-
terference with the boiler’s internal wiring,
must be under all circumstance connected
by a qualified electrician only, as defined
by Public Notice No. 50/1978.
Likewise servicing of the boiler’s electrical
part must be done by a person with the
above qualification only. Before carrying
out any works on its electrical section, the
boiler must be disconnected from power
supply by pulling the power cord plug from
the power socket!
Only room control units with zero-poten-
tial output may be used in conjunction with
the boiler, i.e. units which feed no foreign
voltage to the boiler.
Minimum required current carrying capa-
city of the control unit’s output terminals is
~ 24 V / 0.1 A.
The room control unit must be connected
to the boiler by a two-core cable. The re-
commended copper wire cross-section is
between 0.5 and 1.5 sq.mm.
The room control unit connection cable
must not run in parallel with power wires
or cables.
Electrical connection of the boiler