Installation guide

17
In the case of clogging of the system with
dirt from the heating system or incrusta-
tion sediments or problems caused by
other clogging (e.g. clogging of the heat
exchanger, pump defects) are not covered
by the boiler’s warranty.
Upon installation and operation of the
boiler it is prohibited in the sense of STN
92 0300 for objects (classifi ed according
to STN 73 0823) to be placed at a distance
of less than:
- 100 mm in the case of materials which
are not easily fl ammable, fl ammable with
diffi culty or medium fl ammable;
- 200 mm in the case of easily fl ammable
materials (e.g. chipboard, polyurethane,
polystyrene, polyethylene, sponge PVC,
synthetic fi bres, cellulose materials,
asphalt strip, rubber and others).
Important: The surface temperature of the
upper parts of the boiler (particularly the
side walls and the cover) may exceed the
ambient temperature by up to 50°C.
A minimum manipulation (free) space
maintained around the immediate vicinity
of the boiler must be suffi cient for a person
to work on it safely with bare hands and
with common hand tools (we recommend
a minimum distance of 300 mm on all sides
and min. 600 mm in front of the boiler).
The PROTHERM Bear 20 (30, 40, 50)
KLZ boiler is compatible with common
types of hot water heating systems and
heating radiators.
Important: The PROTHERM boilers must
be put into operation only by authorised
organisations according to Czech Bureau
of Occupational Safety and Czech Safety
Inspectorate Notice No. 21/1979 (in the
wording of Public Notice No. 554/1990
Coll.).
The boiler must be put into operation
and warranty and post-warranty service
must be performed by the manufacturer’s
contracted service organisation, which
meets the above specifi ed requirements.
The boiler is designed to work in a normal
AA5/AB5 environment according to STN
33 2000-3 and STN 33 2000-5-51 (i.e.
within a temperature range of +5 to +40˚C
and humidity depending on temperature
up to maximum 85%).
The 20 (30, 40, 50) KLZ boiler must not be
installed in zones 0, 1 and 2, i.e. in rooms
with a bath tub, in bathrooms, washing
rooms and showers according to STN 33
2000-7-701 (Fig. 7).
The boilers are designed to run with
heating water compliant with STN 07 7401
(above all this water must not under any
circumstances be acidic, i.e. its pH factor
must be greater than 7 and must have a
minimal carbonate hardness).
The requirements for utility water
properties are defi ned in STN 83 0616 (for
drinking water STN 75 7111). If the water
has a combined calcium and magnesium
concentration greater than 1.8 mmol/l, it is
useful to implement other “non-chemical”
measures against incrustation (e.g. use of
magnetic water treatment combined with
a desludging device).
Installation instructions
Installation instructions
Introduction
Fig. 7
Zones