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FA ROTEX GW - 09/2012
2 x Safety
2.5 Fundamental instructions for operational
safety
2.5.1 Before working on the heating system
Ɣ Work on the heating system (such as installation, connection
and initial start-up) may only be carried out by authorised,
trained heating technicians.
Ɣ Switch off the main switch and secure it against unintended
switching on when carrying out any work on the heating
system.
Ɣ Seals must not be damaged or removed.
Ɣ Make sure that the safety valves comply with the require-
ments of EN 12828 when connecting on the heating side, and
with the requirements of EN 12897 when connecting on the
domestic water side.
2.5.2 Electrical installation
Ɣ Electrical installations must only be conducted by electrical
engineers and in compliance with valid electrical guidelines
as well as the specifications of the energy supply company.
Ɣ Before completing the mains connection, compare the mains
voltage, indicated on the type plate (230 V, 50 Hz) with the
supply voltage.
Ɣ Before beginning work on live parts, disconnect them from the
power supply (switch off main switch, remove fuse) and
secure against unintentional restart.
Ɣ Equipment covers and service panels must be replaced as
soon as the work is completed.
2.5.3 Equipment installation room
Ɣ The ROTEX GW must not be installed in a spray-water area
(e.g. in shower areas in bathrooms).
Ɣ Only operate the ROTEX GW if a sufficient supply of
combustion air is ensured. If you operate the ROTEX GW in
a room-air independent manner with a concentric air/flue gas
system (LAS) dimensioned as per ROTEX standard, this is
fulfilled automatically and there are no other conditions for the
equipment erection room. With installation in residential
rooms, this method of operation applies exclusively.
Ɣ Make sure that, with installation in a room-air dependent or
limited room-air independent manner, an inlet air opening to
the outside of at least 150 cm
2
is provided.
Ɣ Do not operate the burner by the ambient air dependent
method in rooms with aggressive vapours (e.g. hair spray,
perchloroethylene, carbon tetrachloride), strong dust
formation (e.g. workshop) or high humidity (e.g. laundry).
Ɣ Always maintain the minimum distances to walls and other
objects (see chapter 4.4.1 and 4.4.2).
2.5.4 Requirements for the heating water
Avoid damages caused by deposits and corrosion: To
prevent corrosion products and deposits, observe the applicable
regulations of technology.
Measures for desalination, softening or hardness stabilization are
necessary, if the filling and top-up water have a high total
hardness (>3 mmol/l - sum of the calcium and magnesium
concentrations, calculated as calcium carbonate.
Using filling water and top-up water which does not meet the
stated quality requirements can cause a considerably reduced
service life of the equipment. The responsibility for this is entirely
that of the operator.
2.5.5 Heating system and sanitary connection
Ɣ Create a heating system according to the safety requirements
of EN 12828.
Ɣ With sanitary connection, you must observe;
– EN 1717 - Protection of domestic water from contamina-
tion in domestic water installations and general require-
ments concerning safety equipment for the prevention of
domestic water contamination by back-flow
– EN 806 - Technical regulations for domestic water instal-
lations (TRWI)
– and, in addition, the country-specific legal regulations.
When operating the ROTEX GW in combination with solar energy
exploitation, the hot water temperature can exceed 60 °C.
Ɣ Install a scald protection (domestic hot water mixing
construction, e.g. VTA32, 15 60 16) when installing the
system with an upstream solar hot water storage tank.
2.5.6 Fuel
The ROTEX GW is set, in the factory, to the type of gas quoted
on the type identification plate or on the setting type identification
plate, and to the quitted gas pressure.
Ɣ Operate the unit only with the gas type and gas pressure
indicated on these type identification plates.
Ɣ Installation and adaptation of the gas system must only be
conducted by personnel qualified for this work and in
compliance with valid gas installation related guidelines as
well as the applicable regulations of the gas supply company.
2.5.7 Operation
Ɣ Operate ROTEX GW only with closed and screwed down
silencer hood.
Ɣ Operate the ROTEX GW on the sanitary side only with an
adjusted pressure reducer (10 bar).
2.5.8 Instructing the user/owner
Ɣ Before you hand over the heating system, explain, as a
heating technician, to the owner how he/she can operate and
check the heating system.
Ɣ Hand over the technical documentation (this document and
all supporting documents) to the user and advise him that
these documents must be made available at all times and be
stored in the immediate vicinity of the unit.
Ɣ Make a record of the handover by filling out and signing the
installation and instruction forms jointly with the user/owner.
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