Vaillant ecoCRAFT VKK GB SERIES Installation And Maintenance Instructions Manual - page 8
3
Safety instructions and regulations
The appliance may only be installed by a competent
qualified person registered with Corgi.
3.1 Safety
instructions
The combustion air fed to the unit must be free of
chemicals e.g. fluorine, chlorine or sulphur. Sprays,
solvents or cleaning agents, paints and adhesives can
contain such materials which can, in certain circum-
stances, lead to corrosion when operating the unit,
including the flue gas installation.
a
Caution!
Malfunction!
The combustion air must be free of particles or
the burner can be contaminated with dirt.
Take particular care that no building dust or
fibres of insulating material are present in the
combustion air.
In business premises such as hairdressing salons, paint-
ing or carpentry workshops, cleaning businesses etc.,
when installed as an open flued appliance. It is desirable
that the boiler is installed in a purpose made boiler
room conforming to the guidance within BS 6644.
The boiler shall only be sited on floors and adjacent to
walls capeable of withstanding at least 65 degrees C.
(However, the recommended minimum distance in
section 4.3.2 must be observed).
A safety valve must be fitted to the boiler as defined in
BS 6644 for both single or modular cascades of boilers.
h
Note concerning flue design:
Modulation of the boiler together with
combustion air matching produces high values
of combustion efficiency. This requires
technical evidence of the suitability of the flue
in according with the relevant standards.
Installation
• Flush the heating system thoroughly before connect-
ing the appliance!
In this way, residue such as cinders, hemp, putty, rust,
welding residues, coarse dirt and similar substances
are removed from the pipes.
Otherwise such substances can be deposited in the
appliance and cause damage.
a
Caution!
Leaks!
Make sure that the connection and gas pipes
are not under stress when installed to avoid
leakage in the heating installation or at the gas
connection!
a
Caution!
Damage to the screwed connections!
To tighten or loosen bolts, only use suitable
open-ended spanners (do not use pliers or ex-
tensions etc.) Improper use or unsuitable tools
can cause damage, such as gas or water leaks!
Always tighten the couplings fixing the flow distributor
and the return collector to the heat exchanger block
with a torque wrench set to 12 Nm.
On sealed heating installations, a type-approved safety
valve corresponding to the heat capacity must be fitted.
a
Caution!
Damage to the gas valve!
The gas regulating block may be tested for
leakage only with a maximum pressure of 110
mbar! The operating pressure must not exceed
60 mbar! If these pressures are exceeded, the
gas valve may be damaged.
The electrical installation must only be made by a quali-
fied electrician in accordance with BS 7671 and the Elec-
tricity at Work Regulations.
e
Danger!
Danger of death from electric shock!
The supply terminals in the terminal box of the
device are under voltage even if the mains
switch is off. Before working on the appliance,
turn off the power supply and secure it against
being switched on again!
Installation and maintenance instructions ecoCRAFT - 0020055744_03
8
3 Safety instructions and regulations