Vaillant atmocraft, Installation And Maintenance Instructions Manual

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Installation and maintenance manual atmoCRAFT

GB

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Safety instructions and regulations

3.1 Safety 

instructions

Assembly

The combustion air fed to the unit must be free of 
chemicals which contain, e.g. fluorine, chlorine or 
sulphur. Sprays, solvents or cleaning agents, paints and 
adhesives can contain such materials which can, in 
certain circumstances, lead to corrosion when operating 
the unit, including the exhaust gas installation.
In business premises such as hairdressing salons, 
painting or carpentry workshops, cleaning businesses 
etc., also when operating in room-air independent mode, 
a separate room must always be used for the installation 
which will ensure that the supply of combustion air is 
technically free from chemicals.
It is not necessary to keep a clearance between the 
appliance and combustible materials or components, as 
at the rated heating power of the appliance, the 
temperature here is always lower than the permitted 
temperature of 85 °C.
Clearances in accordance with Section 4.3 must be 
maintained for maintenance purposes.

Note concerning flue design:

The double stage system of the boiler with combustion 
air matching produces high values of combustion 
technological effectivity. This requires technical evidence 
of the suitability of the flue in according with the 
relevant standards.

Installation

Before the installation of the boiler, the comments of the 
gas supply company and the district chimney sweep 
must be obtained.
The boiler may only be installed by a suitably qualified 
heating engineer. who also assumes the responsibility 
for installing the appliance properly and putting it into 
service for the first time.

Flush the heating system thoroughly before connecting the 
appliance! By doing that, residue such as welds, cinder, 
hemp, putty, rust, rough dust and similar substances are 
removed from the pipes. Otherwise such substances can be 
deposited in the appliance and cause damage.
Make sure that the connection and gas pipes are not 
under stress when installed to avoid leakage in the 
heating installation or in the gas connection!
To tighten or loosen bolts, only use suitable open-ended 
spanners (do not use pliers or extensions etc.). Improper 
use or unsuitable tools can cause damage, such as gas 
or water leaks.
On closed heating installations, a type-approved safety 
valve corresponding to the heat capacity must be fitted.
The gas regulating block may be tested for leakage only 
with a maximum pressure of 50 mbar! Higher testing 
pressures can damage the gas fitting.

The electrical installation may only be performed by a 
heating engineer.
There is a danger to life by electrocution from current-
carrying components! 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 against restart.

Important instructions for propane appliances

Bleeding the liquid gas tank when installing the system:
before installing the device, make sure that the gas tank 
has been bled. The liquid gas supplier is responsible for 
the proper bleeding of the tank. Ignition problems can 
be caused if the tank is not bled properly. In such cases, 
first contact the person in charge of filling the tank.

Affix tank sticker:

Affix the enclosed tank sticker (propane quality) on the 
tank where it is clearly visible, if possible close to the 
filler nozzle.

Start-up

Do not add frost or corrosion preventative to the 
heating water! If frost or corrosion preventative is added 
to the heating water this can cause changes in the seals 
and can cause noises to be created during the heating 
process. Vaillant assumes no liability for this and such 
consequential damages. Please inform the user of the 
procedure for frost protection. If the heating water 
hardness is above 3,6 mol/m

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 (20 °dH) it should be 

softened. To do this you can use the ion-exchanger, 
Vaillant spare part number 990 349. Please observe the 
enclosed operating instructions.

For natural gas:

If the connected pressure is outside the range 17 to 
25 mbar, the unit must not be operated!

For liquid gas: (37 mbar)

If the connected pressure is outside the range 35 to 
45 mbar, the unit must not be operated!

Inspection and maintenance

Inspection, maintenance and repair work should only be 
undertaken by an approved heating installation company. 
Inspections / Maintenance work not carried out can result 
in damage to property and personal injury.
Risk of fatal electric shock from touching live 
connections! 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 against restart.
Protect the switch box from water splashes.
Danger of explosion through gas leakage! The mixer tube 
between the gas control unit and burner must not be 
opened. It can only be guaranteed that this component is 
gas-proof after it has been checked at the factory.

Safety instructions and regulations 3