Operating Instructions and Installation Instructions

VARINO GRANDE 350 - 600
We reserve the right to make changes to dimensions and construction 12 Edition 10.07.2015
© Copyright YGNIS AG CH-Ruswil
6. Installation guide
6.1. General comments relating to installation
6.1.1. Basic details
The perfect operation of the condensing unit and the manufacturer’s warranty are only guaranteed if installation
and operation take place in accordance with the instructions from the manufacturer and the condensing unit and
burner are maintained on a regular basis.
Installation and commissioning of the electric, firing and heating unit parts should only be carried out by
authorised specialists in accordance with local regulations.
Defects and damage which are caused by improper handling or damage caused by force, release the
manufacturer from this warranty.
6.1.2. Regulations
The installation of the condensing unit and heating plant is to be exclusively carried out by specialists in
accordance with the applicable standards and constructional specifications.
6.2. Storage
If the condensing unit has to be stored before being placed in the boiler room then it should be stored in a dry
and frost-free area.
6.3. Combustion air supply
The supply of combustion air directly from outside must be ensured through openings which cannot be shut-off.
Minimum air consumption 1.6 m
3
/h per kW boiler power.
Minimum free cross-section for the opening of the combustion air = 6 cm
2
per kW boiler power.
Important: The combustion air should not contain large amounts of dust and particles.
Furthermore, it must be free of halogens (chlorine and fluorine compounds). An excessive presence of
halogen in the combustion air leads to great corrosion damage. The maximum permitted amount of
halogen in the combustion air is 5 ppm.
Halogen compounds are found in spray cans, thinners, cleaning agents, degreasing agents and
solvents, among others. In addition, halogen emissions are strongly suspected in the vicinity of dry
cleaners', hair dressing salons, swimming pools, printing offices and washing machines installed in the
same room.
In the case of doubt, the perfect quality of the combustion air must be ensured with an external air
intake. Make sure that there is a minimum loss of pressure, since this could impair the performance of
the burner (see chapter 4.4). A built-in air duct for the external air intake is available as option.