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3
Information on installation and operation
3
Information on installation and operation
Observe all standards and guidelines applicable to the
installation and operation of this system in your country.
The details on the data plate are definitive and must be
observed.
3.1
Combustion air quality
▶ Keep the supply of combustion air free of corrosive substances (e.g.
halogenated hydrocarbons that contain chlorine or fluorine
compounds).
This will help to prevent corrosion.
▶ Never use or store chlorinated cleaning agents or halogenated
hydrocarbons (as contained in spray cans, solvents or cleaning
agents, paints and adhesives, for example) in the boiler room.
▶ Keep the combustion air supply free of dust.
▶ If building work is taking place in the installation room and creating a
lot of dust, shut the boiler down. A burner contaminated during
building work must be cleaned before commissioning.
3.2
Heating water quality
The quality of the fill and top-up water is an essential factor for
efficiency, functional reliability, long service life and for maintaining the
constant operational condition of a heating system. If the system is filled
with water that has a high calcium hardness, this will be deposited on the
heat exchanger surfaces and will restrict the transfer of heat to the
heating water. As a result, the wall temperatures of the stainless steel
heat exchanger surfaces will rise and the thermal stresses (loads on the
boiler shell) will increase.
This is why the quality of the fill or top-up water must meet the conditions
stipulated in the operator's log provided and be recorded in this log.
3.3
Using antifreeze
Chemical additives that are not certified as harmless by
the manufacturer must not be used.
Antifreeze based on glycol has been used in heating systems for many
years, for example Antifrogen N manufactured by Clariant.
The use of other types of antifreeze should not be a cause for concern if
the product is comparable with Antifrogen N.
Observe the antifreeze manufacturer's instructions. Follow the
manufacturer's details regarding mixing ratios.
The specific thermal capacity of Antifrogen N antifreeze is lower than the
specific thermal capacity of water. To enable the transfer of the required
heat output, increase the required flow rate accordingly. This should
also be taken into account when sizing the system components (e.g.
pumps) and the pipework.
As the heat transfer medium has a higher viscosity and density than
water, take the higher pressure drop through the pipework and other
system components into account.
Check the resistance of all plastic or non-metallic components in the
system separately.
6
4
Commissioning
▶ Ask your contractor to provide information about how the boiler
works and is operated.
▶ Never undertake any modifications or maintenance.
4.1
Preparing the heating system for operation
For you to be able to commission the heating system, observe the
following:
Open the automatic air vent valve only briefly for venting.
▶ Check that the required operating pressure has been built
( chapter 7.3).
▶ Check the flange connections and other connections for tightness.
▶ Fill the condensate siphon.
▶ Open the fuel supply to the main fuel shut-off valve.
▶ Switch on the heating system emergency stop switch.
4.2
Commissioning the control unit and burner
By commissioning the control unit you automatically commission the
burner as well. The burner can then be started by the control unit. For
further information, see the installation instructions of the relevant
control unit or burner.
▶ Use the control unit to commission the boiler.
Logano plus SB325 – 6 720 806 353 (2012/07)
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