9
2.
For the Installer
Diagram 1 water-side resistance
Pressure loss (mbar)
Flow
rate
(m
3
/h)
LWK 180 – 300
2.2.10 Combustion air
The combustion air is drawn directly by the device from the installation room, therefore the installation room has to
be adequately ventilated. The combustion air should be directed to the vicinity of the boiler and must be free from
pollutants (gases, vapours and dusts), otherwise malfunctions and increased wear (e.g. corrosion) may occur.
The area of the free minimum cross-section must be 5 cm
2
per kW of the boiler‘s nominal total output
1
.
The opening to the outdoors for combustion air should be designed as follows:
– the flow of air must not be restricted in any way by the weather (e.g. snow, leaves),
– the free cross-section area remains the same when taking the cover grille, discs etc. into consideration.
Information!
Malfunctions or complaints occasioned by inadequate combustion air will not be covered by the
guarant
ee!
1 The boiler‘s nominal total output is the sum of the nominal outputs of all heat generators installed in the same boiler / installation room.
2.2.7 Domestic water (bringing the hot water tank up to temperature in
summer)
There may still be fuel in the boiler after the hot water tank has been brought up to temperature. As a result,
measures must be taken to dissipate the surplus energy – see 2.2.4 Heating circuits; Minimum heat consumption.
2.2.8 Combination with automatic boiler (e.g. pellet or oil-fired boiler)
If the LogWIN and an automatic boiler (e.g. pellet or oil-fired boiler) are connected to one flue
without a MESplus
control, in the case of LogWIN a flue gas thermostat (accessory OK-050) must be installed to prevent parallel
operation on the same flue.
2.2.9 Water-side resistance (pressure loss)
