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Lohberger Heiztechnik
GmbH
Operating Instructions
N29/HB/GB
page 6
Lohberger Heiztechnik GmbH, A-5020 Salzburg-Bergheim, Rechtes Salzachufer 40
Tel. 0662-450444-0, Fax-DW 9
Es gelten unsere aktuellen allgemeinen Geschäftsbedingungen. Irrtum, Druckfehler und technische Änderungen vorbehalten
4
System requirements
The products of Lohberger Heiztechnik GmbH are always combined with other structural devices and
therefore require specific system requirements for trouble free operation. In the following paragraphs
a few very important requirements are explicitly mentioned. This is not, however, a detailed list.
In the preliminary stages a well-grounded installation plan should be drawn up by a qualified installer
or heating engineer, so that individual system components can be adapted to each other and the
required overall solution achieved.
4.1
Application possibilities
As main heating system PNA 15/20/25/30 for:
Single and multi-family houses,
Multi-family homes, including hot water preparation.
Commercial buildings for small businesses
Micro-grids with multiple single-family homes
This distinction plays a decisive role in the design of the installation and the selection of components
(solar, buffer, etc.).
It is standard practice for a heat load calculation for the respective building where the boiler is
installed to be made by a qualified heating engineer and be available for inspection.
Historical data shows that during a heating season a heating system will be operated for a total of
approx. 1800 hours at nominal load (total nominal load and partial load hours added together).
4.2
Central heating room (minimum distances to flammable materials)
The boiler must be installed in a specially provided central heating room/location for that complies
with the structural requirements (e.g.TRVB H118). If you use an automatic feed system then the
pellet storage room must be laid out according to the above guidelines.
4.3
Water system, decrease in performance
The heat demand (heat requirement) during operation is dependent on the specific boiler size, for
PNA 15 min. 4.5 kW, for PNA 20 min. 6 kW, for PNA 25 min. 7,5 kW and for PNA 30 min. With lower
heat loss, the built-in safety devices are activated and/or the unit is shut down.
4.4
Room and ambient temperatures/humidity
The system is designed for operation in an environment with normal air humidity and room
temperatures of +5°C to +20°C.
At room temperatures below 5°C suitable anti-frost protection must be provided in the water circuit.
The system is not protected against sprayed water and must not be installed in wet rooms.
4.5
Flue connection
It is imperative that the boiler is connected to a flue that is suitable for solid fuels and is damp
proof. The flue draught must always be between a minimum of 5 and a maximum of 25 Pa. Prior to
installation, calculation and dimensioning of the flue must be carried out. Especially in the event of a
power cut the flue ensures the safe extraction of the flue gases from the boiler and therefore fulfills
an important safety function. If the flue draught is too high (>20 Pa) we recommend incorporation of
a draught regulator. See installation instructions of the chimney sweep.
The system should always be connected to its own flue, additional boilers must not be connected to
the same flue.
