
4 Planning and installation – HDG cyclone dust extractor
60
✎
For further procedures in the attachment of the hoses, see the
operating manual for the HDG pellet delivery system PSS or FRA-
PSS and the HDG pellet vacuum system, chapter 4 "Planning and
Installation", section 4.5 "HDG pellet vacuum system", paragraph
"Installing the vacuum and return hose".
4.6 HDG cyclone dust extractor
✎
All information and instructions regarding the functioning, instal-
lation, start-up, maintenance/cleaning etc. can be found in the ac-
companying "Operating and Maintenance Manual for the HDG
Cyclone Dust Extractor".
U
NDERPRESSURE
CONTROL
Optionally available is an HDG underpressure control with frequency
converter and differential pressure transmitter for adaptation to
changing chimney conditions. It creates an automatic adjustment to
the underpressure required with output and combustion control and
thereby improves the of the partial load capacity of the system.
✎
See the "HDG underpressure control" manual.
4.7 Electrical system
The electrical connections must be made in accordance with DIN IEC
60364 “Setting up low-voltage electrical installations”.
✎
The technical details are described in the chapter “3 Mode of ope-
ration”, section “3.3 Technical data”.
1. Install the electrical connections in accordance with the provided
circuit diagrams.
✎
The circuit diagrams can be found in the supplied documentation.
4.8 Water
The heating system must be filled with water in accordance with VDI
guideline 2035, “Avoiding damage in hot water heating systems”.
The diaphragm expansion vessel must be constructed in accordance
with DIN EN 13831 “Closed expansion vessels with built-in dia-
phragm for integration in water installations”.
Before putting the system into operation, the pressure of the dia-
phragm expansion vessel must be adjusted for the conditions in the
heating system and in the building.
After putting the system into operation, heat up the system to the
maximum boiler temperature and bleed air from the system again to
make sure that there are no air pockets.