Electrical System; Water - HDG Euro 30 Operation Manual

4 Planning and installation – Connections
U
SING AN ACCUMULATOR
28
• To prevent dust from escaping, the flue pipe must be sealed with
heat-resistant silicone.
E
LECTRICAL SYSTEM
The directives of 2006/95/EC (low voltage guidelines) must be
followed for the electrical connections to the system. The electrical
connection must be made on a separate isolating unit.
✎
The required connection values are described in chapter "3 Mode
of operation", section "3.3 Technical data".
W
ATER
The coatings formed by stones in the heat generator can have a
detrimental effect on the efficiency of the heating/boiler system and
can lead to damage and faults.
Important!
The heating system must be filled with water in accordance with
VDI guideline 2035, "Avoiding damage in hot water heating
systems".
Antifreeze agents may only be used after prior consultation with
HDG.
When calculating the thermal requirements of buildings, e.g.
according to DIN EN 12831 "Method for calculating the normal
heating load", the lowest outside temperature of the relevant climate
zone (e.g. -15 °C) is used. These conditions only apply a few days per
year, thus, the thermal performance of the heating system is greater
than required on most days when heating is needed.
As the boiler for this system is rated for a nominal load, the use of an
accumulator is required.
The size of the accumulator must be adapted to the boiler type, the
type of wood and the building's heating requirements. In terms of 1.
BImSchV, the minimum capacity of the accumulator is 12 litres per
litre of fuel chamber capacity; however, the required 55 litres per kW
of nominal thermal power must be maintained.
For the HDG Euro 30/40/50 boiler, the minimum accumulator
volume is 3000 litres.