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2.4 Regulations for fulfilling the
passive energy house criteria
2.4.1 Frost protection equipment for the
heat exchanger
In order to guarantee continuous ventilation,
the outside air must be preheated, when
outside air temperatures fall below 0°C.
We recommend the following components for
installation in the outside air inlet:
● EW earth heat exchanger system or
● Electrical preheating register ERH 12-1,
see Chapter 9.4. The switching
temperature can be set at the rotary knob,
see supplied instructions.
2.4.2 Switching off a hydraulic heat
register
When a hydraulic heat register is installed in
the supply air channel, the heat register must
be protected against frost damage. This can
be guaranteed by switching off the unit.
We recommend installing the thermostat
TH 10 as a safety device, see wiring
diagram. The switch-off temperature must
be set to 7 °C at the thermostat.
2.5 Regulations for operation with
fireplaces
Observe the current rules from the German
Federation of Chimney Sweeps (Evaluation
criteria for the joint operation of fireplaces –
domestic ventilation – extractor hoods) as
well as other pertinent regulations and
guidelines.
The ventilation unit may only be installed
in rooms, apartments or living units of a
comparable size with air-ventilated
fireplaces, if:
● the evaluation criteria drawn up by the
responsible, regional master chimney
sweep are met,
● a parallel operation of air-ventilated
fireplaces for liquid or gaseous fuels and
the air-extracting equipment can be
prevented, or
● the extraction of exhaust gas from the air-
ventilated fireplaces is monitored by
special safety equipment. The ventilation
unit or the fireplaces must be switched off if
the equipment is triggered.
Only operate the ventilation system at
i
the same time as an air-ventilated
fireplace if using differential pressure
control.
NOTICE
The ventilation unit may not be installed in
living units with air-ventilated fireplaces
that are connected to exhaust gas
systems, which themselves have multiple
connections. Combustion air ducts must
be capable of being blocked. In the case
of solid fuel fireplaces, any blocking
device may only be operated manually.
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