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Use
This chapter contains a checklist of the items that
must be attended to before starting up the appliance
(fireplace with heat exchanger) for the first time and
describes some other important points regarding the
operation and use of the installation.
Checklist for first use
Work down the following checklist before you start
using the appliance.
The appliance, the flue gas part as well as the
water part, has been installed expertly.
The heating installation has been filled up with
water and vented.
The circulation pump is electrically connected and
ready to run.
Unused connections, e.g. the drain connection or
connections for temperature sensors, are sealed
with the correct plugs.
The pressure in the cold-water pipeline is at least 2
bar. (This is necessary for the thermal protection.)
Water is flowing through the cold-water pipeline.
(You check this by pressing the red button of the
thermal protection valve.)
The temperature sensors of the pump control sys-
tem and the thermal protection valve are connected
and operate correctly.
The temperature sensors of the pump control sys-
tem and the thermal protection valve are located
outside the fireplace casing.
The fire-resistant inside cladding of the fireplace
has been fitted.
The appliance may not be commissioned
unless these checklist items have been atten-
ded to.
10
Calculating the heat requi-
rement and heat emission
Bear the following points in mind when you want to cal-
culate the heat requirement and the heat emission:
When you calculate the heat requirement of a
home or building according to the customary rules
of thumb, remember to add the thermal requirement
for domestic warm water.
A fireplace does not continuously deliver heat to
the heating system. The capacity can substantially
exceed the rated capacity.
The amount of heat emitted by a fireplace depends
on the amount of wood burnt during a particular
period of time. Example: 1 kg beech containing
18% moisture has a calorific value of 4.0 kWh/kg.
If the fireplace is filled with 5 kg of beech, it will pro-
duce 20 kWh's worth of energy. From this, the heat
loss in the chimney must be deducted. Depending
on the type of fireplace, the heat loss can range
from 15% to 20%.
Operating temperature
Water temperature
The operating temperature of the water lies between
60°C and 95°C.
If the operating temperature drops below 60°C,
there is considerable risk of the heat exchanger get-
ting dirty. This significantly reduces the efficiency
of the appliance.
When the operating temperature rises above 95°C,
the thermal protection is activated automatically.
The heat is then dissipated.
See the "Maintenance" chapter for information on cle-
aning the heat exchanger and the annual check of the
thermal protection.
Minimum return temperature
Set the minimum return temperature to 60°C. This will
prevent damage to the heat exchanger.
The installation of a minimum return temperature con-
troller is an absolute prerequisite. This controller ensu-
res that the heat exchanger quickly reaches the
Subject to change because of technical improvements
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