Windhager DuoWIN, Руководство по сборке

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2. For the Installer
2.2 System
2.2.1 Area of use
For heating buildings acc. to EN 12831.
These boilers/heaters are designed and approved as heat generators for hot water heating systems with permissible
flow temperatures of up to 90 °C. They may be installed
only in sealed systems
. The resulting flow temperature
depends on the relevant operating status and the line losses to the system.
Wood gasification boiler:
The max. boiler temperature for the wood gasification boiler is factory-set at 80 °C.
Pellet boiler:
The maximum flow temperature is factory-set at 75°C. In the service level, the max. boiler temperature can be
increased to 85 °C. To do this, an accumulator tank must be installed, which is loaded by the BioWIN 2.
2.2.2 Standards
European standard EN 12828 should be followed. This specifies that the following should be fitted:
a) A closed expansion tank.
b) A reliably functioning safety valve installed at the highest point of the boiler or at a non-closable line.
c) A thermometer and pressure gauge.
d) A low-water cut-off: this not required for systems providing up to 300 kW nominal thermal output, if it can be
assured that excess heating will not result from a lack of water in the system.
If the boiler is above the radiators, then a low-water cut-off must be installed.
e) Wood gasification boiler: an automatic device for dissipating heat, which will prevent the maximum boiler
water temperature from exceeding 110°C. The built-in thermal safety device (heat exchanger) should always
be used with the thermal discharge safeguard (accessory FK-060).
2.2.3 Heating circuits
Several heating circuits:
In-line regulating valves should be installed to permit better regulation of the system. In an uninsulated building
(new building, not yet plastered), the calculated and actual heating requirements often differ considerably.
Minimum heat consumption:
The smallest possible boiler power must continuously be dissipated from the boiler during operation. Suitable
measures to ensure minimum heat consumption should be maintained throughout the entire burning time, e.g.:
– Correctly dimensioned buffer tank - see 2.2.6.
– Function of the MESplus controller in the WVF+ function module on the master user module, including no
thermostatic valves.
– Non-blockable heating circuit never fully closed, including no thermostatic valves.
Note!
Elevated room temperatures may sporadically occur if operating with the MESplus function.
Motorised mixing valve:
A motorised mixing valve is
always required
for each heating circuit. A feed contact thermostat (FK-001) must be
installed for underfloor circuits.