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4 Description of the product
4.1 General description
POWER HT + floor-standing condensing gas boilers have the following
characteristics:
Low pollutant emissions
High efficiency heating
Electronic control panel
Flue gas discharge by a forced flue, chimney or bi-flow type connection.
Perfectly suitable for cascade systems with several boilers.
4.2 Operating principle
4.2.1 Circulation pump
Note
The benchmark for the most efficient circulators is EEI ≤ 0.20.
4.2.2 Gas/air setting
The casing fitted to the boiler is also used as an air box. Air is drawn in by
the fan and gas injected into the Venturi by the fan intake. The fan speed
is modulated according to the settings, the heat demand and the actual
temperatures measured by the temperature sensors. The gas and air are
mixed in the Venturi. The gas/air ratio command function accurately ad
justs the quantities of gas and air required. This provides optimum com
bustion over the entire output range. The gas/air mixture is sent to the
burner, located upstream of the heat exchanger.
4.2.3 Low-loss header (accessory)
The low-loss header is used to prevent interaction between the dynamic
pressures within the boiler and the heating circuits. The low-loss header
considerably reduces the variations in pressure and flow rate caused by
the use of several circulating pumps in an installation and is used to man
age flows in the installation and to control temperatures.
Fig.2
Boiler equipped with the low-loss
header kit
MW
-3
0
0
0
1
4
4
-0
2
4 Description of the product
7609475 - v04 - 15072015
POWER HT +
13
Содержание POWER HT+ 1.110
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