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Fig. 1: Controlling the automatic and manual supply of combustion air
1. Firing flap controlling the access of air into the boiler
2. Automatic and manual setting screw
3. Locking nut of the setting screw
4. Automatic controller chain
To allow automatic control of the firing flap by the controller, the screw (2) secures the nut (3) to allow a full
closing.
The chain (4) shall be connected to the screw (2). The flap opens when turning screw to the right and closes
when turning to the left. Before handling this assembly it is necessary to loose the nut (3).
C) Technical parameters
Operating flue
Water volume
Smoke flue diameter
Hydraulic loss of the boiler @ ∆T 20° / 10°
Boiler class
Burning time
Temperature control range
Minimum temperature of the inlet water
Fuel shaft volume
Charging hole dimensions
Nominal thermal power
Thermal power control range
Flue gas temperature at rated / minimum thermal power
Mass flow of flue gases at rated / minimum thermal power
Efficiency
Operating overpressure
Heating surface
Boiler weight
Fuel consumption
Fuel type and water content in the fuel
Fuel size
Hot Water Boiler Manual – Models H 635, H 650
Parameter
Unit
(mbar)
( l )
(mm)
(mbar)
(hr.)
(°C)
(°C)
( l )
(mm)
(kW)
(kW)
(°C)
(q/s)
(%)
(bar)
2
(m
)
(kg)
(kg/hr.)
Lignite b2, H
Nut
3
Model
H 635
H 650
0.25
0.3
80
110
160
160
0.7 / 0.2
0.07 / 0.2
1
1
4
4
max. 90
max. 90
65
65
67
97
229 x 292
229 x 418
35
49.5
20.8 - 35
29.5 – 49.5
260 / 218
262 / 215
26.9 / 15.9
42.7 / 26.6
71
71.5
2
2
2.7
3.8
334
413
9.8
16.3
O max. 20%
2
1
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