Enertech BG 700-2, Инструкция по установке и обслуживанию

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172 205 16 07-01
If the barometer height, pressure and temperature of the gas deviate very much from the normal values this must
be taken into account as follows:
f =
273+t
. 1013,25
273
B+P
u
t = Temperature of the gas at the gas meter (15°C)
B = Barometer height (945 mbar)
P
u
= Pressure of the gas at the gas meter (15,0 mbar)
f =
273+15
. 1013,25
273
945+15
f = 11,1
The gas volume read on the gas meter actually reads 1,11 . 12,9 = 14,4 m 3 /h.
Net caloriic value
Gas quality kWh/Nm 3 kJ/Nm 3 kcal/Nm 3
Natural gas 10,3 37 144 8 865
Propane 26,0 93 647 22 350
Butane 34,3 123 571 29 492
Town gas 4,9 17 653 4 213
Bio gas 7,0 25 219 6 019
V = Gas volume Nm
3
/h
Q = Boiler output 120 kW
H
u
=
Caloriic value of the gas A. 37 144 kJ/Nm
3 , B. 10.3 kWh/Nm 3
η
=
Expected eficiency 90%
Ex. A v=
Q .3 600
=
120 . 3 600
≈
12,9 Nm 3 /h
H
u
·
η
37 144 . 0,90
Ex. B v=
120
≈
12,9 Nm 3 /h
10,3 · 0,90
Example how to calculate the gas volume (natural gas)
DETERMINATION OF GAS VOLUME FOR THE INSTALLATION
Speciications on natural gas, town
gas and bio gas vary. For more exact
information please contact the gas
distributor.
172 305 54 08-01
FUNCTION, 2-STAGE DESIGN
Air adjustment
The damper motor turns the damper
between three pre-set positions: fully
closed, low load, full load. These
positons are controlled in the motor
by cams of different colours. The
black cam controls the gas valve for
full load.
Low load:
Adjust the operating switch to full
load (ll).
* Reduce the air volume:
Turn orange cam towards 0°
* Increase the air volume:
Turn orange cam towards 90°
Adjust the operating switch back to
low load and check the air volume.
Full load
Adjust the operating switch to low
load (l).
* Reduce the air volume:
Turn red cam towards 0°
* Inrease the air volume:
Turn red cam towards 90°
If the red cam is moved, change the
black cam as much.
Adjust the operating switch to low
load and check that the correct air
volume has been obtained.
Note!
The blue cam is the limit position for
fully closed damper and it is normal-
ly not necessary to change it.
Low load (orange)
Full load (red)
Closed damper (blue)
Solenoid valve full load (black)
If the air volume needs changing:
Remove the cover of the damper
motor and change the position of the
cams by turning them with the tools
accompanying the burner.