5.7.1 Check pressure in the combustion cylinder
(safety check during commissioning)
!
WARNING
The settings must only be changed by a spe-
cialist trained by Hoval or by Hoval customer
service.
1. Slightly loosen top screw on pressure switch B17
(connection point for the measurement).
B17
B18
2. Connect manual pressure measurement device to
pressure switch B17 and measure pressure.
3. Check whether the factory settings are suitable for
the local conditions:
- Compare measured value with the nominal meas-
ured value in the following table (deviation toler-
ance of the two values: ±10 %).
UltraGas
®
type
Factory setting
Nominal
measured
value
Pressure switch
B17
Pressure switch
B18
(125)
2.9 mbar
2.1 mbar
4 mbar
(150)
4.1 mbar
2.7 mbar
5 mbar
(200)
1.5 mbar
1.2 mbar
2 mbar
(250)
2.3 mbar
1.5 mbar
3 mbar
(300)
3.1 mbar
2.1 mbar
4 mbar
(350)
2.9 mbar
2.1 mbar
4 mbar
(400)
5 mbar
4 mbar
7.5 mbar
(450)
7 mbar
5 mbar
10 mbar
(500)
8.4 mbar
6 mbar
12.5 mbar
(575)
10.7 mbar
7 mbar
15 mbar
(650)
13.8 mbar
9 mbar
20 mbar
(720)
12.7 mbar
9 mbar
20 mbar
(850)
6.7 mbar
5 mbar
10 mbar
(1000)
9.5 mbar
7 mbar
15 mbar
(1150)
10.7 mbar
7 mbar
15 mbar
4. Disassemble manual pressure measurement device.
5. Tighten upper screw on pressure switch B17.
6. Correct pressure switch B17 or B18 settings if nec-
essary:
- Calculate setting value of the pressure switch and
compare with the setting position of the dial:
- Pressure switch B17 setting value:
Measured value x 0.6
Example: 5.29 mbar x 0.6 = 3.17 mbar
- Pressure switch B18 setting value:
Measured value x 1.4
Example: 5.29 mbar x 1.4 = 7.40 mbar
- Disassemble pressure switch cover.
- Set the pressure switch setting value so that the
outward-facing arrow points to the calculated set-
ting value.
- Assemble pressure switch cover.
37
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COMMISSIONING
Содержание UltraGas 1000
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