26
Start-up
Adjustment
Combination controls CG 15 -30
Adjustment
After fitting, the governor must bechek-
ked for proper functioning in con-
junction with the gas consuming
installation, because the governorset-
point set at the factory might notbe the
same as the setpoint requiredfor the
gas consuming installation.
- The scale readings are approximate.
- All adjustments are to be carriedout
with a 2.5 mm!
Governor CG..D1
The gas outlet pressure p
G
can beset
from
1 to 20 mbar (standard) or
4 to 50 mbar (CG..-50),being pre-set at
the factory to: p
G
=10 mbar.
Pre-setting:
• Measure gas pressure p
G
at testpoint
B.
• Set gas pressure at p
G
in accord-ance
with the burner manufacturer’sspecifi-
cations and flue gas analysis.
• Set pressure switch for gas (seebe-
low).
• Close off all test points.
Testing contol capacity
Set burner to high fire.
Measure gas pressure at A and B.
Slowly close manual valve up-stream of
the combination controluntil the gas
inlet pressure at Adrops by 2 mbar.
- The gas outlet pressure at Bshould
not drop by more than10%. Other-
wise, the settingshould be re-checked
and ad-justed.If the control capacity is
insuffi-cient, the device may not
beoperated.
- Open manual valve.
12/2011 14 072 205
Summary of Contents for Low-NOx N10.12000.30 G-EU2
Page 33: ...34 Manufacturer s declaration...
