User Manual

3/17
Building Technologies Division CC1N7668en
10.11.2017
Mounting notes
Ensure that the relevant national safety regulations are complied with.

Note!
To adjust, use a TORX T15 screwdriver.
Adjustment of parallel shift for gas / air ratio
1. Check the inlet and outlet pressure using the pressure test points provided
2. Remove the protective cap
3.  Rotate the screw (white color) clock-
wise to increase the outlet pressure
(10 %)
 Rotate the screw (white color) coun-
terclockwise to decrease the outlet
pressure (10 %)
 Ensure that the outlet pressure is cor-
rectly adjusted before replacing the pro-
tective cap
Adjustment of main gas flow throttle
 Rotate the screw (metallic color) clockwise
to increase the gas flow
 Rotate the screw (metallic color) counter-
clockwise to decrease the gas flow
VGUxxS
Only VGU8xS