Krom Schroder VAS Series, Operating Instructions Manual, Page: 1 / 16

DK S N P GR
➔
www.docuthek.com
D GB F NL I E
TR CZ PL RUS H
Cert. version 07.19
© 2019 Elster GmbH · Edition 07.19
Safety
Please read and keep in a safe place
Please read through these instructions
carefully before installing or operating. Following the
installation, pass the instructions on to the opera-
tor. This unit must be installed and commissioned
in accordance with the regulations and standards
in force. These instructions can also be found at
www.docuthek.com.
Explanation of symbols
• , 1 ,  , 
... = Action
▷
= Instruction
Liability
We will not be held liable for damage resulting from
non-observance of the instructions and non-com-
pliant use.
Safety instructions
Information that is relevant for safety is indicated in
the instructions as follows:
DANGER
Indicates potentially fatal situations.
WARNING
Indicates possible danger to life and limb.
CAUTION
Indicates possible material damage.
All interventions may only be carried out by qualified
gas technicians. Electrical interventions may only be
carried out by qualified electricians.
Conversion, spare parts
All technical changes are prohibited. Only use OEM
spare parts.
Changes to edition 10.17
The following chapters have been changed:
– Installation
– Accessories
– Technical data
– Safety instructions
– Logistics
– Certification
Contents
Operating instructions
D
GB
F
NL
I
E
GB-1
050
Translation from the German
Solenoid valve for gas VAS 1 – ,
double solenoid valve VCS 1 – 
Solenoid valve for gas VAS 1 – ,
double solenoid valve VCS 1 – . . . . . . . . . . . 1
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Checking the usage . . . . . . . . . . . . . . . . . . . . . 
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Tightness test . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Commissioning. . . . . . . . . . . . . . . . . . . . . . . . . 6
Replacing the actuator . . . . . . . . . . . . . . . . . . 6
Replacing the damping unit . . . . . . . . . . . . . . 8
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Pressure switch for gas DG..VC. . . . . . . . . . . . . 9
Bypass/pilot gas valves . . . . . . . . . . . . . . . . . . . 9
Checking the bypass/pilot gas valve for
tightness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Tightness control TC 1V . . . . . . . . . . . . . . . . . . 11
Cable gland set for double solenoid valves. . . . 12
Attachment block. . . . . . . . . . . . . . . . . . . . . . . 12
Seal set for sizes 1 – 3 . . . . . . . . . . . . . . . . . . . 13
Cable gland with pressure equalization
element . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Technical data . . . . . . . . . . . . . . . . . . . . . . . . 1
Air flow rate Q. . . . . . . . . . . . . . . . . . . . . . . . . 14
Safety information in accordance with
EN 61508- . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Designed lifetime . . . . . . . . . . . . . . . . . . . . . . 15
Logistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Certification . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Safety
Contents