krom schroeder DG B Series Operating Instructions

03251234
D GB F NL I
TR CZ PL RUS H
Operating instructions
Pressure switches for gas
DG..B, DG..U
Cert. version 08.12
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 operator.
This unit must be installed and commissioned in accord-
ance with the regulations and standards in force. These
instructions can also be found at www.docuthek.com.
Explanation of symbols
• , 1 , 2 , 3 ... = 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.
E DK S N P GR
www.docuthek.com
Changes to edition 03.14
The following chapters have been changed:
– Checking the usage
– Certification
Checking the usage
Gas pressure switches DG for monitoring increasing
and decreasing gas or air pressure.
Positive
pressure
Gas, air,
DG..B
flue gas
Gas, air,
DG..U
flue gas
This function is only guaranteed when used within the
specified limits – see page 3 (Technical data). Any
other use is considered as non-compliant.
Type code
Code
DG
6 – 500
B
U Positive pressure/Negative pressure
G
-3
-4
-5
-6
-9
K2 Red/green pilot LED for 24 V DC/AC
T
T2 Red/green pilot LED for 230 V AC
N
S
A
Part designations
2
1
Type label
D-49018 Osnabrück, Germany
DG
CE – 0085AP0467
2
3
1
GB-1
Negative pres- Differential
sure pressure
– –
Air, flue gas Air, flue gas
Description
Pressure switch for gas
Max. setting in mbar
Positive pressure
With gold-plated contacts
Electrical connection
via screw terminals
via screw terminals, IP 65
4-pin plug, without socket
4-pin plug, with socket
4-pin plug, with socket, IP 65
Blue pilot lamp for 230 V AC
Blue pilot lamp for 120 V AC
Only for oxygen and ammonia
External adjustment
1 Upper housing section
with cover
2
Lower housing section
3
3 Hand wheel
4
4 M16 cable gland
Max. inlet pressure =
withstand pressure,
mains voltage, ambient
tempera ture, enclosure:
see type label.