Krom Schroder DG**H series Operating Instructions Manual

Pressure switches for gas
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057 · Edition 08.
D
GB
F
NL
I
TR
CZ
PL
RUS
H
 
Operating instructions
Pressure switches for gas
DG..H, DG..N
Pressure switch for gas DG..I
Translation from the German
© 2012 Elster GmbH
Contents
Contents
Pressure switches for gas DG..H, DG..N
Pressure switch for gas DG..I . . . . . . . . . . . . . 
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Checking the usage . . . . . . . . . . . . . . . . . . . . . 
Part designations . . . . . . . . . . . . . . . . . . . . . . . . 2
Type label. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Connection facilities . . . . . . . . . . . . . . . . . . . . . . 3
Installing DG..H, DG..N . . . . . . . . . . . . . . . . . . . 3
Installing DG..I . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Tightness test . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Technical data . . . . . . . . . . . . . . . . . . . . . . . . . 7
Designed lifetime . . . . . . . . . . . . . . . . . . . . . . . . 8
Declaration of conformity . . . . . . . . . . . . . . . . 8
Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
E
DK
S
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P
GR
www.docuthek.com
Safety
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
• ,  ,  ,  ... = Action
= Instruction
Liability
We will not be held liable for damages resulting
from non-observance of the instructions and non-
compliant 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.
Transport
On receipt of the product, check that the delivery is
complete (see Part designations). Report any trans-
port damage immediately.
Storage
Store the product in a dry place. Ambient tempera-
ture: see Technical data.
GB-1

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Summary of Contents for Krom Schroder DG**H series

  • Page 1: Table Of Contents

    Safety Safety 057 · Edition 08. Please read and keep in a safe place www.docuthek.com   Please read through these instructions Operating instructions carefully before installing or operating. Following the Pressure switches for gas installation, pass the instructions on to the opera- DG..H, DG..N tor.
  • Page 2: Checking The Usage

    Type label Checking the usage DG..H, DG..N, DG..I For monitoring increasing and decreasing gas or D-49018 Osnabrück, Germany air pressure. Increasing CE – 0085AP0467 negative pressure Increasing pressure Decreasing negative pressure Decreasing pressure -6 -5 -4 -3 -2 -1 0 1 Positive Negative Differential...
  • Page 3: Connection Facilities

    Rp 1 600 m Positive pressure measurement at port  5 Seal port . DG..H, DG..N = SK = SK + 0.18 mbar p = SK - 0.18 mbar DG 18I = SK = SK - 0.5 mbar DG 120I, DG 450I Rp 1/4 600 mbar Rp 1/4...
  • Page 4: Installing Dg

    Installing DG..I  Disconnect the system from the electrical power ▷ It is recommended that the port which is best supply. protected from dirt and water be left open. Negative pressure measurement at port  5 Seal port . Rp 1/4 – -600 mbar Rp 1/4 –...
  • Page 5: Adjustment

    Adjustment Tightness test ▷ The switching point is adjustable via hand wheel.  Shut off the downstream gas pipeline close to  Disconnect the system from the electrical power the valve. supply.  Open the valve and the gas supply. ▷...
  • Page 6 External adjustment Fastening set with screws, U-shape bracket In order to set the switching pressure from the outside, 4 7 , 5 the cover for external adjustment (6 mm Allen key) . 9 5 " ) ( 1 . 8 7 5 ( 2 7 "...
  • Page 7: Technical Data

    Standard coupler plug Order No.: 74920412 Pilot lamp set, red or blue 3 COM 1 NC – Technical data Pilot lamp, red: Gas type: natural gas, town gas, LPG (gaseous), 110/120 V AC, I = 1.2 mA, Order No.: 74920430; flue gas, biologically produced methane (max.
  • Page 8: Designed Lifetime

    Designed lifetime Declaration of conformity The Pressure Equipment Directive (PED) and the Energy Performance of Buildings Directive (EPBD) demand regular checks on and maintenance of heat- ing systems in order to ensure a high level of use in the long term, a clean method of operation and We, the manufacturer, hereby declare that the product safe function.

This manual is also suitable for:

Dg**n seriesDg**i series

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