Honeywell Krom Schroder DG H Series User manual

DK S N P GR
➔www.docuthek.com
D GB F NL I E
TR CZ PL RUS H
Cert. version 08.19
© 2019 Elster GmbH · Edition 08.19
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 11.17
The following chapters have been changed:
– Adjustment
– Technical data
– Logistics
– Certification
Contents
Operating instructions
D
GB
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NL
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GB-1
0517
Translation from the German
Pressure switches for gas
DG..H, DG..N
Pressure switch for gas DG..I
Pressure switches for gas
DG..H, DG..N
Pressure switch for gas DG..I .............1
Contents ..............................1
Safety.................................1
Checking the usage .....................
Type code .............................2
Part designations ........................2
Type label..............................2
Installation ............................
Connection facilities ......................3
Installing DG..H, DG..N ...................3
Installing DG..I ..........................3
Wiring ................................4
Adjustment ............................5
Tightness test ..........................5
Maintenance ...........................5
Accessories ...........................5
Technical data .........................7
Designed lifetime ........................8
Logistics ..............................8
Certification ...........................8
Declaration of conformity ..................8
Contact ...............................8
Safety
Contents

GB-2
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Checking the usage
DG..H, DG..N, DG..I
For monitoring increasing and decreasing gas or
air pressure.
-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6
Increasing
negative pressure
Decreasing
negative pressure
Increasing pressure
Decreasing pressure
Positive pressure Negative pressure
DG..H,
DG..N Gas, air, flue gas Air, flue gas
DG..I Air, flue gas Gas, air, flue gas
DG..H switches and locks off with rising pressure,
DG..N switches and locks off with falling pressure.
They can be unlocked using the manual reset.
This function is only guaranteed when used within
the specified limits– see page7 (Technical data).
Any other use is considered as non-compliant.
Type code
Code Description
DG Pressure switch for gas
1,5 – 500 Max. setting in mbar
H
N
I
Locks off with rising pressure
Locks off with falling pressure
Negative pressure for gas
GWith gold-plated contacts
-
-4
-5
-6
-9
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
K
T
T
N
Red/green pilot LED for 24 V DC/AC
Blue pilot lamp for 230 V AC
Red/green pilot LED for 230 V AC
Blue pilot lamp for 120 V AC
AExternal adjustment
Part designations
1
2
3
5
4
1Upper housing section with cover
Lower housing section
Hand wheel
4M16 cable gland
5DG..H, DG..N with manual reset
Type label
DG
2
13
D-49018 Osnabrück, Germany
CE
Max. inlet pressure pmax. = withstand pressure, mains
voltage, ambient temperature, enclosure: see type
label.
Installation
CAUTION
Please observe the following to ensure that the DG
is not damaged during installation and operation:
– Continuous operation with gases containing more
than 0.1 %-by-vol. H2S or ozone concentrations
exceeding 200µg/m³ accelerate the ageing of
elastomer materials and reduce the service life.
– Dropping the device can cause permanent dam-
age. In this event, replace the entire device and
associated modules before use.
– Use approved sealing material only.
– Check max. ambient temperature – see
page7 (Technical data).
– When using silicone tubes, only use silicone
tubes which have been sufficiently cured.
– Vapours containing silicone can adversely affect
the functioning of electrical contacts.
– Condensation must not be allowed to get into
the housing. At subzero temperatures, malfunc-
tions/failures due to icing can occur.
– When installing outdoors, place the DG in a
roofed area and protect from direct sunlight
(even IP65 version). To avoid condensation, a
cover with pressure equalization element (see
page 6 (Pressure equalization element)) can
be used.
–Avoid strong impact on the unit.
– In case of highly fluctuating pressures, install
a restrictor orifice (see page 6(Restrictor
orifice)).
▷
The DG must not be in contact with masonry.
Minimum clearance 20mm.
▷Ensure that there is sufficient installation space.
▷Ensure unobstructed view of the hand wheel.
▷Installation position as required, preferably with
vertical diaphragm. Then the switching pointpS
corresponds to the scale valueSK set on the
hand wheel. In other installation positions, the
switching pointpSwill change and no longer
correspond to the scale valueSK set on the
hand wheel. Check the switching point.

GB-3
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DG..H, DG..N
pS= SK pS= SK + 0.18 mbar pS= SK - 0.18 mbar
DG 1,5I
pS= SK
pS= SK + 0.4 mbar
e.g. SK = 1.2:
pS= 1.2 + 0.4 =
1.6 mbar
e.g. SK = -1.2:
pS= -1.2 + 0.4 =
-0.8 mbar
DG 12I
pS= SK
pS= SK + 0.5 mbar
e.g. SK = 5:
pS= 5 + 0.5 =
5.5 mbar
e.g. SK = -10:
pS= -10 + 0.5 =
-9.5 mbar
DG 18I, DG 120I, DG 450I
pS= SK
DG 18I:
pS= SK + 0.5 mbar
e.g. SK = -10:
pS= -10 + 0.5 =
-9.5 mbar
DG 120I, DG 450I:
pS= SK + 0.2 mbar
Connection facilities
2
1
3
4
1 and 2
Gas, air, flue gas
3 and 4
Air, flue gas
▷ Portsand 4are suitable for air and flue gas only.
▷ If the electrical contacts in the DG could be soiled
by dirt particles in the surrounding air or in the
medium, use a filter pad (see page 6 (Filter
pad set)) at port/4. On IP65 units, the filter pad
is fitted as standard, see type label.
1 Disconnect the system from the electrical power
supply.
 Shut off the gas supply.
 Ensure that the pipeline is clean.
4 Purge the pipe.
Installing DG..H, DG..N
Positive pressure measurement at port1
5 Seal port.
1
2
Rp 1/4
1
2
pmax =
Rp 1/4
2Rp 1/4
0
Positive pressure measurement at port
5 Seal port1.
1
2
Rp 1/4
1
2
pmax =
Rp 1/4
2Rp 1/4
0
Negative pressure measurement at port4
5 Seal port.
3
Rp 1/8 4
3
4
Rp 1/8
3
0
Negative pressure measurement at port
5 Seal port4.
3
Rp 1/8 4
3
4
Rp 1/8
3
0
Differential pressure measurement
▷Use port 1or for the higher absolute pressure
and port or 4for the lower absolute pressure.
5 Seal the remaining ports.
1
3
3
1
Installing DG..I
▷
It is recommended that the port which is best
protected from dirt and water be left open.

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Negative pressure measurement at port1
5 Seal port.
1
2
Rp 1/4
1
2
pmax =
Rp 1/4
2Rp 1/4
0
–
–
Negative pressure measurement at port
5 Seal port1.
1
2
Rp 1/4
1
2
pmax =
Rp 1/4
2Rp 1/4
0
–
–
Wiring
▷If the DG..G has switched a voltage > 24 V and
a current > 0.1 A at cos φ = 1 or > 0.05 A at
cos φ = 0.6 once, the gold plating on the con-
tacts will have been burnt through. It can then
only be operated at this power rating or higher
power rating.
▷ Pressure switch DG can be used in Zone 1
(21) and 2 (22) hazardous areas if an isolating
amplifier is installed upstream in the safe area
as “Ex-i” apparatus pursuant to EN 60079-11
(VDE 0170-7):2012.
▷DG as “simple electrical apparatus” pursuant to
EN 60079-11:2012 corresponds to the Tempera-
ture class T6, Group II. The internal inductance/
capacitance is Li = 0.2μH/Ci = 8 pF.
CAUTION
To ensure that the DG is not damaged during opera-
tion, note the switching capacity, see page 7
(Technical data).
▷In the case of low switching capacities, such as
24V, 8mA, for example, we recommend using
an RCmodule (22Ω, 1μF) in air containing
silicone or oil.
NO
C = 1 µF R = 22
2
NC
1
COM
3
1 Disconnect the system from the electrical power
supply.
M16 x 1,5:
ø 4–10 mm
3 42
5 6 7
▷ Contacts and close when subject to increas-
ing pressure. Contacts 1and close when sub-
ject to falling pressure.
COM
3
NC
1
NO
2
NO
2
NC
1
COM
3
L1
DG 1,5I and DG 1I
▷The connection of DG 1,5l and DG 12l depends
on the positive or negative adjusting range.
DG 12I DG 1,5I
-
1
2
-
1
1
-
1
0
-
9
-
8
-
7
-
6
-
5
- 4
-
3
-
2
-
1
1
2
3
4
5
6
7
1
0
0
P
a
=
1
m
b
a
r
p
s
=
-
1
2
–
-
1
;
1
–
7
m
b
a
r
-
1
,
5
-
1
-
0
,
5
0
,
5
1
1
,
5
2
2
,
5
3
p
s
=
-
1
,
5
–
-
0
,
5
;
0
,
5
–
3
m
b
a
r
1
0
0
P
a
=
1
m
b
a
r
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
▷ In the negative adjusting range, the template
which can be found in the unit displays the con-
nection diagram.
NC 1
COM
COM
N
3
3
NO
2
NC
1
NO
µ
2
▷In the positive adjusting range, remove the tem-
plate and wire the unit as shown in the engraved
connection diagram.
NO
2
NC
1
COM
3

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Adjustment
▷ The switching point is adjustable via hand wheel.
1 Disconnect the system from the electrical power
supply.
 Detach the housing cover, see page7 (Tech-
nical data).
 Connect an ohmmeter.
NO
2
NC
1
COM
3
COM
3
NC
1
NO
2
0
1 cm = 1 mbar
4 Set the switching point using the hand wheel.
5 Connect a pressure gauge.
NO
2
NC
1
COM
3
COM
3
NC
1
NO
2
0
1 cm = 1 mbar
6 Apply pressure. In doing so, monitor the switch-
ing point on the ohmmeter and the pressure
gauge.
Type
Adjusting
range*
[mbar]
Reset
pressure**
[mbar]
Max. inlet
pressure
pmax. [mbar]
DG 10H,
DG 10N 1 – 10 0.4 – 1
600
DG 50H,
DG 50N 2.5 – 50 1 – 2
DG 150H,
DG 150N 30 – 150 2 – 12
DG 500H,
DG 500N 100 – 500 5 – 18
Type
Adjusting
range*
[mbar]
Switching
differential***
[mbar]
Max. inlet
pressure
pmax. [mbar]
DG 1,5I
-1.5 to -0,5
and
+0.5 to +3
0.2 – 0.5 ±100
DG 12I
-12 to -1
and
+1 to +7
0.5 – 1 ±100
DG 18I -2 to -18 0.5 – 1.5 ±100
DG 120I -10 to -120 4 – 11 ±600
DG 450I -80 to -450 10 – 30 ±600
* Adjusting tolerance = ± 15% of the scale value.
** Difference between switching pressure and pos-
sible reset.
*** Mean switching differential at min. and max. set-
ting.
▷ Deviation from the switching point during testing
pursuant to EN1854:
Gas pressure switches: ± 15%.
Air pressure switches:
Deviation
DG..H, ..N, ..I ± 15%
DG 1,5I ± 15% or ± 0.4 mbar
DG 12I ± 15% or ± 0.5 mbar
DG 18I ± 15% or ± 0.5 mbar
▷
If the DG does not trip at the desired switch-
ing point, correct the adjusting range using the
hand wheel. Relieve the pressure and repeat
the process.
Tightness test
1 Shut off the downstream gas pipeline close to
the valve.
 Open the valve and the gas supply.
▷Check all used ports for tightness.
N2
900 mbar
max. 2 bar
< 15 min
3 4
Maintenance
In order to ensure smooth operation: check the tight-
ness and function of the DG every year, or every six
months if operated with biogas.
▷A function check can be carried out in case of
decreasing pressure control e.g. with the PIA.
▷After carrying out the maintenance work, check
for tightness, see page5 (Tightness test).
Accessories
Connecting set
For monitoring a minimum and maximum inlet pres-
sure puwith two pressure switches attached to one
another.
Order No.: 74912250
1
2
3
2
2
1
1
4
1
Remove from
both pressure
switches.
Install on one
pressure
switch.

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Filter pad set
To protect the electrical contacts in the DG from dirt
particles in the surrounding air or in the medium, use
a filter pad at the 1/8" negative pressure port. As
standard on IP 65 units.
5-piece filter pad set, Order No.: 74916199
Weather protection cover
Protection against condensation and weathering.
Order No.: 74924909.
Further information can be found in Technical Infor-
mation bulletin DG (D, GB, F) – www.docuthek.com.
External adjustment
In order to set the switching pressure from the outside,
the cover for external adjustment (6mm Allen key)
for DG..I can be retrofitted.
Order No.: 74916155
2 31
Pressure equalization element
To avoid the formation of condensation, the cover
with pressure equalization element can be used. The
diaphragm in the screw connector is designed to
ventilate the cover, without allowing water to enter.
Order No.: 74923391
Restrictor orifice
In the case of high pressure fluctuations, we recom-
mend using a restrictor orifice (contains non-ferrous
metals).
R
¼
Rp
¼
Hole diameter 0.2 mm, Order No.: 75456321,
hole diameter 0.3 mm, Order No.: 75441317.
Test key PIA
To test the min. pressure switch, the DG can be
vented in its switched state using the PIA test key
(contains non-ferrous metals).
Click
TEST
R
¼
Rp
¼
Order No.: 74329466
Tube set
To be used with air only.
Order No.: 74912952
Fastening set with screws, U-shape bracket
M4 x 10
M4 x 12
50 (1.97")
47,5 (1.87")
75 (2.95")
30 (1.18")
20
(0.79")
25 (0.98")
45 (1.77")
20
(0.79")
24 (0.94")
43 -0,3 (1.69")
64 (2.52")
40 (1.57")
6 (0.24")
16
(0.63")
39 (1.53")
4,20 +0,1
(0.17")
5,2
(0.2") 10
(0.4")
Order No.: 74915387

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Standard socket set
1
3
2
L1
N
N
NO
NO
12
COM
L1
3333333
3
Order No.: 74915388
Standard coupler plug
Order No.: 74920412
Pilot lamp set, red or blue
Pilot lamp, red:
110/120 V AC, I = 1.2 mA, Order No.: 74920430;
220/250 V AC, I = 0.6 mA, Order No.: 74920429.
Pilot lamp, blue:
110/120 V AC, I = 1.2 mA, Order No.: 74916121;
220/250 V AC, I = 0.6 mA, Order No.: 74916122.
2 31
4
NC
1
COM
3
NO
NO 2
N
NO
2
NC
1
COM
3
L1
N
NC
1
COM
3
NO
NC
2
N
NO
2
NC
1
COM
3
L1
N
LED set, red/green
24 V DC, I = 16 mA; 24 V AC, I = 8 mA,
Order No.: 74921089;
230 V AC, I = 0.6 mA, Order No.: 74923275.
2 31
4
NC
1
COM
3
NO
2
N
NO
21 NC
3 COM
+
–
Technical data
Ambient conditions
Maximum medium, ambient and transport tem-
peratures:
DG..H, DG..N: -15 to +60°C,
DG..I: -20 to +80°C.
Storage temperature: -20 to +40°C.
Long-term use in the upper ambient temperature
range accelerates the ageing of the elastomer ma-
terials and reduces the service life (please contact
manufacturer).
Enclosure: IP54 or IP65. Safety class: 1.
This unit is not suitable for cleaning with a high-
pressure cleaner and/or cleaning products.
Mechanical data
Gas type: natural gas, town gas, LPG (gaseous),
flue gas, biogas (max. 0.1%-by-vol. H2S) and air.
Max. inlet pressure pmax. = withstand pressure,
see page5 (Adjustment).
Max. test pressure for testing the entire system:
temporarily (<15minutes) 2bar.
Diaphragm pressure switch, silicone-free.
Diaphragm: NBR.
Housing: glass fibre reinforced PBT plastic with
low gas release.
Lower housing section: AlSi 12.
Max. tightening torque, see Technical Information
DG (D, GB, F) – www.docuthek.com.
Weight: 270 to 320g depending on equipment.
Electrical data
Switching capacity:
U I (cos φ = 1) I (cos φ = 0.6)
DG
24 – 250 VAC 0.05 – 5 A 0.05 – 1 A
DG..G 5 – 250 VAC 0.01 – 5 A 0.01 – 1 A
5 – 48 V DC 0.01 – 1 A
Conductor diameter: 0.5 to 1.8 mm
(AWG24 to AWG13).
Line entrance: M16x1.5, clamping range: diam-
eters of 4 to 10mm. Type of connection: screw
terminals.

GB-8
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Contact
If you have any technical questions, please contact
your local branch office/agent. The addresses are
available on the Internet or from ElsterGmbH.
We reserve the right to make technical modifications
in the interests of progress.
Elster GmbH
Strotheweg 1, D-49504 Lotte (Büren)
Tel. [phone]
Fax [phone]
[email protected], www.kromschroeder.com
Designed lifetime
This information on the designed lifetime is based on
using the product in accordance with these operating
instructions. Once the designed lifetime has been
reached, safety-relevant products must be replaced.
Designed lifetime (based on date of manufacture) in
accordance with EN13611, EN1854 for pressure
switches:
Medium Designed lifetime
Switching cycles Time [years]
Gas 50,000 10
Air 250,000 10
You can find further explanations in the applica-
ble rules and regulations and on the afecor web-
site (www.afecor.org).
This procedure applies to heating systems. For
thermoprocessing equipment, observe local regu-
lations.
Logistics
Transport
Protect the unit from external forces (blows, shocks,
vibration).
Transport temperature: see page 7 (Technical
data).
Transport is subject to the ambient conditions de-
scribed.
Report any transport damage on the unit or packag-
ing without delay.
Check that the delivery is complete, see page2
(Part designations).
Storage
Storage temperature: see page7 (Technical data).
Storage is subject to the ambient conditions de-
scribed.
Storage time: 6 months before using for the first time.
If stored for longer than this, the overall service life will
be reduced by the corresponding amount of extra
storage time.
Packaging
The packaging material is to be disposed of in ac-
cordance with local regulations.
Disposal
Components are to be disposed of separately in
accordance with local regulations.
Certification
Declaration of conformity
We, the manufacturer, hereby declare that the product
DG with product ID No. CE-0085AP0467 complies
with the requirements of the listed Directives and
Standards.
Directives: 2014/35/EU – LVD, 2014/30/EU – EMC,
2011/65/EU – RoHS II, 2015/863/EU – RoHS III
Regulation: (EU) 2016/426 – GAR
Standards: EN 1854:2010
The relevant product corresponds to the tested type
sample.
The production is subject to the surveillance proce-
dure pursuant to Regulation (EU) 2016/426 AnnexIII
paragraph 3.
Elster GmbH
Scan of the Declaration of conformity (D, GB) – see
www.docuthek.com
SIL, PL
Safety-specific characteristic values, see Safety
manual/Technical Information DG (D, GB, F) –
www.docuthek.com
RoHS compliant, Eurasian Customs Union,
AGA approved
AGA
Directive on the restriction of the use of
hazardous substances (RoHS) in China
Scan of the Disclosure Table China RoHS2 – see
certificates at www.docuthek.com
Contact