GWF Unico2coder MP 3/4 User manual

Cold
water
Cold
water
Installation and Operating Instructions
Unico2coder MP ¾“, MTK3coder MP 1“, MTK3coder MP 1½“,
MTW3coder MP 1“, MTW3coder MP 1½“
1. Field of application
Water meters are suited for the measurement of low to middle
flowrates. These instructions contain all important information
for the installation and operation of the above mentioned water
meters. Installation, connection and maintenance must only be
carried out by expert technicians who, first of all, have read and
understood the operating instructions.
2. Sizing of the water meter
Water meters are to be sized according to the relevant rating.
A continuous overload will lead to the water meter being da-
maged. The maximum flow rate may only take place at a ma-
ximum of 1 hour per day and over the life span of the water
meter a maximum of 100 hours summed together. When spe-
cifying the water meter the operating conditions occuring in
the application are to be considered. In particular these are:
■Max. continuous flow rate
■Max. working pressure
■Max. working temperature
■Ambient temperature
■Installation position
3. Installation information
1. Singlejet meters (Unico2) can be installed in horizontal or
vertical pipe lines. Preferential is the installation in horizon-
tal pipe lines. The type plate of singlejet meters (Unico2) can
face upwards or sideways.
Multijet meters (MTK3 / MTW3) can be installed in horizontal
pipe lines. The type plate of multijet meters (MTK3 / MTW3)
must always face upwards.
2. For water meters no inlet and outlet distances must be
adhered to. It is recommended to install the water meter
in a location, that is accessible for reading, service and
inspection.
3. It is recommended to install shut-off valves upstream and
downstream of the water meter, to facilitate the installati-
on and removal of the water meter for periodic inspection
and maintenance work.
With only an upstream shut-off valve installed
■Open slowly the shut-off valve to remove air from the
meter and pipeline
■Open slowly a consumer faucet to allow entrapped air to
escape from pipeline
■Close the consumer faucet
■Observe the meter installation to ensure it is properly
sealed w/o leaks.
With an upstream and downstream shut-off valve installed
■Close the downstream shut-off valve
■Open slowly the upstream shut-off valve
■Observe the meter installation to ensure it is properly
sealed w/o leaks
■Open slowly the downstream shut-off valve
■Open slowly a consumer faucet to allow entrapped air to
escape from pipeline
■Close the consumer faucet
4. It is necessary to purge/rinse the pipeline before initial in-
stallation of the water meter. In place of the water meter a
bypass piece must be installed, so that foreign objects do
not block the strainer of the water meter. Thus, accurate
measurement can be ensured.
5. Pay attention to a stress-free installation of the water
meter and to the direction of flow when installing the water
meter. An arrow on the water meter body indicates the di-
rection of flow.
6. Before installing the water meter check if a clean strainer
is inserted inside the inlet part of the water meter.
7. During installation it is important to check that the inside
of the couplings/unions are clean, intact and correctly po-
sitioned seals/gaskets are used. Whenever a water meter
is removed from the pipe line, discard and replace the old
seals/gaskets. Do not use pipe sealant or Teflon tape on
meter threads.
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973.89 g
141649
336298.63 mm³
Material no.
Elektronic
Unico USA
TBU 04.06.2019
0a
Confidential
Copyright © GWF MessSysteme AG
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issue to third parties in any form whatever is
not permitted without written authority of
GWF MessSysteme AG, CH-6002 Luzern
©
©
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973.89 g
141649
336298.63 mm³
Material no.
Elektronic
Unico USA
TBU
04.06.2019
0a
Confidential Copyright © GWF MessSysteme AG All rights strictly reserved. Reproduction or issue to third parties in any form whatever is not permitted without written authority of GWF MessSysteme AG, CH-6002 Luzern
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1514.83 g
143174
Unico USA Massbilder
29.05.2019
512774.67 mm³
Material no.
Elektronic
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Copyright © GWF MessSysteme AG
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issue to third parties in any form whatever is
not permitted without written authority of
GWF MessSysteme AG, CH-6002 Luzern
Model Unico2 MTK3 MTW3
Nominal pipe size ¾" 1" 1½" 1" 1½"
Connection
on meter (thread)
NPSM 1" 1¼" 2" 1¼" 2"
Max. flow rate gpm 22 55 88 55 88
Max. continuous
flow rate
gpm 11 44 70 44 70
Min. flow rate gpm 0.50 0.75 1.50 0.75 1.50
Max. working temp. °F 194 122 122 194 194
Max. working
pressure
psi 230
Ambient temp. °F +41 to +131
Interface GWFcoder®

8. In order to prevent unauthorized manipulation of the water
meter the couplings/unions can be secured by means of a
wire and seals against tampering.
9. Excessive force when tightening the couplings/unions of
the water meter must be avoided in order to prevent dama-
ge being caused to the housing of the water meter.
10. In order to guarantee correct measurement, it is very im-
portant to ensure that no air can enter the water meter or
that the pipeline is allowed to run dry.
11. With many installations water pipelines serve as earthing
for electrical systems. Depending on the actual application
an electrical bypass of the water meter is to be ensured.
12. The water meter should be protected against mechanical jolts
or vibration, which could be present in the installation place.
13. The pipeline should be securely fastened upstream and
downstream of the water meter.
14. Measures should be taken, so that the water meter is not
damaged by hydraulic influences such as, pressure shocks
and cavitations. Additionally it should be guaranteed that
the water meter is not damaged due to frozen water being
encountered.
15. Signal (Interface GWFcoder®) wiring should never be laid
together with mains power lines and must be indepen-
dently protected. The distance between signal (Interface
GWFcoder®) and mains power line must be a min. di-
stance of 2 Inch.
4. Commissioning
During commissioning and after every time the water meter
has run dry, shut-off valves must be opened slowly in order to
avoid pressure shocks on the water meter.
5. Maintenance and service
Water meters are maintenance free under normal operating
conditions. They excel in that they have a long life span. The
life span essentially depends on the water quality and on the
conditions and capacity of flow. We recommend however to ex-
amine the following points periodically.
1. Before working on the installation, it is to be examined
whether the pressure is relieved in the pipeline.
2. When the water supply is closed, all the pointers of the re-
gister should stopp. When the water supply/inlet is slowly
opened the pointers should begin to turn-over evenly and
slowly.
3. If the supply network is subject to dirty conditions, it is re-
commended, to clean the strainer on the inlet of the water
meter on a regular basis.
4. The stamp on the seal should be verified if it is intact.
5. It should be verified that all shut-off valves upstream and
downstream of the water meters are fully opened, and if
they can be closed and there are no leaks present.
6. The water meter and pipe work of the installation should
be checked for leaks.
7. Check to see that the environment, in which the water me-
ter is installed, is devoid of water, where dripping water
onto the register could lead to water ingress.
8. Pay attention that the water meter connections
are securely attached and that all pipelines are
undamaged and intact.
9. It should be verified that the ambient tempera-
ture lies within the admissible temperature range of the
water meter.
6. Disassembly and disposal
It should be ensured that the water meters are disposed of in
a recycling just manner. The local and national regulations for
environmental protection are to be considered.
7. Safety guidelines
1. The water meters should always be handled only on the
water meter housing and should not be carried by either
the lid or communication cable.
2. The devices may only be used for the intended purpose.
GWF MessSysteme AG guarantees in the context of the
general trading conditions the quality of its products. The
responsibility for the correct installation as well as profes-
sional handling falls within the scope and receipt of goods
on the owner or operator.
8. Interface GWFcoder®
Unico2coder MP, MTK3coder MP, MTW3coder MP
Multi Protocol Interface
M-Bus (MP) Wired M-Bus acc. EN 13757
(wire length up to 3280 feet)
The polarity of the connecting wires makes no difference (polartity
insensitive)
ECO (MP) Low power interface
(wire length up to 50 feet)
The polarity of the connecting wires must be observed
Unico2coder MP, MTK3coder MP, MTW3coder MP
SUS Sensus protocol (3-wires)
The polarity of the connecting wires must be observed
9. Radio module
Unico2coder MP, MTK3coder MP, MTW3coder MP
Frequency 915 MHz: max. 20 dBm (100 mW)
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Part no.
GWF MessSysteme AG, CH-6002 Luzern
swiss.smart.simple.
Approved
Checked
Name Date
Material
Drawn
Doc no.
Scale
1:1
Description
Weight Volume
Color
1514.83 g
143174
Unico USA Massbilder
29.05.2019
512774.67 mm³
Material no.
Elektronic
0a
Confidential
Copyright © GWF MessSysteme AG
All rights strictly reserved. Reproduction or
issue to third parties in any form whatever is
not permitted without written authority of
GWF MessSysteme AG, CH-6002 Luzern
sheet -1 of 2 / A2
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in process
Name
Date
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Index
Part no.
GWF MessSysteme AG, CH-6002 Luzern
swiss.smart.simple.
Approved
Checked
Name Date
Material
Drawn
Doc no.
Scale
1:1
Description
Weight Volume
Color
1514.83 g
143174
Unico USA Massbilder
29.05.2019
512774.67 mm³
Material no.
Elektronic
0a
Confidential
Copyright © GWF MessSysteme AG
All rights strictly reserved. Reproduction or
issue to third parties in any form whatever is
not permitted without written authority of
GWF MessSysteme AG, CH-6002 Luzern

10. Conformity in California
NTEP Conformity only with local county wire seal.
11. Safety information about radio
1. Changes or modifications not expressly approved by the
manufacturer could void the user‘s authority to operate the
equipment.
2. This device complies with Part 15 of the FCC rules. Ope-
ration is subject to the following two conditions: (1) This
device may not cause harmful interference, and (2) this de-
vice must accept any interference received, including inter-
ference that may cause undesired operation.
3. This device must be installed to provide at least 20 cm
separation from the human body at all times.
4. This equipment has been tested and found to comply with
the limits for a Class B digital device, pursuant to Part 15
of the FCC Rules. These limits are designed to provide re-
asonable protection against harmful interference in a re-
sidental installation. This equipment generates uses and
can radiate radio frequency energy and, if not installed and
used in accordance with the instructions, may cause harm-
ful interference to radio communications. However, there
is no guarantee that interference will not occur in a par-
ticular installation. If this equipment does cause harmful
interference to radio or television reception, which can be
determined by turning the equipment off and on, the user
is encouraged to try to correct the interference by one of
the following measures: Reorient or relocate the receiving
antenna / Increase the separation between the equipment
and receiver / Connect the equipment into an outlet on a
circuit different from that to which the receiver is connected
/ Consult the dealer or an experienced radio/TV technician
for help.

30.09.2022 – BAe10105
Technical support:
T [phone], [email protected]
T [phone]
[email protected], www.gwf.ch
GWF MessSysteme AG
Obergrundstrasse 119
6005 Lucerne, Switzerland
Subject to modication,