Idiomas disponibles
Idiomas disponibles
MD 1770
Installation instructions for velocity water meters
Supplied Material:
Each package contains:
- Water meter
- Optional connection kits if ordered
General Instructions:
Please read this guide prior to installing the water meter.
The water meter is designed for use with potable water
for residential activities. The meters must be stored in
a dry, cool place, free of contamination. Please make
sure that during installation all hygienic standards and
recommendations are respected.
NOTE:
These installation instructions apply to velocity water
meters. Velocity meters with mechanical register can
be installed like shown in picture 12. Due to the risk of
damaging the gears in the register a top down installation
is not allowed.
Permissible Operating Conditions
• Cold water meter 120, 120C, 412 family, 420 family,
ResidiaJet family, 820: 0.1°C ... 50 °C
• Warm water meter 120, 120C, ResidiaJet family: 30 °C
... 90 °C
• Pressure stage: from 0,3 bar (0,03 MPa) to 16 bar
MPa)
• Mechanical environment: M2 (MID) fixed installation
with significant or high levels of vibration and shock
• Climatic environment:
- 120, 120C, 412 family, 820, ResidiaJet, ResidiaJet-C:
5 °C ... 70 °C
- 420 family: -10 °C .... 55 °C
• Meters have to be installed in a stress free condition
Please also note the directions in accordance with:
• ISO 4064-5:2017 (installation requirements)
• DIN 1988-200 (TRWI-planning and implementation,
components, ...)
Meters must be installed grounded and tension free,
without any mechanical stress on water pipes. For this we
recommend installing meters using a metal meter bracket
with length compensation fittings (thread dimension acc.
EN ISO 228-1:200 Class B). In cases where the installation
site is not prepared with these brackets, we recommend
the permanent use of a potential compensator ("grounding
kit"). This will prevent serious accidents during installation
and operation due to hazardous leakage currents.
The accessory grounding kit is also available for purchase
from Sensus.
The meter
does not need any straight upstream or
downstream pipe (U0D0).
STEP 1:
Before uninstalling the old meter first close outlet valve at
output, then close inlet valve!
Thoroughly flush pipe to prevent contamination of the new
meter with dirt, sediments and/or particulates.
The infiltration of dirt, sediments and/or particles into the
meter may damage it and prevent it from operating correctly.
1 Use new sealing washers.
2 Install the meter in the correct flow direction. Please
note that the connection threads may be sharp-edged.
STEP 2:
Connect meter on one side with the unions
3 Use your hands to fasten the unions! Then use key.
STEP 3:
Finalizing meter connection
4 Prevent rotation of the meter while tightening unions.
5 Repeat process for the remaining connection as
described in pictures 1-2-3-4. Then tighten the unions with
a wrench.
6 Turn register in proper position for optimum readout
(only possible 120 and 120C).
(1,6
STEP 4:
First filling
7 Inlet side: slowly open the inlet valve.
8 Check for leaks.
9 Outlet side: slowly open the outlet valve.
Improper first filling may lead to water hammer or
measuring
insert
overspeeding
damage the meter and prevent it from operating
correctly.
Note:
10 When using a non return valve (NRV) please use
the appropriate gaskets depending on the shape of the
connection pipe. It is not possible to use a NRV with 120
and 120C.
11 Water meters are conformity assessed or calibrated
measuring instruments. Exposing them to hard shock or not
protecting them against freezing can cause irreparable
damage. Exposure to excessive heat can damage the
meter.
12 Orientation of the display.
2 2 2
1
4
5
7
8
12
which
can
412 family
4
420 family
4
820
120, 120C
4
3
10
6
11
9
8
8
8
4
4
8
4
4
8
EN
ENGLISH
DE
FR
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IT
NL
PL
CZ
SK
RO
SV
FI
4
8
4
8
4
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