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SensoStar A
4.5 Installation of
The multi-jet flow sensor type MSH-A1 has an M77x1,5 thread as described in EN ISO 4064-4 / EN 14154-2 (A1;
interface for Allmess / Itron heat meters) and must be installed without a conversion adapter.
Mounting the flow sensor type MSH-A1 in a single pipe connection piece
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Flush the pipes professionally, taking care not to damage any system components. Then close all the shut-
off valves. Open the nearest draining valve for pressure release.
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Drain the closed-off pipe section.
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Take into account the direction of flow (check the connection piece)!
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Remove the overflow flange or the old heat meter from the connection piece using a wrench.
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If a plastic adapter was mounted together with the old meter, it must also be removed.
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Check sealing surfaces and threads for imperfections or dirt. If necessary, debur or clean with a suitable
cleaning liquid.
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Lubricate the external thread (M77x1,5) of the flow sensor and the O-ring (66,35x2,62) with a thin layer of
food safe silicon grease.
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Screw in the heat meter tightly by hand and then tighten additionally with a suitable wrench to the
mechanical end stop (metal-to-metal).
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Rotate the calculator to the best position for read-out, or detach it and mount it nearby.
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Use the enclosed numbered adhesive seal to seal the connection piece by sticking the seal on both
connection piece and flow sensor so that they are connected with each other (required to protect against
manipulation). The added bar code label can be used for the purpose of documentation.
Attention!
When installing, ensure correct positioning regarding the flow by paying attention to the directional arrows on
the connection piece and on the bottom of the plastic adapter. Also, make sure that the blind hole in the plastic
adapter is properly lined up with the metal pin in the inside bottom of the connection piece on the flow outlet.
(In rare cases, this pin may not be present: In this case, it is not necessary for installation.)
Plastic adapter: blind
Directional arrows to match the flow direction
Page 5 of 50
Article no.: 1080621033
in a fix installed single pipe connection piece
2022-02-04
Subject to technical change! Errors excepted.
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