6
Subject to modifications and errors excepted.
Any liability for misprints excluded. SAP139725_150629_EN
ZENNER International GmbH & Co. KG
Römerstadt 6
D-66121 Saarbrücken
Telephone +49 681 99 676-30
Telefax
+49 681 99 676-3100
E-Mail [email protected]
Internet www.zenner.com
Installation instructions
General information
Read these instructions carefully right up to the
end before starting to mount the device!
The installation has to be done by qualified pro-
fessional personnel. The current laws and regu-
lations have to be observed, especially EN1434
part 1+6, (in Germany also AGFW directive
FW202, FW510, FW218 and DIN4713 part 4 and
the initial verification directive). At devices with
M-Bus the general rules of technology and the
respective regulations for electrical installations
have to be followed.
Make sure no heating water escapes during in-
stallation –
this can cause burns!
The maximum heating water temperature at the
flow sensor may not exceed 90ºC.
For heating systems with a lack of temperature
mixing resp. with temperature stratification a
straight pipeline of min. 10xDN has to be pro-
vided upstream of the meter.
It is important to ensure adequate system pres-
sure to avoid cavitation.
To mount the heat computer of the C5-CMF in
combi version on the wall, the supplied mounting
adapter has to be used. The review of the ap-
proval can be identified definitely in the display
menu (Level 3)
ZENNER recommends to use direct temperature
measurement and not to use immersion sleeves.
The measuring capsule-flow meter (CMF) can
be set in optionally only with the connecting in-
terface versions according to DIN EN 14154-2
listed in the technical data. Using of connection
interfaces or adapting inserts.
Notes to installation of the flow sensor
(VMT)
■
Mount ball valves up- and downstream of the
VMT.
■
Consider the correct installation point (sup-
ply or return). Normally this is the return pipe
(cooler pipe at heating systems). Please note
the type plate information.
■
Consider the correct flow direction. This is indi-
cated by an arrow on the side of the VMT.
■
Using of flow direction modifier is not allowed!
■
Install horizontally or vertically only, not tilted,
inclined or overhead. Installation into horizon-
tal or upstreaming or downstreaming pipelines.
■
Do not install at highest point of piping to avoid
air inside the flow sensor.
■
Consider the dimensions of the heat meter.
Centre distance between 2 EAS at least 135
mm.
