6
Subject to modifications and errors excepted.
Any liability for misprints excluded. SAP139726_150529_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 pressure to avoid cavi-
tation.
To mount the heat computer of the C5-ISF 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.
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.
■
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.
■
Keep about 1 meter distance between zelsius
®
C5-ISF and electromagnetic sources of inter-
ference like switch cabinets, motors or pumps.
Keep about 0.2 m distance to power cables.
Keep min. 3 cm free mounting space around
the device.
