This installation guide is intended for trained personnel and therefore does
not include basic working steps.
IMPORTANT
The seal on the meter must not be damaged! A damaged seal immediately
invalidates the factory warranty and calibration / conformity.
It is not allowed to disconnect the integral battery of the meter.
The disconnection of the integral battery (after braking the sealing) will lead
to the total loss of all stored data.
INSTALLATION OF THE METER
Install the meter in the low or high temperature pipe according to the data
on the type plate. The meter must be fitted so that the arrow on the housing
points in the same direction as the direction of flow (Fig.).
EW447
M-MKWZ
EW450
M-MKKWZ
Forward
Strainer
Stop valve
Ensure that the volume measuring component is always filled with liquid on
completion of installation.
Calming sections are only necessary for the WS volume measuring com-
ponent of model 449/452. A length of 3 x D is required for a straight inlet
section and 5 x D for a 90° bend or a T-piece before the inlet.
INSTALLATION OF TEMPERATURE SENSORS
The temperature sensors are marked with coloured type labels: red for
installation in the high temperature pipe and blue for installation in the low
temperature pipe.
INSTALLATION IN A POCKET FOR M-TWZ AND WS-TWZ
Nominal diameter
DN 15/20
DN 25/40
Length
L = 34 mm
L = 50 mm
Coupling thread
Please note: With the pipe diameter of < _ 25 mm the temperature sensors have to be installed directly and not via pockets
EW448
M-TWZ
EW458
M-TKWZ
Return
Stop valve
EW448 AND EW449
DN 50/65
DN 80/100
L = 70 mm
L = 85 mm
D1 = G
/
B
1
2
English
Cooling & Heat: Model 450/451/452
The temperature sensor cables must not be shortened or changed in any other
way.
NOTES
· The requirements of EN 1434-6 for the installation must be observed
· Medium: water without additives
· The HYDRO-SET software is used for reading / parametrization and is available
free in the HY download centre at
http//www.hydrometer.com/systeme/Downloadcenter.html
EW449
WS-TWZ
EW452
WS-TKWZ
Forward
Strainer
Strainer
Return
Marking of cooling & heat meter / heat & cooling meter
This symbol indicates that this version is fully encapsulated for reliable protection
against condensation on the integrator board.
Protection class IP 68.
A temperature sensor is fitted directly in the coupling housing of EW447/450.
A temperature sensor is fitted directly in the coupling housing in model 447/450
M-MKWZ/M-MKKWZ.
L1
Installation and User Guide
Compact Meter
Heat: Model 447/448/449
Forward
Stop valve
D1
MU2H-2601GE25 R1020
Return
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