Techem MID Instrucciones De Instalación página 4

Installing the volume measuring
section
!
The heat meter must be protected against
magnetite and dirt for the device's entire wor-
king life.
1 For new installations, rinse the pipe thoroughly
in advance with the meter replacement pipe
section.
2
Deactivate the pump
3
Close isolation valves upstream of the strainer
and downstream of the VMT.
4 Remove meter replacement pipe section or old
meter.
5 Remove old seals.
6 Clean the sealing surface.
Install the VMT and use new seals.
7
8
Open the shut-off valves slowly. Observe the
order and direction of flow:
in the inlet pipe
in front of the volume measuring section
behind the volume measuring section
9 At the same time, the VMT is bled.
10 Activate the pump.
11 Implement a function check.
12
Seal the VMT.
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Symbols
e.g. 1
PN / PS
e.g. DE-07-MI004-... Conformity number
CE M... ...
3
qi [m /h]
qp [m 3 /h]
qs [m 3 /h]
e.g. DN15
000
m 3
Recording precision
class
Pressure level
Calibration year,
notified body ...
Lowest flow rate
(at qi/qp = 1:50)
Nominal flow rate
Highest flow rate
Connection nominal diame-
ter
Horizontal
Vertical
Installation position can be
chosen freely