2
3.2
Examples of installation
Fig. 2: Avoid accumulation of air
Fig. 3: Mount a valve or a regulator after the flow meter
Note:
During installation it must be ensured that no water
can enter the calculator.
3.3
Installation for cooling metering
Note:
It is recommended that the flow meter is installed
on the hot side.
When installing as a cold meter it is essential that the black cover
on the measuring tube is pointed to the side or downwards in order
to avoid problems with condensation forming.
Fit the calculator separate to the volume measurement tube, e.g.
on the wall. Make a loop downwards in order to prevent
condensation running along the connected lines into the calculator.
Transducer cover
Fig. 4: Recommended installation position for cooling metering
4
Calculator
The ambient temperature of the calculator must not exceed 55 °C.
Avoid direct sunlight. For water temperatures between 10 °C and
90 °C you can fit the calculator on the volume measurement unit or
on the wall.
4.1
Aligning the calculator
Proceed as follows to align the calculator:
1.
Pull the calculator off the volume measurement unit.
2.
Turn the calculator to the left or right through 90° or 180° as
required.
3.
Push the calculator onto the adapter plate in this position until
it engages.
Fig. 5: Calculator installation position
4.2
Wall fitting (split fitting)
Fit the calculator to the wall at water temperatures below 10 °C
and above 90 °C.
For wall mounting proceed as follows:
Pull the calculator off the adapter plate.
Unscrew the adapter plate from the volume measurement unit.
Fit the adapter plate to the wall.
Push the calculator onto the adapter plate.
Fig. 6: Adapter plate and wall fitting
5
Power supply
The flow meter is equipped with a long life battery for ten years of
operation. You can take the operating time from the dial plate.
Warning:
Do not open the batteries. Do not bring battery into
contact with water or expose to temperatures above 80 °C.
Dispose of used batteries at suitable collection points.
Note:
Only batteries approved by the manufacturer may be
installed.
6
Interfaces
The flow meter is equipped with an optical interface in accordance
with EN 62056-21 as standard.
In addition, the flow meter is equipped with a pulse output and is
delivered with a 2m two wire cable. The connecting cable can be
lengthened with a cable 2 x 0.75 mm
2
. A distributing box is
recommended.
7
Activation of the calculator
For activation proceed as follows:
Open the slide valves slowly.
Check the system for leak-tightness and bleed air out carefully.
After more than 100 sec. the flow meter begins to work.
If the operating limit is exceeded and the flow rate is positive,
volume pulses are generated according to the pulse parameter
settings.
Check the measured value flow or the volume of progress on
the connected calculator for plausibility.
Vent the system until the flow rate value on the calculator is
stable. Check the output.
8
Functional details
The operating hours are counted from the first connection of the
power supply.
Missing hours are summated if there is an error and the flow meter
is thus unable to take a measurement.
Volume readings, maximum flow rates and missing hours are
stored monthly for 36 months.
The device number and the firmware version number are issued by
the manufacturer.
