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Building Technologies
Electronic Heat Meter
CE1N5331en
HVAC Products
03.11.2005
Determination of pressure loss
∆
0,5
0,4
0,3
0,2
0,1
0,05
0,04
0,03
0,02
0,01
1,0
0,2 0,3 0,4 0,5
1,0
1,5 2
3 4 5
Q
p
533
3D
01
0,6
1,2
2,5
6
Q
p
0,6 m
3
/h
Q
p
2,5 m
3
/h
Q
p
1,5 m
3
/h
Pressure loss curve
∆
p
Pressure loss in bar
Q
Flow in m
3
/h
Mounting instructions
•
Observe the local regulations for the use of heat meters (mounting, sealing, opera-
tion, etc.).
•
Mount the heat meter according to the type either in the flow or return between two
shut-off valves. It must be easily accessible for reading and service work.
•
A stilling channel is required at the inlet in front of the device:
−
150 mm for installation lengths of 80 mm and 110 mm
−
200 mm for an installation length of 130 mm
•
If the device is only to be used when starting up, the spacer can be mounted first.
•
Before installing the meter, rinse the pipe well; mount the spacer for this purpose.
•
When installing, observe the flow sign – an arrow on the flow meter.
•
If tees of a different brand are used, ensure that they comply with the standard
EN1434!
•
Position the calculator so that the display is easy to read.
•
After mounting, test the system for pressure.
•
Protect the calculator, both temperature sensors and the screw pipe connections
with seals against unauthorized access.
•
Insulate the lead at the installation site of the temperature sensors.
Operating hint
•
Observe the local regulations for recalibration purposes.