User Manual

s
en
Operating Instructions
Ultrasonic heat and cold meter 2WR6..
CE2B5378xx
15.05.2015
Translation
2WR6..
Siemens Building Technologies CE2B5378xx 15.05.2015 5
Note:
These operating instructions remain with the end user following activation.
Note:
In the following text, the term meter refers to both
the heat
ing meter and the cooling meter, unless other-
wise specified.
1. General
1.1 Use
The 2WR6.. is used as a meter for heating or cooling con-
sumption measurement in systems with water.
The meter consists of two temperature sensors and an elec-
tronic unit which calculates the energy consumption from the
volume and temperature difference.
Note:
The meter cannot be opened without damaging
the
security seal.
1.2 General notes
The meter left the factory in a faultless condition where safety
is concerned. The manufacturer will provide additional tech-
nical support on request. Calibration relevant security seal on
the meter must not be damaged or removed. Otherwise the
guarantee and calibration validity of the meter will lapse.
• Keep the packaging so that you can transport the meter in
its original packaging following expiry of the calibration va-
lidity.
• Lay all cables at a minimum distance of 500 mm to high
voltage and high frequency cables.
• A relative humidity of <93 % at 25 °C is permissible (with-
out condensation).
• Avoid cavitation in the whole system due to overpressure
i.e. at least 1 bar at qp and approx. 3 bar at qs (applies for
approx. 80 °C).
• At a heating meter the mounting place of the flow
sensor cold side is equivalent to return . The mount-
ing place of the flow sensor hot side is equivalent to flow
.
• At a cooling meter the mounting place of the flow
sensor hot side is equivalent to the return . The
mounting place of the flow sensor cold side is equivalent to
flow .
2. Safety Information
The meters may only be used in building service
engineering systems and only for the applications
described.
The meter is designed in accordance with the guide-
lines of the environment categories M1+E1 and must
be fitted in line with these regulations.
The local regulations (installation etc.) must be ad-
hered to.
Adhere to the operating conditions according to the
dial plate during use. Non-adherence can cause
hazards and the guarantee will lapse.
Adhere to the AGFW requirements regarding circu-
lating water (FW510).
The meter is only suitable for circulating water in
heating systems.
The meter is not suitable for drinking water.
Do not lift the meter by the electronic unit.
Be aware of sharp edges on the thread, flange and
measuring tube.
Only personnel, trained in the installation and opera-
tion of meters in heating and cooling systems, may
install and remove the meter.
Only install or remove the meter when the pipes are
pressure-less.
After installing the meter, check the leak-tightness of
the system.
Guarantee and calibration validity will lapse if the
calibration relevant security seals are broken.
Only clean the meter from outside with a soft, lightly
wetted cloth. Do not use any spirit or cleaning sol-
vent.
As far as disposal is concerned, the meter is a waste
electronic appliance in the sense of European Di-
rective 2012/19/EU (WEEE) and it must not be dis-
posed of as domestic waste.
- Dispose of the meter through the channels
provided for this purpose.
- Respect the local and currently valid legislation.
- Dispose of used batteries at the collection points
provided for them.
The meter contains lithium batteries. Do not dispose
of the meter and the batteries with domestic waste.
Observe the local stipulations and laws on disposal.
You can return the lithium batteries to the manufac-
turer for appropriate disposal following use. When
shipping please observe legal regulations, in particu-
lar, those governing the labelling and packaging of
hazardous goods.
Do not open the batteries. Do not bring batteries into
contact with water or expose to temperatures above
80 °C.
The meter does not have any lightning protection.
Ensure lightning protection via the in-house installa-
tion.