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HWK 332 - HWK 332 Econ5P
4.3 Thermal energy meter WMZ
4.3.1 General description
The thermal energy meter (WMZ 25/32) is used for measuring
the quantity of thermal energy supplied. It is available as an ac-
cessory. Due to the additional heat exchanger, two thermal en-
ergy meters are required for measuring the quantity of thermal
energy.
Sensors in the flow and return of the heat exchanger pipes and
an electronics module acquire the measured values and transmit
a signal to the heat pump manager, which, depending on the cur-
rent operating mode of the heat pump (heating/DHW/swimming
pool), totals the thermal energy in kWh and displays them in the
operating data and history menu.
NOTE
The thermal energy meter complies with the quality requirements of the
German market incentive programme subsidising efficient heat pumps.
The thermal energy meter is not subject to obligatory calibration, and can
thus not be used for the heating cost billing procedure!
4.3.2 Hydraulic and electrical integration
of the thermal energy meter
The thermal energy meter requires two measuring devices for
data acquisition.
A measuring tube for the flow measurement
This must be installed in the heat pump flow (observe flow
direction).
A temperature sensor (copper pipe with immersion sleeve)
This must be installed in the heat pump return.
The installation locations for both measuring tubes should be as
close to the heat pump as possible in the generator circuit.
The distance from pumps, valves and other installations must be
taken into account, as eddying effects could lead to incorrect
thermal energy metering (a calming section of 50 cm is recom-
mended).
EN-4
All manuals and user guides at all-guides.com
5
A pallet should be used to transport the heat pump to its final in-
stallation location. The basic device can be transported with a lift
truck, a pushcart or similar.
The hydro tower is to be fixed to the transport pallet with screws.
452162.66.05 · FD 9501
Transport
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