Thermal Energy Meter Wmz; General Description - Dimplex WPMJ EconPlus-MD Installationsanleitung

4.3 Thermal energy meter WMZ

4.3.1

General description

The thermal energy meter (WMZ 25/32) on reversible heat
pumps with an additional heat exchanger is for calculating
precisely the quantity of thermal energy given off by the
additional heat exchanger. It is available as an accessory.
Sensors in the flow and return of the additional heat exchanger
line and an electronics module acquire the measured values and
transmit a signal to the heat pump manager, which, depending
on the current operating mode of the heat pump (DHW/
swimming pool), totals the thermal energy in kWh and displays it
in the operating data and history menu.
4.3.2 Hydraulic and electrical integration of the thermal energy meter
The thermal energy meter requires two measuring devices for
data acquisition.
The measuring tube for the flow measurement 

This must be installed in the heat pump flow of the additional
heat exchanger upstream of the branch for domestic hot
water preparation (observe flow direction).
 A temperature sensor (copper pipe with immersion sleeve)
This must be installed in the heat pump return of the
additional heat exchanger.
Fig. 4.6: Hydraulic and electrical components of the thermal energy meter
NOTE
The thermal energy meter complies with the quality requirements of the
German market incentive programme subsidizing efficient heat pumps.
The thermal energy meter is not subject to obligatory calibration, and can
therefore not be used for the heating cost billing procedure!
The installation locations for both measuring tubes should be as
close to the heat pump as possible in the generator circuit.
To avoid eddying effects which could lead to incorrect
measurements, there should be a gap of 50 cm between the
measuring devices and other installed components such as
pumps or valves.
452114.66.93 FD 9506
WPMJ EconPlus-MD
EN-5