Electronic device for heat cost allocation based on measuring the heat output from radiators. • With radio interface for remote read out or optical interface for on-site read out without communication • Available as a two-sensor device or with remote sensor • Parallel transmission of AMR and walk-by data telegrams • Communication in S-mode or C-mode • OMS compliant AMR telegrams in C-mode Building Technologies

Application The electronic heat cost allocators WHE5.. and WHE6.. are designed for decentralized installation and used when heating costs must be allocated to several consumers based on actual consumption. The temperatures are acquired by one (radiator) or two sensors (radiator and room temperature sensor). In two-sensor mode, the actual temperature difference between room temperature and radiator temperature is acquired, while in onesensor mode, a constant value for the room temperature is predefined. These measured values are used as the basis for calculating consumption. Main area of application...

Depending on the type of communication, the heat cost allocators are classified as follows: • No communication interface • With optical communication interface (optional) • With RF interface No communication interface Heat cost allocators without communication interface WHE50.. must be read visually on site and the measuring results must be manually recorded. They are especially suited for systems that do not require complex data evaluations or particularly fast readout processes. With optical communication interface The heat cost allocator with optical communication interface can be read on...

Function control The heat cost allocator performs a self-test every 4 minutes. An error message "Err x" is displayed if the error lasts for 5 consecutive measuring cycles (20 minutes). After the error has been registered and shown on the display, the device stops measuring. The date the error occurred is stored internally. Display device type Device states, consumption values and measuring system information are displayed in a loop. Siemens Building Technologies

Display sleep mode The devices are delivered ex factory in sleep mode. Measuring operation is inactive. Siemens Building Technologies

Technical design Siemens Building Technologies

Continuous counting (without zeroing) The meter status is not "zeroed" at the due date, but continues to count like a roller type counter. As a default, this option is set to "No" (counter reading will be reset to "0" at the due date) Display battery warning The heat cost allocator features service life monitoring. An optical message "bat00" is shown on the display if the battery service life has expired Display meter readings in case of errors The units accumulated until the heat cost allocator fails will be displayed on the heat cost allocator as a counter reading. The option is set to "No"...

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Scope of delivery The heat cost allocators are delivered in packages of 50 units (1 packaging unit). Note The heat cost allocators are delivered without instructions and without heat conductor. Siemens Building Technologies

Other accessories Programming and readout accessories Product documentationSystem Manual The System Manual is available in the following languages: Related documents such as environmental declarations, CE declarations, etc., can be downloaded at the following Internet address: http://siemens.com/bt/download Siemens Building Technologies

The heat cost allocator is designed for wall mounting Install the device in accordance with the System Manual Observe the permissible ambient conditions The heat cost allocator must not be subjected to dripping water Note For information about project planning and installation, please refer to the System Manual. Installation Attach the heat cost allocator to each radiator with the appropriate mounting materials (listed under accessories). Maintenance The devices are maintenance-free. Disposal The device is considered an electronics device for disposal in terms of European Directive 2012/19/EU...

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Issued by Siemens Switzerland Ltd Building Technologies Division International Headquarters Gubelstrasse 22 CH-6301 Zug Tel. +41 41-724 24 24 www.siemens.com/buildingtechnologies 14 Siemens Building Technologies Document ID A6V10786229_en--_e Edition © Siemens Switzerland Ltd, 2016 Technical specifications and availability subject to change without notice.