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CONTECA
EASY ULTRA direct heat meter
®
MID Directive - Bus RS-485 transmission
7507 series
Product range
7507 series
Heat meter with threaded connection
7507 series
Heat meter with flanged connection
Code 755010
TOUCH-screen controller
Code 750450
EASY datalogger
Code 750350
EASY TELE datalogger
7558 series
Additional options
Technical specifications
- Electric supply:
24 V (+10 % / -5 %) (ac) - 50 Hz - 1 W
- Data transmission:
M-Bus protocol on BUS RS-485 (default)
MODBUS protocol on BUS RS-485 (on request)
- Tamper-proof protection
- Advanced control software
- Conformity:
Directive 2014/32/EU EN 1434 (MI004)
Function
CONTECA
EASY ULTRA is an ultrasonic heat meter, especially
®
suited to measuring thermal energy consumption in residential
buildings; thanks to a double memory register, it can also meter
energy in both heating and cooling modes (option code 755810).
The device comprises an electronic calculator unit, an ultrasonic
flow meter and two temperature probes. The CONTECA
ULTRA meter is extremely simple to install and requires no special
maintenance.
The flow is measured using the two-way ultrasound technique, based
on the transit time method. As it has no moving parts, the device
is therefore not very susceptible to build-up issues and offers an
extremely low pressure drop.
The CONTECA
EASY ULTRA meter is equipped with an 8-digit LCD
®
display that can be switched on with a key. This display enables easy
reading of both energy consumption values and technical data, for
appliance operating status evaluation and data logging.
The CONTECA
EASY ULTRA meter is able to acquire up to 4
®
additional pulse inputs and two additional alarm-status digital inputs,
and is equipped for centralised teletransmission (max. 250 users) in
M-Bus protocol, on the RS-485 network. The device also supports
MODBUS RTU protocol.
Standard installation
CONTECA
EASY
EASY
RS485
1
01307/19 GB
EASY
®
size 1/2"–1 1/2"
size DN 50–DN 200
CALEFFI
M07 1259
07185865
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Related Manuals for CALEFFI CONTECA EASY ULTRA
Summary of Contents for CALEFFI CONTECA EASY ULTRA
- Page 1 24 V (+10 % / -5 %) (ac) - 50 Hz - 1 W - Data transmission: M-Bus protocol on BUS RS-485 (default) CONTECA EASY EASY MODBUS protocol on BUS RS-485 (on request) CALEFFI RS485 - Tamper-proof protection - Advanced control software - Conformity: Directive 2014/32/EU EN 1434 (MI004) M07 1259...
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Page 2: Technical Specifications
Technical specifications Temperature probes Flow probe length Return probe length Probe type Working temperature range limits °C 10–90 (HEATING) - 2–25 (COOLING) 3–80 (HEATING) - 3–20 (COOLING) Temperature difference limits ≤ °C 0,05 Measurement sensitivity Flow meter DN 125–DN 200 1/2”–1 1/2”... -
Page 3: Installation Procedure
Guidelines for first installation It is good practice to install shut-off valves upstream and downstream from the meter in order to facilitate installation and maintenance, if required. A filtering device must be provided upstream of the flow rate meter in order to protect the meter. With a diameter of 1/2”... -
Page 4: Maintenance Work
2) User circuit diagram - 2-way zone valve regulation Maintenance work Strainer cleaning It is periodically necessary to clean the strainer on the flow pipe designed to protect the volume meter. By observing the instant flow rate and flow-return temperature difference values (significantly lower flow rate compared to the nominal value and significantly higher temperature difference), it is easy to find System... - Page 5 CONTECA EASY ULTRA meter electrical connections ® For box or direct wall mounting, use the screws provided and insert them into the corresponding holes ELECTRONICS BOX REAR PART 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 TEAR-PROOF CABLE CLIP CABLE ROUTE Accessory...
- Page 6 • Heating/cooling flow meter • Additional pulse inputs 755825 11 - 12 Flow meter pulse input. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 E.g.: Heating water - Electrical energy - Gas 11 (blue wire) 12 (white wire) NOTE: The additional inputs are only enabled with codes 755825.
- Page 7 User information cycle The heat meter is equipped with an LCD display. The display is activated by pressing the key on the front. By repeatedly pressing the key briefly, it is possible to scroll through the various information windows. Press and hold the key corresponding to some of the screens to access additional information.
- Page 8 Test Instructions An input pulse can be simulated by connecting pins 11 - 12 (fig. 3). The 7507 series meter is equipped with a fast output test The maximum input pulse frequency is 1 Hz. device located inside the plastic container. In order to access this, remove the seal and take out the fixing screws.
- Page 9 Lead sealing procedure Meter with threaded connections Insert the steel thread into the dedicated hole on the volume meter caps and twist it. Wind the thread as illustrated in the figure so that, once lead sealing is complete, the cap cannot be unscrewed without breaking the seal or the thread.
- Page 10 Lead sealing procedure Meter with flanged connections Insert the steel thread into the hole as illustrated in the figure and wind it around the pipe; Wind the thread as illustrated in the figure so that, once lead sealing is complete, the flow meter cannot be removed without breaking the seal or the thread.
- Page 11 EASY RS485 RS485 RS485 Controller code 755010 CALEFFI Hydronic Solutions Code 755010 - Serial LA + LB + ... + LN + L1 + L2 < 1.200 m 755058 Application diagram for M-Bus slave converter - RS-485 code 755058 The software protocol used for supervisor/CONTECA environment ®...
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Page 12: Touch Controller
- Electric supply: 100-240 V (ac) / 9 V (dc) - 7 W. - LAN: Wireless AP, 4-port switch router with firewall. - Dimensions: (H x W x D) 36 x 85 x 100 mm (mounting on horizontal N.B.: User data MUST be submitted to Caleffi before plane). commissioning can take place. - Page 13 EASY heat meter supply; its on-site application ® The pulse output enables transferral of the heating and/or cooling and setup must be carried out by Caleffi technicians or staff from an energy values to a generic logger. The pulse weighs 1 kWh. authorised service centre.
- Page 14 DATA CENTRALISATION WITH PULSE MONITOR 720090 Building transmission diagram USB/Radio transmission device + SW7200 software for reading and viewing consumption data. Two-way wireless transmission 868.0–868.6 MHz, 10 mW. Software developed for Microsoft Windows operating system. ® 7504.. 720030 Code 720090 USB/Radio device + SW7200 software 720090 720030...
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Page 15: Specification Summary
SPECIFICATION SUMMARY 7507 series EASY ULTRA direct heat meter, compliant with directive 2014/32/EU (MID), for use in heating and air- CONTECA ® conditioning systems, with the following specifications: ultrasonic volume meter for hot water (maximum temperature 90 °C) with pulse output, NTC type temperature probe, data viewing on 8-digit display, working temperature range 10–90 °C, protection class IP 54, transmission via TWO-WAY Bus in accordance with M-Bus protocol over RS-485 or MODBUS RTU over RS-485, electric supply 24 V (ac) 50 Hz - 1 W. - Page 16 (according to form D - MID directive) Declaration of conformity The manufacturer, Caleffi S.p.A., declares that equipment in the CONTECA EASY series 7502-7504-7507 complies with Directive 2014/32/EU. The full text of the EU declaration of conformity is available at the following internet address: http://bit.ly/Conteca_EASY We reserve the right to make changes and improvements to the products and related data in this publication, at any time and without prior notice.
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