User Manual for VHS Single-Jet Heat Meter
Contents
1. VuHeat utility billing corp User Manual for VHS Single Jet Heat Meter VHS20 VuHeat utility billing corp Contents 1 G D i i 3 enera escription SHOPS HSHHHHSHHSHHHSHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHOHHHHHHHHOHHOHOYH nergy a cu ation SHH HSHHHHHSHSHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHOHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHOHHOH 3 Di 3 ISp ay DIODIADODADOA DIA DADO a d a a d a d a d a a a a a a d a a a d a a a a a a aa a a d d a d a d d a a a a a a d a a a a a a a a a a ADA DAD ADD ADO DADAS ADS nsta ation SHH SHHHSHHHHSHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHOHHHHHHHHHHHHOHHODH 5 Battery II A A A 6 Interfaces SPHHHHSHHHSHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHOHHHHHHOHHOHHOHH OH 7 7 M BUS Interface SPHSHSHSHSSHSHSHSHSHHSHSHSSHSHSHSHSHHSHHSHHSHHSHHSHHSHHHHSHHHHSHHHHSHHSHHSHHHSHHHHSHHSHHSHHHHHHSHHHHSHHHHHHSHHSHHHHHHHHHSHHSHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHOHHHHOHOOD 7 8 Pulse O Devi 8 u se utput evice SHSHSHSHSSHHSHSHSHSHSHSHSHSHSHHSHHSHHSHHSHSHHSHSHHSHHSHHSHHSHHSHHHHHHSHHHSHHHHHHSHHSHHSHHHHHHHHHHSHHFHHHHHHHSHSHHHHHHHHHHHHHHHHHHHSHHHHHHHHHHHHHHHHHHHOHOD 9 Optical f 9 ptica nter l E o PECOT TSIS E T T TE SEE ESE STEE TS SELO SEER ESEESE ESEE ECEE EEE TEE SEEE O EERSTES Tee2. err en TTT ere Tere EESE rere ert 10 Radio Frequency Interface 9 HS SHSSHHSHSHSHSHSHSHSSHHSHHSHHSHSHSHSHSHHSHHHSHHSHHSHHHHHHHHSHSHSHHHHHHHSHHSHHHHSHHHHHHSHHHHHHHHHHHHHHHHHHHSHHHHHHHHHHHHHSHHHHHHHHHHHHHHH OOD 11 Notes On Assembly 9 4000900000000 000000000000000000000000000090000000000000000000000000000000000000000000000000900000000090000000000090000900000009009 12 N On Gl amp Inhibi 9 otes n Y CO n A O eMC maT enn eT ree Tree 1 3 Warranty SHOPS SHHHSHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHEHHHHHHHHHOHHOOHOOHSH 1 0 1 l Contact Kaa a a a a a a aa a a a a a aa a a aa a a a a a a a d a a a a d a a d a a a a a a a a a a a a a a a a a a a a a a a a a d a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a aa a a a a a a a a a a a a a a a a aa a a a a a 10 VuHeat User Manual for Single Jet Heat Meter VHS20 2 VuHeat utility billing corp 1 General Description This manual has been written to inform end users and installers of the properties parameters operation and installation of VuHeat single jet heat meters VHS20 Heat meters are designed to meet the needs of measurement in heating hot water and chilled water applications Hybrid change over versions available for cooling amp heating measurement Complete heat meter is made up of e Single Jet flow meter e A pair of PT1000 sensors e Heat calculator unit Integrat
3. at meters have M Bus optional wM Bus RF 868 and Pulse Output interfaces 7 M BUS Interface M bus is an inexpensive and widespread network communication protocol for remote meter reading and data capture It is suitable for small or large numbers of heat meters and is a serial digital communication interface that allows for very long transmission distances using industry standard cables VHS heat meters are equipped with M bus by default which is delivered via two wire cable which can be lengthened with suitable cable 2 x 0 75 mm and screened M Bus voltage is 12 24 V DC or 24 36 V DC M Bus communication baud rate is 2400 for VHS heat meters Our heat meters are tested to 0 001 m3 and 0 001 kWh resolution Parameter Symbol Unit Model Type VHS20 Accuracy class MID Class 2 Limits of Temperature Qmin 26 5 Qmax C 90 Limits of Temperature Difference A Qmin K 3 A Qmax K 85 Nominal Diameter DN mm 20 Body Thread i 1 Connection Thread Y Length L mm 130 Height H mm 80 2 Permanent Flow Rate dp m h 2 5 Maximum Flow Rate qs m h 5 Minimum Flow Rate qi m h 0 05 Upper Limit of Thermal Power Ps kW 500 VuHeat User Manual for Single Jet Heat Meter VHS20 7 Maximum admissible working pressure Maximum Pressure Loss Installation Position Installation Place Protection Degree Climatic Class Environmental Class Mechanical Class Electromagnetic Class Indicating device Units Displayed Interfaces Software Versio
4. ftware Version Accumulated Energy in k MWh Hours of usage a 2 a o B 5 B VuHeat User Manual for Single Jet Heat Meter VHS20 VuHeat utility billing corp VuHeat utility billing corp 4 Installation The flow direction is marked on the heat meter by an arrow Both the heat meter and temperature sensors are to be installed in the same circuit of the heating plant for correct operation VHS heat meters can be installed horizontally or vertically inclined max 90 It is recommended that you install a dirt filter before the heat meter and a stop cock before and after the meter so that it can be removed if required without the need to drain down the system If installed vertically the heat meter can be rotated around the vertical axis The Integrator can be rotated in steps up to 270 for easier viewing In general proper operation requires the meter to be full of water with a stable flow Carefully consider the installation location and other requirements before installing such as system design future installations usage and maintenance The installation location must avoid direct exposure to sunlight flooding freezing temperatures and contamination Before installing the heat meter make sure that all welding debris metal burrs and sealing material have been cleaned out of the pipe Ensure that the arrow direction on the meter is in accordance with the water flow direction The hea
5. n Check Sum Heat medium Carrier Resolution of LCD Battery Battery Life Output Signal Pulse for Rate Output Signal Pulse for Testing 8 Pulse Output Device VHS heat meters have a pulse output option Type Opto Coupler 2 Wire Max 35V DC Output signal for testing type levels Output signal for rate operation PS Pi 0 05 kWH pulse 1 kWh Pulse m3 kWh Years VuHeat utility billing corp 16 0 25 Horizontal Vertical Flow or Return default IP54 5 to 55 A M1 El LCD 8 digits kWh MWh C m h m M BUS wM BUS PULSE V 1 66 CRCI6 OXFF Water 999999 99 999999 99 3 6 gt 5 1 kWh Pulse 0 05 kWh Pulse Pulse Output Meter Side Pulse Circuit Side Opto Coupler Max 35V DC VuHeat User Manual for Single Jet Heat Meter VHS20 8 VuHeat utility billing corp 9 Optical Interfaces RXD Receive Data TXD Transmit Data DTR Data Terminal Ready SG Signal Ground pa UAWN An optical infrared transmitter receiver is situated in the bottom left corner of the front panel in accordance with the EN 61107 standard The data format complies with IEC 870 in start mode and can be subsequently changed to a format specified by the manufacturer A standard optical head with a permanent magnet is used to read data and configure tariff limits 10 Radio Frequency Interface VHS heat meters have a Radio Frequency output optio
6. n Wireless M Bus The Radio Frequency communication module operates at 868 MHz wM BUS EN 13757 4 2005 11 Notes on Assembly e Install heat meter only after completion of pipework and flushing to avoid damage or contamination e Do not install temperature sensors within the thermal sphere of influence of other heating circuits e Temperature sensor cables must not be folded shortened or extended e The Flow sensor must be installed in the supply or return side of the heating circuit as specified at time of order 12 Notes on Glycol amp Inhibitor Contact us or your local distributor for our latest information regarding the use of Inhibitor within the RHI schemes and our operating performance with Glycol inclusion within system make up VuHeat User Manual for Single Jet Heat Meter VHS20 9 VuHeat utility billing corp 13 Warranty VuHeat warrants the products sold hereunder properly used and properly installed under normal circumstances and service as described in this user s manual shall be free from faulty materials or workmanship for 180 days for OEM products and 365 days for non OEM products from the date of shipment This warranty period is inclusive of any statutory warranty Any repair or replacement serviced product shall bear the same terms in this warranty 14 Contact Distributed by VuHeat User Manual for Single Jet Heat Meter VHS20 10
7. or 2 Energy Calculation Q mcAt Heat energy is calculated using the formula above Q calculated energy m amount of water passing through the meter At Supply and return water temperature difference C fixed 3 Display The Integrator unit features a liquid crystal display LCD with digits and special characters There are three display menu s o Main e Statistics e Technical All recorded data can be recalled via the button on the top of the device A short press of this button recalls the data for the chosen menu display In order to change the menu keep the button pressed for more than 3 seconds After 3 minutes the device automatically returns to the main cycle Main Menu The main menu initially displays the values for the current date and by keeping the button pressed for 3 second the values for the last 12 months can be displayed one by one VuHeat User Manual for Single Jet Heat Meter VHS20 3 Display items Accumulated energy in k MWh Display segment test Accumulated quantity of water in m Actual flow rate in m h Return temperature Supply temperature Temperature difference Serial Number Software Version 10 Hours of operation A A A PO a Change display item by depressing the button once kWh Lo m3 0 26 Quantity of Water in m3 Actual Flow in m3 h C 27 84 Flow Temperature Return Temperature a 4398 Temperature Difference 0 39 tal 06 12345678 Serial Number So
8. t meter must be installed as far away as possible from flow disturbances such as valves three way tubes elbows water pumps and filters The heat meter cannot be installed at the suction side of the pump Install the temperature sensors as per the stickers Don t split or mix the paired temperatures sensors nor shorten or lengthen cables Avoid installing the heat meter on horizontal pipes with downward water flow and do not install at the free outlet of vertical pipes Heat meters must not be installed at the top of the system where air bubbles can collect Temperature sensor BRASS BODY wu TEMPERATURE SENSOR IMMERSION DEPTH VuHeat User Manual for Single Jet Heat Meter VHS20 5 VuHeat utility billing corp Normal flow qp m h 2 5 Body thread 1 Connection thread 3 4 Height mm 80 2 Length mm 129 VuHeat nn THERMOCOUPLE INPUT VALVE F utility billing corp a lt LOW M BUS LINE CUT OFF VALVE 5 Battery VHS heat meters are equipped with a lithium battery This battery must not be opened by force be short circuited or exposed to water or temperatures exceeding 80 C Empty batteries electronic instruments or components should be disposed of properly at suitable collection centres or returned to us under our obligations to the WEEE Directive 2002 96 EC VuHeat User Manual for Single Jet Heat Meter VHS20 6 VuHeat utility billing corp 6 Interfaces VHS he
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