APATOR INVONIC H Ultrasonic Heat And Cooling Meter Instruction Manual

APATOR INVONIC H Ultrasonic Heat And Cooling Meter

Product Information

Product Specifications

Marking and Sealing

4.1. Marking|
---|---
4.1.1. Calculator|
4.1.2. Flow sensor|
4.2. Security seals|

Product Usage Instructions

Follow the steps below for proper installation:

1. Ensure basic requirements are met.
2. Perform electrical wiring according to the provided instructions.
   • Connect temperature sensors as instructed.
   • Install expansion modules in the calculator if required.
   • Install the M-Bus module if necessary.

DECLARATION OF CONFORMITY

EC DECLARATION OF CONFORMITY

Apator Powogaz S.A. hereby declares that this product meets the requirements of the following directives:

• 2014/32/EU Measuring Instruments Directive (MID)
• 2014/30/EU EMC Directive
• 2014/35/EU Low voltage Directive
• 2014/53/EU Radio Equipment Directive (RED)

EC type examination certificate no. LT-1621-MI004-029 revision 1

FOR EU CUSTOMERS: WEEE MARKING
Marking of electrical and electronic equipment per Article 14(2) of Directive 2012/19/EU When this symbol is placed on a product, the product cannot be disposed of with household waste. The product must be processed under a proper waste electrical and electronic equipment collection and disposal program. Contact your local authorities for more information about how this product should be recycled.

SAFETY GUIDELINES

Before installing this product, read this Manual and follow all information and guidance provided herein.
Caution: If the product is used otherwise than intended by its manufacturer, its safety level might be compromised.

1. The meter is powered with a battery (rated at 3.6 V), and the risk factor of its installation and servicing is the working medium flowing at a maximum pressure of 2.5 MPa and a maximum temperature of 180°C.
2. Only qualified technical professionals may install and service the meters. Qualified technical professionals must know and understand the technical manuals of this product and applicable general safety rules. Follow all applicable general safety rules when installing and servicing this product.
3. This product meets Safety Class II requirements. The product does not require a protective earth bonding; its enclosure is made of plastic, and all electrically conductive components are contained within it.
4. The safety of installation and servicing of the meter is guaranteed by:
   • proper insulation of electrical wiring;
   • leak-proof connections of the flow sensor and temperature sensors on the service pipeline;
   • reliable fitting of the meter components in the service installation.
5. Safety requirements for the temperature sensors, see the applicable technical manuals.
6. Operating environment:
   • Ambient temperature:
   • Calculator: from +5oC to +55oC
   • Flow sensor: from -30oC to +55oC
   • Relative humidity: < 93oC
     CAUTION! Assemble and disassemble the components of the meter only when you have verified that its pipeline contains no working medium (liquid).

Application

The INVONIC H ultrasonic heat and cooling meter has been designed for measuring heating and cooling energy and recording the metered values in two separate registers. It is intended for billing the consumption of heating/cooling energy in district or industrial heating/cooling systems which serve residential houses, office buildings, energy plants and the like. The microprocessor compact ultrasonic heat and cooling meter can be mounted either on the supply pipeline or the return pipeline. The meter is available with a pair of factory-installed temperature sensors and as well in version where user can install his own pair of type approved temperature sensors compliant with Directive 2014/32/EU of 26 February 2014 on measuring instruments (the MID, or the Measuring Instruments Directive).` Meter complies to essential requirements of the Technical Regulations For Measuring Instruments, dated 30 October 2015 (transposing in the NB’s country law Directive 2014/32/EU of 26 February 2014 on measuring instruments:

• Annex I (Essential requirements)
• Annex MI-004 (Heat meters)

The INVONIC H complies with the European standard EN 1434 “Heat meters”, Parts 1+6. The INVONIC H complies with Class C of environmental protection requirements according to EN 1434-1:2016

• Ambient temperature range: from +5°C to +55°C
• Humidity: condensing
• Location: indoor
• Mechanical environment class: M1
• Electromagnetic environment class: E2

Type number coding of the INVONIC H heat/cooling meter:

• with the exception of flow sensors with a nominal flow qp 0.6 m3/h; 1 m3/h; 1.5 m3/h (130 mm); 3.5 m3/h
• register available only in heat and cooling meters

Specification

• Accuracy class: 2 by EN1434-1:2007
• Energy units: GJ, Gcal, kWh, MWh
• Maximum value of thermal power: 5.28 MW

Flow measurement

• Nominal flow rate to minimum flow rate ratio (should be specified when ordering): qp/qi  100 or qp/qi  250 [available only for meters with qp  1.5 m3/h (110 mm and 190 mm); 2.5 m3/h; 6 m3/h; 10 m3/h; 15 m3/h; 25 m3/h; 40 m3/h; 60 m3/h]
• The flow sensor can either be threaded (max qp = 10 m3/h) or flanged.
• Table 2.1. Flow sensor technical specifications

Nominal flow q p, m3/h| Maximum flow q s, m3/h| Minimum flow q i, m3/h| Starting flow, m 3/h| Overall length L, mm| Pressure loss at q p, kPa| Pipeline connection

(G – threaded, DN – flanged)

---|---|---|---|---|---|---
0.6| 1.2| 0.006| 0.003| 110| 7.0| G¾“
0.6| 1.2| 0.006| 0.003| 190| 0.9| G1“ or DN20
1.0| 2.0| 0.010| 0.005| 110| 11.3| G¾“
1.0| 2.0| 0.010| 0.005| 190| 2.5| G1“ or DN20
1.5| 3.0| 0.006| 0.003| 110| 17.1| G3/4“
1.5| 3.0| 0.006| 0.003| 190| 5.8| G1“ or DN20
1.5| 3.0| 0.015| 0.003| 110| 17.1| G3/4“
1.5| 3.0| 0.015| 0.003| 190| 5.8| G1“ or DN20
1.5| 3.0| 0.015| 0.005| 130| 7.2| G1“
2.5| 5.0| 0.010| 0.005| 130| 19.8| G1“
2.5| 5.0| 0.010| 0.005| 190| 9.4| G1“ or DN20
2.5| 5.0| 0.025| 0.005| 130| 19.8| G1“
2.5| 5.0| 0.025| 0.005| 190| 9.4| G1“ or DN20
3.5| 7.0| 0.035| 0.017| 260| 4.0| G1¼“ or DN25
6.0| 12.0| 0.024| 0.012| 260| 10.0| G1¼“ or DN25
6.0| 12.0| 0.060| 0.012| 260| 10.0| G1¼“ or DN25
10.0| 20.0| 0.040| 0.020| 300| 18.0| G2“ or DN40
10.0| 20.0| 0.100| 0.020| 300| 18.0| G2“ or DN40
15.0| 30.0| 0.060| 0.030| 270| 12.0| DN50
15.0| 30.0| 0.150| 0.030| 270| 12.0| DN50
25.0| 50.0| 0.100| 0.050| 300| 20.0| DN65
25.0| 50.0| 0.250| 0.050| 300| 20.0| DN65
40.0| 80.0| 0.160| 0.080| 300| 18.0| DN80
40.0| 80.0| 0.400| 0.080| 300| 18.0| DN80
60.0| 120.0| 0.240| 0.120| 360| 18.0| DN100
60.0| 120.0| 0.600| 0.120| 360| 18.0| DN100

Working medium (liquid) temperature range: from +5°C to +130°C.
Important: If the working medium temperature is equal to 90°C or lower, the calculator can be installed directly on the flow sensor or on a wall. If the working medium temperature exceeds 90°C, the calculator must be physically separated from the flow sensor and installed on a wall.

• Flow sensor to calculator cable length: 1.2 m (2.5 m and 5.0 m available on custom order) Maximum operating pressure: 16 bars (25 bars available on custom order)
• Behaviour of the meter, when the flow rate exceeds the maximum flow qs: for flow rate q < 1.2 × qs – linear;
• for flow rate q > 1.2 × qs – constant (the formula q = 1.2 × qs is used to calculate the heat energy). The error “Maximum allowable value of flow rate is exceeded ” is registered with duration of this error state.

Pulse inputs

• Number of pulse inputs : 2
• Measurement unit: m3
• Pulse value: programmable
• Type of pulses: IB by EN 1434-2
• Min. pulse width: 100 ms
• Maximum permissible frequency of input pulses: 3 Hz
• Maximum permissible voltage of input pulses: 3.6 V
• Condition of maintenance of high level: 3.6 V via 3.3 MΩ resistor

Temperature measurement

• Temperature measuring range (for the calculator): 0-180°C
• Temperature difference measuring range (for temperature inputs): 3-150 K or 2-150 K
• Temperature difference below which the energy is not totalled 0.15 K
• Temperature sensor type: platinum, Pt500, resistive, compliant with EN 60751 and paired according with
  • EN 1434 and Directive 2014/32/EU Annex MI-004
• Sensor installation to meters with threaded connection: short, directly mounted (type DS) in accordance with EN 1434-2
• Sensor installation to meters with flanged connection: short or long, pocket mounted (type PS & PL) in accordance with EN 1434-2
• Connection method and maximum cable length: 2-wire; up to 5 m

The lower temperature measuring limit depends on the parameters of connected temperature sensors

LCD display
The meter features an 8-digit LCD display with special icons for displaying parameters, units, and operating modes. The LCD can display the following indications: total and instantaneous measured parameter values, archived data and meter configuration data. See p. 6.3.1 for details.

• Display resolution for energy: 00000001 kWh; 00000.001 GJ / Gcal / MWh
• Display resolution for volume: 00000.001 m3

Data registration and storage
Every hour, day and month values of the measured parameters are stored in the meter’s memory. All archived data can be accessed only with a remote reading interface (see p. 6.5). The monthly values of the parameters stored in the data logger can be read from LCD display (see p. 6.3.1).
Table 2.2. Parameter values recorded by meter hourly, daily and monthly

Data logger capacity:

• up to 1480 h of hourly records
• up to 1130 days of daily records
• up to 36 last months of monthly records

Storage time of measured total parameter values even if device is disconnected from power supply – not less than 15 years.

External communication modules and interfaces

Optical interface
The integrated optical interface port is located on the calculator’s enclosure front. It is designed for data reading and parametrization of meter via M-Bus protocol. The optical interface is enabled (activated) only after single press of the button on the meter front panel and automatically disabled when 5 minutes have passed either from last press of the button or since last data transmission.
Pulse outputs
The standard heat meter includes pulse outputs through which information about heat energy consumption, cooling energy consumption, or working medium volume could be send

• Number and class of pulse outputs: 2 (OB – in normal mode, OD – in test mode)
• Pulse output type: open collector (max permissible current up to 20 mA; max voltage up to 50 V)
• Pulse time width: 125 ms – in normal mode; 1.2 ms – in test mode

Table 2.3. Energy pulse values at the pulse output in normal mode

Table 2.4. Volume pulse values at the pulse output in normal mode

Flow sensor nominal flow q p| 0.6; 1; 1.5; 2.5; 3.5; 6 m 3/h| 10; 15; 25; 40; 60 m 3/h
---|---|---
Pulse value| 1 l/pulse| 10 l/pulse

Optional plug-in modules

• M-Bus module
• Radio wM-Bus module (868 MHz)
• Modbus RTU module (RS-485)
• BACnet module (RS-485)

M-Bus module
Designed for data reading and programming the meter via M-Bus protocol. The total working time of the serial communication interface is limited to 200 minutes a month (for protection of the battery against premature discharge). Unused communication time limit is summarized. Once the communication time limit has been spent, the interface is locked out till new time limit for communication will be given (16 seconds for each next hour).
Power supply
The standard version of meter has one AA-size battery (3.6 V; 2.7 Ah; Li- SOCl2) installed inside the calculator. The minimum battery life is 11 years, including the voltage required for operation of the pulse outputs. The meter can be equipped with up to two batteries. As an option meter could be equipped with external power supply module (12-42 V DC or 12-36 V AC 50/60 Hz,10 mA max). The power supply module is installed inside the calculator in place designated for second battery. In such case meter has one AA-size battery (3.6 V; 2.7 Ah; Li-SOCl2) inside with a minimum battery life of 11 years (not including the voltage drain by reading of optional communications modules) and powers the meter whenever the external power source is turned off. An optional power adapter (230 V 50/60 Hz / 12 V AC) is available separately with a cable which total length is 2.5 m to feed the external power supply module.

Mechanical specification

• Calculator dimensions: 117 × 44 × 89.5 mm
• Flow sensor dimensions: see Appendix B
• Total meter weight: see Table 2.5.

Table 2.5. Weight of meters

• Environmental class: C according to EN 1434

Ambient temperature:

• calculator from +5°C to +55°C (condensing, indoor installation)
• flow sensor from -30°C to +55°C
• Relative humidity : < 93
• Mechanical environment class: M1
• Electromagnetic environment class: E2
• Calculator enclosure ingress protection rating: IP65
• Flow sensor enclosure ingress protection rating: IP65 (IP67 available on custom order)

Operating principle

The flow measuring principle is based on ultrasonic measurement method. The ultrasonic signal is transmitted alternately in either of the two directions along the measurement part. The flow value is calculated from the transition time difference between the ultrasonic waves with identical wavelength that was send in the right and opposite direction. The working medium temperature is measured with standard Pt500 platinum resistive temperature sensors. Pairs of temperature sensors with 2-wire connection method for measurement temperatures on flow and return pipelines are used. Flow and return temperature sensors can only be replaced on the factory-made pairs. In normal mode the flow volume measurement is done every 1 second, and the temperature measurement, energy value calculation and refresh of the values indicated on LCD are done every 16 seconds.

Energy calculation formulas:

• flow sensor in supply pipe: Q = V1 × ρ1 × (hT1 – hT2)
• flow sensor in return pipe: Q = V1 × ρ2 × (hT1 – hT2)

where:

• Q – thermal energy
• V1 – water volume (m3)
• Θ1 – supply temperature
• Θ2 – return temperature
• ρ1 / ρ2 – water density at supply temperature Θ1 / return temperature Θ2
• hT1 / hT2 – enthalpy at supply temperature Θ1 / return temperature Θ2

When cooling energy measurement is enabled and the temperature difference is negative (supply temperature < return temperature) with the value above 0.15 K then the cooling energy values will be written in the additional register:

• ΣQ = Q1 + Q2
• Q1 – heat energy
• Q2 – cooling energy

flow sensor in supply pipe:

• when Θ1 > Θ2: Q1 = V1 × 1 × (hT1 – hT2), Q2 = 0
• when Θ1 < Θ2: Q2 = V1 × 1 × (hT2 – hT1), Q1 = 0

flow sensor in return pipe:

• when Θ1 > Θ2: Q1 = V1 × 2 × (hT1 – hT2), Q2 = 0
• when Θ1 < Θ2: Q2 = V1 × 2 × (hT2 – hT1), Q1 = 0

The meter’s calculator provides all the necessary measurement and data storage functions.

Marking and sealing

Marking

Calculator

There are following information on the front panel of calculator: manufacturer’s trade mark, meter type, temperature sensors type, calculator temperature measuring range, calculator temperature difference measuring range, flow sensor temperature range, nominal/maximum/minimum flow rate (qp/qs/qi), year of manufacture, connection type and size, nominal and maximum admissible working pressure, device ingress protection rating, accuracy class, environmental class according EN1434-1, electromagnetic and mechanical environmental class, EC-type examination certificate number, flow sensor mounting place (supply or return pipe), type of working medium and concentration (if other than water), serial number and distributor’s logo (if applicable). The terminal pins numbers are marked close to the terminal which is inside the calculator.

Flow sensor
The flow sensor is marked with the following information: connection type to the pipeline (threaded connection – G, flanged connection – DN) and size, the arrow for indication of a proper flow direction of working medium.
Security seals
The manufacturer provides the following security measures for the calculator:

• the manufacturer’s warranty seal preventing access to the adjustment activation jumper (see Fig. 12.1.);
• the manufacturer’s warranty seal on the fastener of the cover protecting electronic module (see Fig. 12.1.).

The manufacturer provides the following security measures for the flow sensor:

• the seals on the screws of protective cover of flow sensor (see Fig. 12.2. – Fig. 12.4.).

After installation of the meter the installer shall mount following seals:

• butterfly, wire or lead seals to bind the lid and bottom part of the calculator enclosure (see Fig. 12.1.);
• seals on the pockets and mounting socket of the temperature sensors (see Fig. 12.6. and Fig. 12.7.);
• additionally flow sensor’s connection with the pipeline should be sealed as well (for example with couplings)

The meter must be sealed once it has been installed to prevent unauthorized dismantle, removal, or altering of device without evident damage on the meter or its seals.

Installation

Basic requirements
The meter has been designed for operation in heating or heating and cooling systems. Pre-installation checks:

• check if all parts listed in the meter’s documentation are available,
• check if there are no visible mechanical defects on device,
• check if there are valid rating plate, undamaged manufacturer’s warranty seals and required by certification authority labelling.
• The flow direction shown by the arrow on the flow sensor body must match the actual flow in metering circuit. The heat meter must be installed on the correct pipe (supply or return), as indicated by the icon (see Fig. 5.1.) placed on the rating plate on the meter enclosure

If the meter is designed for the supply-side installation, install the supply temperature sensor in the flow sensor body (for sizes DN15 to DN20) or in a tee / ball valve mounted next to the flow sensor body (for sizes DN25 to DN100) and the return temperature sensor should be mounted on the return pipe. If the meter is designed for the return-side installation, install the return temperature sensor in the flow sensor body (for sizes DN15 to DN20) or in a tee / ball valve mounted next to the flow sensor body (for sizes DN25 to DN100) and the supply temperature sensor should be mounted on the supply pipe. Only qualified personnel may install the meter, following the requirements listed in this document, in technical documentation of other system components and in meter installation project. Do not place the meter’s wiring / cables less than 5 cm away from power cables of other equipment. Do not change length of provided with the meter cables in order to extend or reduce they lengths.

Electrical wiring

Temperature sensors connection

Factory-installed sensors

Do not reduce or extend the length of the wiring of the factory-installed temperature sensors. If the connection terminals inside the calculator are accessible, installation cables can be temporarily disconnected from terminals and reconnected afterwards in exactly same order. Before installation of the temperature sensor in a tee or ball valve, verify that accessories installation socket match the temperature sensor depth and diameter (see the dimensions in Fig. 5.2.).
Caution: Using installation accessories that do not meet these requirements may damage the temperature sensor! Installation of the directly mounted temperature sensor should be started from placing the o-ring on the tool tip of mounting aid and after that with a rotary movement of the mounting aid insert o-ring in the installation socket of temperature sensor. Next adjust the o-ring into its final positon by using the other end of the mounting aid. If the temperature sensors are delivered with plastic bolt then position the inner bar of the half shell screwing into the surrounding crimp of the sensor enclosure and press two half shells firmly together. Thread the temperature sensor into the seat with a wrench and tighten to 3-5 Nm (see Fig. 5.2.). When installation is finished seal the temperature sensor by passing the seal wire through the drilling of the half shelf screwing and the installation fitting.
Caution: If the temperature sensor has been removed, always reinstall it with a new o-ring!

Customer temperature sensors
Only approved and matching pairs of temperature sensors with 2-wire connection method could be used. Customer temperature sensor connection procedure:

1. Before installation check that the temperature sensors are paired with each other (T1 with T2).
2. By means of pliers remove the protective caps from the two leftmost sealant holes in the bottom part of calculator enclosure (hole 1 and 2).
3. Insert the wire of supply temperature sensor T1 wire through the hole 1 and the return temperature sensor T2 wire through the hole 2.
4. Use 2-wire connection method of temperature sensor connection and connect the supply temperature sensor T1 to terminals 5 & 6, and the return temperature sensor T2 to terminals 7 & 8 (see Fig. 10.1.).

Installation of expansion modules in the calculator
The expansion modules for the heat and cooling meter are supplied in form of PCBA (printed circuit boards) packed in anti-static protective foil. Handle the devices carefully after taking them out of the protective foil. The circuit boards may only be touched on the edges and should be mounted in the meter immediately after removing them from the anti-static foil. Do not recharge or short-circuit additional batteries supplied with the M-Bus and wM- Bus communication modules (to extend operating life of the meter with communication module to 11 years) and factory-installed in the calculator. Keep the batteries away from contact with water and do not exposed them to temperatures above 80°C.

Installation of the M-Bus module

Module installation procedure:

1. Remove the installer’s security seals from the calculator enclosure.
2. Open the calculator’s lid by releasing the black latches on the left and right side of the enclosure.
3. Put the module into designated contact socket (see Fig. 5.3.). The contact pins of module must not be bent.
4. Fix the board of the module to the calculator body with two fixing screws supplied with the module.
5. Install the additional battery in the second battery holder and connect the module plug to the second battery connector.
6. By means of pliers remove the protective cap from the rightmost sealant hole in the bottom part of calculator enclosure.
7. Insert the data communication cable in sealant hole and route the cable through an available cable fittings and make a strain relief protecting wire against being pulled out from the outside.
8. Connect the data communication cable wires to the screw terminals on the M-Bus module (bipolar connection). For full description of screw terminal assignment used in communication modules see Table 10.2.
9. Close the lid of the calculator, fasten the latches on the sides of the calculator enclosure and mount again the installer’s security seals.

M-Bus module enables reading the heat and cooling meter via its primary address (default: 0) or secondary address (default: meter serial number) over a wired M-Bus network. Default baud rate: 2400 bps, data format: 8E1 (8 data bits, even parity, 1 stop bit).

Installation of the radio wM-Bus module
Module installation procedure:

1. Follow steps from 1 to 5 described in “Installation of the M-Bus module” procedure.
2. Remove the jumper from the pins of the radio wM-Bus module, if jumper is installed (see Fig. 5.4.).
3. Close the lid of the calculator, fasten the latches on the sides of the calculator enclosure and mount again the installer’s security seals.

The data can be read by the radio module using the radio number (stored in the calculator and by default set to meter serial number) and the decryption key that could be found on label affixed under the flap of the meter unit packaging (if device was purchased with factory installed

module) or under the flap of the radio module unit packaging (if module was purchased separately). The radio module starts sending data telegrams only after the meter has recorded a minimum 20 liters of volume by the flow transducer.

Installation of the Modbus/BACnet module

Module installation procedure:

1. Follow steps from 1 to 4 described in “Installing the M-Bus module” procedure.
2. By means of pliers remove the protective cap from the rightmost sealant hole in the bottom part of calculator enclosure.
3. Insert the data communication cable in sealant hole and route the cable through an available cable fittings and make a strain relief protecting wire against being pulled out from the outside.
4. Connect wires of data communication cable to the screw terminals of the Modbus/BACnet module according assignment from Table 10.2.
5. Install the external power supply module according to procedure in p. 5.2.6. and connect additional power cable from external power supply module terminals to the power supply terminals on the Modbus/BACnet module (see Fig. 5.5). The connection is bipolar. For full terminal assignment of the external power supply module see Table 10.2.
6. Follow steps from 11 to 13 described in p. 5.2.6. concerning Installation of the external power supply module.
7. Close the lid of the calculator, fasten the latches on the sides of the calculator enclosure and mount again the installer’s security seals.

The Modbus/BACnet module enables reading the data from the heat and cooling meter with an EIA-485 (RS-485) interface over a wired Modbus/BACnet network. Default settings: baud rate: 2400 bps, data format: 8E1 (8 data bits, 1 stop bit, parity bit), device address: 1 (slave ID), transmission data update time: 10 minutes. A single network can include a maximum of 256 devices. The module has a “PWR” LED indicating the power supply of the module and “LINK” LED which is flashing when a query is received or a response is transmitted to indicate communication with the Modbus/BACnet network. Module is equipped as well with „SET” button that could reset module to factory settings (transmission baud rate, data format, device address and transmission data update time). To restore default settings in module you should disconnect it from the power supply source, press the “SET” button and turn on power supply again without releasing the button, which should be hold for at least 15 seconds until the “LINK” LED start to blink steadily. The module has a factory reset button which, when pressed and held for more than 15 seconds, restores all default settings (transmission baud rate, data format, device address and transmission data update time).

Power supply for the Modbus/BACnet module

• Voltage: 12-24 V DC
• Typical supply current: 50 mA
• Maximum power consumption: 2 W
• Terminal numbering: 60 and 61 (bipolar connection)

Communication interface

• Modbus protocol type: RTU
• BACnet protocol type: MS/TP (ANSI/ASHRAE standard 135, version 1, revision 9; ISO 16484-5)
• Modbus data transmission baud rate: 1200, 2400, 4800, 9600, 19200, 38400, 56000, 57600, 115200
• BACnet data transmission baud rate: 9600, 19200, 38400, 57600, 115200
• Available data formats: 8E1, 8O1, 8N2
• Terminal numbering: 90 (+), 91 (-)

Installation of the external power supply module

Module installation procedure:

1. Remove the installer’s security seals from the calculator enclosure.
2. Open the calculator’s lid by releasing the black latches on the left and right-hand side of the enclosure.
3. Install the module in place of the second battery holder (see Fig. 5.6.).
4. Fix the board of the module to the calculator body with one fixing screw supplied with the module
5. Disconnect the connector plug of the battery installed in the meter from the battery connector and connect it directly to the module (see Fig. 5.6.).
6. Use a metal tool to short-circuit (for 1-2 seconds) both pins of the battery connector which you have just disconnected from the battery connector plug. This will unload the internal capacity of the meter bus.
7. Connect power connector plug of module to the meter’s battery connector. The LCD display should start indicating.
8. By means of pliers remove the protective cap from the spare sealant hole in the bottom part of calculator enclosure.
9. Insert the power cable (use a flexible two-wired cable 0.14-0.5 mm2, with outer diameter 4-6 mm) in sealant hole and route the cable through an available cable fittings and make a strain relief protecting wire against being pulled out from the outside (see Fig. 10.3.).
10. Connect wires of the power cable to the screw terminals of external power supply module (bipolar connection). Full terminal assignment of the external power supply module, see Table 10.3.
11. Install the configuration pin connector jumper in the test mode (see Fig. 6.7).
12. Use an optical interface to connect with the optical interface port on the meter’s calculator front panel. Press the button on the calculator front panel and connect with the meter with a dedicated service software suite to set the date and time (Current Readings tab) and disable the M-Bus data communication limit (Meter Configuration tab).
13. Remove the configuration pin jumper to disable the test mode and restore the normal operating mode of the heat and cooling meter.
14. Close the lid of the calculator, secure the side clasps of the calculator enclosure, and install the installer’s security seals in place.
15. Connect the power cable to the external power supply source. The green LED on the calculator front panel should be on – this indicates that the meter runs on external power.

The external power supply module provides possibility of powering meter with 12-42 V DC 12-36 V AC 50/60 Hz,10 mA max. When device is power supplied from an external source, the meter does not use the internal battery power. The internal battery power in such case is used only to keep the meter running when the external power supply source is turned off. The external power supply module can be powered by e.g. the optional 230 V 50/60 Hz / 12 V AC power adapter (see Fig. 5.7.). If you want to use it, connect the grey cable of the power adapter to the external power supply module terminals by passing it through a cable gland of thecalculator, and connect the black cable marked with label (230 V AC) to the 230 V 50/60Hz power mains. As the power adapter is powered by life-dangerous voltage value, so installation of the calculator in such configuration could be done only by qualified professionals when power supply is switched off.

Mounting

Mounting of calculator
The meter calculator must be installed in heated premises where the ambient temperature does not exceed 55°C. Keep the calculator away from direct sunlight.
There calculator could mounted in several different ways:

• Installation of the calculator directly on the flow sensor enclosure with possibility to rotate calculator 180° or 90° if special bracket is used (Note: it is possible to install the calculator directly on the flow sensor enclosure if the working medium temperature does not exceed 90°C)
• wall-mounted installation without possibility of mounting sealing
• wall-mounted installation with possibility of mounting sealing
• standard DIN-rail installation
• panel mounting

Important! Do not mount the calculator directly on a wall if there is a risk of humidity condensation on the wall or the wall surface temperature might fall below 5°C. In such case, it is recommended to install calculator with a minimum gap of 5 cm from the wall.

Mounting of flow sensor
Flow sensor sizes and mounting dimensions are provided in Appendix B. For flow sensors of the meter with nominal diameter DN65 to DN100 necessary straight pipeline length in upstream direction are  5 x DN and in downstream direction  3 x DN. For flow sensors DN50 and smaller the straight pipelines installation in upstream and downstream are not necessary. Avoid installation of the flow sensor near the pumps due to the risk of cavitation. The flow sensor can be mounted horizontal, vertical or inclined position on a supply or return pipeline. However the horizontal or inclined installation is allowed only when the working medium flows from bottom to top. The location and position of the flow sensor from DN25 to DN100 must be selected in way that is reducing the risk of air bubbles accumulation in the zone of ultrasonic flow sensor (see Fig. 5.13).

Flanged connections require proper sizing of the gaskets matching the piping diameter. During installation gaskets must exactly align with the centre of the pipe cross-section to avoid gasket protrusion into the piping passage that could obstruct the flow. Before installing the flow sensor, rinse the pipeline well mounting spacer instead of flow sensor for the time of flushing. Proper performance of the meter requires that the pipeline was pressurized, completely filled with the working medium and the flow direction shown by the arrow on the flow sensor body (see Fig. 5.14.) must match the actual flow in the metering circuit.

It is forbidden to wire flow sensor signal cables less than 5 cm away from wires or power cables of other devices.

Mounting of temperature sensors
The temperature sensors are mounted by head upwards, in perpendicularly to the pipe axis or inclined by 45° angle to the pipe position, so the temperature sensor tip reaches or crosses beyond the pipe axis (see Fig. 12.6.). For meters with G¾” and G1″ connections it is possible to mount one temperature sensor directly in the flow sensor body.

Setting up the jumper
The jumper pin connector is on the calculator PCB, between the temperature sensor screw terminals and the pulse input/output screw terminals (see Fig. 10.1.). Joining and opening the appropriate connector pins with the jumper lets you switch between the normal operating mode and the test mode of the meter, or transform pulse outputs into pulse inputs (see Fig. 5.15).

Verifying the installation and configuration
After installation of the meter, let the measured working medium flow through the flow sensor. The heat meter’s LCD should display the measured parameter values on the calculator display, if the heat have been properly installed (calculator, flow sensor and the temperature sensors). If the measured parameter values are not displayed correctly, it is necessary to verify the installation.

Sealing after the installation
The meter must be sealed once it has been installed as explained in p. 4.2 to prevent unauthorized dismantle, removal or altering the device without evident damage on the meter or its seals.
Installer’s security seals:

• butterfly, wire or lead seals to bind the top and bottom parts of the calculator enclosure (see Fig. 12.1.);
• seals on the protective pockets and the mounting bolts of the temperature sensors (see Fig. 12.2. to Fig. 12.7.);
• seal also the flow sensor’s connection with the pipeline ends (for example couplings).

Operation

Operating the LCD display
You can cycle through indications displayed on the meter LCD by pressing the control button in the lower part of the calculator front panel.

Display functions
The meter’s calculator has an 8-digit LCD display with icons of parameters, measurement units and operating modes.

Designation of icons:

• → forward (right direction) flow
• ← backward flow
• arrow not displayed no flow

Designation of other icons, see p. 6.3.1. to 6.3.3.
The following information can be presented on the LCD display:

• total values and instantaneous measured parameters,
• archived data with data write date stamps,
• device configuration.

If the meter control button is not pressed for over 60 seconds, the LCD display will return to the heat energy consumption indications (1.2), unless there is a problem with meter. In such case LCD indicates error code screen (1.1).
Menu structure Viewing the readings in normal mode (user’s menu)
The menu structure in a normal operating mode is presented in Fig. 6.3 . Remark: The following (Table 6.1) shows the full list of the parameters that can be displayed on the meter’s LCD. The menu structure of your device might be reduced, depending on the meter configuration and type.

Table 6.1. Parameters available on the heat and cooling meter LCD display

Note: The values of parameter marked with “*” can be modified during installation of the meter. Modification of them is possible via optical interface in conjunction with the dedicated service software when test mode is activated in the meter (see the applicable jumper setting in p. 6.4). You can also disable in the very same manner indication on LCD of irrelevant parameters to the user. If “Display indication” column shows more than one screen for selected parameter, that means that screens will be presented every second.
Test mode reading display (service menu)
The test mode menu structure is presented in Fig. 6.4.

Table 6.2. Test mode reading display (service menu)

Error codes
An error code can have up to 4 characters. Each character is a hexadecimal value from 0 to F.

Table 6.3. Description of heat/cooling meter errorsIf more than one error has been detected in meter, the error codes are summed according hexadecimal system and displayed:

• 3 = correspond to sum of errors: 2 + 1
• 5 = correspond to sum of errors: 4 + 1
• 7 = correspond to sum of errors: 4 + 2 + 1
• 9 = correspond to sum of errors: 8 + 1
• A = correspond to sum of errors: 8 + 2
• B = correspond to sum of errors: 8 + 2 + 1
• C = correspond to sum of errors: 8 + 4
• D = correspond to sum of errors: 8 + 4 + 1
• E = correspond to sum of errors: 8 + 4 + 2
• F = correspond to sum of errors: 8 + 4 + 2 + 1

In a case when value of at least one digit of error code is ≥ 8, the thermal energy calculation and summation of the working medium volume and operation time without errors are stopping. In a case when value of the flow sensor error is equal 4, duration of time when the flow rate exceeds  1.2 × qs is registered additionally.

Test mode Destination of connector configuration pins
The 2-line 10-pole configuration connector is on the calculator PCB, located between the temperature sensor screw terminals and the pulse input/output screw terminals (see Fig. 10.1.). The configuration pins destination is presented in Fig. 6.6.

Activating test mode (verification)
In the test mode it is possible to achieve precise results within short measuring time. For activation of the test mode open the meter, remove all jumpers from the configuration pin connector and set up one jumper as shown in Fig. 6.7.

When the jumper is set the meter enters the test mode, which is indicated by the word “TEST” on the LCD display. The meter stops calculation process and all integral parameter values are saved in the memory. When the test mode is deactivated and the normal operating mode is restored the meter displays the original values saved in the memory of device before the test mode activation. The meter readings in the test mode are shown in p. 6.3.2.
Table 6.1. LCD resolution in the test mode

Table 6.2. Energy and volume pulse values in the test mode

Nominal flow q p

| Volume (pulse value)| Energy (pulse value)
---|---|---
kWh / MWh| GJ| Gcal
0.6 m3/h| 0.002 l/pulse| 0.1 Wh/pulse| 0.5 kJ/pulse| 0.1 kcal/pulse
1.0 m3/h| 0.002 l/pulse| 0.2 Wh/pulse| 1.0 kJ/pulse| 0.2 kcal/pulse
1.5 m3/h| 0.004 l/pulse| 0.2 Wh/pulse| 1.0 kJ/pulse| 0.2 kcal/pulse
2.5 m3/h| 0.005 l/pulse| 0.5 Wh/pulse| 2.0 kJ/pulse| 0.5 kcal/pulse
3.5 m3/h| 0.020 l/pulse| 1.0 Wh/pulse| 5.0 kJ/pulse| 1.0 kcal/pulse
6.0 m3/h| 0.020 l/pulse| 1.0 Wh/pulse| 5.0 kJ/pulse| 1.0 kcal/pulse
10.0 m3/h| 0.050 l/pulse| 2.0 Wh/pulse| 10.0 kJ/pulse| 2.0 kcal/pulse
15.0 m3/h| 0.050 l/pulse| 5.0 Wh/pulse| 20.0 kJ/pulse| 5.0 kcal/pulse
25.0 m3/h| 0.050 l/pulse| 5.0 Wh/pulse| 20.0 kJ/pulse| 5.0 kcal/pulse
40.0 m3/h| 0.200 l/pulse| 10.0 Wh/pulse| 50.0 kJ/pulse| 10.0 kcal/pulse
60.0 m3/h| 0.200 l/pulse| 10.0 Wh/pulse| 50.0 kJ/pulse| 10.0 kcal/pulse

Deactivating test mode
Removing the jumper from the configuration pin connector disables the test mode and restores the normal mode. Once the test mode has been disabled, the meter displays previously recorded integral parameter values.
Remote data reading

• The data can be read from meter directly with an optical interface. The optical head is placed on the optical port located on the front panel of calculator and cable of interface is connected to a PC.
• For remote reading of data from meter two integrated pulse outputs can be used or one of the following optional communication modules: M-Bus module, radio wM-Bus 868 MHz module, Modbus RTU module (RS-485), BACnet MS/TP module (RS-485), current loop (CL) module. Pulse outputs
• The pulse outputs are activated when the corresponding configuration pins are open (see. Fig. 5.15).
• All communication interfaces do not affect the measured parameters and calculations, therefore can be installed and replaced with other type of module without removing meter’s verification seals.
• The data can be collected from meter via PC, telephone modem, GSM modem, the Internet and so on.

Metrological verification

The metrological control of the meter is performed according to requirements defined in EN 1434-5.

Storage and transport requirements

• Check the relevant technical documentation for the requirements of safe transport and storage of temperature sensors.
• Packed devices may be transported by any type of covered vehicle. Devices should be anchored reliably to avoid shocks and shifting inside the vehicle during transport.
• Devices should be protected against mechanical damage and shock.
• Keep the devices in dry, heated premises, where an ambient temperature is not lower than +5°C. Do not store the meters with aggressive chemicals due to a risk of corrosion.

Warranty

The manufacturer guarantees that the meter parameters will meet the technical requirements listed in the paragraph 2 of this document, if transport, storage and operating conditions will be followed.

Manufacturer’s address: **** Apator Powogaz S.A., ul. Klemensa Janickiego 23/25, 60-542 Poznań, Poland tel. +48 (61) 84 18 101; fax +48 (61) 84 70 192

Appendix A

Table 10.1. Numbering of the calculator screw terminals

(volume value output in the test mode)

52| Pulse input/output 1 (GND)
53| Pulse input/output 1 (IN/OUT 1)

(energy value output in the test mode)

Table 10.2. Numbering of the screw terminals for the optional communication modules

Table 10.3. Numbering of the screw terminals for the optional external power supply module

Appendix B

Fig. 11.2. Flow sensor qp = 0.6; 1.0; 1.5 m3/h
Fig. 11.3. Flow sensor qp = 1.5; 2.5 m3/h

• G¾“ threaded connection G1“ threaded connection
• installation length L = 110 mm installation length L = 130 mm

Fig. 11.4. Flow sensor qp = 0.6; 1.0; 1.5; 2.5 m3/h
Fig. 11.5. Flow sensor qp = 0.6; 1.0; 1.5; 2.5 m3/h

• G1“ threaded connection DN20 flanged connection
• installation length L = 190 mm installation length L = 190 mm

Appendix C
Locations of security seals

1. manufacturer’s approval seal: a sticker on the adjustment activation jumper
2. manufacturer’s warranty seal: a sticker on the fastener of cover protecting electronic module
3. installer’s security seals: butterfly, cable or lead seals to bind the lid and bottom part of the calculator enclosure

• threaded / flanged connection threaded / flanged connection
• installation length L = 110 mm; 130 mm; 190 mm installation length L = 260 mm
• manufacturer’s approval seal: stickers on the flow sensor protective cover screws
• threaded / flanged connection flanged connection
• installation length L = 300 mm installation length L = 270 mm; 300 mm; 360 mm
• manufacturer’s approval seal: stickers on the flow sensor protective cover screws

Environmental protection
Do not dispose of with regular waste/trash. Take the product to a WEEE collection point for disposal. You will help protect the natural environment.

CONTACT

• Apator Powogaz S.A.
• ul.Klemensa. Janickiego 23/25, 60-542 Poznań, Poland
• tel.: +48 61 84 18 101,
• fax: +48 61 84 70,192
• www.apator.com.

References

• Grupa Apator - Inteligentne idee dla lepszego jutra
• Grupa Apator - Inteligentne idee dla lepszego jutra

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