B meters HYDROCAL-M4 Istruzioni per il montaggio

Subject to change without prior notice

The HYDROCAL-M4 is a compact thermal energy meter that measures the energy consumption of heating and

cooling systems. The meter allows to measure the thermal energy passing into a hydraulic circuit used for

heating and\or for cooling, it also lets the acquisition through external module, of the volume measured by up

to 2 device (water, heat, gas, electricity, HCA) equipped with pulse emitter. The meter can also be connected to a

consumption reading network based on the wired M-BUS (IR-MB-PULSE), Wireless M-BUS and LoraWan protocols.

The product must be stored in a dry place at temperatures between -20 °C and +70 °C (even during transport).

The duration of the storage should not exceed 1 year.

Combined heating or cooling meters are precision devices and must be protected from shock and vibration.

STORAGE CONDITIONS

1. Introduction

WARNING

• Before proceeding with the installation and conﬁguration of the product, carefully read the instructions in

this manual. For further technical clariﬁcation, please contact Customer Service.

• Installation should be carried out exclusively by qualiﬁed personnel.

• The reference standard for the instrument is EN 1434 and Directive 2014/32/EU (Annex MI-004).

• Any tampering of the meter or removal of the seals will void the warranty provided.

• For proper energy accounting, always respect the mounting type prescribed (inlet pipe installation/ return

pipe installation).

• The conﬁguration of installation version and unit of measurement can be done with the buttons or an

Android device with NFC connectivity.

• Respect the installation point (input or output) of the instrument.

GENERAL INFORMATION

PACKAGING CONTENT: HYDROCAL-M4, installation manual, antifraud kit.

HYDROCAL-M4 •Operating and Installation Instruction v1.3

13.09.2023

The ﬁrst conﬁguration chosen during installation (supply or return pipe) can’t be modiﬁed!

The top calculation/electronic unit must not be separated from the bottom brass case.

This meter contains dangerous batteries, handle it with caution and do not disperse in the environment.

The installation must be carried out by qualiﬁed personnel only. The manufacturer doesn’t assume any

responsibility for improper installation or damages caused by third parties.

2. Safety information

Warning: highlights the instructions to be followed scrupulously for the correct functioning of the meter.

Danger: highlights important precautions to follow in order to avoid dangerous situations.

Notes: highlights important information for a proper experience while using the device.

Read all instructions carefully before proceeding with the installation! Failure to comply with one or more of the procedures

contained in the manual can be dangerous and cause damage to property and people. It is recommended to comply with

all applicable laws on safety and accident prevention.

2Subject to change without prior notice

Observe national regulations relating to the measurement of cooling.

Observe the technical requirements relating to the installation of electrical equipment.

The instrument complies with the requirements of Directive 2014/30/EU of the European Council on electromagnetic

compatibility, Directive 2014/35/EU on electrical safety and Directive RED 2014/53/EU.

If more than one instrument is installed in a unit, the installation conditions must be the same for all instruments to

ensure that consumption is as equal as possible.

The warranty and validity of the veriﬁcation become void if the identiﬁcation plate or the seals applied to the instrument

are removed or damaged.

Remove the device from the package only at the time of installation to protect it from damage and dirt.

The air transport of active radio devices is prohibited.

Carefully observe the instructions in the data sheet, instruction manual, application notes and lid. Failure to comply with

the operating conditions may result in situations of danger and forfeiture of all claims of liability for defects as well as

liability based on any guarantees expressly granted. For more information visit the website www.bmeters.com.

Dispose of replaced devices and defective components in accordance with current environmental regulations.

Store out of the reach of children.

Wear protective gloves and pay attention to the sharp protrusions in the threads, flanges and measuring tube.

The device shall be used in such a way as to minimize the potential for human contact during normal operation. To avoid

the possibility of exceeding radio frequency exposure limits, human proximity to receivers with integrated antenna should

not be less than 20 cm (8 inches) during normal operation.

Do not expose the meter to the sun and heat sources. Do not attempt to burn the device.

In case of danger of frost, empty the system and, if necessary, remove the meter.

To clean the device externally use a soft cloth and moistened with water. Do not wash with high-pressure jets or soak the

device in water. Avoid contact with oils and solvent. Do not use alcohol or detergents.

Do not damage the casing of the device. In the event of collisions of blunt objects on the front of the display, it can be

irreparably damaged and lose the IP65 degree of protection. Install in areas protected against impacts. If the protective

casing breaks, contact customer service.

The display stays inactive. To activate it, press the button on the device. The display remains active for 60 seconds.

The meter is not suitable for drinking water but is suitable for circulating water in central heating systems.

Do not twist, wrap, extend or shorten the cables of the temperature probes and the cable that connects the electronic unit

to the part of the lower-case body.

The thermal energy meter can be installed only in areas protected from frost.

The thermal energy meter must be protected against pressure shocks in the pipeline.

Slowly ﬁll the pipe with water at the end of the installation.

After installing the meter perform a leak test of the system.

Assemble or disassemble the meter only after depressurization of the system.

The meter does not have lightning protection.

Thermal energy meters do not require special protection against electrical interference; however, electromagnetic

interference must be avoided.

Subject to change without prior notice

If transmission network interfaces are used, especially when cables are routed outside the building, use increased

protection against electrical interference.

Rinse the pipes thoroughly before installing the meter.

For a proper installation the direction of the arrow on the lower brass body must match the direction of the ﬂow.

Avoid collecting air bubbles in the meter during the installation process.

The thermal energy meter must not be subjected to mechanical stress when installed in the pipeline.

The meter must be installed in such a way as to be protected from all impurities and external contamination.

Manually and simultaneously screw the device ﬁttings on both sides, and then tighten in opposite directions using a

suitable device.

Remove old seals and clean the sealing surfaces.

Slightly grease the sealing surfaces (use grease approved by MID Standards).

Mount only the supplied gaskets (gaskets should not get in the pipeline). Seals provided on site must be ﬁt for purpose and

comply with local guidelines and directives. B METERS is not liable for any damage resulting from the use of third-party

gaskets (corrosion of sealing surfaces and threads).

Problem Cause Solution

Display o, pressing buttons does

not respond The battery may be damaged or discharged

Inform Customer Service

Damaged container, or leakage Possible external impact or fall to the ground

Lower case brass separated

by electronic unit Tampering by third party or strong external impacts

Open and visible electronic unit

No consumption is accounted Tampering by third party, strong external shocks or damage

to the ﬂow detection sensor

Error 12 always present Damaged temperature probes

Error 18 or 19 always present Damaged temperature probes or out of system temperatures

limits

Does not transmit via radio Failure to pass 5 absolute liters or the batteries may be

damaged or discharged

TROUBLESHOOTING

BEFORE INSTALLATION

3. Installation

Before the thermal energy meter installation make sure that the two ends of the inlet and outlet pipe are

perfectly aligned, clean them with the utmost care. Moreover, make sure there is a suitable ﬁlter placed at

the inlet and that clean and undamaged gaskets are inserted on both sides. The thermal energy meters must

be installed as speciﬁed by the CEN-TR 13582 regulation. Upstream and downstream the meter install an

appropriate water ﬂow interception and regulation devices suitable to allow inspection and maintenance of the

meter, control of the water ﬂow and eventual sealing of the system.

4Subject to change without prior notice

All versions of the thermal energy meter can be

installed both horizontally and vertically. For a better

performance it is preferable, however, the horizontal

installation with the turbine axis perpendicular to the

ground and the reading mechanism facing upwards.

Ideal position Additional allowed positions

* This position is not suggested for cooling meters and for instances where moisture can enter the

electronic casing due to condensation (e.g. during an interruption of the plant in the summer)

Attention should be paid to the direction of ﬂow. Install the thermal energy meter so that the passage of water takes place

in the direction indicated by the arrow in relief on the brass body and respecting the prescribed position.

To ensure proper measurement, make sure that there is no air inside the pipe and that the ﬂow is clean and free of debris

(potentially harmful to the meter turbine).

It is mandatory to comply with the prescribed type of assembly (return pipe\supply pipe).

Always refer to what is on the meter menu 3 level 06. The ﬁgure below refers to a standard version of the device

installation (mounting on return pipe) and positioned horizontally.

For a correct installation, always proceed in compliance with the directives prescribed by current regulations.

TEMPERATURE SENSOR INSTALLATION

The meter is equipped with two digital probes compliant with: MID 2014/32/EU directive and EN1434 standard.

In the standard version (e.g mounting on return pipe), the return probe is already incorporated inside the brass

case. The supply probe must be installed in a ball valve or in a socket mounted on the ﬂow pipe and complies

with the requirements of the sensor itself.

Vice versa, the version for installation on the inlet pipe the probe inserted inside the brass case will be the ﬂow,

the return probe will need to be installed in a valve or a socket on the return pipe.

Before installing the ‘free’ probe (the one not inserted in the meter case), it is necessary to intercept the ﬂow (close the

ball valve or the appropriate shutters).

Subject to change without prior notice

For a correct temperature measurement, the tip of the probe must be in the center of the pipe. In addition, the axis of the

probe must be perpendicular to the pipe axis (see ﬁgure).

The temperature sensor must be sealed when the installation is complete.

INSTALLATION IN A SOCKET BALL VALVE INSTALLATION

The HYDROCAL-M4 is equipped with dedicated sections for the measurement of thermal energy of a heating/

cooling circuit and the volume measurement given by the domestic hot and cold-water meters. The meter is

suitable for domestic applications with two-pipe systems, in a thermal power plant or any other compatible

application.

1. Screw the socket in the pipe

2. Insert the temperature sensor

3. Tighten the screw

1. Insert the probe into the threaded nut

2. Insert the closing pin

3. Unscrew the valve closing screw, and place the seal

4. Insert the probe by screwing it on the thread

4. Functionality

In residential systems, usually with two pipes systems, the measurement of thermal energy takes place on

a single section both in heating and cooling cycle. The picture below reports a typical connection diagram

(installation on return pipe):

6Subject to change without prior notice

5. Display and buttons

The device is equipped at the front with an LCD and two buttons (T1 and T2), useful for device initialization and

readings.

1) Eight-digit numeric ﬁeld;

2) Single-digit numeric index (menu level);

3) Heating data index;

4) Cooling data index;

5) Circuit 1-2 pulse emitter (external module);

6) Return temperature index;

7) Indicator of sub level presence;

8) Supply temperature index;

9) Battery level indicator;

10) Faults or NFC/IR active communication indicator;

11) Flow presence indicator;

12) M-Bus wired communication data index;

12+13) Wireless M-Bus data index;

13) LoRaWAN communication data index;

14) Historical index;

15) Pulse value index (k);

16) Measurement unit index;

T1) Levels selection button;

T2) Scroll button within the selected level.

6. Commissioning

Premise: before a functional tests, the procedures indicated in this paragraph must be performed for completing

the physical installation phases including the connections.

The device is delivered in sleep mode and it must be conﬁgured if not requested during the ordering phase.

The ﬁrst conﬁguration chosen during installation (supply or return pipe) can’t be modiﬁed!

Long press

T2 button

Set mode

with both

buttons

Set unit

with both

buttons

Long press

T2 button

Long press

T2 button

Long press

T2 button

Subject to change without prior notice

Press T2 button for three seconds to initialize the device, if the installation version and the unit of measurement have

already been conﬁgured as requested during the order.

1. Installation version (set Mode): select, through the left/right button (T1/T2), the type of installation

(supply or return). Holding down the right button for 3 seconds can temporarily conﬁrm the choice made by

switching to level 2 (unit of measurement). If the T1 button is pressed for 3 seconds the device will return to

stock mode showing ‘SLEEP’ on display.

If the activation takes place with buttons, the items in the menu will be two:

2. Units of measurement (set Unit): select through the left/right button (T1/T2), one of the following items: 1

(Joule), 2 (MJ), 3 (GJ), 4 (kWh), 5 (MWh).

Holding down the right button for 3 seconds can temporarily conﬁrm the choice made by switching to level

2 (unit of measurement). If the T1 button is pressed for 3 seconds the device will return to stock mode

showing ‘set Mode’ on display.

NOTE: after conﬁrmation the thermal energy meter will perform the initialization for heating and cooling

accounting. The unit of measurement can be changed later via NFC through the BMetering NFC Conﬁg app

for Android operating systems.

INITIALIZATION (Installation version and measuring unit already conﬁgured)

x=1

x=2

1) Check that the mounting position of the thermal energy meter and all electrical wiring are carried out

correctly

2) Check if the device is conﬁgured, otherwise set the installation version and the unit of measurement

3) Check at level 3 that all conﬁgured parameters are correct (heating and cooling data)

4) Check that the thermal energy meter, pulse devices, probes etc. are installed correctly (refer to the speciﬁc

installation manuals for each product)

5) Start the heating/cooling system:

→ Check the consistency of the reported values (energy and volume)

→ Check in level 2 the instant data

6) Check for errors

7) Apply installation seals. It’s recommended to lock the device with a password set through the BMETERING

NFC Conﬁg android app (downloadable from the Google Play Store).

PROCEDURE FOR COMMISSIONING

8Subject to change without prior notice

7. Consultation menu

The consultation menu is divided into 9 levels by a numerical index always visible at the top left of the display.

By pressing the T1 button you can choose the desired level, while pressing the T2 button you can view the

sublevels of the preset level. After 60 seconds without iteration the display turns o. If no button is pressed

within 20 seconds (with the display o) the display cycle will start again from level 1. If a button is pressed

within 20 seconds (with the display o) the last level consulted will be displayed. In any level or sublevel,

holding down the T1 button for 3 seconds will direct the index to level 1. To access to a sublevels, where present

(indicate by the symbol ‘–‘), it is necessary to hold down the T2 button for 3 seconds. To return to a main level

from a sublevel it’s necessary to hold down the T2 button again for 3 seconds. Each level consists of a brief

indication in letters of the data that will be shown after a few seconds in a second screen.

1.1 HEAT J, MJ, GJ, kWh, MWh

1.2 COOL J, MJ, GJ, kWh, MWh

1.3 HEAT m�

1.4 COOL m�

1.5 ABSOLUTE m�

1.6 FORWARD m�

1.7 REVERSE m�

1.8 IN 1 J, MJ, GJ, kWh, MWh, Unit

1.9 IN 2 J, MJ, GJ, kWh, MWh, Unit

1.10 LOST m�

2.1 POWER H kW

2.2 POWER S W

2.3 HEAT J, Wh

2.4 FLOW m�/h

2.5 TEMP. SUPPLY °C

2.6 TEMP. RETURN °C

2.7 TEMP.DIFFERENCE °C

2.8 TEMP. AMBIENT. °C

3.1 SERIAL NUMBER

3.2 CRC FW

3.3 MAIN FW

3.4 RADIO FW

3.5 DISPLAY FW

3.6 INSTALL TYPE Supply, Return

3.7 DATE

3.8 TIME

3.9 UNIT 1,2,3,4,5

3.10 MODULE On, O

3.10.1 SERIAL Module’s serial number

3.10.2 FIRMWARE Module’s ﬁrmware

3.10.3 DATE

3.10.4 TIME

3.10.5 POLLING Synchronization interval

3.10.6 NEXT Next synchronization

3.10.7 LOST Missed communications

3.11 IN 1-2

3.11.1 IN 1 On, O

3.11.2 PULSE RATE Type of pulse

3.11.3 START VALUE Type of pulse

3.11.4 MEDIUM Type of pulse

3.11.5 IN 2 On, O

3.12 MBUS On, O

3.13 MONTHLY SAVE DAY

3.14 BIWEEKLY SAVE DAY

3.15 DATE SAVE MEM1

3.16 DATE SAVE MEM2

3.17 DATE SAVE ANNUAL

3.18 WMBUS TYPE WB, AMR, AMR CUSTOM, O

3.19 LORAWAN On, O

3.20 DISPLAY TEST

3.12.1 PRIMARY ADDRESS

3.12.2 SECONDARY ADDRESS

3.12.3 BAUD RATE BPS

3.11.6 PULSE RATE Type of pulse

3.11.7 START VALUE Type of pulse

3.11.8 MEDIUM Type of pulse

Subject to change without prior notice

4.1 MEMORY DAY 1

4.2 MEMORY DAY 2

4.1.1 HEAT J, MJ, GJ, kWh, MWh

4.1.2 COOL J, MJ, GJ, kWh, MWh

4.1.3 IN 1 Type of pulse

4.1.4 IN 2 Type of pulse

4.2.1 HEAT J, MJ, GJ, kWh, MWh

4.2.2 COOL J, MJ, GJ, kWh, MWh

4.2.3 IN 1 Type of pulse

4.2.4 IN 2 Type of pulse

5.1 METER LIFE h

5.2 START COUNTING h

5.3 HEATING HOURS h

5.4 COOLING HOURS h

5.5 NO DELTA HOURS h

5.6 NO ERRORS HOURS h

6.xx* MONTHLY MEMORY 1

6.xx.1 HEAT J, MJ, GJ, kWh, MWh

6.xx.2 COOL J, MJ, GJ, kWh, MWh

6.xx.3 IN 1 Type of pulse

6.xx.4 IN 2 Type of pulse

6.xx.5 AVG. FLOW TEMP °C

6.xx.6 AVG. RET. TEMP °C

6.xx.7 AVG. CPU TEMP °C

6.xx.8 AVG. HEAT W

6.xx.9 AVG. FLOW m�/h

7.xx* ANNUAL MEMORY 1

7.xx.1 HEAT J, MJ, GJ, kWh, MWh

7.xx.2 COOL J, MJ, GJ, kWh, MWh

7.xx.3 IN 1 Type of pulse

7.xx.4 IN 2 Type of pulse

7.xx.5 AVG. FLOW TEMP °C

7.xx.6 AVG. RET. TEMP °C

7.xx.7 AVG. CPU TEMP °C

7.xx.8 AVG. HEAT W

7.xx.9 AVG. FLOW m�/h

8.1 ACTIVE ERRORS

8.xx* ERRORS CODE

9.xx* LOG MEM ERRORS

9.xx.1 ERROR DATA

9.xx.2 ERROR TIME

9.xx.3 ERROR COUNT

* xx equals an incremental index

NOTE: in absence of historical data, levels 6-7-9 will show - - (text).

9. Operating mode - M-Bus and pulse inputs activation

8. Operating mode – Radio activation

For wired M-Bus transmission or pulse inputs activation see the separated wired M-Bus or IR-MB-PULSE

documentation. Note: module compatible from Hydrocal-M4 serial number 05053000.

This section describes the radio communication management implemented. The WMBUS or LoRaWAN radio will

activate after the passage of ±5 litres. Pre-conﬁgured radio parameters (wM-Bus): AMR, 200s , everyday from 0 to

24h, encryption disabled, no historical data, standard package (standard data (heating energy, heating volume,

errors, battery value as a percentage). For more details see the speciﬁc wM-Bus or LoRaWAN documentation

obtainable by contacting the customer support.

RADIO INDICATOR ON DISPLAY

During the JOIN to the network procedure, if the LoRaWAN transmission has been activated, the radio symbol

will ﬂash quickly on the display (at a period of 1 second) until the device reaches the JOINED state and then

remains always active. In the case of a failed JOIN the radio symbol turns o. In the case of WMBUS mode only

after switching +/- 5 liters the icon will remain permanently active. In the case of wired M-BUS mode

only after switching +/- 5 liters the icon will remain permanently active. The radio icon will ﬂash

quickly during a transmission (LoRaWAN or wM-Bus) in cases where the device has reached the JOINED state or

when only wM-Bus mode is active.

During the wM-Bus and/or LoRaWAN test procedures, after starting the procedure via NFC app, the following

10 Subject to change without prior notice

Error Name Description

03 Qmax Overﬂow The device operates at a ﬂow rate greater than Q4 for 10 consecutive minutes.

06 Reverse installation Occurs during ﬁrst installation only, when the absolute count (forward counter -

reverse counter) is equal to 0 and a reverse ﬂow (>10 Liters) is detected.

08-09-10 Reserved Inform Customer Service

11 End of battery life The remaining battery life is less than 1 year. Permanent error, the icon is

shown on display.

12 Probe failure Failure, short circuit or tampering on supply or return probe(s).

13-14-15-16 Reserved Inform Customer Service

17 Wrong Real Time Clock Is recorded when a sudden reset of date and time is detected.

18 Supply Measurement out of range Measurement of the supply probe over the measuring range.

19 Return measurement out of range Measurement of the return probe over the measuring range.

21 Delta T non-compliant 24 continuous hours without ﬂow and Delta T (temperature dierence) > 10°C.

25 Display Overﬂow The energy digits, based on the selected unit, exceed the display’s capacity

26-27 Reserved Inform Customer Service

35 MBUS disconnected The M-Bus communication is not detected for 2 consecutive hours.

36 Wrong module The external module has been removed and a second module is mounted.

10. Errors and anomalies

When one or more anomalies occur, the thermal energy meter will report the recorded error and show the

following icon on the display . If the NFC or IR interface is used, the icon will blink for the duration of the

communication. The register of all the anomalies present is shown at level 8 of the consultation menu, where

the abbreviation Ern followed by two digits identiﬁes the anomaly.*

cases will be handled:

WMBUS_TEST_MSG: the icon will remain active for 1 minutes and will ﬂash quickly on the display (at a

period of 1 second) with each wM-Bus package sent. After that time the icon will turn o.

LORA_TEST_JOIN: the radio icon will start ﬂashing quickly on the display (at a period of 1 second).

If the join operation was successful, the icon will remain stable for 1 minute and then turn o otherwise it

will continue to ﬂash until all join attempts are concluded. In the case of a forced join procedure, after the

passage of ±5 liters, the icon will ﬂash throughout the 6 minutes cycle to various SFx and then remain on or o

depending on the outcome of the join request.

In the case of wired M-Bus mode only (after installing the module) the icon will remain permanently

active (if the M-Bus module is connected). If the module is installed and impulsive inputs are active, the icon

will activate permanently. If the module is momentarily disconnected, the icons and will start

ﬂashing on the display (1 second intervals) up to a maximum of 4 attempts (based on the default) or on the

ﬁrst successful reconnection. If the module is disconnected both icons described above will be deactivated. The

message ‘Mod ON’ will be shown on the display (for 10 seconds) when the communication procedure

between the meter and the module is concluded correctly.

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