B meters HYDROCAL-M4 Montageanleitung

1Subject to change without prior notice

HYDROCAL-M4 •Operating and Installation Instruction

v1.131.08.2022

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, Wireless M-BUS and

LoraWan network 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 (1-6) and Directive 2014/32/EC (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

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 potentially dangerous batteries, handle them with caution and do not disperse the

components 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.

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

2Subject to change without prior notice

2. Safety Information

Attention: this symbol highlights the instructions to be followed scrupulously for the correct

functioning of the combined heat and cooling meter.

Danger: the chapters marked with this symbol contain information that must be followed carefully

to avoid dangerous situations. Thermal energy meters are precision devices and must be protected

from shock and vibration.

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.

Notes: the notes indicated by this symbol contain tips to keep in mind when using the thermal

energy meter.

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 for-

feiture 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 environmen-

tal regulations.

Store out of the reach of children.

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 Coun-

cil 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 billed as possible.

3Subject to change without prior notice

Pay attention to the angular or sharp protrusions in the threads, flanges and measuring tube.

Therefore, it is recommended to wear protective gloves.

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 turns off. 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. The quality of the water has to be as speciﬁed by the CEN/TR 16911 regulation.

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; howe-

ver, electromagnetic interference must be avoided.

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

building, use increased protection against electrical interference.

4Subject to change without prior notice

Rinse the pipes thoroughly before installing the meter.

The device must be installed pay attention to matching the direction of the arrow on the meter

brass body to 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 opposi-

te 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 newly 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

disclaim all liability for consequential damage resulting from the use of third-party gaskets, such

as corrosion of sealing surfaces and threads.

Problem Cause Solution

Display off, pressing buttons does

not respond The battery may be damaged or discharged Inform Customer Service

Damaged brass case or leakage Possible external impact or fall to the ground Inform Customer Service

Lower case brass separated

by electronic unit

Tampering by third party or strong external

impacts Inform Customer Service

Open and visible electronic unit Tampering by third party or strong external

impacts Inform Customer Service

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

or damage to the flow detection sensor Inform Customer Service

Error 12 always present Damaged temperature probes Inform Customer Service

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

temperatures limits Inform Customer Service

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

may be damaged or discharged Inform Customer Service

TROUBLESHOOTING

5Subject to change without prior notice

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.

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).

INSTALLATION

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.

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 for a

better performance

Additional allowed positions

* This position is not suggested for cooling meters and in cases where moisture can enter the electronic

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

6Subject to change without prior notice

TEMPERATURE SENSOR INSTALLATION

INSTALLATION IN A SOCKET BALL VALVE INSTALLATION

The thermal energy meter is equipped with two digital probes that comply with the MID 2014/32/EC

directive and the EN1434 standard.

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.

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

regulations.

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.

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.

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).

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

7Subject to change without prior notice

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.

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;

11) Flow presence indicator;

12) M-Bus wired communication data index;

10) Faults or NFC/IR active communication indicator;

The picture below reports a typical connection diagram (installation on return pipe):

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;

12+13) Wireless M-Bus data index;

8Subject to change without prior notice

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.

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.

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

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

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.

INITIALIZATION (Installation version and measuring unit already conﬁgured)

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

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.

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

x=1

x=2

9Subject to change without prior notice

7. Consultation menu

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

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 off. If no

button is pressed within 20 seconds (with the display off) the display cycle will start again from level 1.

If a button is pressed within 20 seconds (with the display off) 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 INDEX INF UM

1.01 HEAT J,MJ,GJ,kWh,MWh

1.02 COOL J,MJ,GJ,kWh,MWh

1.03 HEAT m³

1.04 COOL m³

1.05 ABSOLUTE m³

1.06 FORWARD m³

1.07 REVERSE m³

1.08 IN 1 m³

1.09 IN 2 m³

1.10 LOST m³

2 INDEX INF UM

2.01 POWER H kW

2.02 POWER S W

2.03 HEAT J, Wh

2.04 FLOW m³/h

2.05 TEMP. SUPPLY °C

2.06 TEMP. RETURN °C

2.07 TEMP.DIFFERENCE °C

2.08 TEMP. AMBIENT. °C

10Subject to change without prior notice

3 INDEX INF UM

3.01 SERIAL NUMBER

3.02 CRC FW

3.03 MAIN FW

3.04 RADIO FW

3.05 DISPLAY FW

3.06 INSTALL TYPE RETURN, SUPPLY

3.07 DATE

3.08 TIME

3.09 UNIT 1,2,3,4,5

3.10 IN 1 ON, OFF

3.10.1 PULSE RATE Type of pulse

3.10.2 START VALUE Type of pulse

3.10.3 MEDIUM Type of pulse

3.11 IN 2 ON, OFF

3.11.1 PULSE RATE Type of pulse

3.11.2 START VALUE Type of pulse

3.11.3 MEDIUM Type of pulse

3.12 MBUS ON, OFF

3.12.1 PRIMARY ADDRESS

3.12.2 SECONDARY

ADDRESS

3.12.3 BAUD RATE BPS

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, OFF

3.19 LORAWAN ON, OFF

3.20 DISPLAY TEST

4 INDEX INF UM

4.01 MEMORY DAY 1

4.01.1 HEAT J,MJ,GJ,kWh,MWh

4.01.2 COOL J,MJ,GJ,kWh,MWh

4.01.3 IN 1 Type of pulse

4.01.4 IN 2 Type of pulse

4.02 MEMORY DAY 2

4.02.1 HEAT J,MJ,GJ,kWh,MWh

4.02.2 COOL J,MJ,GJ,kWh,MWh

4.02.3 IN 1 Type of pulse

4.02.4 IN 2 Type of pulse

6 INDEX INF UM

6.xx* MONTLY

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 m³/h

5 INDEX INF UM

5.01 METER LIFE h

5.02 START COUNTING h

5.03 HEATING HOURS h

5.04 COOLING HOURS h

5.05 NO DELTA HOURS h

5.06 NO ERRORS HOURS h

7 INDEX INF UM

7.xx* ANNUAL

MEMORY

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 m³/h

8 INDEX INF UM

8.01 Active errors

8.xx* Errors code

9 INDEX INF UM

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).

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