B meters Hydrocal-M3 User manual

Hydrocal M3 User Manual v1.8 ENG - 1
ENG
Hydrocal-M3
Heat meter, compact version
USER MANUAL
Premise
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.
Warning
The meter contains potentially dangerous batteries: handle carefully and do not dump in the
environment.

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INTRODUCTION
The model Hydrocal-M3 is a compact heat meter that measures the thermal energy used in the heating
and cooling systems.
The meter allows to measures the thermal energy passing into a hydraulic circuit used for heating and\or
for cooling, it let also the acquisition of the volume measured by up to 2 water meters equipped with
pulse emitter.
The meter is equipped with a pulse emitter output for the heating data transmission and with a Wired
M-Bus network port.
PACKAGE CONTENTS
Hydrocal-M3 heat meter
User manual
Adhesive seal
Declaration of conformity
GENERAL INFORMATION
Before proceeding with the installation and configuration of the product, read carefully the instructions
described in this manual. For further technical questions, please contact the Technical Support.
The installation must be carried out by qualified personnel only.
The relevant regulations regarding the instrument are the EN1434 (1-6) and Directive 2004/22/CE (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 mounting /
return pipe mounting). Always refer to the indications reported on the lid of the meter.

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INSTALLATION
HYDRAULIC PART
BEFORE MOUNTING
Before the 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.
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.
It is necessary to pay attention to the direction of the flow. Install the meter according to the water
flow following the direction indicated by the arrow embossed on the meter body. Install the meter
respecting the position designation (in accordance with the indication on the lid of the meter itself).
To ensure a correct measurement, make sure that there is no air inside of the pipe and make sure that
there are no debris in the fluid (potentially dangerous for the turbine of the meter).
MOUNTING
Always respect the type of installation prescribed (inlet pipe\outlet pipe). Always refer to the
information reported on the lid of the meter.
The picture below refers to a typical installation of a heat meter, standard version (return pipe
installation) and horizontal mounting.

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ALLOWED MOUNTING POSITIONS
All the versions of the heat meters can be installed both horizontally and vertically. If installed vertically,
make sure that the flow direction follows upward direction. 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.
Position allowed.
Ideal for a better
metering
performance.
Positions allowed.
“Upside down” mounting position is not allowed (see picture below).

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ELECTRONIC UNIT
Open the electronic unit by leveraging on the two hooks [1] and remove the cover [2].
For the specific connection instructions, refer to the appropriate sections included in this manual.
After the installation, connection, configuration and commissioning, close the cover and apply adhesives
sealing.

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TEMPERATURE SENSORS INSTALLATION
The heat meter is equipped with two PT1000 temperature sensors in accordance with the MID
2004/22/CE and EN1434 approvals.
For a proper installation, always proceed in accordance with the guidelines prescribed by law.
In the standard version (return pipe mounting position), the return sensor is already built into the brass
body. The inlet sensor instead, must be installed in a ball valve or in a socket mounted in the inlet pipe
and compliant with the requirements of the sensor itself.
Vice versa, the version for installation on the inlet pipe the temperature probe inserted on the brass
body correspond to the inlet pipe probe, and the return probe will required to be installed into a valve
or socket into the outlet pipe.
Before the installation of the temperature sensor, it is necessary to intercept the flow (close the ball
valve or the appropriate shutters).
INSTALLATION IN A SOCKET
For this kind of installation, first of all it is necessary to screw the socket in the pipe [1]. Then, insert the
temperature sensor [2] and tighten the screw [3].

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BALL VALVE INSTALLATION
For this kind of installation, first of all it is necessary to insert the temperature sensor in the threaded
nut [1] and insert the closing pin [2]. Unscrew the plug screw from the valve and place proper gaskets
[3] (included in the package) in order to guarantee a safe installation. Then, insert the temperature
sensor by screwing it on the threaded guide [4] and finally make sure that it is well tighten.
Warning:
-For a correct temperature measurement, the probe tip must be located in the center of the
pipe. In addition, the axis of the probe must be perpendicular to the pipe axis (see figure).
-The temperature sensors must be sealed after installation in the sockets.

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CONNECTIONS AVAILABLES
The meter gives the following possibilities of external connections:
-2 pulse inputs for connecting of two water meters with pulse emitters (the liter\pulse ratios
supported are 0.1 –0.25 –1- 2.5 –10 –25 –100 –250 –1000)
-1 pulse output for the sending of the thermal energy counting (heating only) for the connection
to a pulse acquisition system (the Kwh\pulse ratios selectable are 1 –10 –100 )
-1 port for connection to a digital protocol network MBUS (Meter bus), suitable for consumption
and operative data acquisition.
Tighten all the terminals carefully, making sure that the connections are completely secure.
Warning: Be careful when entering cables into the terminal in order to avoid potential malfunctioning
caused by the contact between the sheath and clamp.
TERMINAL BOARD DESCRIPTION
Numeri
Indicazione
Descrizione
24/25
MBUS
M-Bus network connection
16/17
ENERGY OUT
Heating pulse output
51/52
C1 IN
Volume meter input 1
54/55
C2 IN
Volume meter input 1

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M-BUS NETWORK CONNECTION
The inputs/outputs “M-Bus” (24 and 25) are dedicated to the meter connection with an M-Bus network
cable.
For the connection is not necessary to respect the polarity, although it is advisable to keep the same
polarity on the entire cable network.
Warning: the M-Bus network is using voltage that can damage the device when applied to terminals
dedicated to other functions, so be careful when connecting to this interface.
PULSE OUTPUT CONNECTIONS
The meter is equipped with an Open-Collector pulse output (30V):
- heating units output: ENERGY OUT (16, 17)
These outputs can be connected to a compatible totalizer or to a signal converter.

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VOLUME METERS C1/C2IN CONNECTION
The inputs C1 IN (51, 52, 53) and C2 IN (54, 55, 56) are dedicated to the flowmeters for hot and cold
sanitary water.
The heat meter is compatible with flowmeters with pulse output OC (open collector) or OA (reed), with
pulse value “liters/pulse” (strictly compliant to the value set on the meter).
Terminals 53 and 56 are reserved for eventual Anti-tampering wire connection.
Warning: when using flow meters with Open-Collector (OC) output, it is necessary to follow the correct
connection polarity.
FUNCTIONALITY
The heat meter HYDROCAL M3 is equipped with dedicated sections for the thermal energy measurement
of a heating/cooling (on request) system and for the volume measurement of the hot/cold sanitary water
system.
The meter is suitable for two-pipe domestic systems, in boiler room installations or any other compatible
application.
In residential systems, usually two pipes systems, the measurement of the thermal energy takes place on
a single section, both in heating and cooling cycle.
The picture below reports a typical connection diagram.

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DISPLAY AND BUTTONS
The heat meter is equipped in the front with a liquid crystal display and two buttons (T1 and T2), useful
for the configuration of the parameters and for the readings.
1) Eight-digit numeric field;
2) Single-digit numeric index (menu level);
3) Heating data index;
4) Cooling data index;
5) Circuits 1-2 for hot/cold sanitary water index;
6) Return flow temperature index;
7) Inlet flow temperature index;

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8) Battery level indicator;
9) Faults indicator;
10) Heating system flowmeter index;
11) Wired M-Bus data index;
11+12) Wireless M-Bus data index (predisposition);
13) Historical data index;
14) Pulse value index (k);
15) Measurement unit index;
T1) Level selection button;
T2) scroll button within the selected level;

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PROGRAMMING MENU
The programming menu is useful for the ordinary programming of the meter and for configured data
verification.
PROGRAMMING MENU ACCESS
To enter the programming menu, press the T1 button and select level 3. Then keep the T2 button pressed
for more than 3 seconds.
Once this is done, you will be prompted to enter a password for security reasons. Select the digit using
the T2 button and change the single numbers with the T1 button.
The password is communicated by the manufacturer to the installer only.
After entering the password, it is possible to start the parameters configuration.
The configuration screens are divided into 10 sub-levels. Here below there is a “step by step” guide for
the correct configuration of the heat meter:
1) The first parameter that has be configured is the pulse value "k" of the C1 cold/hot water meter.
The value can be selected by using the button T1: 0.1–0.25–1–2.5–10–25–100–250–1000 L/imp
Confirm the selected parameter by holding the T2 button for more than 3 seconds, thus moving to the
next parameter.
2) The second parameter that has be configured is the update of the consumption data reported on the
C1 hot/cold water meter dial. Select the digit using the T2 button and change the single numbers with
the T1 button.

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Confirm the selected parameter by holding the T2 button for more than 3 seconds, thus moving to the
next parameter.
3) The third parameter that has be configured is the pulse value "k" of the C2 cold/hot water meter.
The value can be selected by using the button T1: 0.1–0.25–1–2.5–10–25–100–250–1000 L/imp
Confirm the selected parameter by holding the T2 button for more than 3 seconds, thus moving to the
next parameter.
4) The fourth parameter that has be configured is the update of the consumption data reported on the
C2 hot/cold water meter dial. Select the digit using the T2 button and change the single numbers with
the T1 button.
Confirm the selected parameter by holding the T2 button for more than 3 seconds, thus moving to the
next parameter.
5) The fifth parameter that has be configured is the pulse value "k" of the OC pulse heating output (hot
out). The value can be selected by using the button T1: 0 - 1 - 10 –100 - 1000 kWh/imp
Confirm the selected parameter by holding the T2 button for more than 3 seconds, thus moving to the
next parameter.
6) The sixth parameter that has be configured is the secondary address of the Wired M-Bus (M-Bus) of
the heating data. Select the digit using the T2 button and change the single numbers with the T1 button.

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Confirm the selected parameter by holding the T2 button for more than 3 seconds, thus moving to the
next parameter.
7) The seventh parameter that has be configured is the primary address of the Wired M-Bus (M-Bus) of
the heating data. Select the digit using the T2 button and change the single numbers with the T1 button.
Confirm the selected parameter by holding the T2 button for more than 3 seconds, thus moving to the
next parameter.
8) The eighth parameter that has be configured is the secondary address of the Wired M-Bus (M-Bus) of
the cooling data. Select the digit using the T2 button and change the single numbers with the T1 button.
Confirm the selected parameter by holding the T2 button for more than 3 seconds, thus moving to the
next parameter.
9) The ninth parameter that has be configured is the primary address of the Wired M-Bus (M-Bus) of the
cooling data. Select the digit using the T2 button and change the single numbers with the T1 button.
Confirm the selected parameter by holding the T2 button for more than 3 seconds, thus moving to the
next parameter.
10)Finally to exit the menu and save the configured parameters, select the number [1] in the ESC panel
by using the button T1. On the contrary, select the number [0] to return to the first sublevel
Warning: before confirming the settings saving, make sure to properly set all parameters, in particular
the input pulse value of the flow sensor as it is no longer editable.

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CONSULTING MENU
The consulting menu is divided in six levels by a numeric index, always shown in the left-upper part of the
display.
By pressing the T1 button it is possible to choose the desired level, and by pressing the T2 button it is
possible to consult the sublevels of the preset level.
Here below, it is shown the navigation map of the consulting menu.
LEVEL 1: CUMULATIVE VALUES
1.1 Accounted energy (Heating) –cumulative
value
1.2 Display test –All segments on
1.3 Display test –All segments off
1.4 Accounted energy (cooling) –cumulative
value
1.5 Volume useful for the accounting
(heating) –cumulative value
1.6 Volume useful for the accounting (cooling)
–cumulative value
1.7 Total volume (first pulse input - C1) –
cumulative value (optional)
1.8 Total volume (second pulse input –C2) –
cumulative value (optional)

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LEVEL 2: ACTUAL ACCOUNTING VALUES
2.1 Actual power
2.2 Actual flow rate
2.3 Inlet flow temperature
2.4 Return flow temperature
2.5 Temperature difference

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LEVEL 3: SETTINGS (DISPLAYING ONLY)
3.1 Serial number
3.2 Firmware version
3.3 Communication Firmware version
3.4 Current Date
3.5 Liters/pulse value for input flow sensor
(set during production process)
3.6 Measurement unit (0= Mwh, 1= GJ)
3.8 Liters/pulse value for first input flow
meter (C1)
3.9 Starting value first input flow meter (C1)
3.11 Liters/pulse value for second input flow
meter (C2)
3.12 Starting value second input flow meter
(C2)
3.14 Liters/pulse value for heating pulse
output (Hot out)

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3.16 M-Bus Secondary address (Heating)
3.17 M-Bus Primary address (Heating)
3.18 M-Bus Secondary address (Cooling)
3.19 M-Bus Primary address (Cooling)
LEVEL 3: SETTINGS (CONFIGURATION)
The setting of the parameters can be enabled by pressing T2 for 3 seconds while viewing one of the
points of the level 3.
3s.1 Password request to enable parameters
setting
3s.4 Liters/pulse value setting for first input
flow meter (C1)
3s.5 Starting value setting for first input flow
meter (C1)
3s.7 Liters/pulse value setting for second input
flow meter (C2)
3s.8 Starting value setting for second input
flow meter (C2)

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3s.10 Liters/pulse value setting for heating
pulse output (Hot out)
3s.12 M-Bus Secondary address setting
(Heating)
3s.13 M-Bus Primary address setting (Heating)
3s.14 M-Bus Secondary address setting
(Cooling)
3s.15 M-Bus Primary address setting (Cooling)
3s.16 Saving parameters settings and exit
1 = save and exit, 0 = don’t exit