Xylem SENSUS PolluTherm User guide

Heat / Cooling Meters Calculator Unit
PolluTherm can be combined with PolluFlow
Installation and Operating Instructions
MH 6114 INT PolluTherm, Page 1
PolluTherm
PolluFlow compatible
Installation and Operating Instruction

Heat / Cooling Meters Calculator Unit
PolluTherm can be combined with PolluFlow
Installation and Operating Instruction
MH 6114 INT PolluTherm, Page 2
The calculator unit PolluTherm is used for energy
consumption measurement in heating or cooling
systems, with water as the energy-carrying
medium. For applications with frost protection
additive in water, it is only possible to use
PolluTherm as uncalibrated non-MID conformed
device, and the correction factor for the K-factor in
this case can be programmed. This manual
describes the installation and operation of the
calculator unit PolluTherm. It contains important
information that shall be read by the end user of
this product
Contents
1. Technical Data..................................................2
3. Tools Required .................................................3
4. Combination of the Sub-assemblies.................3
5.1 Flow Sensor PolluFlow ...............................4
5.2 Installation of the Temperature Sensor.......5
5.3 Installation of the Calculator Unit ................5
6. Connection of the Sub-Assemblies ..................6
6.1 Connecting the Flow Sensor.......................6
Table 10: Connection diagram..........................7
6.2 Connecting the Temperature Sensor..........7
7. Display Options.................................................8
7.1 User Level (Example) .................................8
7.2 Due date Level (Example) ..........................9
7.3 Archive Level (Example) ...........................10
7.4. Service Level (Example) ..........................10
7.5 Control Level for Tariff Purposes (Example)
........................................................................11
7.6 Parameterization Level (Example)............11
8. Function Check, Sealing.................................12
9. Possible Error Situations ................................12
10. Data Interfaces and Options.........................13
10.1 Optical Interface......................................13
10.2 M-Bus Plug-In Module acc. to EN 13757-3
........................................................................13
10.3 Telecounting Plug-In Module ..................13
10.4 M-Bus Plug-In Module with Two Pulsed
Inputs ..............................................................13
10.5 USB Plug-In Module (for M-Bus slot)......14
10.6 LONWORKS®-FTT10A ...........................14
10.7 Inserting the Plug-In Modules into the
Calculator Unit.................................................14
10.8 Combined Heat / Cooling Meter (Order
Option) ............................................................14
10.9 Optional Integrated Data Logger (Order
Option) ............................................................14
10.10 Conversion of Battery Device to Power
Supply Device .................................................14
11. Note for Extending the Temperature Sensor
Cables.................................................................15

What is Included in the packaging:
Calculator unit PolluTherm (possibly with
temperature sensors and sleeves or ball
valve)
Sealing material (self-lock seals, locking
wire), cable-ties for strain relief
Attachment material (2 screws,
2 dowels, C-rails)
Installation and Operating Instruction
1. Technical Data
Calculator unit
Temperature measurement
range = 1 … 180 °C
Temperature differential
range ∆= 3 … 150 K
Switch-off limit 0.15 K
Measurement accuracy Better than (%):
± (0.5 + ∆min / ∆)
Updating time or
calculating cycles:
- Temperature
- Flow, output
- Energy, volume
2 sec
4 sec
4 sec (16 sec *)
* for battery operation
Optical data interface
Physical according to EN
61107
Data telegram according to
EN 13757-3
Suitable temperature
sensor
Pt 500
Connection in two or four-wire
system
Power supply
(there is the respective
calibration period)
Battery for 6 years
(optional: 11 years)
or power supply 230 V AC or
24 V AC
Electromagnetic
environmental condition Class E 1
Mechanical environmental
condition Class M 2
Protection class IP 54
Ambient temperature 5 … 55 °C
Storage temperature -20 … +65 °C
Relative air humidity < 93 %
Size (H x W x D)
regarding wall installation approx. 159 x 125 x 52 mm
Input
pulse value
in l
1 10
Display of the
calculator unit with
decimal points for m³,
MWh or GJ
00000.000 000000.00
Pulse value
for telecounting
of the heat quantity in
MWh or GJ
0.001 0.01
Pulse value
for telecounting
of the volume in l
1 10

Heat / Cooling Meters Calculator Unit
PolluTherm can be combined with PolluFlow
Installation and Operating Instructions
MH 6114 INT PolluTherm, Page 3
2. Safety Notes
Installation of the PolluTherm requires
specialist knowledge and should only be
carried out by a person trained for this.
The PolluTherm must be used within the
conditions outlined in Section1.
During installation of the PolluTherm, make
sure that the sleeve or ball valve is correctly
installed, otherwise there is a danger of
scalding due to escaping heating medium.
Therefore, during removal, first close the
shut-off valves.
The brass threads can have sharp edges due
to the production method. Therefore, we
recommend to use protective gloves.
Heat and cooling meters are measurement
devices and must be handled with care. In
order to protect from damage and
contamination, they should only be removed
from the packaging before installation.
If the housing and/or connecting cable shows
any signs of damage, the device must be
taken out of operation and secured to prevent
further operation.
For cleaning, only use a Water moistened
cloth.
Depending on the variants, there is a battery
installed in the device. This must not be
opened with force, come into contact with
water, short-circuited or exposed to
temperatures above 80 °C.
Discharged batteries, electronic devices or
components that are no longer required must
be disposed of as hazardous waste at
suitable collection points.
If multiple meters are used in a billing unit,
similar types of device shall be used in order
to obtain an accurate calculation of the
consumption.
For devices with main power supply:
The main power supplies (230 V AC or 24 V AC)
must have a 6 A-fuse on the installation side for
safety. The connection must only be carried
out by an authorized person trained for this.
Furthermore, observe the recognized rules for the
technology and in particular, VDE 0100.
Voltage: 220 ... 240 V AC
or 24 V AC
Frequency: 50/60 Hz
Max. power consumption: 0.5 VA
Cable length: approx. 1.1 m
3. Tools Required
Suitable open-end spanner or adjustable
spanner for the connecting bolts or flanged
bolts.
Philips screwdriver 0.5 x 3 for terminal
connection block
Allen key, size 3 for wall adapter
Side cutters for lockwire
Open-end spanner AF 24 (sleeves)
4. Combination of the Sub-assemblies
A complete measurement unit comprises of three
sub-assemblies:
These are available as a standard set which
includes:
Flow sensor
Calculator unit PolluTherm
A pair of temperature sensors
Flow sensor:
Size Output pulse
qp 0.6 to 6 1 litre/pulse
qp 10 to 60 10 litres/pulse
Calculator:
Input pulses 1 litre/pulse
10 litres/pulse
Temperature sensors:
Length 45 mm
100 mm
150 mm
During the installation it must be ensured that the
flow sensor and the calculator have the same
pulse value!

Heat / Cooling Meters Calculator Unit
PolluTherm can be combined with PolluFlow
Installation and Operating Instruction
MH 6114 INT PolluTherm, Page 4
5. Installation of the system parts
PolluTherm can also be utilized as a heat meter, a
cooling meter or combined heat / cooling meter.
(See Section 10.10). Therefore, the following
terminology is used in the following text:
Return for heating systems: Cooling line
Flow for heating systems: Warm line
Return for cooling systems: Warm line
Flow for cooling systems: Cooling line
Examples of installation for heating systems
Figure 1: Measurement after admixture
Figure 2: Measurement at injection circuit
Figure 3: Measurement with overflow valve
5.1 Flow Sensor PolluFlow
Applicable standards: EN 1434-6
For heating systems, the flow sensor PolluFlow is
installed as standard in the heating return or the
cooling pipe. For cooling systems, the calculator
unit PolluTherm X must be used (hereby, the X
indicates that the calculator unit has been
adjusted for flow sensors in the warm pipe) and
the flow sensor should be installed in the heating
flow or the warm pipe.
The direction of flow is indicated by an arrow
on the housing. The permitted operating
pressure and operating temperature must not be
exceeded.
The flow sensor can either be installed in the
warm or cooling pipe of the system. Make sure
that the flow sensor is installed in the appropriate
position for the medium temperature (refer to
PolluFlow Operating Instructions).
Calming sections for upstream and downstream of
the flow sensor are not required, however, it is
recommended to allow upstream of the meter with
3 - 10 DN to stabilize the flow.
There should be no sudden cross-sectional
reductions of the pipe in the downstream of the
flow sensor.
Installation of a strainer is also strongly
recommended at upstream of the flow sensor, or
at another suitable position in the heating or
cooling circuit. It is also recommended to install
shut-off valves in upstream and downstream of
the flow sensor (so that the pipeline does not have
to be drained during meter exchange). First, install
an adapter (instead of the flow sensor) and
thoroughly flush the pipeline system. Next, close
the shut-off valves, remove the adapter, clean the
sealing areas and install the flow sensor using

Heat / Cooling Meters Calculator Unit
PolluTherm can be combined with PolluFlow
Installation and Operating Instructions
MH 6114 INT PolluTherm, Page 5
new seals. With flanges, make sure that the
cross-section of the pipe is not reduced by the
positioning of the seals.
Installation in cooling systems:
It is recommended to install the flow sensor into
the warm pipe (return) of the cooling system.
PolluTherm X (installation into the warm pipe)
must be used in cooling systems. If Sensus flow
sensors are used, note to the approved
temperature range.
5.2 Installation of the Temperature Sensor
PolluTherm is operated using a pair of
temperature sensors, Type Pt 500. The type of
temperature sensors that can be used is given on
the front of the calculator unit.
In accordance with the guideline of the PTB
TR K 9, heat and cooling meters with nominal
flows of ≤Qp 6m³/h, only direct immersion is
permitted (refer to MID starter kit) (refer to
Figure 6) when installing the temperature
sensor into new installations of the pipeline
section in the area of the measurement
position with nominal pressures of ≤16 bar,.
Here, our MID starter kit should be used. This
consists of special ball valves with temperature
sensor seat M10 x 1, with integrated union nuts
and an adapter (refer to Datasheet MH 1131 DE).
These starter kits are compatible with the
temperature sensor types L = 45 mm / ø= 5.2
mm and DS 27.5. They are supplied up to
R1“(DN 25).
The EN 1434-2 can be used as a general
installation guideline.
When using Sensus temperature sensors with the
installation lengths of 100 mm and 150 mm, the
active measuring part is measured approx. 10 to
15 mm from the tip of the temperature sensor and
must be located as close as possible to the centre
in the pipeline. For these types, it is
recommended to install as follows:
Nominal diameters ≥DN 80*: Installation of the
temperature sensor at an angle of 45° against the
direction of flow (refer to Figure 4).
Nominal diameters ≥DN 65*: Installation of the
temperature sensor vertical to the direction of flow
(refer to Figure 5).
* For DN 65 and DN 80, both installation positions are
permitted, up to DN 50, installation is also possible in the pipe
elbow
For larger nominal diameters (from approx. DN
150) the sleeve must be immersed a minimum of
50 mm into the pipeline.
Figure 4: Exemplary illustration for
Nominal diameter DN 50
Figure 5: Exemplary illustration for
Nominal diameter DN 100
Figure 6: temperature sensor, direct
immersion
5.3 Installation of the Calculator Unit
Use the C-rail with two bolts to attach the
calculator in the horizontal position at the required
position. Place the housing on the C-rail and use
a flat-head screwdriver to raise the red snap-in
hook.
Next, press the housing onto the C-rail and
release the snap-in hook. Alternatively, the
calculator unit can also be directly installed onto
the flow sensor.
Messaktiver Teil
Tauchhülse
Tempera-
turfühler
ca. 10-15 mm
Messaktiver Teil
Tauchhülse
Temperaturfühler
ca. 10-15 mm

Heat / Cooling Meters Calculator Unit
PolluTherm can be combined with PolluFlow
Installation and Operating Instruction
MH 6114 INT PolluTherm, Page 6
To remove the red snap-in hook, use a flat-head
screwdriver to raise and remove the housing
(refer to Figure 7).
Figure 7: back side of the housing with
C-rails installed
6. Connection of the Sub-Assemblies
To open the housing, press on the two locking
lugs at both lower corners of the housing cover
and lift up the cover.
Figure 8: Terminal compartment open,
with one moulded rubber part removed
6.1 Connecting the Flow Sensor
Remove the appropriate moulded rubber part from
the housing (Figure 8) and cut a hole in the
moulded rubber part. Next, lead the cable through
the hole and establish strain relief using a cable-
tie (Figure 9).
The pulse line (white) is connected to the terminal
10 (+) and the line GND (blue) connected to the
terminal 11 (-). The terminal 9 is provided for the
voltage supply (brown). The yellow connection
cable should not be connected. This is only used
for test purposes. (Figure and Table 10).
If the flow sensor is an AN130/SAN130/FAN130,
the white wire is connected to terminal 10 (+) and
the brown wire to terminal 11 (-).
If the flow sensor is an HRI-Mei FS, the white wire
is connected to terminal 10 (+) and the grey wire
to terminal 11 (-).
The above mentioned cables must not be
connected other than stated, as the
electronics of the flow sensor could get
damaged!
Figure 9: Strain relief with cable-tie
Figure 10: connected Flow sensor PolluFlow
Further connection options for other
flow sensors, see table below
Connection PolluFlow
Function Clamp Colour
Do not
connect x yellow
3 V 9 brown
Imp (+) 10 white
Imp (-) 11 blue

Heat / Cooling Meters Calculator Unit
PolluTherm can be combined with PolluFlow
Installation and Operating Instructions
MH 6114 INT PolluTherm, Page 7
Connection AN130/SAN130/FAN130, other
flow sensors with reed contact
(e. g. WPD-FS 130)
Function Clamp Colour
Imp (+)10 white/other
Imp (-) 11 brown/other
Connection HRI-Mei FS
Function Clamp Colour
Imp (+)10 white
Imp (-) 11 grey
Table 10: Connection diagram
6.2 Connecting the Temperature Sensor
PolluTherm can be operated using temperature
sensor Type Pt 500. The type to use is given on
the front of the calculator unit housing. For
electro-magnetic sources of interference
(generators, frequency converters etc.) as well as
for cables that carry ≥230 V, we recommend a
minimum distance of 0.3 m. The connection can
be carried out either in two-wire or four-wire
system (for extension of the cable for the
temperature sensor up to max. of 23 m, cable
type: e.g. I-Y(St)Y 2x2x0.8, Minimum cross-
section: 0.5 mm², also refer to Section 12). The
following allocation applies:
Supply temperature sensor (warm pipe):
Type of connection Terminals
Two-wire system 5, 6
Four-wire system 5, 6 and 1, 2
Pos. available shielding
Return temperature sensor (cooling pipe):
Type of connection Terminals
Two-wire system 7, 8
Four-wire system 7, 8 and 3, 4
Pos. available shielding
To connect the cable for the temperature sensor,
initially remove the respective moulded rubber
part from the calculator housing (refer to
Figure 7), then lead the cable through the hole in
the moulded rubber part and establish strain relief
using a cable-tie (refer to Figure 11). Now connect
the wires to the appropriate terminals and replace
the moulded rubber part (refer to Figure 12 and
13).
Figure 12: Example of the connection of a
shielded cable in two-wire system
Figure 13: Wires connected, moulded rubber part
again used
For types of temperature sensors that are
supplied with the moulded rubber part attached to
the cable (refer to Figure 14), these can be
directly inserted into the calculator unit housing. In
this case, the attachment of a cable-tie is not
required.
Figure 14: Cable with moulded rubber part already
attached
Cable-tie for strain
relief

Heat / Cooling Meters Calculator Unit
PolluTherm can be combined with PolluFlow
Installation and Operating Instruction
MH 6114 INT PolluTherm, Page 8
When connecting in the four-wire system, the
procedure is similar (refer to Figure 15 and
Section 11).
Figure 15: Example of connecting an unshielded
cable in the four-wire system
7. Display Options
The different types of display options of the
PolluTherm are in six levels. The displays
indicated by (*) are hidden in the standard version
and can be displayed depending on the setting of
the meter. As required, the mask can be changed
through the optical data interface by using the
service software MiniCom Version 3.6.0.65. In
default setting, the display switches on for one
second at an interval of 4 seconds and indicates
the cumulated heating energy. By pressing the
red button, the first position displayed is activated
in the User Level (cumulated heating energy). The
other five levels can be accessed by pressing the
red button for 8 seconds. The selection menu
appears L1 to L6:
User level
Due Date level
Archive level
Service level
Control level for
tariff purposes
Parameterization level
By pressing the red button, the levels can be
selected in the above sequence. When the
required level is indicated, in order to attain this
level, press the red button for 2 seconds. The
individual display positions at the levels are called
up consecutively by a momentarily pressing the
button. If the button is not activated for approx. 4
minutes, the display automatically returns to
default. In all levels, volume pulses received are
indicated by a flashing impeller symbol (left, lower
corner of the display).
7.1 User Level (Example)
Error message
(only for a pending error)
Cumulated heating and
cooling energy
Consumption at the due
date with associated date
Cumulated volume
Segment test
Pulse value of the flow
sensor
Tariff consumption 1 *
(if activated)
Tariff consumption
cooling *
(if activated)
Consumption of the
external meter *
Consumption of the
second external meter *
Actual flow
Cable-tie for
strain relief

Heat / Cooling Meters Calculator Unit
PolluTherm can be combined with PolluFlow
Installation and Operating Instructions
MH 6114 INT PolluTherm, Page 9
Actual output
Temperature in the warm
pipe
Temperature in the
cooling pipe
Temperature difference
Customer-specific
number
Primary M-Bus address
(factory setting: 0) *
Secondary M-Bus
address
(Factory setting:
Serial number) *
7.2 Due date Level (Example)
All display positions are indicated by an arrow.
Display of all values are saved to an adjustable
due date in the year.
Due date value
for heating and cooling
energy
Due date value
for volumes
Due date value for Tariff
1
(if activated) *
Due date value for Tariff
cooling (if activated) *
Due date value for the
first external meter *
Due date value for the
second external meter *
Return to the selection
menu
(press for 2 seconds)

Heat / Cooling Meters Calculator Unit
PolluTherm can be combined with PolluFlow
Installation and Operating Instruction
MH 6114 INT PolluTherm, Page 10
7.3 Archive Level (Example)
All display positions are indicated by a calendar
symbol. Originating from the actual date, the
values are displayed for the past 16 months
(Date in six digits in the form dd.mm.yy below the
main display).
In addition, the values for the present month can
be accessed, in this case, the month must be
selected as "today".
Selection of the required
month by shortly pressing
the button, then press the
button for 2 seconds
Heating and cooling
energy
volume
Tariff consumption 1
(if activated) *
Tariff consumption cooling
(if activated) *
Consumption of the first
external meter *
Consumption of the
second external meter *
Maximum flow in the
selected month with date
(averaged)
Maximum flow in the
selected month with time
(averaged)
Maximum energy in the
selected month with date
(averaged)
Maximum energy in the
selected month with time
(averaged)
Failure hours
Hours with power supply
failure
(only relevant for power
supply) *
Return to the month
selection
(press for 2 seconds)
To exit the archive level, press the button twice
when a month change is displayed, or wait for 5
minutes.
7.4. Service Level (Example)
Each display position is indicated by a symbol of a
little man. The service level indicates the
maximum values and settings of the meter.
Absolute maximum flow
with date
(averaged)
Absolute maximum flow
with time
(averaged)
Absolute maximum
energy with date
(averaged)
Absolute maximum
energy with time
(averaged)
Absolute maximum
temperature in the warm
pipe with date
Absolute maximum
temperature in the cooling
pipe with date
Actual date
Actual time *

Heat / Cooling Meters Calculator Unit
PolluTherm can be combined with PolluFlow
Installation and Operating Instructions
MH 6114 INT PolluTherm, Page 11
Next due date
Operating days
Battery voltage
(calculated) *
Accumulated error hours
Hours with power supply
failure
(only relevant for power
supply) *
Primary M-Bus address
(factory setting: 0)
Secondary M-Bus
address (factory setting:
Serial number)
Data transmit mode
(length and structure of
theM-Bus protocol)
Version of the Firmware
Check sum
High resolution energy
display
High resolution
volume
Return to the selection
menu
(press for 2 seconds)
7.5 Control Level for Tariff Purposes
(Example)
Each display position is indicated by the word
CTRL“. Settings for the tariff functions can be
checked here.
Averaging interval set for
the flow and energy
energy in the actual
averaging interval
Flow in the actual
averaging interval
Setting tariff 1
(if activated) *
Switching point for inlet
flow temperature cooling
metering
(if activated) *
Switching point for outlet
temperature difference
cooling metering
(if activated) *
Correction factor for
water/frost protection
mixture (if activated)
(only in combination with a
mechanical flow sensor)
Return to the selection
menu
(press for 2 seconds)
7.6 Parameterization Level (Example)
Each display position is indicated by the tool
symbol.
This level is protected by a password. The
password is the last three digits of the eight digit
serial number on the meter housing. Initially, "000"
appears. Next, press the button for approx. 2
seconds and the left zero starts to flash. By
constantly pressing the button, the value at the
flashing position changes. As soon as the
required values are reached, release the button.
By shortly pressing the button, the value set is
confirmed and switches to the next position.
Proceed here as you did in the previous position.
After the last position is set, the level is activated.
Now, by shortly pressing the button, the required
positions can be selected; setting the values is
carried out by manually entering the password.

Heat / Cooling Meters Calculator Unit
PolluTherm can be combined with PolluFlow
Installation and Operating Instruction
MH 6114 INT PolluTherm, Page 12
By setting the "OnE COMPA", the standard values
are read out. The setting "OnE, OnE Plus or ALL"
activates the read out of additional information.
Password request
Setting
Primary M-Bus address
Setting
Secondary
M-Bus address
Setting
Customer-specific
number
Setting
Averaging interval for the
flow and energy
Setting data transmit
mode
(One, All, One Plus, One
Compa)
Pulse value of the first
external meter
(0.25 to 10.000 L/Imp.) *
Pulse value of the
second external meter
(0.25 to 10.000 L/Imp.) *
Set date
Set time *
Set due date
Reset absolute maximum
*
Reset
Failure hours *
Reset
Hours with mains failure *
Return to the selection
menu
(press for 2 seconds)
8. Function Check, Sealing
After opening the shut-off valves, check the
installation for signs of leakage. For checking
purposes, the actual values for the flow, energy,
as well as the flow and return temperature can be
called up on the display (see Section 7.1). In order
to protect the meter from manipulation, the self-
lock seal must be sealed at the following points:
Flow sensor screw connection
Installation point of the temperature sensors
Cover of the calculator unit (pull lockwire
through the eyelet at the bottom edge)
9. Possible Error Situations
PolluTherm is equipped with an automatic self-
monitoring function. In the event of a fault, a four
digit error code appears on the display in the form
"Err XYZ0". For decoding the error codes, the
following applies:
X: Monitoring the temperature sensors
Y: Monitoring the calculator unit
Z: Error statistics
Extract
Code Meaning
Err 1010
Temperature sensor interchanged or
return temperature is higher than the
flow temperature
Err 2010 or 3010 One or both temperature/s is/are
short-circuited
Err 4010 or 5010 Cable break, return temperature
sensor
Err 6010 or 7010
Supply temperature sensor short-
circuited and return temperature
sensor cable break
Err 8010 or 9010 Cable break, supply temperature
sensor
Err A010 or B010
Return temperature sensor short-
circuited and supply temperature
sensor cable break
Err C010 or D010 Cable break, flow and return
temperature sensor
The error situation "Err 1010" is caused
temporarily in the majority of cases when the
temperature in the warm line reduces by a
minimum of 3 K below the temperature in the
cooling line.
For all other error codes, contact our Technical
Service Centre.
Due to the back-up battery installed, the
PolluTherm with power supply can maintain the
measurement and metering operation even if

Heat / Cooling Meters Calculator Unit
PolluTherm can be combined with PolluFlow
Installation and Operating Instructions
MH 6114 INT PolluTherm, Page 13
there is an interruption in the voltage supply
(power failure) for a period of up to 90 days.
In such situations, communication (M-Bus,
MiniBus) with the meter will not be possible and
the following message will appear on the LC
display:
After 90 days, the measurement and metering
function is interrupted in the event of a power
failure, the back-up battery then ensures the
contents of the memory and the date and time
continues.
10. Data Interfaces and Options
PolluTherm has the following interfaces as
standard and can be equipped with the following
options, or be retrofitted:
10.1 Optical Interface
All meters are equipped with an optical data
interface as standard. Through an optical data
coupler (e.g. order number 184023 with USB
connection), settings can be changed using the
parameterization software MiniCom, or the meter
can be read out through the read-out system
SensusREAD. The data interface is activated for
one hour by momentarily pressing the button. By
interim communication of data, this period
restarts, so that e.g. over a longer time, read out
of the log can be carried out every 15 minutes or
hourly.
10.2 M-Bus Plug-In Module acc. to EN 13757-3
(Order number: 68504020)
Using this plug-in module, the meter can be read
out via its primary or secondary address, using an
M-Bus level converter (300 and 2400 baud,
automatic recognition). The setting of both
addresses can be carried out in the
parameterization level (refer to Section 7.6) or
using the service software MiniCom (Note: The
factory setting of the secondary address and
customer number is the same as the device
number on the meter housing). The primary
address can be set at between 0 and 250 and,
when delivered factory default, is set at 0.
Battery devices have an M-Bus credit, as such the
daily read out is limited, depending on the number
of meters in the M-Bus network. If the battery
powered device is retrofitted to a main power
supply device, the M-Bus credit is switched off
and communication is unlimited (refer to
Point. 10.12 Converting Battery Device to Power
Supply)
10.3 Telecounting Plug-In Module
Telecounting plug-in module FZS/N (Order
number: 68503920) for transmitting heat
consumption and volume pulses (only for power
supply operation)
Telecounting plug-in module FZS/B (Order
number: 68503922) for transmitting heat quantity
pulses (for battery operation)
Closing time: approx. 125 ms
Max. voltage: 28 V DC or AC
Max. current: 0.1 A
Free of bounce and potential
10.4 M-Bus Plug-In Module with Two Pulsed
Inputs
Order number: 68504686
In addition to the plug-in module described in
Section 10.3, two external consumer meters
(cooling water, warm water, electricity, gas, other)
with passive telecounting contact (reed switch or
open collector) can be connected.
Specification of the contact inputs:
Necessary losing time: > 62.5 ms
Input frequency: ≤3 Hz
Terminal voltage: 3 V
Factory default setting for both contact inputs:
- Input 1: Cooling water meter, pulse value 10
litres, meter start status 0.00 m³
- Input 2: Warm water meter, pulse value 10 litres,
meter start status: 0.00 m³
Activation of the inputs must be carried out
using the service software MiniCom 3, in the
menu item:
"Set parameter for the pulse input".
The meter serial numbers (meter ID) of the pulse
meter and, if necessary, the primary M-Bus
addresses must be entered. Set the tick for "Meter
1 (2) visible on the M-Bus". Meter start status and
pulse value can also be adapted. Pulse meters
are available as independent M-Bus meters on
the M-Bus. The consumption of the pulse meter is
then no longer transmitted in the M-Bus protocol
of the heat meter.

Heat / Cooling Meters Calculator Unit
PolluTherm can be combined with PolluFlow
Installation and Operating Instruction
MH 6114 INT PolluTherm, Page 14
10.5 USB Plug-In Module (for M-Bus slot)
Order number: 68504688
Using this plug-in module, the calculator unit can
be connected to a PC / Notebook or hand-held
computer with USB input. If an M-Bus plug-in
module is installed, this must be removed
beforehand. A driver is required for connection,
which is also supplied with a data carrier. The
description of the driver installation is given there.
10.6 LONWORKS®-FTT10A
Using this plug-in module, the meter can be
connected via a LONTALK®protocol to
appropriate instrumentation. A driver software is
supplied on a mini-CD. For more detailed
information, refer to Datasheet LH 6132 DE.
10.7 Inserting the Plug-In Modules into the
Calculator Unit
In each calculator unit has a slot for the M-Bus
modules (at the back, right) and the telecounting
modules (at the front, left). The approved
modules for the calculator unit must only be
installed into the slots provided for them.
Figure 16: Installation of the plug-in modules
During assembly, insert the plug-in modules into
the left and right guide made from white plastic
(Figure 16).
The contact pins must not be bent and easily glide
in the contact bushes provided for them.
Guide the connecting cable through the hole in
the moulded rubber part and establish strain relief
using a cable-tie. Now connect the wires to the
appropriate terminals and replace the moulded
rubber part.
10.8 Combined Heat / Cooling Meter (Order
Option)
Designation:
PolluTherm H or PolluTherm X H
With this option, the PolluTherm switches
between metering of the heating and cooling
energy with the aid of an automatic switching
point. The factory setting for switching to cooling
metering is:
Flow temperature ≤25 °C and
Negative temperature differential ≥- 0.15 K
To switch back to warm metering, the following
applies:
Flow temperature > 25 °C and
Positive temperature differential ≥0.15 K
As required, this switching point can be adapted
on site, using the service software MiniCom, from
Version 3.6.0.65.
10.9 Optional Integrated Data Logger (Order
Option)
If the option is installed, the housing cover has the
additional inscription "Data Logger".
The integrated data logger saves consumption
values at a time interval and actual values
(energy, flow, temperatures) that can be selected
(3 to 1440 minutes). The logger data can be read
out through the optical interface, M-Bus using the
service software MiniCom, from Version 3.6.0.65.
The time setting (factory setting: 60 minutes) can
also be changed using the MiniCom, from Version
3.6.0.65.
For connection to a PC, either an optical data
coupler (refer to Section 10.1.) or a USB plug-in
module can be used.
10.10 Conversion of Battery Device to Power
Supply Device
Before converting, observe the following and also
carry out in this sequence:
Before the supply battery is removed, the
calculator module must be removed from the
calculator unit. For this, open the cover of the
calculator unit and remove the right retaining
screw (screwdriver: Torx 6) under the plastic
cover (user seal, refer to Figure 17).
Subsequently, carefully pull the calculator
unit module upwards, out of the plug-in
connection. The left and middle seal must not
be removed (loss of calibration)!
Insert the backup battery AA 3,6V
(68504998) into the rear of the calculator unit
module. The battery is required to secure the
date and for temporary operation when the
mains power is interrupted.
Remove the main battery (D-cell) and insert
the mains module.
Telecounting
plug-in module
FZS/B with
batter
y
or FZS/N
M-Bus plug-in
module
(
back slot
)

Heat / Cooling Meters Calculator Unit
PolluTherm can be combined with PolluFlow
Installation and Operating Instructions
MH 6114 INT PolluTherm, Page 15
This is described in detail in the Installation and
Operating Instructions for the MH 6122, supplied
with the mains module.
Figure 17: Removing the retaining screw for the
module
11. Note for Extending the
Temperature Sensor Cables
The temperature sensors for PolluTherm are with
platinum resistor elements in the version Pt 500
(500 Ohm at 0 °C) as standard.
Two temperature sensors are required for each
calculator unit. Therefore, with regard to this, they
are delivered in pairs and calibrated. It is ensured
that a measured temperature differential in the
heating or cooling system is not falsified by
different characteristics of the temperature sensor
and cable resistance.
Due to the systems, it is frequently required to
extend one or both temperature sensors. The
cable for the temperature sensors can be
extended to a maximum of approx. 23 m.
In order to compensate for the additional cable
resistance, the so-called four-wire system is used.
Cable with four wires is used (e.g. I-
Y(St)Y 2x2x0.8, minimum cable cross-section:
0.5 mm²).
Option:
Extending only one cable
Extending both cables where both
extensions must not be the same length
Extension cable of the temperature sensor must
be carried out using the distribution socket offered
by Sensus. (refer to Figure 18, Order
number: 88599001, Installation Instructions MH
6105).
Figure 18: Distribution socket connection diagram
Due to the use of two additional wires per
temperature sensor at the terminal block in the
calculator unit, the electrical resistance and the
extension cable has no influence on the
measurement and indication of the temperatures
for higher temperature 1 and 2 and the lower
temperature 3 and 4,
Temperaturfühler
hohe Tem
p
eratur
Temperaturfühler
niedri
g
e Tem
p
eratur Im
p
uls
g
ebe
r
A
bschir-
mungen
A
bschir-
mungen
5 1 11102 6 7 3 4 8
Klemmenblock im Rechenwerk
Klemmbügel
5
126 73 4
Position of the
retaining screw

Heat / Cooling Meters Calculator Unit
PolluTherm can be combined with PolluFlow
Installation and Operating Instruction
MH 6114 INT PolluTherm, Page 16

Heat / Cooling Meters Calculator Unit
PolluTherm can be combined with PolluFlow
Installation and Operating Instructions
MH 6114 INT PolluTherm, Page 17

Heat / Cooling Meters Calculator Unit
PolluTherm can be combined with PolluFlow
Installation and Operating Instruction
MH 6114 INT PolluTherm, Page 18

Heat / Cooling Meters Calculator Unit
PolluTherm can be combined with PolluFlow
Installation and Operating Instructions
MH 6114 INT PolluTherm, Page 19

Heat / Cooling Meters Calculator Unit
PolluTherm can be combined with PolluFlow
Installation and Operating Instruction
MH 6114 INT PolluTherm, Page 20
Material number: 28505234
Version: 10.2021 • 0007
subject to modifications
Sensus GmbH Ludwigshafen
Industriestraße 16
D-67063 Ludwigshafen
Telephone: + 49 (0) 621 6904-1113
Fax: + 49 (0) 621 6904-1409
E-Mail: [email protected]