Zenner zelsius C5-IUF User manual

zelsius® C5-IUF
Installation and
operating manual
Electronic compact heat meter
with ultrasonic flow sensor IUF
optionally M-Bus, wM-Bus and 3 inputs/outputs
optional qp0,6/1,5/2,5 m3/h
EnergieMetering
All that counts.

Installation manual
General information
With zelsius C5 IUF, you have acquired one of the
most up-to-date, modern heat meters currently
available on the market. By this version, the wa-
ter volume is determined based on the transit time
method. The measurement accuracy is based on
the measurement requirements of EN 1434 class
2, optionally class 3. Expressive symbols in the
display and easy menu navigation make readout
simple. Can be operated with one single button. It
is equipped with a long-life battery made for opera-
tion during the initial verication validity period (5
years) including a reserve of at least another year.
The meter can be equipped optionally with a bat-
tery lifetime of 11 years.
MID - Initial verification
zelsius®C5-IUF is produced and tested in com-
pliance with the new European Measuring Instru-
ments Directive (MID). According to this directive,
devices are no longer carrying an initial verica-
tion stamp, but rather the year of the device’s dec-
laration of conformity (recognizable on the front of
the device, for example: M12). The MID controls
the use of heat meters up to the moment they are
placed on the market resp. their rst putting into
use. After this, the national regulations for devices
subject to compulsory verication apply within the
EU. The duration of initial verication validity in
Germany remains 5 years for heat meters.
After this period has expired the measuring de-
vice may no longer be used for billing in com-
mercial use. The regulations resp. validity period
may vary in other countries of the EU. ZENNER
International GmbH & Co. KG declares that this
product with the number of the EC type-exami-
nation certicate DE-12-MI004-PTB010 com-
plies with the requirements of the EC directives
2004/22/EC (Measuring instruments directive)
and 89/336/EEC (electro-magnetic compatibility)
Electro-magnetic interference
zelsius® C5-IUF fulls the national and interna-
tional requirements for interference resistance.
To avoid malfunctions due to other interferences,
do not install uorescent lamps, switch cabinets
or electric devices such as motors or pumps in
the immediate vicinity of the meter. Cables leaving
the meter should not be laid parallel to live cables
(230V) (minimum distance 0.2m)/
Care instructions
Clean plastic surfaces with a damp cloth only.
Do not use any scouring or aggressive cleaning
agents!
The device is maintenance-free during the service
life. Repairs can only be made by the manufac-
turer. The most up-to-date information about this
product nd of our installation notice can be found
at www.zenner.com.
2

3
Technical data flow sensor IUF
Nominal flow qp m³/h 0,6 1,5 2,5
Maximum flow qs m³/h 1,2 3 5
Minimum flow qi l / h 6 / 12 / 24 15 / 30 / 60 25 / 50 / 100
Pressure loss at qp bar <= 0,25 bar
Medium temperature range °C 0°C <= Ɵ q <= 90°C / 0°C <= Ɵ q <= 130°C
Minimum pressure (to avoid cavitation) bar 1 bar at qp and 80°C medium temperature range
Measurement accuracy class 3 / 2
Nominal pressure/peak pressure PS/PN Body with
threaded connection 16/16
PS/PN Body with flange/DN 16/16 / 25/25
IP-Protection class 68
Installation position in any position
Installation return flow optionally forward flow
Cable length up to calculator m 1,2
Installation place temperature sensorsd M10 x 1
Heat carrier (Medium) Water
Nominal diameter DN 15 15 20
Connecting threads* Nominal flow qp
(m³/h) L [mm]
Threaded
connection
Flange / ND
0,6 110 G3/4B --
0,6 130 G1B --
0,6 190 G1B 20
1,5 110 G3/4B --
1,5 130 G1B --
1,5 190 G1B 20
2,5 130 G1B --
2,5 190 G1B 20
* optionally

4
Technical data calculator
Temperature range °C 0...105 / 0...150 *
Temperature difference range K 3...80 / 3...130 *
Display LCD 8-stellig + Sonderzeichen
Ambient temperature during operation °C 5...55
Storage temperature °C -20...+65
Resolution temperature °C 0,01
Measurement frequency s adjustable ex works, beginning with 2s, standard 30s
Unit to read the heat consumption Standard MWh; optionally kWh, GJ
Data storage 1 x daily
Due date values Storage of all monthly values during the entire operation time
Maximum value storage extensive storage of flow rate, performance and other parameters
Interface Standard Optical interface (ZVEI, IrDA)
optional M-Bus, wM-Bus, RS485, radio
Supply 3,6 V lithium battery (different capacities)
Battery lifetime Years > 6, opt. > 11 (changeable during the operation time)
Protection class IP54
EMC A
Ambient conditions/climatic
influencing (valid for complete
compact meter)
- climatic
Highest permissible ambient temperature 55°C,
Lowest permissible ambient temperature 5°C,
Humidity class IP54
- mechanical class M1
- electro-magnetic class E1
Dimensioning limits may apply for non-symetrical temperature sensors installation.
* optionally
Technical data temperature sensors
Platinum precision resistor Pt 1000
Sensor diameter type mm 45 x 5,0 mm / 45 x 5,2 mm / DS 27,5 more on request
Temperature range °C 0 – 105/0…150
Cable length m1,5 (opt. 5)
Installation
VL by direct immersion or by immersion sleeves (in case of existing measuring points)
RL by direct immersion or by immersion sleeves (in case of existing measuring points)
Integrated in the flow sensor, optionally external

5
Pulse inputs and outputs (optional)
By meters with pulse outputs, the pulse value can be called up in the display (see the display overview,
Level 4). The pulse value of the outputs is permanently set and corresponds with the last position of the
associated display value.
Example:
Output 1 = energy output
Energy display = XXXXX.XXX
Last position = 0.001 MWh = 1 kWh
Output pulse = 1 kWh
A rmly attached cable is included: external wir-
ing must be done by oneself.
In 1…3 Out 1…3
Eingang
GNDGND
Ausgang
In 1…3 Out 1…3
Eingang
GN
DG
ND
Ausgang
M-Bus (optional)
The optional M-Bus interface complies with the
norm 1434-3 and operates with 2400 baud xed.
The two conductors can be connected in any or-
der to the M-Bus network.
Technical data I/O
Load max. max. 30V DC/20 mA
I/O 1, 2, 3
Open Drain, n-channel FET
Cable D = 3,8 mm, 4-core
Pulse-duty factor 1:1 (out); 1:5 (in)
Cable length 1,5 m
Input frequency max. 1 Hz
colour connection signification
white I/O 1 In-/Output 1
yellow I/O 2 In-/Output 2
green I/O 3 In-/Output 3
brown GND common ground for
I/O 1-3
colour connection signification
brown M-Bus 1 M-Bus-Line 1
white M-Bus 2 M-Bus-Line 2
Technical data M-Bus
Cable length 1,5 m
Cable D=3,8 mm, 2-core

6
Subject to modications and errors excepted. Any liability for misprints excluded. SAP144505_140225_EN
ZENNER International GmbH & Co. KG
Römerstadt 6
D-66121 Saarbrücken
Telephone [phone]
Telefax [phone]
E-Mail [e-mail]
Internet www.zenner.com
H1max = 30mm
L
H2= 25mm
6153
* see page 3
*

7
Installation instructions
General Information
Read these instructions carefully right up to the
end before starting to mount the device! The in-
stallation has to be done by qualied profession-
al personnel. The current laws and regulations
so as the generally accepted engineering prin-
ciples have to be observed during mounting and
tting, especially EN1434 part 1+6, (in Germany
also AGFW directive FW202, FW510, FW218
and DIN4713 part 4 and the initial verication di-
rective). At devices with M-Bus the general rules
of technology and the respective regulations for
electrical installations have to be followed.Make
sure no heating water escapes during installation
– this can cause burns!
The maximum heating water temperature at the
ow sensor may not exceed depending on ver-
sion 90°C respectively 130°C. For heating water
temperature over 90°C or using as a cooling me-
ter, the detachable calculator has to be mounted
separately with the supplied mounting adapter.
For heating systems with a lack of temperature
mixing resp. with temperature stratication a
straight pipeline of min. 10xDN has to be pro-
vided upstream of the installation point.
The ow measuring section is wear-free because
no moving parts. No inlet or outlet sections are
necessary. It is important to ensure adequate
system pressure to avoid cavitation. The review
of the approval can be identied denitely in the
display menu (Level 3).
ZENNER recommends to use direct temperature
measurement and not to use immersion sleeves.
Mounting flow sensor (VMT)
■Mount ball valves up- and downstream of the
VMT.
■Consider the correct installation point (supply
or return). Normally this ist the return pipe
(cooler pipe at heating systems). Please note
the type plate information.
■Consider the correct ow direction. This is
indicated by an arrow on the side of the VMT.
■The ow sensor can be installed in any posi-
tion (also „overhead“).
■Do not install at highest point of piping to
avoid air inside the ow sensor.
■Consider the dimensions of the heat meter.
Notes to installation of the ball valves
■Mount ball valves up- and downstream of the
meter.
■Mount a ball valve with bore M10x1 for direct
sensors in the supply. This is required for the
installation of the supply sensor.
■For symmetrical temperature sensor installa-
tion, mount an identical ball valve in the return.
This one is used for mounting the return sensor.

8
Mounting heating-/cooling energy meter
■Flush the system thoroughly before installing
the heating-/cooling energy meter.
■Close valves and release pressure.
■Dismount the existing ow sensor or meter
blank.
■Use only new and awless sealing material
and check the seal face for damage.
■Install the new ow sensor according to the
correct ow direction and installation position.
■Turn heat computer to desired reading posi-
tion.
Mounting temperatur sensors
■The installation of the temperature sensors
should be preferably symmetrical and direct
installation.
■Do not remove the return sensor if already
mounted on the VMU. This is also valid for
all the safety seals which are mounted on the
device as a standard.
■Sensors are colour-coded (red=supply,
blue=return).
■The connecting cables may not be buckled,
extended or shortened.
■The seal at the sensor installation point on the
measuring capsule may not be damaged.
■Remove locking screw and seal at the ball
valve completely, if existing.
■Attach the O-ring to the installation aid (the
2nd O-ring is only a spare O-ring). Using the
installation aid, insert the O-ring into the instal-
lation point according to DIN EN 1434 with a
slight circular motion.
■Using the other end of the installation aid
bring the O-ring into the correct position.
■Insert the 2 halves of the plastic connector
into the sensor’s three notches (crimps) and
press them together.
■Use the installation aid as positioning aid.
■Insert the temperature sensor into the installa-
tion point and screw it in tightly until the dead
stop of the seal on the 12-point is reached
(mounting torque 3-5 Nm).
■The temperature sensor installation point
which is optionnally integrated in the ow
sensor must be secured.
■Secure the sensor after installation against
unauthorised removal with appropriate sealing
(available as a sealing set)!
Installation DF-adapter

9
Putting into use
■Open valves carefully and chek installation for
leakage.
■If the sleep mode of the counter is enabled
(Display: SLEEP 1), then it must be deacti-
vated by longer pressing the button (>5s).
■While the system is operating, check whether
the volume display advances and the temper-
atures displayed correspond with the actual
temperatures (see the display overview).
■Wait for the temperature display to be updated
(1-2 sec).
■Secure meter with the enclosed sealing mate-
rial against unauthorised removal.
■Fill in the putting into use report in accordance
with PTB-Directive TR K9.
Mounting in existing immersion sleeves:
The device C5 can be put into use in connection
with existing immersion sleeves in accordance
with the article „Putting into use of MID homolo-
gated temperature sensors” released in the PTB
notications 119 (2009), vol. 6.
Based on current information, the regulation
has a period of validity until 30.10.2016. For the
identication and marking of the usable existing
immersion sleeves in connection with the C5
device, an identication and marking set can be
delivered from our company.
Consumer
Symmetrical sensor installation for zelsius
®
C5-IUF with the return sensor
integrated in the measuring capsule
Supply
Return
Consumer
Symmetrical sensor installation for zelsius
®
C5-IUF
Supply
Return
Consumer
Symmetrical sensor installation for zelsius
®
C5-IUF with the return sensor
integrated in the measuring capsule
Supply
Return
Consumer
Symmetrical sensor installation for zelsius
®
C5-IUF
Supply
Return

10
Status display / Error codes
The symbols in the table below show the meter’s operational status. The status messages only appear in
the main display (energy)! The temporary display of the warning triangle can be caused by special operat-
ing states and does not always mean that the device is malfunctioning. However, should the symbol be
displayed over a longer period of time, you should contact the service company.
Error codes show
faults detected by
zelsius®C5-IUF. If
more than one error
appears, the sum
of the error codes
is displayed: Error
1005 = error 1000
and error 5.
Symbol Status Event
External voltage -
Flow existent -
Attention! Check system/device for error
Symbol ashing: Data transmission
Symbol constantly displayed: optical interface active
-
-
Emergency operation. Exchange device
Code Error Event
1Temperature out of measuring range Check temperature
2Temperature out of measuring range Check temperature
3Short-circuit return sensor Check temperature
4Interruption return sensor Check temperature
5Short-circuit supply sensor Check temperature
6Interruption supply sensor Check temperature
7Battery voltage Exchange device
8Hardware error Exchange device
9Hardware error Exchange device
10 Error in the measuring system Exchange device
20 No water in the measuring tube Check operating pressure
30 Reverse water flow detected Check installation position
40 Air inside the medium Vent system
50 Measured value outside overload range Check dimensioning
100 Hardware error Exchange device
800 Wireless interface Exchange device
1000 Status end of the battery Exchange device resp. battery
2000 Status initial verification expired Exchange device

Important Note:
The optical interface has to be activated by
means of the OptoHead through keypress before
reading out of the de vice.
Devices, which are in sleep mode (Display:
SLEEP 1) have to be activated through keypress
until the energy display shows up.
Depending on you meter’s model its displays
can differ in number and order from those shown
here.
Level 1 Level 2
Heat energy
(Main display)
Ebene 1 Ebene 2 Ebene 3 Ebene 4
Volume
Supply temperature
Return temperature
Temperature difference
Flow rate
Current output
Certification model
3
Pulse value
Input 1
4
Pulse value
Input 2
4
Pulse value
Input 3
4
Sensor type and
installation point VMT
3
Model number
Serial number
End of the battery
Error status
3
System Date
3
System Time
3
Operation hours
3
Primary M-Bus address
3
Firmware version
3
Function
Output 3
3
Function
Output 2
3
Function
Output 1
3
Date month maximal
flow
2
2
Maximum power, Average value
since commissioning
Maximum heat energy
power month
2
2
Maximum cooling energy
power month
Maximum cooling energy power,
average value since commissioning
2
Heat energy difference from
last due date to now
2
Cooling energy difference
from last due date to now
Heat energy difference from
1. this month to now
2
Maximal Flow
2
2
Cooling energy difference from
1. this month to now
2
Volume difference from
1. this month to now
Due date cooling energy
1
Cooling energy
1
3
Opto readout energy
2
S
S
S
S
HHH
H
Ebenenwechsel können
jedem beliebigen Menü-
punkt heraus erfolgen.
Hinweis
Je nach Ausführung Ihres Zählers können Anzeigen in Anzahl und
Reihenfolge von den Abbildungen mehr oder weniger abweichen.
Legende
Taste kurz drücken (S), zum
Blättern von oben nach un-
ten. Nach unterstem Menü-
punkt erfolgt ein automati-
scher Sprung zum obersten
Menüpunkt (Schleife).
Taste etwa 2 sec. drücken
(L), warten bis Türsymbol
(oben rechts in der Anzeige)
erscheint, dann Taste loslas-
sen. Erst dann wird Menü
aktualisiert bzw. erfolgt der
Sprung zum Untermenü.
Taste halten (H) bis Ebenen-
wechsel oder Rücksprung
aus Untermenüs erfolgt.
H
L
S
1
3
1
3
1
3
3
3
Segment test
1
2
3
4
1
Energy
Last due date
1
Date last due date
Heat energy
(Main display)
Ebene 1 Ebene 2 Ebene 3 Ebene 4
Volume
Supply temperature
Return temperature
Temperature difference
Flow rate
Current output
Certification model
3
Pulse value
Input 1
4
Pulse value
Input 2
4
Pulse value
Input 3
4
Sensor type and
installation point VMT
3
Model number
Serial number
End of the battery
Error status
3
System Date
3
System Time
3
Operation hours
3
Primary M-Bus address
3
Firmware version
3
Function
Output 3
3
Function
Output 2
3
Function
Output 1
3
Date month maximal
flow
2
2
Maximum power, Average value
since commissioning
Maximum heat energy
power month
2
2
Maximum cooling energy
power month
Maximum cooling energy power,
average value since commissioning
2
Heat energy difference from
last due date to now
2
Cooling energy difference
from last due date to now
Heat energy difference from
1. this month to now
2
Maximal Flow
2
2
Cooling energy difference from
1. this month to now
2
Volume difference from
1. this month to now
Due date cooling energy
1
Cooling energy
1
3
Opto readout energy
2
S
S
S
S
HH
H
H
Ebenenwechsel können
jedem beliebigen Menü-
punkt heraus erfolgen.
Hinweis
Je nach Ausführung Ihres Zählers können Anzeigen in Anzahl und
Reihenfolge von den Abbildungen mehr oder weniger abweichen.
Legende
Taste kurz drücken (S), zum
Blättern von oben nach un-
ten. Nach unterstem Menü-
punkt erfolgt ein automati-
scher Sprung zum obersten
Menüpunkt (Schleife).
Taste etwa 2 sec. drücken
(L), warten bis Türsymbol
(oben rechts in der Anzeige)
erscheint, dann Taste loslas-
sen. Erst dann wird Menü
aktualisiert bzw. erfolgt der
Sprung zum Untermenü.
Taste halten (H) bis Ebenen-
wechsel oder Rücksprung
aus Untermenüs erfolgt.
H
L
S
1
3
1
3
1
3
3
3
Segment test
1
2
3
4
1
Energy
Last due date
1
Date last due date
11

12
Legend
Press the button briey (S) to
switch through the display from
top to bottom. When you have
reached the last menu item the
device automatically jumps back
to the menu item at the top (loop).
Press the button for about 2 sec-
onds (L), wait for the door symbol
to appear (upper right comer of
the display) and then release the
button. The menu is then updated
resp. Switches to the sub-menu.
Hold down the button (H) until the
device switches to another level
or switches back from the sub-
menu.
A detailed display overview in-
cluding submenus is available
upon request.
H
L
S
Level 3
Heat energy
(Main display)
Ebene 1 Ebene 2 Ebene 3 Ebene 4
Volume
Supply temperature
Return temperature
Temperature difference
Flow rate
Current output
Certification model
3
Pulse value
Input 1
4
Pulse value
Input 2
4
Pulse value
Input 3
4
Sensor type and
installation point VMT
3
Model number
Serial number
End of the battery
Error status
3
System Date
3
System Time
3
Operation hours
3
Primary M-Bus address
3
Firmware version
3
Function
Output 3
3
Function
Output 2
3
Function
Output 1
3
Date month maximal
flow
2
2
Maximum power, Average value
since commissioning
Maximum heat energy
power month
2
2
Maximum cooling energy
power month
Maximum cooling energy power,
average value since commissioning
2
Heat energy difference from
last due date to now
2
Cooling energy difference
from last due date to now
Heat energy difference from
1. this month to now
2
Maximal Flow
2
2
Cooling energy difference from
1. this month to now
2
Volume difference from
1. this month to now
Due date cooling energy
1
Cooling energy
1
3
Opto readout energy
2
S
S
S
S
H
H
HH
Ebenenwechsel können
jedem beliebigen Menü-
punkt heraus erfolgen.
Hinweis
Je nach Ausführung Ihres Zählers können Anzeigen in Anzahl und
Reihenfolge von den Abbildungen mehr oder weniger abweichen.
Legende
Taste kurz drücken (S), zum
Blättern von oben nach un-
ten. Nach unterstem Menü-
punkt erfolgt ein automati-
scher Sprung zum obersten
Menüpunkt (Schleife).
Taste etwa 2 sec. drücken
(L), warten bis Türsymbol
(oben rechts in der Anzeige)
erscheint, dann Taste loslas-
sen. Erst dann wird Menü
aktualisiert bzw. erfolgt der
Sprung zum Untermenü.
Taste halten (H) bis Ebenen-
wechsel oder Rücksprung
aus Untermenüs erfolgt.
H
L
S
1
3
1
3
1
3
3
3
Segment test
1
2
3
4
1
Energy
Last due date
1
Date last due date
Heat energy
(Main display)
Ebene 1 Ebene 2 Ebene 3 Ebene 4
Volume
Supply temperature
Return temperature
Temperature difference
Flow rate
Current output
Certification model
3
Pulse value
Input 1
4
Pulse value
Input 2
4
Pulse value
Input 3
4
Sensor type and
installation point VMT
3
Model number
Serial number
End of the battery
Error status
3
System Date
3
System Time
3
Operation hours
3
Primary M-Bus address
3
Firmware version
3
Function
Output 3
3
Function
Output 2
3
Function
Output 1
3
Date month maximal
flow
2
2
Maximum power, Average value
since commissioning
Maximum heat energy
power month
2
2
Maximum cooling energy
power month
Maximum cooling energy power,
average value since commissioning
2
Heat energy difference from
last due date to now
2
Cooling energy difference
from last due date to now
Heat energy difference from
1. this month to now
2
Maximal Flow
2
2
Cooling energy difference from
1. this month to now
2
Volume difference from
1. this month to now
Due date cooling energy
1
Cooling energy
1
3
Opto readout energy
2
S
S
S
S
H
HHH
Ebenenwechsel können
jedem beliebigen Menü-
punkt heraus erfolgen.
Hinweis
Je nach Ausführung Ihres Zählers können Anzeigen in Anzahl und
Reihenfolge von den Abbildungen mehr oder weniger abweichen.
Legende
Taste kurz drücken (S), zum
Blättern von oben nach un-
ten. Nach unterstem Menü-
punkt erfolgt ein automati-
scher Sprung zum obersten
Menüpunkt (Schleife).
Taste etwa 2 sec. drücken
(L), warten bis Türsymbol
(oben rechts in der Anzeige)
erscheint, dann Taste loslas-
sen. Erst dann wird Menü
aktualisiert bzw. erfolgt der
Sprung zum Untermenü.
Taste halten (H) bis Ebenen-
wechsel oder Rücksprung
aus Untermenüs erfolgt.
H
L
S
1
3
1
3
1
3
3
3
Segment test
1
2
3
4
1
Energy
Last due date
1
Date last due date
Level 4