Apator Metra E-ITN 40 User manual
E-ITN 40
Manual for installation service and operation M2021/8a EN
CONTENTS
1. INTRODUCTION.......................................................................................................................3
1.1. LC display.............................................................................................................................................. 3
2. DEVICE DESCRIPTION...............................................................................................................3
3. TECHNICAL SPECIFICATIONS......................................................................................................5
3.1. Construction........................................................................................................................................... 9
4. OPERATION MODES OF ALLOCATOR...........................................................................................11
4.1. Operation modes..................................................................................................................................11
4.2. Submenu navigation.............................................................................................................................11
4.3. Working mode...................................................................................................................................... 11
4.3.1. Menu structure in working mode....................................................................................................11
4.3.2. Last year of battery life.................................................................................................................. 12
4.4. Error mode........................................................................................................................................... 12
5. OTHER INFORMATION ABOUT PRODUCT.......................................................................................13
5.1. Electronic seal reactivation...................................................................................................................13
5.2. Transportation...................................................................................................................................... 13
5.3. Storage................................................................................................................................................. 13
5.4. Application and disposal....................................................................................................................... 13
5.5. Defects and their elimination................................................................................................................13
5.6. Warranty............................................................................................................................................... 13
6. ACCOMPANYING DOCUMENTATION..............................................................................................14
6.1. Packing................................................................................................................................................ 14
7. MOUNTING METHODS.............................................................................................................17
7.1. Allocator installation..............................................................................................................................17
7.2. Allocator back plate..............................................................................................................................17
7.3. E ITN 40 mounting place on segmented and panel radiators..............................................................18
7.3.1. Vertical position:............................................................................................................................ 1
7.3.2. Horizontal position:........................................................................................................................ 1
7.4. Installation on segmented radiators......................................................................................................20
7.4.1. Description of installation...............................................................................................................20
7.4.2. Installation differences................................................................................................................... 20
7.5. Installation on panel radiators..............................................................................................................21
7.5.1. Description of installation...............................................................................................................21
7.6. Installation on horizontal and vertical registers.....................................................................................22
7.6.1. Installation description................................................................................................................... 22
7.6.2. Proper E-ITN 40 installation on different register types.................................................................22
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E-ITN 40
Manual for installation service and operation M2021/8a EN
1. INTRODUCTION
E ITN 40 is modern electronic device intended for ratio based allocation of heat cost in buildings with central
heating system. The heat cost allocator E ITN 40 uses the two sensor measuring principle – integrates
temperature difference between sensor of radiator surface temperature and sensor of surrounding
temperature. Using this principle, allocator ensures measurement of consumption value only when the
radiator really emits heat. Compared to one sensor allocator it minimizes the risk of summer consumption.
E ITN 40 is intended to be installed in one tube horizontal/vertical and two tube heating systems with the
lowest mean design heating medium temperature ≥ 35 °C and highest mean design heating medium
temperature ≤ 105 °C.
Each radiator in billing (account) unit with common invoicing heat meter must be equipped with a heat cost
allocator of the same type. Technical conditions of heating system must be fulfilled when using heat cost
allocators E ITN 40.
E ITN 40 is not intended for heat cost allocation for floor heating systems, ceiling radiant heating, flap
controlled radiators, radiators with fan, systems with steam heating medium, air heaters and single tube
radiators if exceeds the scope of one user. It must not be also used for heating elements that shape and
design does not allow reliable transfer of heat to heat cost allocators.
1.1. LC DISPLAY
Basic allocator status and measured values can be displayed on LCD. LCD can display five alphanumeric
characters. These values are highlighted by underline and over line, e.g. oPEn.
Meaning of some values may be different if the additional symbol „SM“ at the right bottom corner is
displayed. These values are mentioned with „SM“ symbol in text , e.g. 385 SM.
The last symbol on the display indicate end of the battery life, see chapter 4.3.2.
To save the battery, after longer period of inactivity (approx. 30 sec.), energy saving mode is activated and
display is switched off. Display can be activated by pushing the button. (Illustration 1:LC Display).
When pushing the button briefly, notice on the display will appear. If the button is not pushed in 30
seconds, the display will switch off.
The data displayed on the LCD display may vary depending on the type of the allocator and also on the
active operating mode. For more information, see below.
2. DEVICE DESCRIPTION
Installation of allocator consists only from mounting of base plate from aluminium alloy and placing of
allocator to this base plate. Due to integrated radio transmitter, presence of flat occupant is not required
when data are read. No strangers also enter the flat. Data reading can be made by billing company
employee using mobile receiving unit RFU 40 outside the house.
Measured data are transmitted in a short ~ 5 22 ms radio telegrams and secured by encryption. Data are
transmitted based on customer's settings.
Possible modes of transmission are:
•Beacon (It is transmitted serial number of allocator, seals states, date of connecting of external
sensor. Consumption is not transmitted.)
•Metra
•W MBus
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Illustration 1:LC Display
E-ITN 40
Manual for installation service and operation M2021/8a EN
•W MBus encrypted
•W MBus OMS
•W MBus OMS encrypted
Allocator is equipped with mechanic and electronic seal and is delivered in sealed state with activated
electronic seal. In the case of unauthorized removing of base plate, the allocator saves the date of breach of
the electronic seal to its memory and stop to show measured data on the display. After each press of button
it is displayed oPEn and after that a menu item. Allocator continues in measuring and transmitting of
measured data.
Notice oPEn will disappear when electronic seal is activated again with NFC.
The device is resistant against cheating. If any cheating is detected, allocator switches to the mode
inconvenient for the user – after cheating is finished, the allocator switches to standard mode.
Allocator can work in mode of individual or unified scale. For correct evaluation it is necessary to use
individual scale:
•power of radiator
•coefficient (KC) taking into consideration heat transfer from radiator to temperature sensor
For unified scale:
•Power of radiator and coefficient is always the same.
Parameters can be set beforehand in production or before installation using radio or NFC.
All parameters you can set using application Radio Admin:
Measuring
•Count in summer
•Power of radiator
•Coefficient Kc
•Start of heating season
•Start of summer season
•Start of billing period
Menu (LCD)
•Radiator power
•Coefficinet Kc
•Current temperature of radiator sensor
•Current temperature of environment
•Maximum temperature of radiator sensor for past yearly billing period
•Maximum temperature of radiator sensor for past monthly billing period
•Average temperature of radiator sensor for past yearly billing period
•Average temperature of radiator sensor for past monthly billing period
•Date
•Time
•Total consumption
Reading and setting of allocator is done using application Radio Admin for smartphones with system Android.
Application can be downloaded in Google Play Store.
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3. TECHNICAL SPECIFICATIONS
Application tmin ≥ 35 °C (min. temperature of the heating medium)
tmax ≤ 105 °C (max. temperature of the heating medium)
Measuring principle two sensor measuring principle
Conditions for registration temperature of the sensor of the radiator temperature ≥ 23 °C
difference of mean temperature of heating medium and surroundings
temperature ≥ 4 °C
Billing period yearly or monthly (customer defined)
Total evaluation factor unit scale, K = 1
Calendar functions Consumption
total consumption (from beginning of operation or reset)
consumption for billing period (current yearly + 6 previous)
consumption for previous monthly billing period (current + 24
previous)
date of beginning of measuring total consumption (DD:MM:YY).
date of beginning of billing period (DD:MM)
date of beginning of heating season (DD:MM)
date of beginning of summer season (DD:MM)
Temperature of radiator
max. temperature of sensor of radiator for past billing period
(current yearly + past yearly)
max. temperature for sensor of radiator for past monthly billing
period (current monthly + 12 previous)
min. temperature of sensor of radiator for past yearly billing period
(current yearly + past yearly)
min. temperature of sensor of radiator for monthly billing period
(current monthly + 12 previous)
average temperature of sensor of radiator for past monthly billing
period (current monthly + 12 previous)
date of record of highest temperature of sensor of radiator for past
yearly billing period
date of record of lowest temperature of sensor of radiator for past
yearly billing period
average temperature of sensor of radiator for previous day
current temperature of sensor of radiator
Environment temperatures
average temperature of environment for yearly billing period
(current yearly + past yearly) (just 1. 11. to 31. 3.)
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Manual for installation service and operation M2021/8a EN
average temperature of environment for past monthly billing period
(current monthly + 12 previous)
current average temperature of environment Ti(ss) for yearly billing
period (current yearly + past yearly) (in winter heating season
configured by customer)
average temperature of environment Ti(ss) for monthly billing
period (current monthly + 12 previous)
number of dates with change of temperature Ti(ss) (current monthly
+ 12 previous). Day of activation is registered when allocator during
day at least 1x updates value sTi(ss).
average temperature of environment Ti (ss) for previous day
average temperature of environment for previous day
current temperature of environment
Other features
number of days of allocator operation for monthly billing period
(current monthly + 12 previous). Day of operation is registered if
allocator during days at least 1x registers increase of consumption
state of electronic seal of allocator and external sensor
date of broken electronic seal (DD:MM)
total consumption at the moment of broken electronic seal
error state (E0000)
date of error state
total consumption at the moment of error state
number of changing to single sensor mode (current yearly + 1
previous)
number of changing to single sensor mode (current monthly + 1
previous)
option to turn off measuring in summer season
adjustable start temperature of radiator in summer season that
allocator starts to measure
option to turn off one way transmission in summer period
power of radiator (default 1000)
Kc coefficient (default 1)
Display 5 digits LCD + 2 special symbols
Protection against cheating continuous control, if thermal influence is detected, allocator is
switched to single sensor mode
mechanical seal with billing company label
electronic seal – records manipulation date when uninstalled
mechanical seal is in external sensor and connector of external
sensor
Data backup daily backup of measured values including real time
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Manual for installation service and operation M2021/8a EN
Function control automatic, can be activated and controlled by user
Dimensions 100 x 41 x 31 mm
Power supply lithium battery 3,0 V
Material ABS + PC / Al – F22
IP code IP 42
Conformity ČSN EN 834
Operating frequency 868 MHz
Transmitting power < 15 mW
Class of working cycle 1 (percentage of working cycle <0,1 %)
Transmission length per customer settings 5 22 ms
Reading period Configured by user using mask of a week.
Two way communication always using proprietary protocol metra
even in Wireless M Bus mode.
Transmission range up to 250 m (outside the building, with additional panel antenna)
Rem.: all metal parts of construction (switch rooms, armouring, lifts,
etc.) can negatively affect the range of radio signal.
Data coding yes
Data transmitter over NFC
interface and radio
date of reading = current date
serial number of allocator
date of beginning of billing period (1 28. 1 12.)
consumption of allocator for current yearly billing period
(6x) consumption of allocator for 6 past yearly billing periods
reading of allocator for current monthly billing period
(24x) consumption of allocator for 24 previous monthly billing
period
date of registering the highest temperature of sensor of radiator for
past yearly billing period
max. temperature of sensor of radiator for current yearly billing
period
max. temperature of sensor of radiator for past billing yearly period
max. temperature of radiator for current monthly billing period
(12x) max. temperatures of sensor of radiator for 12 past monthly
billing periods
min. temperature of radiator sensor for current monthly billing
period
min. temperature of radiator sensor for current yearly billing period
min. temperature of radiator sensor for past yearly billing period
(12x) min. temperatures of radiator sensor for 12 past monthly
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billing periods
date of registering lowest temperature of radiator sensor for
previous yearly billing period
average temperature of radiator sensor of current monthly billing
period
(12x) average temperatures of radiator sensor for 12 previous
monthly billing periods
number of days in operation for current monthly billing period
(12x) number of days in operation for 12 past monthly billing period
average temperature of environment for current monthly billing
period (1. 1. to 31.12.)
(12x) average temperatures of environment for 12 past monthly
billing periods (1. 1. to 31. 12.)
average temperature of environment for current yearly billing period
(1. 11. to 31. 3.)
current temperature of environment for previous yearly billing
period (11. 11 to 31. 3.)
number of days with changing temperature Ti(ss) for current and
monthly billing period
(12x) number of days with changing temperature Ti(ss) for 12 past
monthly billing periods (1. 1. to 31. 12.)
average temperature Ti(ss) for current monthly billing period (1. 1.
to 31. 12.)
(12x) average temperature Ti(ss) for 12 past monthly billing periods
(1. 1. to 31. 12.)
average temperature Ti(ss) for current yearly billing period (only 1.
10. to 30. 4.)
average temperature Ti(ss) for past yearly billing period (only 1. 10.
to 30. 4.)
average temperature of environment Ti(ss) for previous day
number of changes to single sensor mode for current yearly billing
period
number of changes to single sensor mode for past yearly billing
period
number of changes to single sensor mode for current monthly
billing period
number of changes to single sensor mode for past monthly billing
period
measuring in summer season turned on (0=no, 1=yes)
one way transmission in summer period turned off (0=no, 1=yes)
temperature of radiator for beginning of summer season
power of radiator
coefficient Kc
date of beginning of heating season (1 31. 1 12.)
date of beginning of summer season (1 31. 1 12.)
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state of electronic seal
date of breaking electronic seal
total consumption at the time of breaking electronic seal
error state (standard 0, else e.g. 2046)
date of error state
total consumption at the moment of error state
current temperature of radiator sensor
current temperature of environment
current time of allocator
total consumption
date of beginning of measuring of total consumption
average temperature of radiator sensor for previous day
average temperature of environment sensor for previous day
3.1. CONSTRUCTION
Electronic heat cost allocator E ITN 40 complies with ČSN EN 834:2014.
Allocator consist of cover and printed circuit board covered with mounting plate. Mounting plate is bolted with
cover and secured with latch and seal.
Cover, mounting plate, latch and seal are made from plastic material. There are marked values of the lowest
and highest heating medium temperature, manufacturer's mark, type of the allocator, serial number (both as
number and 2D data matrix) and optionally the partner's mark on the cover. The base plate is made of
aluminium alloy to ensure of a good thermal contact with the radiator.
To install the heat cost allocator, place it at the upper end of the aluminium back plate, push down so that
the locks in the housing fit in the aluminium back plate and push the bottom part of allocator towards back
plate. Allocator is fastened to back plate by latch and seal. Now the heat cost allocator can only be uninstall
after breaking the seal.
Device has an electrical circuitry with a 16 Bit microprocessor with extremely low current consumption, is
equipped with radio transmitter and powered by lithium battery. The accuracy of the measuring circuit is
independent of the battery voltage. The LCD display has 5 large main digits separated by dots and special
symbols.
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Design E ITN 40
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4. OPERATION MODES OF ALLOCATOR
4.1. OPERATION MODES
The allocator can be in four operation modes:
•working mode
•error mode
4.2. SUBMENU NAVIGATION
The allocator contains a simple submenus (depending on current operation mode), that allow to obtain
additional informations or perform other activities.
To switch between individual items of menu, push the button briefly. To enter the submenu, choose relevant
item and hold the button (approximately 2 seconds) until A appears on LCD. When you release the
button, designation of the 1st submenu item appears. Move in menu by short presses of the button. If the
button is not pushed for 30 seconds, the LCD returns to the main menu.
Activation process of item is the same as entering the submenu. Find the relevant item and hold the button
(for approximately two seconds), till notice A on the LCD appears.
Movement in options is the same – briefly press the button. Selected option confirmation as well – by long
(approx. 2 s) press of the button, till notice A appears on LCD.
4.3. WORKING MODE
In working mode, allocator performs temperature measurement, calculates the increase of valuecal (if
measurement conditions are met), transmits measured data, updates real time and makes some other
actions in regular intervals.
4.3.1. Menu structure in working mode
If nothing is displayed press the button briefly.
Data shown on display.
Basic:
•· Serial number of allo ator (scrolling – moves 1 character per 1 sec., starts and ends with a
space)
· Start of billing period (e.g.: u01.02.)
o In submenu allocator test, error code, date of error, reading countdown (in sec).
· Consumption for urrent annual billing period (e.g. 65534)
· Consumption for past annual billing period (e.g. 65534 SM)
o In submenu annual consumption for year 2 to 5 year, switching by pressing button, shows
value: scrolls 2018 2014
· Consumption for urrent monthly billing period (e.g. 3.2.7.6.7)
· Consumption for past monthly billing period (e.g. 3.2.7.6.7 SM)
o In submenu consumption for 2 to 24 month, switching by pressing button, shows values:
scrolls 12.2019. 1.2018 and for 4 seconds a value shows e.g. 3.2.7.6.7
Optional data (sample unit shows all)
· Power of radiator (e.g. 1000.)
· K value (e.g. 1.000)
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· Current temperature of radiator sensor (e.g. 27.65°)
· Current temperature of environment (e.g. 27.65°SM)
· Maximum temperature of radiator sensor for past annual billing period (e.g. ¯27.6°)
· Maximum temperature of radiator sensor for past monthly billing period (e.g. _27.6°)
· Average temperature of environment for past annual billing period (e.g. ¯27.6°SM)
· Average temperature of environment for past monthly billing period (e.g. _27.6°SM)
· Date (e.g. 20.01.)
· Time (e.g. 12 30)
· Total onsumption (scrolled – moves 1 character per 1 sec., begins with character C)
Display turns off after 30 seconds of inactivity and returns to first menu item.
4.3.2. Last year of battery life
Battery lifetime is programmed in the microprocessor memory and the last year of battery lifetime is indicated
on LCD by blinking of the special symbol: BAT. After finishing this time the symbol stays displayed
permanently. Calculated battery lifetime is 10 years + 2 years reserve.
4.4. ERROR MODE
In error mode the notice Error is permanently displayed and allocator does neither measure temperatures,
count the increase of consumption nor transmit measured data. Allocator just actualizes real time. Allocator
switches from working mode to error mode automatically after registration of serious error (e.g. fault in A/D
converter, when the power supply of microprocessor was interrupted and loss of data in RAM memory
occurred, etc.).
Allocator backups important data to permanent memory daily. Data in this memory are saved even if the
power supply is interrupted. Even in the case of battery failure these data are not lost. Saved data could be
read by special tools. NFC chip has a memory. Into this memory is backed up current data every day.
If E ITN 40 stops working, you can read this memory using NFC.
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5. OTHER INFORMATION ABOUT PRODUCT
5.1. ELECTRONIC SEAL REACTIVATION
The electronic seal is used for detection if allocator was removed from back plate – more in chapter 2. If you
need to re fit allocator (e.g. replace old radiator with new radiator), it is necessary to reactivate the seal.
1. Insert new latch into allocator. If use the old one, please check its condition, especially electro
conductive rubber.
2. Secure the latch with mechanical seal.
3. Read allocator with NFC
4. Install allocator to the radiator.
5.2. TRANSPORTATION
E ITN 40 allocators can be transported under following conditions:
•devices can be transported by all usual covered means of transport
•devices must be in original package
•originally packed devices must be stored and secured to avoid mechanical damages during
transportation
•devices can not be transported together with aggressive substances
•temperature during transportation from 0 °C to +55 °C
•relative humidity from 45 % to 75 %
5.3. STORAGE
E ITN 40 is an electrical device and can be stored under these conditions:
•devices must be originally packed by manufacturer and individually stored in antistatic bags
•storage temperature from +10 °C to +30 °C
•relative humidity from 45 % to 75 %
•devices must be stored in clean covered areas without aggressive substances and stored properly to
avoid mechanical damage
5.4. APPLICATION AND DISPOSAL
"This device is subject to a waste management in accordance with local legislation." More
information on www.metra su.cz
5.5. DEFECTS AND THEIR ELIMINATION
Any E ITN 40 defect should be repaired by manufacturer only.
5.6. WARRANTY
If device is installed and handled according to manufacturer instructions mentioned in Installation and service
manual, manufacturer provide warranty under the valid legislation unless agreed differently.
The warranty is void if device was used contrary to Installation and service manual or damaged:
•during transport or storage by customer or reseller
•when mounted or dismantled to the customer device
•because of improper handling or installation into other device than agreed in manual
•if the product was exposed to different environment than agreed in manual
•if mechanically or in other way damaged by user
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6. ACCOMPANYING DOCUMENTATION
6.1. PACKING
Allocators are disassembled (allocator, back plates, mounting material) and packed in the boxes of max. 100
pcs. Packing sheet is included in every box with mark of the producer, device type, number of items and their
serial numbers, packing date and the name of the operative who checked and packed the products. The lids
of boxes are marked with label "THIS SIDE UP!". The boxes are non returnable. Boxes are stored always
cover up on the standard shipping pallets.
Electronic heat cost allocator E ITN 40 is sensitive to static electricity. For this reason, each allocator is
shipped in antistatic packaging. Antistatic package should be removed just before installation.
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E-ITN 40
INSTALLATION
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7. MOUNTING METHODS
7.1. ALLOCATOR INSTALLATION
The back plate is mounted on the radiator using mounting material in compliance with EN 834:2014 and with
Installation and service manual. Mounting material is provided by manufacturer and supplied with allocator.
Installation can be done only by person professionally trained by the manufacturer.
When installing allocator, make sure the temperature sensor is pointed downwards.
Warning!
Stati ele tri ity is harmless for humans but an seriously damage ele troni devi es. When
handling or installing the produ t follow these rules:
• dis harge a umulated stati ele tri ity by tou hing the hand with a grounded metal obje t (e.g.
radiator) before installation,
• keep the produ t in antistati pa kage until installation,
• never remove PCB from the housing.
Use only original parts or parts approved by the manufa turer for installation, pay attention to the
tightening of mounting material spe ified torque (more in hapter 8.4).
7.2. ALLOCATOR BACK PLATE
The back plate is made of aluminium alloy and designed to have the best heat transfer from the radiator to
the allocator. it is necessary to install back plate to the radiator with recommended mounting material to
ensure the optimal thermal contact.
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7.3. E-ITN 40 MOUNTING PLACE ON SEGMENTED AND PANEL RADIATORS
Place with suitable relation between the displayed value and the heat emission of the radiator over a
sufficiently operating range must be determined for allocator installation. Place of installation must be
determined according to the unified criteria in single billing (accounting) unit. E ITN 40 installation must be
permanently protected against manipulation.
Warning: Failure to comply mounting procedure may result allocator malfunction!
7.3.1. Vertical position
Install E ITN 40 into 75% of the total radiator height (measured from bottom) – in relation to center of back
plate. If the height of the radiator is less than 400mm install allocator to 50 % of total height. Variations of the
mounting points height must not exceed ± 10 mm.
7.3.2. Horizontal position
For both variants of vertical installation, place E ITN 40 into the half of length L. In cause of odd number of
the spaces, place E ITN 40 into the gap closer to the end of the radiator, i.e. at radiator with 10 segments
between 5. and 6. segment. On radiators with length L>2000 mm or radiators with excessive nominal output
install two E ITN 40 placed in 25% of total radiator sized (measured from sides of radiator).
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Vertical and horizontal placement of E-ITN 40
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7.4. INSTALLATION ON SEGMENTED RADIATORS
7.4.1. Description of installation
E ITN 40 back plate should be installed on the radiator with clamps and bolts as follows:
•place back plate into the final location and fix with clamp and bolt through the centre hole,
•tighten to a torque 1 Nm,
•place the allocator into the back plate profile groove from top, align it with the base plate and push
allocator to connect it with the back plate.
When using cast iron radiator with a very rough surface (large grain) it is recommended to grind off these
grains at the place where back plate will be installed.
After installation, installation protocol has to be filled up (including date of installation, room, type of the
radiator, allocator serial number, etc.).
7.4.2. Installation differences
a) When installing on the radiators with difficult access (KALOR 3,TERMO) follow these steps:
•insert the mounting bolt through centre hole of the back plate and screw it on several threads to
the clamp,
•slide prepared set from the top between radiator segments (clamp is in upright position) and
place in the mounting height,
•tighten the back plate to a torque 1 Nm.
b) For installation on radiators with larger distance between the segments (Svratouch radiator):
•use clamp IV and insert the spacer 45 under E ITN 40 back plate.
c) For radiators with solid and long cells, as KUVAL radiators:
•use a screw with a length 80 mm.
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