Danfoss Heat Cost Allocator Operating guide

Operating Guide

Electronic Heat Cost Allocator

Table of Contents 1. General ..................................................................................................................................... 3

1.1 Application.......................................................................................................................................................... 3

1.2 General Guidelines........................................................................................................................................... 3

1.2.1 Hazards and Disposal .............................................................................................................................. 3

1.2.2 Changing the Battery .............................................................................................................................. 3

1.2.3 Installation with Glue .............................................................................................................................. 3

1.2.4 Warranty ....................................................................................................................................................... 3

1.2.5 Compliant Use ............................................................................................................................................ 3

1.2.6 Non-compliant Use .................................................................................................................................. 3

1.2.7 Notes regarding Installation ................................................................................................................. 3

1.2.8 Protection against Outside Influences.............................................................................................. 3

1.2.9 Data Collection while the Device is open ........................................................................................ 4

1.2.10 Transport in Original Packaging .......................................................................................................... 4

1.2.11 New Programming ................................................................................................................................... 4

1.3 Restrictions ......................................................................................................................................................... 4

1.3.1 Applications ................................................................................................................................................ 4

1.3.2 Measurement using Single or Dual Sensors ................................................................................... 4

1.3.3 Exclusion of Liability ................................................................................................................................ 4

1.3.4 Modifications .............................................................................................................................................. 4

2. Product Description ................................................................................................................ 4

2.1 Packaging ........................................................................................................................................................... 4

2.2 General Description ........................................................................................................................................ 4

2.2.1 Type ................................................................................................................................................................ 4

2.2.2 Design ........................................................................................................................................................... 4

2.2.3 Characteristics ............................................................................................................................................ 5

2.2.4 Display ...........................................................................................................................................................5

2.2.5 Electronics ................................................................................................................................................... 5

2.2.6 Versions......................................................................................................................................................... 5

2.2.7 Optical Interface ........................................................................................................................................ 6

2.2.8 Radio Wireless M-Bus .............................................................................................................................. 6

2.3 Technical data .................................................................................................................................................... 6

3. Settings .................................................................................................................................... 7

3.1 Settings ................................................................................................................................................................ 7

3.2 Operating mode ............................................................................................................................................... 9

3.2.1 Cycle ............................................................................................................................................................... 9

Operating Guide SonoHCA

Table of Contents

(continuous)

3.2.2 Single Sensor Version with Start Sensor ........................................................................................... 10

3.2.3 Dual Sensor Version ................................................................................................................................. 10

3.2.4 Comparison of the Measuring Principles ......................................................................................... 10

3.2.5 Temperature Measurement and Calculation .................................................................................. 10

3.2.6 Calculation of the Displayed Consumption Value ........................................................................ 11

3.2.7 Start of Counting ....................................................................................................................................... 11

3.3 Display and Additional Functions .............................................................................................................. 12

3.3.1 The Menu Sequences of the Digital Display................................................................................... 12

3.3.2 The Digital Display ................................................................................................................................... 12

3.3.3 Rolling Display ........................................................................................................................................... 15

3.3.4 Communication Indicator and Measuring Indicator • .......................................................... 16

3.3.5 Real Time Clock and Calendar ............................................................................................................. 16

3.3.6 Check code.................................................................................................................................................. 16

3.4 Special Functions ............................................................................................................................................. 17

3.4.1 Suppression of Summer Counting ..................................................................................................... 17

3.4.2 Annual Reset of the Consumption Value ......................................................................................... 17

3.4.3 Unit Scale and Product Scale ................................................................................................................ 17

3.5 Parameterization .............................................................................................................................................. 17

3.6 Error ....................................................................................................................................................................... 17

3.6.1 List of Errors ................................................................................................................................................. 17

4. Installation ............................................................................................................................... 18

4.1 Introduction ....................................................................................................................................................... 18

4.2 DIN Standard Requirements for the Installation .................................................................................. 18

4.3 General Restrictions ........................................................................................................................................ 18

4.4 Operating Range .............................................................................................................................................. 18

4.5 Allocator Installation Position – Standard Installation ....................................................................... 19

4.6 Mounting the Remote Sensor ..................................................................................................................... 20

4.7 Wall Mounting ................................................................................................................................................... 21

4.8 Installation of Fastening Parts Kits ............................................................................................................ 22

4.8.1 Installation to Sectional Radiator, direct mounting ..................................................................... 22

4.8.2 Sectional Radiator, wall mounting ..................................................................................................... 22

4.8.3 Installation on Folded Radiator ........................................................................................................... 23

4.8.4 Folded Radiator, wall mounting .......................................................................................................... 23

4.8.5 Installation to Panel Type Radiator ..................................................................................................... 24

4.8.6 Mounting of heat cost allocators with glue .................................................................................... 24

4.8.7 Panel Type Radiator, wall mounting .................................................................................................. 25

4.8.8 Installation to Panel-Type Radiator with Front Convection Plate ........................................... 25

4.8.9 Bathroom radiator – Towel rails ........................................................................................................... 26

4.8.10 Sectional Radiator wide .......................................................................................................................... 27

4.9 Overview mounting accessories ................................................................................................................ 27

4.10 Mounting and Sealing .................................................................................................................................... 28

5. Commissioning ........................................................................................................................28

5.1 Automatic commissioning during the installation.............................................................................. 28

5.2 Commissioning by pressing push button .............................................................................................. 29

5.3 Radio Standby ................................................................................................................................................... 29

5.3.1 Sleeping Mode ........................................................................................................................................... 30

5.3.2 Installation Mode ...................................................................................................................................... 30

5.3.3 Operation Mode ........................................................................................................................................ 30

6. Readout .................................................................................................................................... 30

6.1 Remote Radio Reading .................................................................................................................................. 31

6.1.1 General Information about the Remote Radio Readout............................................................. 31

6.1.2 WireIess M-Bus Remote Radio Readout ............................................................................................ 31

6.1.3 Readout using the Radio Central SonoCollect ............................................................................... 31

7. Rating factors ..........................................................................................................................32

7.1 Taking Measurements ..................................................................................................................................... 32

7.1.1 Rating of Radiators with Over Length or High Nominal Power ............................................... 32

7.1.2 Rating of Radiator ..................................................................................................................................... 32

7.2 Table of Rating Factors ................................................................................................................................... 33

7.3 Rating Factor according EN 834:2013 ........................................................................................................ 33

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Operating Guide SonoHCA

1. General

This manual serves as a reference for users and service personnel of the Danfoss heat cost

1.1 Application

allocators. It describes the use of the SonoHCA heat cost allocators.

The heat cost allocator is a measuring device to record the heat output of radiators in units. Units are apartments, offices, and business, commercial or industrial premises whose heat is supplied through a central heating system or via a conjoint district heating station.

The group of units constitutes one billing unit.

If one billing unit includes units with differences, for example, from a technical standpoint (in the form of different heating systems) or in terms of consumption behaviour (i.e. in the case of industrial premises and apartments), a subdivision of the billing units into unit groups may be necessary.

Each radiator is fitted with a heat cost allocator which records and assesses the heat output of the radiator and displays the consumption value.

1.2 General Guidelines 1.2.1 Hazards and Disposal

The heat cost allocators a re equipped with

respect the transpor t directives applicable in yo ur coun try.

lithium batteries . This type of batte ry falls into the category of ha zardous goods. Please

Handling of Lithium Batteries:

• Store in a dry place.

• Do not heat to more than 100°C and do not

throw into a fire.

• Do not store near a heat source.

• Do not store in direct sunlight.

• Do not short-circuit.

• Do not open or damage.

• Do not recharge.

• Keep out of reach of children.

1.2.2 Changing the Battery

The heat cost allocator’s battery is soldered. Changing the battery is neither provided for nor permitted.

Disposal

In order to protect the e nvironment, to

reduce waste of natural resources and prevent pollution, the European Uni on

has adopted a directive stipulating that electric al and electronic devices must be recovered by their manufac turers in order to ensure proper destruction or recycling.

Should you dispose of the device yourself, please get information from your local authority on recycling options.

The consumption value is the basis for allocating the heating costs to each unit, which is necessary for the annual billing of the heating costs.

The heat cost allocators are principally used in the following units:

• Collective housing buildings.

• Offices or administrative buildings.

The typical users are:

• Measuring and billing services.

• Cooperatives or property managers.

• Building service companies, letting agencies.

The heat cost allocators can be installed on:

• Sectional radiators.

• Column/tube radiators.

• Panel radiators with horizontal or vertical

water flow.

• Flat register radiators.

• Convector heaters.

1.2.4 Warranty

The warranty rights are only valid if the devices have been installed and used in compliance with regulations and if the technical guidelines in force have been followed.

1.2.5 Compliant Use

Installation of this product must comply with the installation directives described in this manual and carried out by personnel trained for this purpose.

1.2.6 Non-compliant Use

Any application other than that described above is not permitted.

1.2.7 Notes regarding Installation

Any inappropriate handling or faulty installation may result in radiator leakage. Please respect the recommendations of the installation notice for the radiator.

1.2.8 Protection against Outside Influences

1.2.8.1 Lead seal

The heat cost allocator is closed with a safety seal which cannot be removed without causing damage. It is therefore impossible to open the device without this being detected. After installation, the electronic part of the device is no longer accessible. The LCD display, the push button and the optical itnterface are protected. It is impossible to access the interior of the device without damaging it.

1.2.3 Installation with Glue

Due to their chemical composition, the use of glues emits vapours and can damage the plastic casing of the heat cost allocator.

1.2.8.2 Electronic Detection of Opening

The electronic detector detects unauthorised opening and closing of the heat cost allocator. As soon as the housing of the heat cost allocator

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1.2 General Guidelines

(continuous)

1.3 Restrictions

is opened and / or removed, the electronic detector triggers an error message. During this time, the date of opening of the case, the number of openings and the cumu-lative length of time for which the case was open are saved and may be read using the optical interface or the radio.

1.2.9 Data Collection while the Device is open

The heat cost allocators continue to collect data, even if the electronic detector is activated.

1.3.1 Applications

The heat cost allocators may not be used in the following cases:

• Steam heating.

• Air radiators.

• Floor heating.

• Ceiling radiant heating.

• Flap-controlled radiators.

• Radiators with a removable front plate

(attached with clips).

Heat cost allocators may only be attached to radiators controlled by a combination of flaps and valves if the control is disassembled or locked in the ‘open’ position.

1.2.10 Transport in Original Packaging

The heat cost allocators must be transported in their original packaging.

1.2.11 New Programming

Before each new instance of programming, save the history of previous value readings.

1.3.2 Measurement using Single or Dual Sensors

Combining the two systems in the same building or in a single calculation unit is not permitted.

1.3.3 Exclusion of Liability

Danfoss rejects all liability when the conditions of assembly and use described in this manual as well as those described by the standard EN

834: 2013 are not observed.

1.3.4 Modifications

Danfoss reserves the right, without prior notice, to make any modifications with a view to improving the product.

2. Product Description

2.1 Packaging

2.2 General Description

Contents of the SonoHCA allocator box:

Box with label describing the product

5 10-piece trays with premounted lead seal

2.2.1 Type

The electronic heat cost allocators SonoHCA operate either according to the single sensor principle with start sensor or the double sensor principle. The device has been developed and approved in accordance with the European Standard EN 83 4:2013.

2.2.2 Design

The heat cost allocator consists of a microprocessor, a lithium battery, two temperature sensors, a heat conducting aluminium back plate, a multi-functional display and a plastic housing.

1 box of 50 back plates Installation guide

The measuring circuit consists of the temperature sensors, the analogue-digital conversion, the reference resistance for standardising the measuring transformation and the microprocessor for accessing the radia-tor heat output. During each measuring the circuit tolerances are eliminated with a reference resistance and the heat cost allocator carries out an automatic self-test.

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Operating Guide SonoHCA

2.2 General Description

(continuous)

Standard aluminium back plate for nearly all existing bolts with common dimensions and mounting possibilities – thus easy installation

2.2.3 Characteristics

• Measuring by two temperature sensors, radiator and ambient temperature sensor (NTC-resistor).

• Optional measuring principle: 1 sensor mode with start sensor or two sensor mode.

• Unit scale or product scale.

• Recording of cumulated heat consumption on

the annual set day.

• Recording of 144 monthly values and 18 half monthly values for cumulated heat consumption.

• Recording of 18 monthly values for the maximum radiator temperature.

• Optical interface for the readout of the data and programming

• For heat cost allocator SonoHCA, the radio module comprises a unidirectional radio transmitter.

Two telegrams: short telegram, OMS

compliant and long telegram for Walk-by reading.User-friendly operation by push button.

• 6-digit and high-contrast LCD display.

• Automatic commissioning during the

mounting on the aluminium back plate (available when ordering).

• Check code for postcard mail-in method

• Possibility to connect a remote sensor on each

version of heat cost allocator. The remote sensor will be automatically detected by the heat cost allocator.

• Remote sensor version with 2 m cable.

• Standard aluminium back plate for nearly

all existing bolts with common dimensions and installation possibilities – thus easy installation (no cutting and welding of bolts necessary).

• Snap-on blind to cover colour shadows for increased aesthetics.

• Safe operation and fraud/manipulation detection.

• Lithium battery with a capacity of up to 10+1 year.

• Meets EN 834:2013.

Snap-on blind to cover colour shadows for increased aesthetics

2.2.4 Display

The heat cost allocator has a LCD-display with 6 large main digits on the right and 2 smaller digits on the left as well as two special symbols and one communication indicator. The main digits are separated by four decimal points. Below, please find the display segments:

Display with all active segments

Normally, the heat cost allocators are supplied with switched-off LCD-display. On request, the heat cost allocators can also be supplied with permanent LCD- display.

2.2.5 Electronics

The device has an electrical circuitry with an 8-Bit-CMOS-micro controller of the latest generation STM8L with extremely low current consumption operating at a voltage as from

1.8 V.

The temperature measuring circuit with automatic self-calibration measures the discharging time of a capacitor. The accuracy of the measuring circuit is independent of the supply voltage.

2.2.6 Versions

For each version of heat cost allocator, it is possible to plug the connector of the remote sensor to an interface inside the heat cost allocator.

Once equipped with a remote sensor, the heat cost allocator will only work for an application with remote sensor. Remote sensor version with 2 m cable.

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2.2 General Description

(continuous)

2.3 Technical data

2.2.7 Optical Interface

With a standardised optical probe the consumption and configuration values can be transferred directly to a computer. With the radio heat cost allocator all consumption values can be readout over the optical interface and over radio. The data are transmitted in M-bus-format acc. to EN13757-3. Authorised personnel can alter the configuration of the device over the optical interface with an optical probe.

Single sensor device with start sensor

for heating systems with tmmin ≥ 55 °C Calculation with set reference temperature 20 °C

Optional measuring systems:

Optional scales: Unit scale or product scale

Current supply: 3 V-Lithium-battery

Life-span with 1 battery: > 10 years

Display: Liquid crystal display (LCD-display)

No. of displayed digits: 6 digits (000000 ... 999999)

Sensor temperature range: 0 °C ... 120 °C

Exponent: n = 1.33

Radiator – performance range: 4 Watt ... 16.000 Watt

(tm

... tm

Design temperature range:

Values: Rating fac tors see digital KC-data base

Models: Compact device or remote sensor device

Set day: Freely programmable

Data storage:

Self-test: Before every measuring

Start of counting:

Satndard version: EN 834:2013

Homologation according to: HK VO : A1.0 2. 2015

Conformity: CE

Standard mounting height:

Wireless M-Bus radio communication

Frequency: 868.95 MHz

Communication: Unidirectional

Protocol: Wireless M-Bus

Encryption: AE S-128

Transmission standard: EN 13757-4, mode T1

Broadcasting interval:

Data transmission periods:

(tm

min

... tm

Necessar y rating factors: KQ, KC, (KA, KT)

Double sensor device

for heating systems with tmmin ≥ 35 °C Calculation with variable ref. temperature T-air sensor Necessar y rating factors: KQ, KC, (KA, KT)

Single sensor device with start sensor

)

max

55 °C ... 105°C / 120 °C (compact- / remote sensor)

Double sensor system

)

max

35 °C ... 105°C / 120 °C (compact- / remote sensor)

144 monthly values and 18 half monthly values for cumulated heat consumption, 18 monthly values for the maximum radiator temperature. Maximum temperature of the current and previous year, all relevant consumption values

Heating period 25°C – 40°C (programmable) Off-heating period 25°C – 40°C (programmable)

At 75% of the overall height of the radiator. If the height of the radiator is less than (<) 470 mm, the heat cost allocator must be installed at 50% BH.

Short telegram (OMS): > 120 s Long telegram (walk-by): > 120 s

Short telegram (OMS): 24 h/d, 7 days a week Long telegram (walk-by): < 12 h/d, 7 days a week

2.2.8 Radio Wireless M-Bus

The radio heat cost allocator features a transmitter circuit in the 868 MHz band with integrated antenna.

This radio module comprises a unidirectional radio transmitter which is used to transfer data according to the wM-Bus (EN 13757-4) radio communication protocol and in compliance with the OMS (Open Metering System) Release V3.0.1.

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Operating Guide SonoHCA

2.3 Technical data

(continuous)

3. Settings

3.1 Settings

Dimension

The following table can be used to determine the configuration of the heat cost allocator by combining the different settings options that follow.

Due to distinctive technical features, not all possible combinations are necessarily achievable.

Configuration sheet for SonoHCA:

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3.1 Settings (continuous)

• Position 1: Not used.

• Position 2: Allocator Date and Standard

Time:

The UTC time zone will be programmed

in accordance with the country where the allocator is in-stalled.

• Position 3: Set Day (yearly date): It is possible to program an annual set day on

which the cumulative consumption value to date is recorded.

• Position 4: Setting Winter / Summer Periods:

2 options: yes / no. If the ‘yes’ option is chosen, two different

specific heating periods (winter and summer) with different start temperatures settings depending on the current period can be distinguished.

• Position 5: Set the Start of the Summer Period:

Choose the date on which the summer period

will begin.

• Position 6: Set the Start of the Winter Period:

Choose the date on which the winter period

or the heating period will begin.

• Position 7: Unit Scale and Product Scale:

2 options: unit scale / product scale. Set the type of scale used when calculating

the display values.

By default, the KC and KQ evaluation factors

will be set to 1 for the product scale.

• Position 8: Set Cumulative Values to Zero:

2 options: set day / never. Determine whether the units’ consumption

totalizer will be reset to zero on the set day or never.

• Position 9: Single Sensor or Dual Sensor Mode:

Set the measuring method used by the

allocator.

2 options: single sensor / two sensors. Single sensor: determines the amount of

heat emitted by a radiator by measuring and assessing the radiator’s temperature with respect to that of the room temperature measured at the start and fixed at 20°C.

Two sensors: determines the amount of heat

emitted by a radiator based on the measured temperature of the radiator via the radiator temperature sensor and the ambient air sensor.

• Position 10: Elimination of Summer Counting:

2 options: yes / no. If the ‘yes’ option is chosen, consumption will

not be measured during the summer period.

• Position 11: Radiator Temperature TR , Start Counting Summer Period:

Set the threshold temperature for the start

(counting) of the allocator. When this start temperature is reached, the allocator will begin to count the consumption units.

• Position 12: Radiator Temperature TR , Start Counting Winter Period:

Set the threshold temperature for the start

(counting) of the allocator. When this start temperature is reached, the allocator will begin to count the consumption units.

• Position 13: Max. room temperature TA ,

Activation of Heat Accumulation Mode, Sum-mer Period:

Set a reference temperature in order to

avoid an incorrect measurement due to heat accumulation (e.g. if the radiator is hidden by panels, thermal accumulation). The allocator will automatically switch into single-sensor mode when the ambient temperature measurement surpasses the defined reference temperature. Following this, the calculation will use an ambient temperature set to 20°C rather than the temperature actually measured.

• Position 14: Max. room temperature TA ,

Activation of Heat Accumulation Mode, Winter Period:

Set a reference temperature in order to

avoid an incorrect measurement due to heat accumula-tion (e.g. if the radiator is hidden by panels, thermal accumulation). The allocator will automatically switch into single-sensor mode when the ambient temperature measurement surpasses the defined reference temperature. Following this, the calculation will use an ambient temperature set to 20°C rather than the temperature actually measured.

• Position 15: Minimum Temperature

Difference, Summer Period:

Set a reference value calculated using the

temperature difference between the radiator and the ambient air. According to the standard EN 834: TR - TA ≤ 5 K.

• Position 16: Minimum Temperature

Difference, Summer Period:

Set a reference value calculated using the

temperature difference between the radiator and the ambient air. According to the standard EN 834: TR - TA ≤ 5 K.

• Position 17: Standard Ambient

Temperature TA, Summer Period:

Ambient temperature value used to calculate

the unit’s consumption. Set by the standard EN 834: TA = 20°C.

• Position 18: Standard Ambient

Temperature TA, Winter Period:

Ambient temperature value used to calculate

the unit’s consumption. Set by the standard EN 834: TA = 20°C.

• Position 19: Measuring Cycle, Summer

Period:

Set a time interval to be used as an operations

measuring cycle. The allocator will therefore usually be in sleep mode.

• Position 20: Measuring Cycle, Winter

Period:

Set a time interval to be used as an operations

measuring cycle. The allocator will therefore usually be in sleep mode.

• Position 21: Commissioning of the

Allocator:

2 options: Automatic commissioning upon

installation on the back plate / By pressing the push button after installation on the back plate.

The allocator leaves the factory in sleep mode,

meaning that it does not measure or calculate consumption. The transition from sleep to installation mode can be carried out in 2

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Operating Guide SonoHCA

different ways: automatically upon installation on the aluminium back plate or by pressing the push button after having installed it on the aluminium back plate.

• Position 22: 24-hour Active Display: 2 options: yes / no. If the ‘no’ option is chosen, the display will

always be switched off. By pressing the push button, the LCD screen will become active. After 3 minutes of inactivity, the screen will automatically re-turn to deactivated mode.

If the ‘yes’ option is chosen, the display will be

active 24 hours a day.

• Position 23: Scrolling Display Menu: 2 options: yes / no. If the ‘no’ option is chosen (static display), the

menu can be changed by pressing the push button.

If the ‘yes’ option is chosen, the display will

automatically move from one menu to the next. The display duration can be configured individually for each duration.

• Position 24: Error Information Display: If an error occurs, the Err message will appear

on the LCD screen. This information will appear at the top of the menu sequence.

• Positions 25 to 39: 15 values which can be displayed.

• Position 40: Programmable Display Time for Each Value Shown.

• Position 41: Operation Mode for the Wireless M-Bus Radio:

2 options: short telegram (OMS) / long

telegram (Walk-by).

• Position 42: Transmission Interval for

Wireless M-Bus Radio Telegram:

Set a transmission interval for sending

Wireless M-Bus radio telegrams.

• Position 43: Wireless M-Bus Radio

Telegram Transmission Period.

Short telegram (OMS): 24 hours a day, 7 days a

week.

Long telegram (walk-by): 12 hours chosen per

day (programmable), 7 days a week.

• Position 44: AES-128 Encryption Activated

at Factory:

2 options: yes / no. If the ‘yes’ option is chosen, the encryption

key can be programmed according at the customer’s request.

• Position 45: Decryption Key: Contact the local Danfoss for Decryption Key.

• Position 46: Installer Password: Default password: 56781234 This may be chosen by the customer.

• Position 47: Detachable Label Attached to

the Heat Cost Allocator:

2 options: yes / no. If the ‘yes’ option is chosen, a detachable

label will be attached to the front face of the allocator.

• Position 48: Information Contained on the

Detachable Label:

The information contained on the detachable

label may be chosen by the client.

3.2 Operating mode 3.2.1 Cycle

The heat cost allocators SonoHCA operate in a cycle of 4 minutes. Most of the time, the device is in sleeping mode. Every 4 minutes the device is set into operation and operates according to the adjoining diagram.

The clock-pulse generator is a counter which is completely independent from the rest of the program. This counter is designed in a way so that it is impossible to stall the cycle or to skip one or more cycles.

Each cycle follows the adjoining diagram. The measuring and calculating processes are explained in detail later.

The tasks carried out during one cycle are taking approx. 100 ms. This means that the device is in sleeping mode more than 99.8 % of the time. It can be set into operation between two cycles over the optical probe or by pushing the button. In this case it carries out the requested task and then returns to sleeping mode.

In case an optical probe is connected or the button is pushed during the course of the cycle, the respective value is readout at the end of the cycle.

The button can be pushed for an indefinite period of time and the optical probe can be left in its position since the normal function of the device is not impaired by an influence from outside.

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3.2 Operating mode

(continuous)

3.2.2 Single Sensor Version with Start Sensor

The start sensor of the single sensor version serves as an ambient temperature sensor which mainly functions during the heating up period.

The start temperature is the threshold temperature of the radiator at which the device always starts to carry out energy ratings. For these ratings, the measured radiator temperature and an assumed ambient temperature of 20° C are used as calculation basis.

3.2.3 Dual Sensor Version

For the dual sensor version basically the same specifications apply as for the single sensor version with start sensor. However, for calculating the room temperature the real temperature, measured by the ambient temperature sensor (corrected via the corresponding radiator-dependent „Kairvalue“), is used as the basis.

3.2.3.1 Heat Accumulation Mode

In order to avoid faulty measuring due to heat accumulation (e.g. in case the radiator is hidden by panels), the device switches from a defined ambient temperature (e.g. 28°C) to the one sensor mode and calculates with an ambient temperature of 20° C.

3.2.4 Comparison of the Measuring Principles

Single sensor device with start sensor measuring principle

For heating systems with tm

≥ 55 °C

min

The heat cost allocator calculates with a set reference temperature of 20 °C

Application: Single sensor devices with start sensor are used in areas where normal ambient temperatures are given. For low temperature heating systems the double sensor device is recommended.

For radiators which are covered or blocked by fix-tures, normally the single sensor devices are used because the double sensor device is not in a posi-tion to capture the current ambient temperature due to the heat accumulation.

double sensor system which then switches over internally to the single sensor mode.

Within one billing unit, only one measuring principle (either single sensor measuring principle with start sensor or double sensor measuring principle) can be used. Mixed fitments or the use of different types of devices in the same billing unit is therefore also not allowed.

The processes for determining the K-value for the single sensor device with start sensor and the double sensor device are identical. It is only the measuring principle that is different.

3.2.5 Temperature Measurement and Calculation

The temperature is measured with an NTC – resistor. For the resistance measurement the discharging time of the capacitor is measured. The measurement is carried out as follows:

3.2.5.1 Measuring of a Resistor, Principle

1. Charging of the capacitor

2. Discharging of the capacitor through the

resistance which is to be measured. At the same time a 16+1 bit-timer starts with the discharge to measure the discharging time

3. As soon as the voltage on the capacitor

terminals reaches a certain value, an interrupt is induced and the timer stops. At the same time the discharging of the capacitor is stopped as well.

After the three mentioned stages, the timer provides a 16-bit-value which corresponds to the discharging time of the capacitor through the resistance which is to be measured. In case the resistance is known (reference resistance), the constant ratio between discharging time and resistance can be assessed.

3.2.5.2 Calculation of the Value of an Unknown Resistance (e.g. sensor resistance)

The capacitor C is loaded at constant current. The interrupt at the end of the discharge is triggered by the same threshold voltage (a fraction of the discharge voltage). If these two conditions are met, the discharge time is directly proportional to the resistance. With a reference resistance R whose exact value is known, it is now possible to

ref

calculate the unknown resistance value Rx with the following equation:

Double sensor measuring principle

For heating systems with tm

≥ 35 °C

min

The heat cost allocator calculates with a variable reference temperature T

air temperature

Application: Double sensor devices are used in areas where precise measuring of the ambient temperature is necessary and/or in low temperature heating systems.

Radiators which are covered or blocked by fix-tures are detected automatically by the

From this equation the self-calibration of the converter can be derived, which is given by measuring the discharging time through the reference resistance.

3.2.5.3 Measuring of the Radiator and Ambient Temperature

The following measurements are carried out during one cycle:

1. Measuring of the reference resistance Rref

2. Measuring of the ambient temperature sensor

NTC

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Operating Guide SonoHCA

3.2 Operating mode

(continuous)

3. Measuring of the radiator temperature sensor NTC

The measuring values are calculated with the following formula:

The reference resistance value is defined ex works with a tolerance of 0.5% with 50 ppm. The reference resistance features an excellent temperature and long-term stability.

The capacitor value and the threshold voltage have to remain stable over the whole cycle. However, they can vary at the medium- or long term without causing any failures because the self-calibration of the converter is repeated in every cycle while measuring the reference resistance.

3.2.6 Calculation of the Displayed

Consumption Value

The value displayed on the heat cost allocator is calculated as follows:

Single sensor device

Double sensor device

3.2.7 Start of Counting

The updating (increment) of the consumption value is carried out under the following conditions:

During winter period (heating period):

(TR ≥ 25 °C)

(TR ≥ 20 °C) AND (TR - TA ≥ ΔT

MIN

)

During summer period (off heating period):

(TR ≥ 35 °C)

(TR ≥ 20 °C) AND (TR - TA ≥ ΔT

MIN

)

Explanation:

TR Radiator temperature TA Ambient temperature ΔT

Minimum temperature difference between

MIN

radiator and room

3K for standard device (winter heating

period standard setting)

4K for remote sensor device (summer

heating period standard setting)

Note:

The thresholds of starting (25°C et 35°C) are indicative values. These temperatures of starting are adjusted according to the needs and specif icities of the customer.

Explanation:

TH Temperature of the radiator surface in [°C] TA Ambient temperature in [°C] Q Displayed consumption value, without

unit

Kc Factor that carries back the ΔT measured at

a normalized value

Kq Factor Kq is a numerical value of the

nominal power of the radiator stated in [KW]

Unit scale:

Kc = 1 and Kq = 1

Product scale:

Kc <> 1 and Kq <> 1

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3.3 Display and Additional Functions

3.3.1 The Menu Sequences of the Digital Display

The menu sequences

Ex-factory all menu sequences are activated. With a software the order of the menu sequences 1 - 15 can be changed in any order. However the order within the individual menu sequences 1 – 15 cannot be changed. It is also possible to hide individual menu sequences so that they are not visible to the end-user.

When reading out over the optical interface or via radio the complete set of data is always readout and transferred.

Operation of the Push Button

When pushing the button briefly the digital display always goes to the next menu sequence.

When pushing the button in one menu sequence for 2 seconds the individual values within the selected menu sequence can be accessed. When the last value within one menu sequence has been displayed, the 1st position will be displayed by pushing the button again.

If the button is not pushed for 2 minutes, the digital display returns to the cumulated consumption value.

3.3.2 The Digital Display

During normal operation the display is deactivated and can be activated by pushing the button.

Consumption Value Unit Scale

Consumption Value Product Scale

Indicazione in EURO

If the button is not pushed, the display will be active for 2 minutes only.

On request, the heat cost allocator is also available with permanent display 24h/24h or with a rolling menu displayed.

On the display of the heat cost allocator with unit scale an index u for unit is shown on the left side. If the index u is not displayed, the heat cost allocator is equipped with the product scale.

When commissioning the device this value is

000000. When reaching the value 999999, the counting restarts automatically at 000000.

The heat cost allocators have the option to display the heating cost in Euro.

The cost in Euro indicated on the display is only approximate and is based on historical values from the previous year.

The displayed cost does not necessarily represent the charges to be paid.

Manufacturer and supplier decline any claims concerning the use and interpretation of the indicated values.

This option can be activated via a software.

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3.3 Display and Additional Functions

3.3.2 The Digital Display

(continuous)

Set day Value

Check code

Time

Date

Set Day

With the index Sd the consumption value recorded at midnight of the set day is displayed.

The consumption value recorded can be in unit scale or in product scale. It’s depending of the unit setting.

If a new device has not yet reached the programmed set day, 000000 is displayed.

With the index CC the check code for the plausibility check of the manual readout is displayed.

The current time (always winter time).

The current date of the heat cost allocator.

It is possible to program an annual set day on which the cumulated consumption value as well as the maximal radiator temperature are recorded.

With the index Sd the programmed annual set day is displayed.

Date of Opening of the Device

Commissioning Date

Cumulated Duration of the Opening of the Device

Fraud Counter This value indicates how many times the fraud /

Identification Number

Each heat cost allocator is equipped with a manipulation protection which detects an unauthorised opening of the device after installation to the radiator. The date of the last opening of the device is recorded and displayed with the index od.

With the index Cd the commissioning date is displayed, i.e. the date on which the device has been activated by pushing the button or during the mounting of the aluminium back plate if the function automatic commissioning is set.

With the index du, the cumulated duration in minutes during which the device was opened is detected. This display turns up only after commissioning in case the heat cost allocator was opened or removed.

manipulation was activated.

With the index an 8 digit identification number is displayed. Ex-factory the serial number is identical with the identification number. The first two digits of the identification number are the two small digits on the left upper side of the digital display.

Running Hours With the index rh, the running hours is displayed.

This value can be compared to the battery use duration.

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3.3 Display and Additional Functions

3.3.2 The Digital Display

(continuous)

Monthly Values The cumulated consumption values are recorded

automatically at midnight on the last day of each month.

Number of monthly values: 36

The small digits on the upper left side show the number of previous monthly values. Digit 01 stands for the recent full month and digit 36 stands for the least recent month. All monthly values are set to 000000 when the device is commissioned.

Note :

Short telegram, OMS compliant: no monthly values transmitted via radio telegram. Long telegram for Walk-by reading, the first 18 monthly values transmitted via radio telegram.

Half Monthly Values The cumulated consumption values are recorded

automatically at midnight on the 16th of each month.

Number of monthly values: 18

The small digits on the upper left side indicate the number of half monthly values. Digit 41 stands for the recent half monthly value and digit 58 for the least recent half monthly value. All half monthly values are set to 000000 when the device is commissioned.

Note :

Short telegram, OMS compliant and long telegram for Walk-by reading: no half monthly values transmitted

via radio telegram.

Radiator Temperature

Ambiant Temperature

Maximum Radiator Temperature of the Current Heating Period

Maximum Radiator Temperature of the Previous Heating Period

With the index tr the current radiator temperature is displayed.

With the index tA the current ambient temperature is displayed.

With the index ΠΨ the maximum radiator temperature of the current heating period (since the Set Day) is displayed.

With the index Sd the maximum radiator temperature of the previous heating period (before the Set Day) is displayed.

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3.3 Display and Additional Functions

3.3.2 The Digital Display

(continuous)

Monthly Value for Maximum Radia-tor Temperature

Software Version

Measuring Principle

Segment Test

With the index ΠΠ the maximum radiator temperature of the currently month is displayed.

Number of monthly values: 18

Recording of 18 monthly values for the maximum radiator temperature.

The small digits on the upper left side show the number of previous monthly values. Digit 01 stands for the recent full month and digit 18 stands for the least recent month.

All monthly values are set to 000000 when the device is commissioned.

On the right side the software version x.x.x of the heat cost allocator is displayed.

The index -- or FF indicates the type of the radiator sensor:

-- = Standard device, compact sensor.

FF = Remote sensor device, remote sensor.

1 SENS = single sensor device with start sensor.

2 SENS = double sensor device.

Segment test of the display.

Error Message

wM-Bus mode

3.3.3 Rolling Display

The SonoHCA also feature the possibility of a rolling display 24h/24h.

With a software it is possible to individualize the rolling display.

Up to 15 parameters can be chosen optionally from the list below. These parameters can be combined in any order and are then shown on the rolling display.

• Consumption value.

• Time.

• Date.

• Set Day.

• Set Day value.

• Monthly values.

• Half monthly values.

• Radiator temperature.

• Ambient temperature.

• Identification number.

If an error is detected, Err is displayed in the first display sequence with the corresponding error message.

Telegram defined into heat cost allocator.

Type of telegram must be defined when ordering.

Short telegram (Short ) used.

Long telegram (LonG) used.

• Maximum radiator temperature of the previous heating period.

• Maximum radiator temperature of the current heating period.

• 18 monthly values for the maximum radiator temperature.

• Error code.

• Manipulation protection: storing of the

duration of the last manipulation with date and the accumulated duration of all manipulations in minutes.

• Fraud Counter.

• Segment test.

• Software version.

• Running hours.

• Commissioning date.

• Measuring principle, single sensor device with

start sensor or double sensor device.

• Short or long telegram for radio wM-Bus.

The duration of the display of the values can be chosen individually between 1 - 30 seconds.

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3.3 Display and Additional Functions

3.3.3 Rolling Display

(continuous)

Example:

Order and duration of display

• Pos 0: Error [5 s] (parameter ex factory, cannot be changed) (only displayed in case of an error message)

• Pos 1: Time [1 s]

• Pos 2: Segment test [5 s]

• Pos 3: Consumption value [10 s]

• Pos 4: Set Day [1 s]

• Pos 5: Set Day value [8 s]

• Pos 6: Monthly value [5 s]

• Pos 7: Blank (therefore no display).

• Pos 8 – Pos 15: Blank (therefore no display. It

is not necessary to occupy all positions).

3.3.4 Communication Indicator and Measuring Indicator •

The communication indicator displays if the heat cost allocator is currently making a calculation and/or if it communicates internally or externally over the optical or wireless interface.

The rolling display can also be deactivated by a software, i.e. the device operates as in standard menu mode except that only these values and the values of the corresponding sub-menus that have been de-fined in the rolling menu can be displayed by pushing the button. After 2 minutes during which the button has not been pushed, the display goes out.

If the arrow of the communication indicator points inwardly internal communication takes place over the optical or wireless interface.

If the arrow of the communication indicator points outwards external communication takes place over the optical or wireless interface.

If the frame of the communication indicator appears the heat cost allocator has detected a wake-up signal.

If the point indicator appears the heat cost allocator is carrying out a measuring or a calculation.

3.3.5 Real Time Clock and Calendar

The device has a 24 h real time clock and a calendar. However, the change from summer to winter time is not taken into account. The calendar is programmed until December 31

If the current date and time have to be updated over the optical interface or via radio, it is necessary to check the date of the computer first. Date and time of the device aim at those of the computer. If the reading/programming device (computer/PDA/ Smart Phone) has a wrong time, this time will be programmed into the heat cost allocator and suddenly no longer be reached at the usual time, because the time of the heat cost allocator possibly is shifted by several hours.

Important: The time on your readout / programming interface must always be set to winter time

3.3.6 Check code

A special additional feature of the electronic heat cost allocator is the check code function for the post-card mail-in method.

With especially developed algorithms a 5 digit check code is generated out of several device data. With this check code the values stated on the postcards mailed-in by tenants can be cross checked.

2099, including all leap years. The real time clock as well as the date of the heat cost allocator can be readout over the optical interface or via radio and if necessary be updated.

For this check, the following parameters are required:

• Identification number.

• The date.

• The current consumption value.

• The check code.

For the verification of the check code Danfoss places all necessary tools (programs, formulas) at the disposal of the authorized personnel.

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3.4 Special Functions

3.4.1 Suppression of Summer Counting

The period during which summer counting is suppressed can be programmed by the software.

If the heat cost allocator is in the period of summer counting suppression, consumption measuring is de-activated. If an automatic readout is carried out during this period the temperatures can be read anyway since the temperature measuring is still active.

3.4.2 Annual Reset of the Consumption Value

The function of the annual reset of the cumulated consumption value can be programmed by the soft-ware over the optical interface. One of the following options can be chosen for the reset:

• Set Day

• Never

Please note that only the cumulated consumption value is reset. All other values are not reset.

3.4.3 Unit Scale and Product Scale

For the heat cost allocators, distinction is made between the unit scale and the product scale. See chapter 7.2 Table of Rating Factors.

3.4.3.1 Advantages of the Unit Scale

If heat cost allocators are used with the same scale on all radiators, this scale is called unit scale. The display values are the same on the different radiators if the heat cost allocators are exposed to the same temperature for the same period of time.

The evaluation of the display values is carried out arithmetically with the rating factors of the calculation software to receive the final consumption values.

• Easy and quick installation of the heat cost allocator, no programming necessary.

• Possible errors by doing the scaling on site are avoided due to allocation by experts.

3.4.3.2 Advantages of the Product Scale

With the product scale, the radiator rating data are programmed in the heat cost allocator on site. The overall rating factor K is calculated directly in the heat cost allocator and thus the consumption value is displayed immediately.

• The actual consumption of each consuming point within one billing unit can be compared easily and quickly on site.

3.5 Parameterization

3.6 Error

A software allows the parameterization over the optical interface.

To protect heat cost allocator against fraud, a password has been integrated into the products, therefore also in the software. The default ‘’installer’’ password ex-factory of the heat cost allocator is ‘’56781234’’, and may be changed by the user.

The heat cost allocator displays an error message with the 3 letters “ Err. ” and a code. If several errors occur at the same time, the different codes are added together.

The error is displayed in the first position of the display menu. It will still be possible to select all the other display menus by pressing the navigation button. If the navigation button is no longer pressed for a period of 2 minutes, the error code will automatically appear again in the first position of a display menu.

Display of an error automatically disappears when the error is no longer present.

3.6.1 List of Errors

• Err. 1 Manipulation (fraud).

• Err. 2 Measuring error.

• Err. 32 Push button constantly pushed.

• Err. 64 Measured temperature not within

temperature range (0...105°C ;

0...120°C remote sensor).

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4. Installation

4.1 Introduction

4.2 DIN Standard Requirements for the Installation

To guarantee the proper functioning of the heat cost allocator SonoHCA, it is of great importance that it is installed by an expert. On one hand, a constant heat transfer between radiator and heat cost allocator has to be guaranteed. On the other hand, the installation of the heat cost allocators on a large variety of radiator types should be as easy as possible.

The installation can be carried out in two different ways.

• The standard device is installed directly on the radiator.

• For the wall-mounted version the remote sensor is installed on the radiator and the heat cost al-locator is wall-mounted.

• Heat cost allocators can be installed in heating systems where the mean temperature is between the upper operating temperature limit t limit t technical data, see chapter 2.3 Technical data).

and the lower operating temperature

max

min

max

and t

are stated in the

min

• The installation of the devices has to be durable and avoid manipulations.

• The devices have to be installed in a place where sufficient correlation between the displayed value and the heat output of the radiator is given over a maximum operating range.

• Within a billing unit (in case of predistribution of the energy consumption: within a users’ group) only heat cost allocators of the same manufacturer and the same type with identical rating systems may be used. Each device type has to be identifiable as such.

For the installation of the heat cost allocators, special fastening-parts kits are available. To avoid faulty installation, we also recommend reading the Kc-data in the data base prior to the installation.

(See chapter 7.2 Table of Rating Factors).

The heat cost allocator is an electronic device which – like all other similar devices – has to be handled with care. It is sensible to electric discharge and contacting certain areas of the PCB. Electric discharge can destroy the device or – even worse - damage it in a way that it fails after an indefinite period of time.

For this reason it is essential in any case to avoid contact with the PCB.

• Combinations of radiators and heat cost allocators with a measured value of c >

0.3 in basic condi-tion are not permitted. In exceptional cases c-values of up to 0.4 are permitted within a billing unit if the concerned heating surface does not exceed 25 % of the overall heated surface or if the mean ambient temperature is above 80°C. Heat cost allocators may only be installed to radiators where the c-value is known at the time of billing.

4.3 General Restrictions

Electronic heat cost allocators cannot be used with steam heating, floor heating, ceiling radiant heaters, flap-controlled radiators and electrical radiator.

In case of combined valve- and flap-controlled radiators, the installation of an electronic heat

Convector heaters where the performance can be altered by an electric blower as well as heat towel racks with an electric heating cartridge may only be equipped with an electronic heat cost allocator if the additional electric attachments are dismounted or shut down.

cost allocator is only permitted if the flap control is dismounted or maintained in position „open“.

4.4 Operating Range

SonoHCA can be used in heating systems with the following mean heating medium temperatures:

For single sensor devices with start sensor

A heat cost allocator can be used in heating systems where the suitability of the system is in line with the operating conditions for which the heat cost allocator has been approved.

• 55°C…105° C for standard heat cost allocator.

• 55°C…120°C for wall-mounted heat cost

allocator (remote sensor).

For double sensor devices

• 35°C…105° C for standard heat cost allocators.

• 55°C…120°C for wall-mounted heat cost

allocators (remote sensor).

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4.5 Allocator Installation Position – Standard Installation

The installation position on the radiator is directly related to the type of radiator, its heating power and the heat cost allocator. To guarantee the correct data collection, the heat cost allocators must be installed and used in a certain position in accordance with requirements

• The SonoHCA heat cost allocator is always installed in the centre of the overall length (0.5 x BL) of the radiator, at a height of ¾ of

• If the height of the radiator is less than (<) 470 mm, the heat cost allocator must be installed at 50% BH.

The radiator’s heat is transmitted directly via the installation back plate to the device’s temperature sensor or to its remote sensor

the overall height (0.75 x BH) measured from the bottom.

• If the radiator has a length of more than 3 m, two heat cost allocators must be installed.

General notes:

• The spacing for welding the M3 threaded bolts must be 5 cm. Before welding, the lacquer has to be removed from the welding points. It must be ensured that the bolts are welded onto a water-bearing area or a flute.

• Only use M3 bolts with a maximum length of 8 mm or there is a risk that the device will

be damaged.

These radiators are considered to be 2 radiators arranged next to each other.

• Welding to aluminium radiators is not permitted.

• If the radiator has an even number of sections the heat cost allocator should be installed between the middle sections.

• If the radiator has an uneven number of sections the device should be installed next to the valve-sided middle section.

• Mount the back plate through the 2 oval holes, adjusted to the top edge of the holes.

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4.6 Mounting the Remote Sensor

For each version of heat cost allocator, it is possible to plug the connector of the remote sensor into an interface inside the heat cost allocator.

The remote sensor will be automatically detected by the heat cost allocator.

Return the heat cost allocator and plug the connector of the remote sensor into the interface inside the heat cost allocator.

Proceed to the commissioning of the heat cost allocator on the aluminium back plate. Take care

not to stick the cable.

Remark concerning the recognition of the remote sensor:

Once heat cost allocator is fixed with/against the aluminium back plate, the LCD-display will show the following message during few seconds:

Once equipped with a remote sensor, the heat cost allocator will only work for an application with re-mote sensor.

Remote sensor version with 2 m cable. The cable includes a stopper-knot.

Stopper-knot

Insert the remote sensor cable into the groove provided up to the slot of housing.

Place the stopper-knot inside the housing. The knot will avoid any traction on the con nect or.

Once heat cost allocator has recognized the remote sensor, push the seal pre-installed by Danfoss in the slot of the housing. Then press until the seal clicks into the aluminium back plate.

Respect the color code of the radiator sensor and the remote sensor. For Heat cost allocator SonoHCA the radiator sensor and the remote sensor are manufactured in two colors white and yellow.

Once equipped with a remote sensor, the heat cost allocator will only work for an application with remote sensor.

• The index FF indicates that the heat cost allocator has recognized the remote sensor.

• If the remote sensor is not detected by the device, the index -- will be displayed. The index -- indicates also a standard device with a compact sensor. If the remote sensor is not recognized, check the plug connector in the heat cost allocator.

If the remote sensor is disconnected from the heat cost allocator, an error message will be displayed.

During the commissioning of the heat cost allocator on the aluminium back plate, there are 2 possibilities to turn on the heat cost allocator:

1. By an automatic commissioning during the mounting on the aluminium back plate.

See chapter 5.1 Automatic commissioning

during the installation

By pushing the push button. See chapter

Commisoning by pressing push button.

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4.7 Wall Mounting

The heat cost allocator has to be wall-mounted if the overall height of the radiator is less than 250 mm or if, for aesthetical reasons, the heat cost allocator cannot be mounted directly onto the radiator.

In this case, the heat cost allocator is wallmounted on the side opposite to the valve and at a minimum distance from the radiator of 10 cm.

088H2424 088H2425

088H2420

• After marking and drilling the holes, the

aluminium profile is fastened with 2 metal screws and 2 spring washer.

• The parts necessary for the wall-mounting are included in the corresponding fastening-parts kits for the installation of the remote sensor.

• After installation of the device to the wall and the sensor to the radiator, the sensor cable is laid in a cable duct.

088H2423

• Mount the back plate through the 2 oval holes

adjusted to the top edge of the 2 oval holes.

Mounting Accessories Part . No.

2 plastic dowels Ø5 mm 3.25 088H2424

1 aluminium back plate (supplied with SonoHCA)

2 spring washers 088H2420

2 oval head wood screws 3 x 35 088H2423

088H2425

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4.8 Installation of Fastening Parts Kits

4.8.1 Installation to Sectional Radiator, direct mounting

• For radiators made from cast iron it is

necessary to apply heat transfer compound (Electrolube HTS) onto the contact surfaces of the aluminium profile before installation. Mount the back plate through the little hole in the middle.

4.8.2 Sectional Radiator, wall mounting

088H2408

088H2425

088H2420

08 8H 2412

Mounting Accessories Code No.

1 tensioning bracket 088H2408

1 aluminium back plate (supplied with SonoHCA)

1 cylinder head screw M4 x 40 088H2412

1 spring washer B 4 088H2420

088H2425

• The remote sensor has to be fixed in the

receiver housing with adhesive to avoid loosening.

• The contact surfaces of the cover angles have

to be coated with adhesive before bringing them together.

088H2408

Remote sensor 08 8H2410

088H2420 08 8H 2412

088H2406

Mounting Accessories Code No.

1 tensioning bracket 088H2408

1 aluminium profile „receiver housing“ 088H2410

1 spring washer B 4, DIN 128 088H2420

1 cylinder head screw M4 x 40 (with crosshead)

2 cover angles, white 088H2406

2 plastic dowels Ø5 mm 3.25 (wall) 088H2424

2 oval head wood screws 3 x 35 (wall) 088H2423

088H2412

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Operating Guide SonoHCA

4.8 Installation of Fastening Parts Kits

(continuous)

4.8.3 Installation on Folded Radiator

• Mount the aluminium back plate through the small round hole.

Mounting Accessories Code No.

1 hexagon nut B M4, DIN 934 088H2413

2 bracing angles 088H2421

2 spring washers B4, DIN 128 088H2420

1 oval head screw M4 x 30 088H2411

1 aluminium back plate (supplied with SonoHCA)

088H2425

08 8H 2413 08 8H2321

088H2425

088H242 0 0 88 H2411

• If necessary use 2 x 2 bracing angles to

improve more stability (photo) and, if needed, short the screw.

Mounting Accessories Code No.

2 hexagon nut B M4, DIN 934 088H2413

2 x 2 bracing angles 088H2421

4 spring washers B4, DIN 128 088H2420

2 oval head screw M4 x 30 088H2411

1 aluminium back plate (supplied with SonoHCA)

088H2425

4.8.4 Folded Radiator, wall mounting

• The remote sensor has to be fixed in the receiver housing with adhesive to avoid loosening.

• The contact surfaces of the cover angles have to be coated with adhesive before bringing them together.

08 8H2 415 08 8H2414

088H24 09

088H2405

088H24 07

Mounting Accessories Code No.

1 tensioning nut 088H2415

1 tensioning bolt 088H2414

1 aluminium profile « receiver housing» 088H2409

1 safety plate 088H2405

2 cover angles, white 088H2407

2 plastic dowels Ø5 mm 3.25 (wall) 088H2424

2 oval head wood screws 3 x 35 (wall) 088H2423

Operating Guide SonoHCA

4.8 Installation of Fastening Parts Kits

(continuous)

4.8.5 Installation to Panel Type Radiator

• Mount the back plate through the 2 oval holes adjusted to the top edge of the 2 oval holes.

Mounting Accessories Code No.

2 threaded bolts M3 x 8 (see pag e 19!) 088H2422

2 spring washers B3, DIN 137 088H2418

2 slotted nuts M3, DIN 546 088H2416

1 aluminium back plate (supplied with SonoHCA)

Tool: Screw driver size 5 for M3

088H2425

Mounting Accessories Code No.

2 threaded bolts M3 x 8 (see pag e 19!) 088H2422

2 Nuts M3 6-kant size 5. 5 with flange -

1 aluminium back plate (supplied with SonoHCA)

Tool: Socket wrench hexagonal size 5.5

088H2425

088H242 2

088H2425

08 8H2418 08 8H2416

Mounting Accessories Code No.

2 threaded bolts M3 x 8 (see pag e 19!) 088H2422

2 Nuts M3 mit 6 -kant size 5.5 -

1 aluminium back plate (supplied with SonoHCA)

Tool: Socket wrench hexagonal size 5.5

088H2425

Mounting Accessories Code No.

Silicone glue Pactan 6010, (Vendor: Tremco Illbruck GmbH & Co. KG D-92439 Bodenwöhr, T +49 (0) 9434 208 0)

1 aluminium back plate (supplied with SonoHCA)

Tool: Acetone, Cotton wool

088H2426

088H2425

4.8.6 Mounting of heat cost allocators with

glue

Of using glue for the mounting of heat cost allocator, please r efer to the Standard EN83 4.

Mounting Accessories Code No.

Silicone glue Pactan 6010, (Vendor: Tremco Illbruck GmbH & Co. KG D-92439 Bodenwöhr, T +49 (0) 9434 208 0)

1 aluminium back plate (supplied with SonoHCA)

Tool: Acetone, Cotton wool

088H2426

088H2425

• Clean the aluminum back plate with Acetone soaked cotton wool.

• Clean the gluing spot on the radiator with Acetone soaked cotton wool.

• Before and after the gluing, trash the first and last 10 cm of glue from the cartridge.

• Assemble the heat cost allocator: Aluminum back plate to body and seal it.

• Apply 2 tracks of Pactan glue to the aluminum back plate, left and right of the channel.

• Press the heat cost allocator to dedicated spot on the radiator and sway the heat cost allocator to dispense the glue evenly.

• Press firmly and align. Wait 2-3 minutes check, align and press. Make sure the heat cost allocator is mounted straight. The heat cost allocator must hold by itself. After 10 hours the heat cost allocator is firmly glued to radiator.

• Remove redundant glue with a screw driver. Clean the radiator with paper towels.

Removal of glued heat cost allocators

• Remove the aluminum back plate with a screw driver size 2 and a hammer: Position the screw driver carefully in the middle channel and hammer until the aluminum plate can be removed.

• Remove glue carefully with a carpet cutter and clean glued surface with Acetone.

Operating Guide SonoHCA

4.8 Installation of Fastening Parts Kits

(continuous)

4.8.7 Panel Type Radiator, wall mounting

• The remote sensor has to be coated with heat transfer compound (Electrolube HTS) on the contact surface.

088H242 2

Remote sensor

088 H2417

088H2404

Remain inside sensor Detached part

• Turn on the pull-off nuts 088H2417 till it

breaks. After put on the HK-sensor cover to ensure the manipulation protection.

088H2424 088H2425

088H2420

088H2423

• Mount the back plate through the 2 oval holes

adjusted to the top edge of the 2 oval holes.

Mounting Accessories Code No.

2 threaded bolts M3 x 8 088H2422

2 pull-off nuts M3 088H2417

1 HK-sensor cover 088H2404

2 plastic dowels Ø5 mm 3.25 (wall) 088H2424

2 oval head wood screws 3 x 35 (wall) 088H2423

4.8.7 Panel Type Radiator, wall mounting

• The contact surfaces of the aluminium screws have to be coated with heat transfer compound (Electrolube HTS).

• The aluminium screws have to be fastened with adhesive to avoid loosening.

088H2425

08 8H2419

Mounting Accessories Code No.

3 sheet-metal screws 2.9 x 9.5 088H2419

1 aluminium back plate 088H2425

Operating Guide SonoHCA

4.8 Installation of Fastening Parts Kits

(continuous)

4.8.9 Bathroom radiator – Towel rails

Heat cost allocator mounted vertically on distributor or collector part.

• Assembly with 2 threaded bolts welded on 75% BH +50mm on the side or front of the flow dis-tributor or return collector.

Mounting Accessories Code No.

2 threaded bolts M3 x 8 (see pag e 19!) 088H2422

2 spring washers B3, DIN 137 088H2418

2 slotted nuts M3, DIN 546 088H2416

1 aluminium back plate (supplied with SonoHCA)

Tool: Screw driver size 5 for M3

088H2425

Heat cost allocator mounted horizontally on cross tubes

• Assembly to the nearest possible place to the flow place or return place on the cross tubes on 75% BH with 2 tensioning brackets .

Mounting Accessories Code No.

2 Equerre de f ixation 088H2408

1 Profil aluminium (livré avec le répartiteur) 088H2425

2 Vis cylindrique M4 x 40 088H2412

2 Rondelles B 4, DIN128 088H2320

Operating Guide SonoHCA

4.8 Installation of Fastening Parts Kits

(continuous)

4.8 Overview mounting accessories

4.8.10 Sectional Radiator wide

088H2428

088H243 0

088H2427

088H2425

08 8H 2412

088H2429

• Mount the back plate through the 2 oval holes

adjusted to the top edge of the 2 oval holes.

Mounting Accessories Code No.

2 tensioning bracket 50mm 088H2428

2 tensioning bracket 65mm 088H2433

1 aluminium back plate (supplied with SonoHCA)

Designation Code No.

Replacement seal 1000 pieces 088H2400

088H2425

Mounting Accessories Code No.

1 heat conduc tor aluminium plate 60mm 088H2427

2 cylinder head screw M4 x 40 088H2412

1 cylinder head screw M3 x 10 088H2429

1 Nut M3 088H2430

Aluminium back plate 088H2425

Plastic blind cover 088H2401

Optical head USB 088H2402

Optical head holder 088H2403

Cover for sensor 088H2404

Safety plate 088H2405

Cover angles, white , Sectional radiator (Protection plate white radiator with sections) 088H2406

Cover angles, white , Folded radiator (Protection plate white corrugated radiator) 088H2407

Tensioning bracket (Angle bracket) 088H2408

Aluminium profile «receiver housing» (Aluminium plate case support for corrugated radiator)

Aluminium profile «receiver housing» (Aluminium plate case support for radiator with sec tions)

Raised head screw M4 x 30 088H2411

Pan head screw 4 x 40 088H2412

Hexagon Nut B M4, DIN 934 088H2413

Pins 088H2414

Tensioning nut 088H2415

Slotted nuts M3, DIN 546 088H2416

Two -nu ts M3 088H2417

Spring washers B3, DIN 137 088H2418

Tapping screw 2.9 x 9.5 088H2419

Spring washers 088H2420

Angle spreader 088H2421

Headless pins M3 x 8 088H2422

Crosshead wood screws 3 x 35 088H2423

Plastic screw plug Ø5 mm 3.25 088H2424

Aluminium plate case support for front plate radiator 088H2425

Glue Pactan 6010, 2 cartridge 310 ml 088H2426

Heat conductor aluminium plate 60mm 088H2427

Angle bracket 50mm 088H2428

Cylinder screw M3 x 10 088H2429

Nut M3 088H2430

088H2409

088H2410

Operating Guide SonoHCA

4.10 Mounting and Sealing

5. Commissioning

After installation of the respective fasteningparts kit to the radiator, the heat cost allocator can be mounted and sealed by the installer as described below:

1. The heat cost allocator is placed at the upper end of the aluminium back plate. Move the heat cost allocator down so that the hooks in the housing fit in the aluminium back plate.

3. Push the seal preinstalled by Danfoss in the slot of the housing, then press until the seal clicks into the aluminium back plate.

Ex-factory the heat cost allocators SonoHCA are in the so-called sleeping mode. In this mode no measuring is carried out and thus no consumption values are calculated. Furthermore the digital display, the radio communication options as well as the device opening detection are deactivated. Only the optical communication interface is available.

The date and time are running in the background.

2. The heat cost allocator is placed on the aluminium back plate in the direction of the arrow.

4. Now the heat cost allocator can only be opened by destroying the seal.

Transition from sleeping to installation mode is achieved by pushing the button once when the heat cost allocator is mounted on the aluminium back plate or by an automatic commissioning during the mounting on the aluminium back plate.

After the commissioning and before leaving a new site, we recommend to perform a radio read out test and to create an installation protocol, to ensure that all the radio communication between the heat cost allocators and the radio central or radio modem was successful.

5.1 Automatic commissioning during the installation

Once heat cost allocator is fixed with/against the aluminium back plate, the LCD-display will show the following message:

The index FF indicates that the heat cost allocator has recognized the remote sensor.

If the remote sensor is not detected by the device, the index -- will be displayed.

The index -- indicates also a standard device with a compact sensor.

This message will be displayed during 5 seconds and after that, the transition from sleeping mode to installation mode will be done automatically.

Transition from sleeping to installation mode is achieved automatically after 5 seconds:

The • symbol indicates that the heat cost allocator is in installation mode.

Once installed on the back plate or the wall, the heat cost allocator switches automatically from the installation mode into the operating mode at the second transition of midnight.

Operating Guide SonoHCA

5.2 Commissioning by pressing push button

5.3 Radio Standby

Once heat cost allocator is fixed with/against the aluminium back plate, the LCD-display will show the following message:

The index FF indicates that the heat cost allocator has recognized the remote sensor.

If the remote sensor is not detected by the device, the index -- will be displayed.

The index -- indicates also a standard device with a compact sensor.

This message will be displayed during 2 minutes before the LCD-display will switch off.

Transition from sleeping to installation mode is achieved by pushing the push button during

3 seconds:

The • symbol indicates that the heat cost allocator is in installation mode.

Once installed on the back plate or the wall, the heat cost allocator switches automatically into operating mode at the second transition of midnight.

In order to achieve a user-friendly and powersaving radio standby, the radio heat cost allocator features the following different operating modes:

* : SLEEP information will be displayed by pushing the push button.

Transition from sleeping mode to installation mode is achieved by two different ways:

• Pushing the push button once the heat cost allocator is mounted on the aluminium back plate.

• An automatic detection during the mounting on the aluminium back plate. This function

Operating Guide SonoHCA

5.3 Radio Standby

(continuous)

5.3.1 Sleeping Mode

Ex-factory the radio heat cost allocator is in sleeping mode, but the internal clock and the date are running.

Current consumption is reduced to a minimum since no measuring and no calculations are carried out. Only the optical communication interface is available.

Transition from sleeping to installation mode is achieved by pushing the button once the heat

5.3.2 Installation Mode

The • symbol indicates that the heat cost allocator is in installation mode.

During the installation mode all functions of the radio heat cost allocator SonoHCA are carried out.

5.3.3 Operation Mode

The choice of the telegram is done when ordering. It is not possible to se lect the telegram typ e on the device itself.

5.3.3.1 Readout over the short telegram (OMS compliant)

With this operating mode, SonoHCA transmits data:

• Transmission interval each 120 seconds

(minimum).

• Radio reading, 24h/24h.

cost allocator is mounted on the aluminium back plate or by an automatic commissioning during the mounting on the aluminium back plate (must be specified when ordering).

When the device switches from sleep mode to installation mode, the following counters are automatically reset to zero:

• Current totaliser, totaliser at set day, historical totaliser values.

• Max. radiator temperature.

• For heat cost allocator SonoHCA, an

installation telegram is activated during the installation phase. Data are transmitted each 30 seconds (short and long telegram) till at the end of the second day at midnight.

The radio heat cost allocator SonoHCA switches automatically into operating mode at the end of the second day at midnight.

If heat cost allocator is removed from the aluminium back plate during the installation mode, the heat cost allocator switches to the sleeping mode.

5.3.3.2 Readout over the long telegram for

Walk-by reading

With this operating mode, the SonoHCA transmits data:

• Transmission interval each 120 seconds (minimum).

• Radio reading and periods, 12h per day (programmable), 7days/7days.

6. Readout

The current and monthly values recorded by the heat cost allocator SonoHCA as well as several other parameters can be readout over the optical interface or also over radio.

The following parameters are transmitted:

Optical Interface:

• Identification number (information in header).

• Date and time.

• Consumption value.

• Set Day.

• Set Day value.

• Maximum radiator temperature of previous

heating period.

• 36 monthly values and 18 half monthly values for cumulated consumption.

• Rating factor KC.

• Rating factor KQ.

• Current radiator temperature.

• Current ambient temperature.

• Maximum radiator temperature of the current

heating period.

• Manipulation protection:

- Duration of the manipulations.

- Date of the last manipulation.

- Manipulation counter.

• Error code.

• Firmware version.

• Commissioning date.

• State of parameters.

• 36 half monthly values for the average

ambient temperature.

• 18 monthly values for the maximum radiator temperature.

Operating Guide SonoHCA

6. Readout (continuous)

6.1 Remote Radio Reading

The following parameters are transmitted by

SonoHCA wM-Bus:

Short telegram, OMS compliant :

• Identification number (information in header).

• Date and time.

• Consumption value.

• Set Day.

• Set Day value.

• Error code.

• Current radiator temperature.

• Current ambient temperature

• State of parameters.

Long telegram for Walk-by reading:

• Identification number (information in header).

• Date and time.

• Consumption value.

6.1.1 General Information about the Remote Radio Readout

The transmission of radio data depends on the technical specifications of the buildings and their surroundings. Due to these external factors, a readout may not be possible at certain times and in certain locations. It is solely incumbent on the user to check the radio propagation conditions at the planned installation point.

• Set Day.

• Set Day value.

• 18 monthly values for the cumulated

consumption.

• Current radiator temperature.

• Current ambient temperature.

• Manipulation protection:

- Manipulation counter.

• Error code.

• Commissioning date

• State of parameters.

AES 128 bits encryption is available for all radio versions.

Short or long telegram rad io wM-Bus

The choice of the telegram is done when ordering. It is not possible to se lect the telegram typ e in the device itself.

6.1.2 WireIess M-Bus Remote Radio Readout

The Wireless M-Bus radio communication interface enables data to be relayed using Wire

less M-Bus radio protocol (EN 13757-4) and complies with open metering system (OMS) specifications version V3.0.1.

The SonoHCA uses one-way radio technology and transmits the consumption data and

saved settings every 120 seconds for short (OMS) or long (walk-by) telegrams.

Since the SonnHCA radio heat cost allocator uses one-way radio technology, it must be

used with a SonoRead 868 mobile data receiver and a smartphone with the SonoAPP software program.

6.1.3 Readout using the Radio Central SonoCollect

The radio central Wireless M-Bus SonoCollect receives radio data from the SonoHCA or from other Wireless M-Bus devices.

As the SonoHCA uses one-way radio technology, it must be used with a SonoCollect Wire-less M-Bus and a PC with the corresponding software program.

Operating Guide SonoHCA

7. Rating factors

7.1 Taking Measurements

The value displayed by the heat cost allocator has to be converted to the value of the actual heat output of each radiator. Thereby the design and the performance of the radiator as well as the mode of installation have to be taken into account.

Therefore each radiator has to be identified precisely by taking measurements. The following data have to be established:

• Design and make of radiator

• Overall length

• Overall height

• Overall depth

• Number of sections

• Pitch

• In-line configuration

7.1.2 Rating of Radiator

For each radiator type the K-value is calculated according to the following diagram:

7.1.1 Rating of Radiators with Over Length or High Nominal Power

If the radiator has an overall length of approx. 3 m we strongly recommend installing two heat cost allocators.

Under certain circumstances minimal flows might not be noticed on these radiators. The same applies for radiators with an extremely high nominal output of more than 10.0000 watt = 10kW.

At least two heat cost allocators should be installed to these radiators. The standard performance of each radiator is divided by the number of heat cost allocators installed.

Example: Standard performance KQ= 16.000 W = 16 Number of heat cost allocators installed to the radiator = 2 KQ individual = 16 / 2 = 8

The heat cost allocator determines the heat output of the radiator, displays the consumption and records the consumption values on the set day.

The heating medium temperature is captured by the temperature sensor installed to the radiator. Thus the heat output of the radiator is calculated in consideration of the radiator performance.

These calculations are started as soon as the temperature difference between ambient temperature and heating medium temperature is bigger than the parameterised value.

Out of this functional principle the necessity arises to rate the display of the heat cost allocator. For the calculation of the heat output of the radiator it is not sufficient to measure the heating medium temperature. Radiators with different performances also feature different

medium temperature is the same. Furthermore different designs lead to different measuring conditions for the temperature sensor installed to the radiator.

K: Rating factor total KQ: Rating factor for the standard performance

of the radiator, stated in KW. This value is calculated with the data received by taking measurements and the manufacturer’s data.

KC: Rating of the C-value of the radiator

temperature sensor. For each type of radiator this value is measured on the test rig. The respective KC-value can be taken from the table with the rating factors.

KT: Rating of the design ambient temperature.

Normally KT = 1.

For the definition of the rating factors according to EN 834, please see chapter 9.3.

heat output quantities even if the heating

Operating Guide SonoHCA

7.2 Table of Rating Factors

7.3 Rating Factor according EN 834: 2013

A detailed summary of Kc values in Excel / PDF format is available upon request.

There is also a PC software program available at the following website:

http://www.thermosoft2000.de/eng/

Excerpt

Rating factor (Chapter 3.36):

With the following rating factors the display values of each heat cost allocator can be converted into consumption values which are suitable to be used for billing the heating costs according to consumption.

Rating factor KQ for the heat output of the radiator (Chapter 3.37 and 5.3.1):

The rating factor KQ is the (non-dimensional) numerical value of the standard performance of the radiator stated in watts or kilowatts.

The thermal output of a radiator in a thermally stable test booth at flow, return and air temperatures of 90 °C, 70 °C and 20 °C, the air temperature being measured at a height of 0,75 m above the floor and a distance of 1,5 m in front of the heating surface, is the reference output relevant for the rating factor KQ (reference system Q(60 K)).

Rating factor KC for the thermal coupling of the sensors (Chapitre 3.38 et 5.3.2):

The rating factor Kc takes into account the different thermal couplings to the temperature sensors and the different designs of the effective heating surfaces.

Kc is calculated as the quotient of the basic counting rate RB and the counting rate RE at the temperatures of the sensors on the radiator to be rated operated at base condition:

Rating factor KT for rooms with low design ambient temperatures which deviate from the basic reference air temperature (Chapter 3.39)

For heat cost allocators with the single sensor measuring system, the rating factor KT takes into account the change in performance and the change in temperature of the sensors at design ambient temperatures which are lower than the reference temperature.

Resulting Rating Factor K (Chapter 5.3.3)

The overall rating factor K is received by multiplying the individual rating factors:

Operating Guide SonoHCA

Danfoss Heat Cost Allocator Operating guide

Specifications and Main Features

Frequently Asked Questions

User Manual