thermital ACQUAHOME 25 B BLU User Manual

ACQUAHOME 25 B BLU

USER MANUAL

ENGLISH

Dear Customer, Thank you for preferring a T heating unit, a modern, high-quality product that is able to guarantee your maximum well-being for a long period of time, with high levels of reliability and safety. In particular, if working together with a Technical Assistance Centre T that is speciﬁcally prepared and trained to perform periodic maintenance, your unit will remain at maximum efﬁciency levels at minimum operating costs and if required, replacements with original spare parts can be made. This instruction manual contains important instructions and precautions that must be observed to ensure the trouble-free installation and efﬁcient functioning of your

ACQUAHOME 25 B

BLU

boiler.

Please accept our renewed thanks for your purchase Thermital

CONFORMITY

ACQUAHOME 25 B BLU

boilers conform to the following direc-

tives:

- Directive 92/42/EEC on efﬁciency requirements

- Electromagnetic Compatibility Directive 2014/30/EU

- Low Voltage Directive 2014/35/EU

- Ecodesign Directive 2009/125/CE for energy-related products

- Energy Labelling Directive 2010/30/EU

- Delegated Regulation (EU) N. 811/2013

- Delegated Regulation (EU) N. 813/2013

- Delegated Regulation (EU) N. 814/2013

ENGLISH

This manual, Code 20129620 - Rev. 0 (07/18) comprises 20 pages.

ENGLISH

CONTENTS

The following symbols are used in this manual:

CAUTION! =

Identiﬁes actions that require caution and

adequate preparation.

STOP! =

Identiﬁes actions that you MUST NOT do.

This manual, Code

- Rev. comprises pages.

GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . 4

General Safety Information. . . . . . . . . . . . . . . . . . . . . . . . . . 4

Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Description of the appliance . . . . . . . . . . . . . . . . . . . . . . . . 5

Safety and control devices. . . . . . . . . . . . . . . . . . . . . . . . . . 5

System layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Menu navigation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Navigation scheme. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

List of user parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

USE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Putting into service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Preliminary operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Start-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Adjustment of heating setpoint. . . . . . . . . . . . . . . . . . . . . . 15

Enable/disable the heating function. . . . . . . . . . . . . . . . . . 15

Adjustment of domestic setpoint . . . . . . . . . . . . . . . . . . . . 15

Enable/disable the domestic function . . . . . . . . . . . . . . . . 15

Special functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Ignition failure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Temporary or short-term shut-down . . . . . . . . . . . . . . . . . . 17

Preparing for extended periods of disuse . . . . . . . . . . . . . 17

Device cleaning and maintenance. . . . . . . . . . . . . . . . . . . 17

External cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Annual cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

RECYCLING AND DISPOSAL . . . . . . . . . . . . . . . . 18

ENGLISH

GENERAL INFORMATION

General Safety Information

This product must be installed by a legally qualiﬁed heating engineer. On completion of the installation, the installer must issue the owner with a declaration of conformity conﬁrming that the installation has been completed to the highest standards in compliance with the instructions provided by

T in this instruction manual, and

that it conforms to all applicable laws and standards.

This product must only be used for the purpose for which it is designed and made, as speciﬁed by T.

T declines all responsibility, contractual or

other, for damage to property or injury to persons or animals caused by improper installation, adjustment, maintenance or use.

The room where the boiler is installed must be properly ventilated to ensure a sufﬁcient supply of air for correct combustion.

If you notice any water leaks, disconnect the boiler from the mains electricity supply and shut off the water supply.

In case of water leaks disconnect the equipment from the power mains, close the water supply and promptly alert Technical Assistance Centre T or professionally qualiﬁed personnel.

The boiler must be serviced at least once a year. The failure to perform annual maintenance work will void the warranty of the equipment.

Periodically check that pressure in the central heating circuit, when cold, is approximately 1.5 bar and below the maximum limit speciﬁed for the boiler. If this is not the case, contact the Technical Assistance Centre

T or professionally qualiﬁed personnel.

If the boiler is not going to be used for an extended period of time, perform the operations described later in this manual.

This manual is an integral part of the equipment and therefore must be stored carefully and must ALWAYS accompany the boiler even if it is sold to another Owner or User or transferred to another plant. If it is damaged or lost, request another copy from your local Technical Assistance Centre T.

Precautions

The operation of any appliance that uses fuel, electrical power and water demands that a number of fundamental safety precautions be respected:

Do not allow children or inﬁrm persons to operate the system unsupervised.

It is forbidden to use electrical devices or equipment, such as switches, appliances, etc. if there is a smell of gas or un-burnt products. If so:

- Ventilate the room, opening doors and windows

- Close the fuel shut-off cock

- Ask for the prompt intervention of the Technical Assistance Centre

Do not touch the boiler while barefoot or wet.

Never pull, disconnect, or twist the electrical cables coming from the appliance even if it is disconnected from the mains electricity supply.

Do not obstruct or restrict the vents in the room where the boiler is installed. Adequate ventilation is essential for correct combustion.

Do not expose the boiler to the elements. It is not designed for use outdoors.

It is prohibited to leave inﬂammable substances and containers in the room where the boiler is installed.

Do not dispose of packaging material into the environment, or leave it within the reach of children, since it can become a potential hazard. Dispose of packaging material in compliance with applicable legislation.

It is forbidden to operate the boiler without water.

The equipment casing must not be removed by people without speciﬁc qualiﬁcation and expertise.

ENGLISH

Description of the appliance

The thermal unit

ACQUAHOME 25 B BLU

is a hot water generator for the heating of environments and production of domestic hot water (DHW) by means of a vitriﬁed heater. It can function at low temperature and is oil fuelled. The low NOx burner features a single-stage operation and a vertical steel combustion chamber. The boiler unit is effectively and accurately insulated with a high-density glass wool mat. The control panel includes a user interface with display and an electronic board for the thermal unit adjustment and control, which allows to manage the control and safety devices in compliance with the regulations in force.

Safety and control devices

The control panel, apart from managing the functions of the thermal unit

ACQUAHOME 25 B BLU

, allows to highlight any anomaly which may affect its correct operation, ensuring the thermal unit safety by stopping it and automatically closing the burner light oil valve. The burner control and adjustment board is also used to ensure the burner safety by managing its correct operation. Any anomaly which may affect the generator operation forces it to stop (lock-out) and is promptly signalled with a numerical error code on the regulator display.

The following are installed on the water circuit:

Safety thermostat

: ﬁtted on the generator body, it intervenes by stopping (permanent error) the thermal unit if the boiler temperature exceeds the limit threshold of 110°C;

Safety valve

: intervenes if the boiler pressure exceeds

the limit threshold of 3 bar;

Pressure transducer

: sends a signal to the electronic regulator which views and continually checks the primary circuit pressure to switch on the generator or cause it to stop in case of low pressure;

Boiler temperature probes (delivery and return)

: immersion probe on the delivery line of the generator is used by the regulator to view and check the delivery water temperature and check the correct switching on and off of the burner based on the programmed setpoint. The regulator uses the same probe to switch off the generator in case of overtemperature, before the triggering of the safety thermostat. The contact probe placed on the return line of the boiler is used by the regulator to view the return water temperature with which it calculates, together with the delivery temperature, the temperature difference between delivery and return (∆t), which allows regulating the modulation of the circulator in heating mode.

Domestic circuit temperature probe (heater)

: the immersion probe in the heater is used by the regulator to view and check the domestic hot water temperature and to manage the relevant operating parameters (DHW Setpoint, DHW request, etc.).

The intervention of a safety device indicates a potentially dangerous malfunction in the system. Contact the manufacturer’s Technical Assistance Centre immediately.

Safety devices must only be replaced by the manufacturer's Technical Assistance Centre using original spare parts. Refer to the spare parts catalogue supplied with the boiler. After making the repair, check that the appliance is working properly.

The appliance must not be put in service, even temporarily, when tampered safety devices are not in operation or have been tampered with.

ENGLISH

System layout

ACQUAHOME 25 B BLU

Electric actuator

3-way diverting valve

Main switch

Heating safety valve

Storage cylinder expansion vessel

Control panel

Heating expansion reservoir

Burner

Boiler drain cock

Magnesium anode

Storage cylinder inspection ﬂange

Storage cylinder ﬂange insulation

Storage cylinder drain cock

Storage cylinder safety valve

Storage cylinder ﬁll cock

Storage cylinder with insulation

Flame inspection window

Boiler body

Pump

Flue gas exhaust ﬁtting

Flue gas box cover

Lifting bracket

Automatic bleed valve

ENGLISH

Control panel

Controls interface

3 4

Door

Light guide

Rear light display

ENTER/RESET key: it allows accessing the main menu and restoring the operation after a stop due to an anomaly

Navigation keys

Main switch (located on the equipment rear wall)

Light Guide displaying

STAT U S DESCRIPTION

Green blinking

Thermal unit drain cycle and initialization in progress after the power

supply reset. Steady green Thermal unit on Steady red Thermal unit in alarm mode Red blinking Thermal unit in lock-out mode

ENGLISH

Display visualisation

HEAT

Bar

°C °F

Psi

OUTSIDE

1 2 3 4 5

10 11

Icon displayed when heating mode is enabled. Blinking when there is a heat demand

Icon displayed when DHW mode is enabled. Blinking when there is an DHW Demand

Icon displayed when entering the "Installer" or "Manufacturer" menu

Icon displayed when the burner of the equipment is on. The icon will be marked with a cross in case of Permanent or Temporary error.

Icon displayed when the climatic mode operation is active (Par. 2001= 1 or 2)

Celsius/Fahrenheit temperature

Displays current value

Displaying of system pressure or parameter number or external temperature

Icon displayed when the circulator is operating

Pressure in Bar/Psi

Icon displayed when the outdoor probe is connected

ENGLISH

Menu navigation

At start-up or when no key is pressed for more than 4 minutes, the display is in “basic display” mode and provides general information on the equipment operation.

In this mode, keys have the following functions:

Nr. Button Function

"+"

It increases the heating setpoint (when active/available)

"-"

It decreases the heating setpoint (when active/available)

"▲"

Raise the DHW set point (when available)

"▼"

Decrease the DHW set point (when available)

5 "ENTER/RESET"

Enters into "MENU" mode If pressed for more than 5 seconds, it resets a permanent error (Loc)

Additional functions:

Button Function

"+" with "-" It accesses enable/disable heating function mode "▲" + "▼"

It accesses enable/disable DHW production function mode

For more information, see paragraph "Enable/disable the heating function" on page 15.

"Basic display" mode

Adjustment of heating setpoint

°C

Adjustment of domestic setpoint

°C

or or

°C

ENGLISH

MENU selection

Enters into "MENU" mode when "MENU/RESET" key is pushed. The ﬁgures of the small display indicate "0000" which is the ﬁrst accessible menu.

In this mode, keys have the following functions:

Nr. Button Function

1 "+" Exits from the menu and cancels a parameter change 2 "-" Exits from the menu and cancels a parameter change 3

"▲"

Selects the following menu or increases a certain parameter value

"▼"

Selects the previous menu or decreases a certain parameter value

5 "ENTER/RESET" Enters into the selected menu/parameter or conﬁrms the parameter change

ENGLISH

Navigation scheme

"Basic display" mode

"End user" mode

Bar

°C

Example of parameter setting

change

conrmed

change

canceled

or or

ENGLISH

List of user parameters

Par.

No.

Description Range

Default set-

ting

Main menu

0000

013

Quick adjustment of direct Zone/Zone 1 heating setpoint in 0 and 3 heating modes. By connecting the zone control accessory, this parameter can be used to quickly change direct Zone/Zone 1 setpoint. This parameter simultaneously modiﬁes the value of Par. 2103.

See Par. 2103 See Par. 2103 °C

0000

023

Quick adjustment of Zone 2 heating setpoint in 0 and 3 heating modes. By connecting the zone control accessory, this parameter can be used to quickly change Zone 2 setpoint. This parameter simultaneously modiﬁes the value of Par. 2203.

See Par. 2203 See Par. 2203 °C

0000

033

Quick adjustment of Zone 3 heating setpoint in 0 and 3 heating modes. By connecting the zone control accessory, this parameter can be used to quickly change Zone 3 setpoint. This parameter simultaneously modiﬁes the value of Par. 2303.

See Par. 2303 See Par. 2303 °C

0000

047 Quick adjustment of DHW setpoint with heater See Par. 2047 °C

0000

048 Quick adjustment of DHW setpoint with instant production See Par. 2048 °C

0000

201

Stops the venting function 0 = No action 1 = Stop venting

0…1 0

0000

901

Unit of measurement for temperature 0 = °C 1 = °F

0...1 0

0000

902

Pressure unit of measurement 0 = BAR 1 = PSI

0...1 0

Info menu

1000

1101 Direct Zone/Zone 1 delivery temperature °C

1000

1102 Direct Zone/Zone 1 ambient temperature °C

1000

1201 Zone 2 delivery temperature °C

1000

1202 Zone 2 ambient temperature °C

1000

1301 Zone 3 delivery temperature °C

1000

1302 Zone 3 ambient temperature °C

1000

1001 CH ﬂow temperature °C

1000

1002 Domestic hot water temperature °C

1000

1003 Domestic cold water temperature °C

1000

1004 Outdoor temperature °C

1000

1007 Return temperature °C

1000

1033 System pressure

bar

ENGLISH

Par.

No.

Description Range

Default set-

ting

1000

1032 Error code

1000

1112 Zone 1 heating setpoint °C

1000

1113 Zone 2 heating setpoint °C

1000

1114 Zone 3 heating setpoint °C

1000

1053 Flame failure number

1000

1054 Number of ignitions

1000

1055 Number of failed ignitions

1000

1056 Total hours of operation in heating mode

h x

1000

1057 Total hours of operation in domestic mode

h x

1000

1058 Total hours of operation

h x

1000

1063 Input signal 0-10V V

Direct Zone / Zone 1 Heating Settings

2000

2103

Direct Zone/Zone 1 setpoint in heating mode Par. 2001= 0 and 3 The thermal unit adjustment determines the boiler setpoint in heating mode, using the highest value among the requests of all the active zones (Par. 1101, 1201, 1301) If Zone 1 is conﬁgured as mixed, the value set in parameter 1112 will be used as setpoint

If Zone 1 is not

enabled:

(Par. 2121, Par.

2024)

If Zone 1 is ena-

bled: BT: (Par. 2121, 45) AT: (Par. 2121,Par.

2024)

70 (AT) 45 (BT)

°C

2000

2130 Parallel shift of direct Zone/Zone 1 climatic curve -10…10 0 °C

Zone 2 Heating Settings

2000

2203

Zone 2 heating setpoint in 0 and 3 heating modes The thermal unit adjustment determines the boiler setpoint in heating mode, using the highest value among the requests of all the active zones (Par. 1101, 1201, 1301) If Zone 2 is conﬁgured as mixed, the value set in parameter 1113 will be used as setpoint.

BT: (Par. 2221, 45) AT: (Par. 2221,Par.

2024)

70 (AT)

45 (BT)

°C

2000

2230 Parallel shift of direct Zone/Zone 1 climatic curve -10…10 0 °C

Zone 3 Heating Settings

2000

2303

Zone 3 heating setpoint in 0 and 3 heating modes The thermal unit adjustment determines the boiler setpoint in heating mode, using the highest value among the requests of all the active zones (Par. 1101, 1201, 1301) If Zone 3 is conﬁgured as mixed, the value set in parameter 1114 will be used as setpoint.

BT: (Par. 2321, 45) AT: (Par. 2321,Par.

2024)

70 (AT) 45 (BT)

°C

2000

2330 Parallel shift of direct Zone/Zone 1 climatic curve -10…10 0 °C

DHW settings and system conguration

2000

2047 DHW setpoint with heater 40...65 57 °C

2000

2048 DHW setpoint with instant production 40…70 45 °C

ENGLISH

USE

Putting into service

Have the T Technical Assistance Service start up your

ACQUAHOME 25 B BLU

boiler for the ﬁrst time. Once this has been done, the boiler can be left to function automatically. Under certain circumstances, such as after long periods of disuse, the user may need to re-start it without involving the Technical Assistance Centre.

Preliminary operations

Perform the following checks before starting up the boiler:

- Check that the fuel shut-off cock and heating system shut-off cock are open

- the pressure of the hydraulic circuit, with cold water, is

1.5 bar

(value indicated on the ﬁrst screen of the control

panel display) and the circuit is not vented

- The thermal unit

ACQUAHOME 25 B BLU

is equipped

with a system load valve located inside the thermal unit

Bar

°C

- close the system load valve.

Start-up

Once you have completed all the checks listed above, proceed as follows to start up the boiler for the ﬁrst time:

- set the main switch of the system to ON and the main switch of the equipment to (I).

Once the device is on, the software version number will be displayed for a few seconds.

Once the initialization phase is complete, the display switches to “basic display” mode. In this mode, the main information on the equipment operation is displayed. The meaning of the different icons displayed is explained in paragraph Control panel. The icon

and the heating delivery temperature are displayed, either if the boiler is in stand-by mode or if a temperature request is active (icon

blinking).

To switch off the equipment, set the main switch to “0”.

Never power off the appliance before switching the master switch to the "0" position.

Never switch off the appliance with the master switch if a request is active. Always make sure that the appliance is in stand-by before switching the main switch.

Example of generator stand-by display in heating only mode (external probe not connected)

Bar

°C

- Set the room thermostat to the required temperature (~ 20°C) or, if the system has a timer or timer-thermostat, make sure that this is switched “ON” and adjusted to the required temperature (~ 20°C).;

ENGLISH

Adjustment of heating setpoint

- Press the key“+” or “-” to display the current value of the heating temperature setpoint.

°C

- Increase or decrease the setpoint according to the type of system by using the key “+” of “-”.

- To save the modiﬁcation made and go back to the initial screen, wait for 3 seconds or press the key “ENTER/ RESET”.

- Check that the thermal unit starts the ignition phase and that the display shows the icon

blinking (ambient

heating request) and the icon

- The thermal unit ignition phase will start only after the light oil pre-heating phase will be completed and will remain active until the set temperature will be reached.

Enable/disable the heating function

- Press the keys “+” and “-” simultaneously for a few seconds;

- The icon

and the current heating mode (ON or OFF)

will blink on the display;

- Press the keys “+” and “–” to select the required mode;

- Press the key “ENTER/RESET” or wait for 3 seconds to save the modiﬁcation made and go back to the initial screen.

Adjustment of domestic setpoint

- Press the key "▲" o "▼" to display the current value of domestic setpoint.

°C

- Increase or decrease the setpoint by using the key “▲" o "▼".

- To save the modiﬁcation made and go back to the initial screen, press the key “ENTER/RESET”.

Enable/disable the domestic function

- Press the keys "▲" and "▼" simultaneously for a few seconds;

- The icon

and the current domestic mode (ON or

OFF) will blink on the display;

- Press the keys "▲" and "▼" to select the required mode;

- To save the modiﬁcation made and go back to the initial screen, press the key “ENTER/RESET”.

ENGLISH

Special functions

When a special function is active, a speciﬁc message is shown on the display of the thermal module control interface.

Frost protection

When the anti-freeze function is active, the message “AFro” is displayed.

Venting

The function is automatically enabled at the ﬁrst start-up and at each reset of the power supply. During the venting, the circulator is enabled, so that the air which may be present inside the system circuit can exit through the automatic drain valve of the thermal module. The light guide status changes as indicated in the paragraph Light guide Displaying.

Anti-legionella

The function is automatically enabled at ﬁrst start-up, at each reset of the power supply or daily, if necessary. When the function is active, the message “ALE9” is displayed beside the heater temperature and the icon

blinks. The function increases the water temperature inside the heater up to 65°C and keeps it for 30 minutes. Once this time has elapsed, the control box normal operation is restored.

Ignition failure

If an ignition or operating anomaly occurs, the thermal unit display will show a text message (small digit) and a number (large digit), which vary according to the anomaly detected. For a detailed description, see the error list. There are 3 error levels:

- Permanent (Loc)

- Temporary (Err)

- Alerts (AttE)

The section with the large digit will display the error number and , according to the error / alert, a message which will cyclically blink together with the number. For a detailed description, see the error list.

Permanent Error

The text “Loc” is displayed together with the permanent er-

ror number. The icon

indicates that the burner is disabled. The equipment must be manually reset by keeping the key “ENETER/RESET” pressed.

Temporary Error

The text “Err” is displayed together with the temporary error number.

The icon

indicates that the burner is disabled.

The lock-out error must be solved.

ENGLISH

Warnings

The text “AttE” is displayed together with the alert number. The equipment is not locked out, but its functions may be limited (according to the alert).

Temporary or short-term shut-down

In the event of temporary or short-term shut-down (e.g. due to holidays), proceed as follows:

- Remove the power supply by setting the main switch of the equipment and the main switch of the system to "OFF".

- If there is a danger of frost, keep the system on. To reduce fuel consumption, set the heating set point to the minimum allowed value.

Preparing for extended periods of disuse

If the appliance is not going to be used for a long period of time, the following operations should be carried out: set the main switch of the system to OFF and the main switch of the equipment to (0);

- close the fuel cock and heating circuit water cock.

Drain the central heating circuit if there is any risk of freezing.

Device cleaning and maintenance

Please remember that THE PERSON RESPONSIBLE FOR SYSTEM MANAGEMENT MUST ENSURE THAT PROFESSIONALLY QUALIFIED HEATING ENGINEERS UNDERTAKE PERIODIC MAINTENANCE AND COMBUSTION EFFICIENCY MEASUREMENTS.

T’s Technical Assistance Centre is qualiﬁed to

satisfy these legal requirements and can also provide useful information on MAINTENANCE PROGRAMMES designed to guarantee:

- Greater safety

- Compliance with applicable legislation

- Freedom from the risk of ﬁnes in the event of spot checks.

Regular maintenance is essential for the safety, efﬁciency and durability of the boiler. Servicing is a legal requirement and must be performed at least once a year by a professionally qualiﬁed heating engineer.

External cleaning

Clean the boiler’s casing panels and control panel with a soft cloth damped in soapy water. To remove marks from the boiler casing, use a cloth damped in a 50% mix of water and denatured alcohol or a suitable cleaning product. Wipe the boiler dry after cleaning it.

Do not use abrasive products, petrol or triethylene.

Annual cleaning

At least once a year, the user must have the boiler served by

T's Technical Assistance Service or by a qualiﬁed

heating engineer.

ENGLISH

Troubleshooting

FAU LT CAUSE SOLUTION

There is a smell of fumes Fumes escaping into the air