thermital ACQUAHOME 25 B, ACQUAHOME 25 BS User Manual

ACQUAHOME 25 B - 25 BS

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 - 25 BS

boiler.

Please accept our renewed thanks for your purchase. Thermital

CONFORMITY

ACQUAHOME 25 B - 25 BS

boilers conform to the following di-

rectives:

- Directive 92/42/EEC on efficiency requirements

- Electromagnetic Compatibility Directive 2014/30/UE

- Low Voltage Directive 2014/35/UE

- 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 20112806 - Rev. 2 (05/17) 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 devices ................................... 5

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

Control panel ....................................8

Electronic control unit.............................. 9

Navigation scheme............................... 10

USE ..................................... 11

Putting into service...............................11

Preliminary operations ............................ 11

Start-up........................................ 11

Ignition failure...................................12

Resetting the burner and safety thermostat............12

Menu settings...................................13

Temporary shutdown ............................. 15

Preparing for extended periods of disuse .............15

Cleaning and servicing the boiler ................... 16

External cleaning ................................ 16

Annual cleaning ................................. 16

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

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

ENGLISH

GENERAL INFORMATION

General Safety Information

Check that the product is complete, undamaged and as ordered as soon as you receive it. Report any discrepancies or damage to the

T dealer

who sold it.

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.

The boiler must be serviced at least once a year.

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 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

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.

Do not touch the boiler while barefoot or wet.

Never clean or service the boiler without first disconnecting it from the mains electricity supply by turning the mains power switch and the control panel switch OFF.

Do not tamper with or adjust the safety or control devices without prior authorisation and instructions from the manufacturer.

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.

ENGLISH

Description of the appliance

The

ACQUAHOME 25 B - 25 BS

boiler produces hot water for central heating and also produces domestic hot water in an integrated 60 litre storage cylinder. It can function at low temperature and is oil fuelled. The single stage oil burner has a vertical steel combustion chamber. Model

ACQUAHOME 25 BS

(unlike model

ACQUAHOME 25 B

) has a sealed chamber. The boiler body is thoroughly and effectively insulated with a layer of high density glass wool. The

ACQUAHOME 25 B - 25 BS

boiler's control logic incorporates

a total shutdown function to minimise energy consumption:

- In "Summer" mode ("Summer/Winter" selector turned to Summer position), the burner only starts up to restore the setpoint temperature of the water in the storage cylinder. In "Winter" mode ("Summer/Winter" selector turned to Winter position), the burner starts up either in response to a request for heat from the heating system (i.e. when the room thermostat switches the heating on) or to restore the setpoint temperature of the water in the storage cylinder (DHW heat requests are prioritised over central heating requests).

Safety devices

ACQUAHOME 25 B - 25 BS

boilers incorporate the following

safety and control devices:

A manual reset safety thermostat

that forces a safety shutdown if boiler temperature exceeds the safety threshold (100°C). The sensor used to monitor this temperature is located on the body of the heat exchanger;

Sensors

that measure the temperature of the boiler and

storage cylinder;

An electronic burner controller

that monitors the correct functioning of the selected burner program and sends a lockout signal to the control panel in the event of an error.

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.

Do not use the boiler if any of its safety devices are faulty.

Always check that the boiler is functioning correctly after repairs have been made.

ENGLISH

System layout

ACQUAHOME 25 B

Automatic bleed valve

Central heating circuit expansion vessel

Storage cylinder with insulation

Control panel

Sensor sockets

Capillary pressure gauge fitting

Distribution manifold

Flame inspection window

Boiler body

Boiler drain cock

Burner

Fuel oil filter

Storage cylinder drain cock

Storage cylinder safety valve

Non-return valve

Storage cylinder expansion vessel

Central heating circuit pump

Boiler circulator

Central heating circuit safety valve

Storage cylinder fill cock

Flue gas exhaust fitting

Flue gas box cover

Lifting bracket

Manual air vent valve

Storage cylinder sensor socket

Storage cylinder inspection flange

Storage cylinder flange insulation

ENGLISH

ACQUAHOME 25 BS

Automatic bleed valve

Central heating circuit expansion vessel

Storage cylinder with insulation

Control panel

Sensor sockets

Capillary pressure gauge fitting

Distribution manifold

Flame inspection window

Boiler body

Air intake obstructed

Boiler drain cock

Burner

Fuel oil filter

Storage cylinder drain cock

Storage cylinder safety valve

Non-return valve

Storage cylinder expansion vessel

Central heating circuit pump

Boiler circulator

Central heating circuit safety valve

Storage cylinder fill cock

Air intake fitting

Flue gas exhaust fitting

Flue gas box cover

Air box

Lifting bracket

Manual air vent valve

Storage cylinder sensor socket

Storage cylinder inspection flange

Storage cylinder flange insulation

ENGLISH

Control panel

ACQUAHOME 25 B - 25 BS

2 31

7 56 4

1 Function selector

Off

Burner reset

2 Electronic control unit

3 Boiler pressure gauge

Displays the pressure in the central heating circuit

4 Fuse holder

Holds the protective fuse 6.3 A-T

5 Indicator showing a burner lockout for a tripped safety thermostat (red)

Lights to show that the safety thermostat has tripped

6 Burner lockout indicator (red)

Lights to show that the burner locked out

7 Electrical power indicator (green)

Lights to show that the boiler is receiving electrical power

8 Manual reset for safety thermostat

Allows you to reset the boiler if the safety thermostat trips. Unscrew the protective cover to

access the reset button

ENGLISH

Electronic control unit

The electronic controller provides the interface by means of which the installer and user can set and change functioning parameters and view boiler status. The electronic controller lets you:

- Change the functioning mode;

- View the temperature of the boiler and storage cylinder;

- Change the boiler and storage cylinder parameters (password required);

- view alarms.

T3D P1 T4T1T2 S1 S2 P

S4 S5TR S6

T1 Storage cylinder parameter selection / setting key T2 Boiler parameter selection / setting key T3 Value increase button T4 Value decrease button S1 Storage cylinder temperature / setpoint indicator (yellow) S2 Boiler temperature / setpoint indicator (yellow) S3 Service/error indicator (red) S4 Stand-by mode indicator (green) S5 Summer mode indicator (green) S6 Winter mode indicator (green) TR Mode selection key D Three digit display P Parameter index point P1 “10,000 hours/starts” indicator points Right decimal point only: value = 10000 Central decimal point only: value = 20000 Central decimal point + right decimal point: value = 30000

≥ 900 ore ≤ 999 ore

≥ 9900 ore ≤ 9999 ore

≥ 19900 ore ≤ 19999 ore

≥ 29900 ore ≤ 29999 ore

≥ 39900 ore ≤ 39999 ore

ENGLISH

Navigation scheme

Displaying and changing storage cylinder settings

Displaying and changing boiler settings

Displaying hours remaining to the next service

ENGLISH

USE

Putting into service

Have the T Technical Assistance Service start up your

ACQUAHOME 25 B - 25 BS

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

- check that the central heating circuit pressure gauge shows a pressure over

1,5 bar

with the system cold.

Check also that the circuit is properly de-aerated

Start-up

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

- Turn the boiler’s mains power switch ON

- 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).;

- Open the control panel access door;

- Set boiler temperature to 75°C and storage cylinder temperature to 50°C as instructed in the relevant parts of the "Menu settings" section;

- Turn the function selector to "ON" and make sure that the green power indicator lights;

- Press the mode key to set the desired functioning mode (Summer or Winter);

The burner only starts up at the end of the fuel oil pre-heating phase.

The boiler now starts up and the burner remains lit until the temperature setpoint is reached.

ENGLISH

Ignition failure

If any ignition errors or malfunctions occur, the burner enters “LOCKOUT”. This is shown by the red button light on the burner and by the warning light on the control panel.

If a “LOCKOUT SHUTDOWN” occurs, wait about 30 seconds before resetting the burner.

Resetting the burner and safety thermostat

To restore normal startup conditions, open the cover of the control panel and turn the function selector to

"Reset burner" for at least 1 second before returning it to its original position. Wait for the burner to complete the entire ignition cycle again, up to the ignition of the flame.

If boiler temperature becomes too high, the manual reset safety thermostat trips.

If the safety thermostat trips (T>100°C), the warning light on the control panel comes on

Proceed as follows to reset the safety thermostat.

- Wait until boiler temperature falls below 80°C.

- Remove the safety thermostat cover.

- Press the manual reset button.

- Wait for the complete ignition cycle to be repeated and for the flame to ignite.

Eliminate the cause of the overheating before restarting the boiler. Contact T’s Technical Assistance Service.

ENGLISH

Menu settings

TEMPERATURE DISPLAY

Storage cylinder temperature display

Press the key to display storage cylinder temperature. The indicator in the key itself shows steady light. Temperature is expressed in degrees centigrade. The display can show values between 110°C and 10°C. The mode indicators show the current functioning mode and burner state. The display automatically returns to showing boiler temperature after 2 seconds.

Boiler temperature display

To view boiler temperature, press the key. The indicator in the key itself shows steady light. Temperature is expressed in degrees centigrade. The display can show values between 110°C and 10°C. The mode indicators show the current functioning mode and burner state.

If no key is pressed for two minutes, the system enters “low consumption” mode and the central section of the display flashes. Pressing any key restores the boiler temperature display.

CHANGING THE FUNCTIONING MODE

You can only change the boiler’s functioning mode when the display is reading out either boiler or storage cylinder temperature. Press the "mode key" repeatedly to scroll to the required functioning mode. The default setting is "Winter".

- In stand-by mode (with the indicator lit) the boiler remains off unless settings activate the anti-frost or antilegionella function (if enabled)

- In summer mode (with the indicator lit) the boiler responds only to requests for domestic hot water. The central heating system is switched off. This mode indicator is continuously lit if the burner is running and flashes if the burner is shut down.

- In winter mode (with the indicator lit) the boiler responds to heat requests from the domestic hot water and central heating systems. This mode indicator is continuously lit if the burner is running and flashes if the burner is shut down.

ENGLISH

DISPLAYING AND CHANGING BOILER

AND STORAGE CYLINDER SETPOINTS

Displaying and changing the boiler setpoint

Press the key to display boiler temperature.

If you press the or key while the boiler temperature is displayed, the indicator starts to flash and the boiler's current setpoint is shown on the three digit display. The default value is 75°C. Pressing the

or key once more changes the value.

Press the key to confirm the setpoint and return to the boiler temperature display. The indicator stops flashing.

Displaying and changing the storage cylinder setpoint

Press the key to display storage cylinder temperature.

If you press the or key while the storage cylinder temperature is displayed, the

indicator starts to flash and the storage cylinder's current setpoint is shown on the three digit display. The default value is 50°C. Pressing the

key once more changes the value.

Press the key to confirm the setpoint and return to the storage cylinder temperature display. The indicator stops flashing.

ENGLISH

Temporary shutdown

To switch the boiler off for short periods with outdoor temperature ABOVE ZERO:

- Open the control panel access door;

- Turn the function selector to

"ON";

- Press the electronic controller's "mode key" to select STAND-BY mode ( );

The boiler has a FROST PROTECTION FUNCTION that switches on the burner and the pumps if there is a risk of freezing.

Preparing for extended periods of disuse

If the boiler is not going to be used for an extended period of time, proceed as follows to prepare it for shut-down

- Open the control panel access door;

- Turn the main power switch to

"OFF" and make sure

that the green power indicator goes out;

- switch the boiler OFF at the mains power switch;

- Close the boiler’s fuel cock and water supply cock.

Drain the central heating circuit and domestic hot water circuit if there is any risk of freezing.

ENGLISH

Cleaning and servicing the boiler

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

SYSTEM ERRORS AND ALARMS

Alarm Description

AL1

This message on the three digit display indicates an active burner lockout alarm. The

indicator shows steady

light.

AL2

This message on the three digit display indicates an active safety temperature alarm (safety thermostat tripped). The

indicator shows steady light.

AL6

This message on the three digit display indicates a malfunction (short circuit) of the storage cylinder sensor. The

indicator shows steady light.If no storage cylinder sensor is detected, the storage cylinder is assumed to be disabled; for this reason not alarm is generated. If you try to view the value on the display, only “- - -” appears.

AL7

This alarm on the three digit display indicates a boiler sensor malfunction (sensor failure or short circuit).The indicator shows steady light.

SEr

Service threshold near warning

When the burner reaches 90% of the operating hours set in boiler parameter P7 (see Programming Parameters), the three figure display reads out the message “SEr” for about three seconds every time the burner starts (unless the display is in low consumption mode).

Service threshold passed warning

If the burner’s operating hours reach or exceed the value set in boiler parameter P7 (see Programming Parameters), the

indicator flashes to show that the burner requires service. The three figure display reads out the message “SEr” for about three seconds every time the burner starts (unless the display is in low consumption mode).

Displaying the hours left before service is needed

Press the and keys simultaneously to read out on the 3 figure display how many hours of operation are left before the service threshold is reached (max 999).

ENGLISH

Troubleshooting

FAULT CAUSE SOLUTION

There is a smell of fumes Fumes escaping into the air