thermital ACQUAHOME 25 B BLU User Manual
ACQUAHOME 25 B BLU
USER MANUAL
2
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.
3
ENGLISH
CONTENTS
The following symbols are used in this manual:
b
CAUTION! =
Identifies actions that require caution and
adequate preparation.
a
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
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ENGLISH
GENERAL INFORMATION
General Safety Information
b
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.
b
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.
b
The room where the boiler is installed must be properly
ventilated to ensure a sufficient supply of air for correct
combustion.
b
If you notice any water leaks, disconnect the boiler from
the mains electricity supply and shut off the water supply.
b
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.
b
The boiler must be serviced at least once a year. The
failure to perform annual maintenance work will void the
warranty of the equipment.
b
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.
b
If the boiler is not going to be used for an extended period of time, perform the operations described later in this
manual.
b
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:
a
Do not allow children or infirm persons to operate the
system unsupervised.
a
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
a
Do not touch the boiler while barefoot or wet.
a
Never pull, disconnect, or twist the electrical cables coming from the appliance even if it is disconnected from the
mains electricity supply.
a
Do not obstruct or restrict the vents in the room where
the boiler is installed. Adequate ventilation is essential for
correct combustion.
a
Do not expose the boiler to the elements. It is not designed for use outdoors.
a
It is prohibited to leave inflammable substances and containers in the room where the boiler is installed.
a
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.
a
It is forbidden to operate the boiler without water.
a
The equipment casing must not be removed by people
without specific qualification and expertise.
5
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.).
b
The intervention of a safety device indicates a potentially
dangerous malfunction in the system. Contact the manufacturer’s Technical Assistance Centre immediately.
b
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.
a
The appliance must not be put in service, even temporarily, when tampered safety devices are not in operation or
have been tampered with.
6
ENGLISH
System layout
ACQUAHOME 25 B BLU
7
1
2
8
9
11
10
13
12
20
21
22
23
6
14
16
17
18
19
5
4
3
15
1
Electric actuator
2
3-way diverting valve
3
Main switch
4
Heating safety valve
5
Storage cylinder expansion vessel
6
Control panel
7
Heating expansion reservoir
8
Burner
9
Boiler drain cock
10
Magnesium anode
11
Storage cylinder inspection flange
12
Storage cylinder flange insulation
13
Storage cylinder drain cock
14
Storage cylinder safety valve
15
Storage cylinder fill cock
16
Storage cylinder with insulation
17
Flame inspection window
18
Boiler body
19
Pump
20
Flue gas exhaust fitting
21
Flue gas box cover
22
Lifting bracket
23
Automatic bleed valve
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