Immergas MINI NIKE 24 4 ERP Instruction And Warning Book
Instruction and
*1.038450ENG*
warning book
IE
MINI NIKE
Installer
User
Maintenance Technician
24 4 ERP
Instantaneous wall-hung boilers
with open chamber (type B) and
natural draught
e European regulation 813/2013 provides that
this boiler can be installed only to replace similar
equipment connected to existing branched
multiple ues.
Dear Customer,
Our compliments for having chosen a top-quality Immergas product, able to assure well-being and safety for a long period of time. As an Immergas customer
you can also count on a qualied aer-sales service, prepared and updated to guarantee constant eciency of your boiler. Read the following pages carefully: you
will be able to draw useful suggestions regarding the correct use of the appliance, the respect of which, will conrm your satisfaction for the Immergas product.
For assistance and scheduled maintenance contact Authorised Aer-Sales centres: they have original spare parts and are specically trained directly by the
manufacturer.
General recommendations
All Immergas products are protected with suitable transport packaging.
e material must be stored in dry environments protected against bad weather.
e instruction book is an integral and essential part of the product and must be consigned to the new user also in the case of transfer or succession of ownership.
It must be stored with care and consulted carefully, as all of the warnings provide important safety indications for installation, use and maintenance stages.
is instruction manual provides technical information for installing the Immergas kit. As for the other issues related to boiler installation (e.g. safety in the
work site, environment protection, injury prevention), it is necessary to comply with the provisions specied in the current regulation and technical standards.
In compliance with legislation in force, the systems must be designed by qualied professionals, within the dimensional limits established by the Law. Installation
and maintenance must be performed in compliance with the regulations in force, according to the manufacturer’s instructions and by an authorised company,
which has specic technical expertise in the system sector, as required by Law.
Improper installation or assembly of the Immergas appliance and/or components, accessories, kit and devices can cause unexpected problems to people, animals
and objects. Read the instructions provided with the product carefully to ensure a proper installation.
Maintenance must be carried out by an authorised company. e Authorised Aer-sales Service represents a guarantee of qualication and professionalism.
e appliance must only be destined for the use for which it has been expressly declared. Any other use will be considered improper and therefore potentially
dangerous.
If errors occur during installation, operation and maintenance, due to non compliance with technical laws in force, standards or instructions contained in this
book (or however supplied by the manufacturer), the manufacturer is excluded from any contractual and extra-contractual liability for any damages and the
appliance warranty is invalidated.
e company IMMERGAS S.p.A., with registered oce in via Cisa Ligure 95 42041 Brescello (RE), declares that the design, manufacturing and aer-sales
assistance processes comply with the requirements of standard UNI EN ISO 9001:2008.
For further details on the product CE marking, request a copy of the Declaration of Conformity from the manufacturer, specifying the appliance model
and the language of the country.
e manufacturer declines all liability due to printing or transcription errors, reserving the right to make any modications to its technical and commercial
documents without forewarning.
INDICE
1 Boiler installation ...................................... 5
1.1 Installation recommendations. ................5
1.2 Main dimensions. ......................................5
1.3 Gas connection. ......................................... 6
1.4 Hydraulic connection. ..............................6
1.5 Electrical connection. ............................... 6
1.6 Remote controls and room
chronothermostats (optional). ................ 7
1.7 External probe (optional). ........................7
1.8 Ventilation of the rooms. .........................7
1.9 Evacuation of combustion products:
ue duct and branched multiple ues ... 8
1.10 Flue exhaust control device ......................8
1.11 System lling. ............................................. 8
1.12 Gas system start-up. ..................................8
1.13 Boiler start up (ignition). ...............................8
1.14 Circulation pump. .....................................9
1.15 Kits available on request. ........................ 10
1.16 Boiler components. .................................11
USER pag. INSTALLATOR pag.
2 Instructions for use and maintenance ..12
2.1 Cleaning and maintenance. ...................12
2.2 Ventilation of the rooms.........................12
2.3 General warnings. ................................... 12
2.4 Control panel. ..........................................12
2.5 Using the boiler........................................ 13
2.6 Troubleshooting. .....................................13
2.7 Boiler shutdown. .....................................14
2.8 Restore central heating system
pressure. .................................................... 14
2.9 System draining. ......................................14
2.10 Anti-freeze protection. ...........................14
2.11 Case cleaning. .......................................... 14
2.12 Decommissioning. ..................................14
MAINTENANCE TECHNICIAN pag.
3 Boiler start-up (initial check). ...............15
3.1 Hydraulic diagram. .................................15
3.2 Wiring diagram. ......................................16
3.3 Troubleshooting. .....................................16
3.4 Information menu. .................................. 17
3.5 Programming the p.C.B. ........................17
3.6 Converting the boiler to other types
of gas. ........................................................18
3.7 Checks following conversion to
another type of gas. .................................18
3.8 Possible adjustments. ..............................19
3.9 Automatic slow ignition function
with timed ramp delivery. ...................... 19
3.10 Chimney sweep” function. .....................19
3.11 Pump anti-block function. .....................19
3.12 ree-way anti-block function. .............19
3.13 Radiators anti-freeze function. ..............19
3.14 P.C.B. Periodical self-check. ................... 19
3.15 Solar panels coupling function. .............19
3.16 Casing removal. .......................................20
3.17 Yearly appliance check and
maintenance. ............................................22
3.18 Variable heat output. ...............................22
3.19 Combustion parameters. ........................23
3.20 Technical data. .........................................23
3.21 Data plate key. ...........................................24
3.22 Technical parameters for combination
boilers (in compliance with regulation
813/2013)..................................................25
3.23 Product che (in compliance with
regulation 811/2013). ..............................25
3.24 Parameters for lling in
the package che. ....................................26
BOILER
1
INSTALLATION
1.1 INSTALLATION RECOMMENDATIONS.
e Nike Mini Nike 24 4 ErP boiler has been
designed for wall mounted installation only; they
must be used to heat environments, to produce
domestic hot water and similar purposes.
e place of installation of the appliance and
relative Immergas accessories must have suitable
features (technical and structural) such to allow
(always in safety, efficiency and comfortable
conditions):
- installation (according to the provisions of the
technical legislation and technical regulations);
- maintenance operations (including scheduled,
periodic, routine and special maintenance);
- removal (to outdoors in the place for
loading and transporting the appliances
and components) as well as their eventual
replacement with appliances and/or equivalent
components.
e wall surface must be smooth, without any
protrusions or recesses enabling access to the
rear part. ey are NOT designed to be installed
on plinths or oors (Fig. 1-1).
Only professionally enabled companies are
authorised to install Immergas gas appliances.
Installation must be carried out according to the
standards, current legislation and in compliance
with local technical regulations and the required
technical procedures.
Attention: the manufacturer declines all liability
for damages caused by boilers removed from
other systems or for any non-conformities of
such equipment.
Before installing the appliance, ensure that it is
delivered in perfect condition; if in doubt, contact
the supplier immediately. Packing materials (staples, nails, plastic bags, polystyrene foam, etc.)
constitute a hazard and must be kept out of the
reach of children. If the appliance is installed inside or between cabinets, ensure sucient space
for normal servicing; therefore it is advisable to
leave clearance of at least 3 cm between the boiler
casing and the vertical sides of the cabinet. Leave
adequate space above the boiler for possible water
and ue removal connections. It is just as important that the intake grids are not obstructed.
Keep all ammable objects away from the appliance (paper, rags, plastic, polystyrene, etc.).
Do not place household appliances underneath
the boiler as they could be damaged if the safety
valve intervenes with an obstructed conveying
system (the safety valve must be conveyed away
by a draining funnel), or if there are leaks from
the hydraulic connections; on the contrary, the
manufacturer cannot be held responsible for
any damage caused to the household appliances.
For the aforementioned reasons, we recommend
not placing furnishings, furniture, etc. under
the boiler.
In the event of malfunctions, faults or incorrect
operation, turn the appliance o immediately
and contact a qualied technician (e.g. the Immergas After-Sales Assistance centre, which
has specically trained sta and original spare
parts). Do not attempt to modify or repair the
appliance alone. Failure to comply with the above
implies personal responsibility and invalidates
the warranty.
• Installation regulations:
- installation of these boilers in bedrooms,
studio ats and bathrooms, or in premises
where there are wood red heaters (or solid
fuel heaters in general) and in premises next
to or connected to them, is subject to the
regulatory/legislative provisions in force in
the country.
- installation in places with a fire risk is
prohibited (for example: underground car
parks, garages), potentially dangerous places,
gas appliances and relative ue ducts.
1.2 MAIN DIMENSIONS.
- installation is prohibited on the vertical
projection of cooking hobs;
- installation is forbidden in places/rooms
that constitute public areas of apartment
buildings, internal stairways or other
escape routes (e.g. landings, entrance halls,
etc.) unless otherwise provided by local
regulations;
- installation is also forbidden in places/rooms
that constitute public areas of apartment
buildings such as cellars, entrance halls, attics,
los, etc., unless otherwise provided for by
local regulations in force;
- Type B open chamber boilers must not be
installed in places where commercial, artisan
or industrial activities take place, which use
products that may develop volatile vapours
or substances (e.g. acid vapours, glues, paints,
solvents, combustibles, etc.), as well as dusts
(e.g. dust deriving from the working of wood,
coal nes, cement, etc.), which may be damaging for the components of the appliance
and jeopardise functioning.
- Furthermore, they must be installed in rooms
where the temperature cannot fall below 0°C
and must not be exposed to weathering.
- is natural draught boiler can be connected
only to a multiple branched ue served by
INSTALLATORUSER
MAINTENANCE TECHNICIAN
YES
NO
1-1
Key:
G - Gas supply
AC - Domestic hot water outlet
ACV - Solar valve kit DHW inlet
(Optional)
AF - Domestic cold water inlet
R - System return
M - System ow
V - Electrical connection
N.B.: connection group (optional)
5
Height
(mm)
785 440 240
GAS
G AC AF R M
3/4” 1/2” 1/2” 3/4” 3/4”
Width
(mm)
CONNECTIONS
DOMESTIC
HOT WATER
Depth
(mm)
SYSTEM
1-2
a variety of users in existing buildings. e
boiler takes the combustion air directly from
the installation room and is equipped with
draught-breaker/anti-wind device. Due to
lower eciency, any other use of this boiler
must be avoided as it would lead to greater
consumption and higher operating costs.
Important: Wall mounting of the boiler must
guarantee stable and ecient support for the
generator.
e plugs (standard supply) are to be used only in
conjunction with the mounting brackets or xing
template to x the appliance to the wall; they only
INSTALLATORUSER
ensure adequate support if inserted correctly (according to technical standards) in walls made of
solid or semi-hollow brick or block. In the case of
walls made from hollow brick or block, partitions
with limited static properties, or in any case walls
other than those indicated, a static test must be
carried out to ensure adequate support.
N.B.: the hex head screws supplied in the blister
pack are to be used exclusively to x the relative
mounting bracket to the wall.
ese boilers are used to heat water to below
boiling temperature in atmospheric pressure.
ey must be connected to a central heating
system and hot water circuit suited to their
performance and capacity.
1.3 GAS CONNECTION.
Our boilers are designed to operate with methane
gas (G20) and LPG. Supply pipes must be the
same as or larger than the 3/4”G boiler tting.
Before connecting the gas line, carefully clean
inside all the fuel feed system pipes to remove any
residue that could impair boiler eciency. Also
make sure the gas corresponds to that for which
the boiler is prepared (see boiler data-plate). If
dierent, the appliance must be converted for operation with the other type of gas (see converting
appliance for other gas types). e dynamic gas
supply (methane or LPG) pressure must also be
checked according to the type used in the boiler,
which must comply with the regulations in force,
as insucient levels can reduce generator output
and cause malfunctions.
Ensure correct gas cock connection by following the mounting instructions illustrated in
the gure. e gas supply pipe must be suitably
dimensioned according to current regulations in
order to guarantee correct gas ow to the burner
even in conditions of maximum generator output
and to guarantee appliance eciency (technical
MAINTENANCE TECHNICIAN
specications). e coupling system must conform to standards.
Fuel gas quality. e appliance has been designed to operate with gas free of impurities; otherwise it is advisable to t special lters upstream
from the appliance to restore the purity of the gas.
Storage tanks (in case of supply from LPG
depot).
- New LPG storage tanks may contain residual
inert gases (nitrogen) that degrade the mixture
delivered to the appliance casing functioning
anomalies.
- Due to the composition of the LPG mixture,
layering of the mixture components may occur
during the period of storage in the tanks. is
can cause a variation in the heating power of
the mixture delivered to the appliance, with
subsequent change in its performance.
1.4 HYDRAULIC CONNECTION.
Important: In order not to void the warranty
before making the boiler connections, carefully
clean the heating system on the primary heat
exchanger (pipes, radiators, etc.) with special
pickling or de-scaling products to remove any
deposits that could compromise correct boiler
operation.
Treatment of the water of the heating and water
system is required, in compliance with the
technical standards in force, in order to protect
the system and the appliance from deposits (e.g.
limescale), slurry or other hazardous deposits.
Hydraulic connections must be made in a
rational way using the couplings on the boiler
template. e boiler safety valve outlet must be
connected to an appropriate drain. Otherwise,
the manufacturer declines any responsibility in
case of ooding if the drain valve cuts in.
Attention: the manufacturer declines all liability
in the event of damage caused by the installation
of an automatic lling system that is not its own
brand.
In order to meet the system requirements
established by the regulations in terms of
pollution of drinking water, we recommend
installing the IMMERGAS anti-backow kit to be
used upstream of the cold water inlet connection
of the boiler. It is also recommended that the heat
transfer uid (e.g. water + glycol) entered in the
primary circuit of the boiler (heating circuit),
complies with the local regulations in force.
Important: to preserve the duration of appliance
eciency features, in the presence of water whose
features can lead to the deposit of lime scale,
installation of the “polyphosphate dispenser” kit
is recommended.
1.5 ELECTRICAL CONNECTION.
e Mini Nike 24 4 ErP boiler has an IPX4D
protection rating for the entire appliance. Electrical safety of the unit is reached when it is correctly connected to an ecient earthing system
as specied by current safety standards.
Important: the manufacturer declines any
responsibility for damage or physical injury
caused by failure to connect the boiler to an efcient earth system or failure to comply with the
reference standards.
Also ensure that the electrical installation
corresponds to maximum absorbed power
specications as shown on the boiler data-plate.
Boilers are supplied complete with an “X” type
power cable without plug. e power supply
cable must be connected to a 230V ±10% /
50Hz mains supply respecting L-N polarity and
earth connection . is network must also
have an omnipolar circuit breaker with class III
over-voltage category. When replacing the power
supply cable, contact a qualied company (e.g.
the the Authorised Aer-Sales Technical Assistance Service). e power cable must be laid as
shown. In the event of mains fuse replacement
on the P.C.B., use a 2A quick-blow fuse. For the
main power supply to the appliance, never use
adapters, multiple sockets or extension leads.
6
1.6 REMOTE CONTROLS AND
ROOM CHRONOTHERMOSTATS
OPTIONAL.
e boiler is prepared for the application of room
chronothermostats or remote controls, which are
available as optional kits. (Fig. 1-3)
All Immergas chronothermostats can be connected with 2 wires only. Carefully read the
user and assembly instructions contained in the
accessory kit.
• On/O digital chronothermostat. e chrono-
thermostat allows:
- to set two room temperature values: one for
day (comfort temperature) and one for night
(lower temperature);
- set a weekly programme with four daily
switch on and switch o times;
- selecting the required function mode from
the various possible alternatives:
- manual operation (with adjustable temperature).
- automatic operation (with set programme).
- forced automatic operation (momentarily
changing the temperature of the automatic
programme).
e chronothermostat is powered by two 1.5V
LR 6 type alkaline batteries.
• Comando Amico Remoto Remote Control De-
viceV2 (CARV2) with climate chronothermostat
function. In addition to the functions described
in the previous point, the CAR panelV2 enables
the user to control all the important information regarding operation of the appliance and
the heating system with the opportunity of easily intervening on the previously set parameters
without having to go to the place where the appliance is installed. e panel is provided with
self-diagnosis to display any boiler functioning
anomalies. e climate chronothermostat incorporated into the remote panel enables the
system ow temperature to be adjusted to the
actual needs of the room being heated, in order
to obtain the desired room temperature with
extreme precision and therefore with evident
saving in running costs. e chronothermostat
is fed directly by the boiler by means of the
same 2 wires used for the transmission of data
between boiler and chronothermostat.
Important: If the system is subdivided into zones
using the relevant kit. the CARV2 must be used
with its climate thermostat function disabled, i.e.
it must be set to On/O mode.
Comando Amico Remoto remote controlV2
or On/O chronothermostat electrical connections (Optional). e operations described
below must be performed aer having removed
the voltage from the appliance. Any thermostat
or On/O environment chronothermostat must
be connected to clamps 40 and 41 eliminating
jumper X40 (Fig. 3-2). Make sure that the On/
O thermostat contact is of the “clean” type, i.e.
independent of the mains supply, otherwise the
electronic adjustment card would be damaged.
Any Comando Amico Remoto remote controlV2
must be connected to clamps 40 and 41 eliminating jumper X40 on the circuit board, paying
attention not to invert the connections (Fig. 3-2).
Important: if the Comando Amico Remoto
remote control
thermostat is used arrange two separate lines in
compliance with current regulations regarding
electrical systems. No boiler pipes must ever be
used to earth the electric system or telephone
lines. Ensure elimination of this risk before making the boiler electrical connections.
V2
or any other On/O chrono-
1.7 EXTERNAL PROBE OPTIONAL.
e boiler is prepared for the application of the
external probe (Fig. 1-4), which is available as
an optional kit.
e probe can be connected directly to the boiler
electrical system and allows the max. system
ow temperature to be automatically decreased
when the external temperature increases, in
order to adjust the heat supplied to the system
according to the change in external temperature.
e external probe always acts when connected
independently from the presence or type of room
thermostat used. e correlation between system
ow temperature and external temperature is determined by the position of the selector switch on
the boiler control panel according to the curves
shown in the diagram (Fig. 1-5). e electric connection of the external probe must be made on
clamps 38 and 39 on the boiler P.C.B. (Fig. 3-2).
1.8 VENTILATION OF THE ROOMS.
In the room in which the boiler is installed it is
necessary that at least as much air ows as that
requested for by normal combustion of the gas
and ventilation of the room. Natural air ow must
take place directly through:
- permanent openings in the walls of the room
to ventilate that lead towards the outside;
- condotti di ventilazione, singoli oppure collettivi ramicati.
e air used for ventilation must be withdrawn
directly from outside, in an area away from sources of pollution. Natural air ow is also allowed
indirectly by air intake from adjoining rooms. For
further information relative to ventilation of the
rooms follow that envisioned in the regulation.
Evacuation of foul air. In the rooms where the
gas appliances are installed it may also be necessary, as well as the intake of combustion agent air,
to evacuate foul air, with consequent intake of a
further equal amount of clean air. is must be
realised respecting the provisions of the technical
regulations in force.
INSTALLATORUSER
31
45
58
1-3
1-4
MAINTENANCE TECHNICIAN
Position of the central
heating temperature user adjustment
1-5
7
1.9 EVACUATION OF COMBUSTION PRODUCTS: FLUE DUCT AND BRANCHED MULTIPLE FLUES
e European regulation 813/2013 provides that
this boiler can be installed only to replace similar equipment connected to existing branched
multiple ues.
Connection to branched multiple ues.
Fitting the appliances to a branched multiple ues
takes place by means of ue ducts.
In the event of ttings with pre-existing ues,
these must be in safe and ecient status and perfectly clean because the detachment of any waste
INSTALLATORUSER
from the walls during functioning, could block
the passage of ue gases, thus causing extremely
dangerous situations for the user.
e ue ducts must be connected to the chimney
or ue in the same room in which the appliance
is installed or, at most, in the adjoining room and
must comply with the requirements indicated by
the current technical regulations.
1.10 FLUE EXHAUST CONTROL DEVICE
Important: it is prohibited to put the fumes
exhaust control device out of order voluntarily.
Every piece of this device must be replaced using
original spare parts if they have deteriorated. In
the case of repeated interventions of the fumes
exhaust control device, check the fumes exhaust
ue and the ventilation of the room in which the
boiler is located.
1.11 SYSTEM FILLING.
Once the boiler is connected, ll the system via
the lling valve (Fig. 2-2). Filling is performed
at low speed to ensure release of air bubbles in
the water via the boiler and heating system vents.
e boiler has a built-in automatic venting valve
on the circulator. Open the radiator vent valves.
Close radiator vent valves only when water escapes from them.
Close the lling valve when the boiler manometer
indicates approx. 1.2 bar.
N.B.: during these operations start up the circulation pump at intervals, acting on the main
switch positioned on the control panel. Vent the
circulation pump by loosening the front cap and
keeping the motor running.
Tighten the cap aer the operation.
1.12 GAS SYSTEM STARTUP.
To start up the system, make reference to the
Standard.
In particular, for new gas systems:
- open windows and doors;
- avoid presence of sparks or naked ames;
- bleed all air from pipelines;
- check that the internal system is properly sealed
according to the specications set forth by
technical regulations in force.
1.13 BOILER START UP IGNITION.
To commission the boiler (the operations listed
below must only be performed by a qualied rm
and without any unauthorised persons):
- check that the internal system is properly sealed
according to the specications set forth by
technical regulations in force;
- make sure that the type of gas used corresponds
to boiler settings;
- check that there are no external factors that
may cause the formation of fuel pockets;
- switch the boiler on and check correct ignition;
- make sure that the gas ow rate and relevant
pressure values comply with those given in the
manual (par. 3.18);
- check the correct ventilation of the rooms;
- check the existing draught during normal
functioning of the appliance, e.g. a draught
gauge positioned at the exit of the appliance
combustion products;
- check that there is no backow of combustion
products into the room, even during functioning of fans;
- ensure that the safety device is engaged in the
event of gas supply failure and check activation
time;
- check activation of the main switch located
upstream from the boiler.
e boiler must not be started up even if only
one of the checks should be negative.
MAINTENANCE TECHNICIAN
8
1.14 CIRCULATION PUMP.
e boiler is supplied with circulator tted with
speed regulator.
ese settings are suitable for most systems.
In fact, the pump is equipped with electronic
control to set advanced functions. For proper operation one must select the most suitable type of
operation for the system and select a speed in the
available range, with a focus on energy savings.
By-pass Regulation (part. 20 Fig. 1-9). e
boiler is supplied with by-pass closed by 1.5 turns
with respect to all open.
If necessary, the by-pass can be regulated to
system requirements from minimum (by-pass
closed) to maximum (by-pass open). Adjust
using a at head screwdriver, turn clockwise to
close the by-pass; turn anti-clockwise to open it.
Display of operation status. During normal
operation the status LED (2) is on green, the four
yellow LEDs (3) indicate circulator absorption
according to the following table:
Circulating pump LED Absorption
G Y Y Y Y
0 ÷ 25 %
On On O O O
G Y Y Y Y
25 ÷ 50 %
On On On O O
G Y Y Y Y
50 ÷ 75 %
On On On On O
G Y Y Y Y
75 ÷ 100 %
On On On On On
Selection of operating mode. To see the current
operation mode it is sucient to press button
(1) once.
To change operation mode press the button
for between 2 to 10 seconds until the current
conguration ashing, each time the button is
pressed all possible functions are scrolled cyclically. Aer a few seconds without doing any
operation the circulator memorises the selected
mode and goes back to operation display.
Attention: e circulator has various built-in
operation modes, however the constant curve
operation mode must be selected according to
the following table.
Circulating pump LED Description
G Y Y Y Y
On On On O O
G Y Y Y Y
On On On On O
G Y Y Y Y
On On On On On
G Y Y Y Y
On On On O On
Constant curve: the circulator operates maintaining constant speed.
Selection button lock. e button has a feature
that locks its operation to prevent accidental
modications, to lock the control panel it is
necessary to press button (1) longer than 10
seconds (during which the current conguration
ashes), the active lock is signalled by all LEDs of
the control panel ashing. To unlock the button
press again longer than 10 seconds.
Real time diagnostics: in the event of malfunction the LEDs provide information on the
circulator operation status, see table (Fig. 1-7):
Do not use
Constant curve
speed 2
Constant curve
speed 3 (default)
Constant curve
speed 4
INSTALLATORUSER
1-7
Circulating pump LED
(rst red LED)
R Y Y Y Y
On O O O On
R Y Y Y Y
On O O On O
R Y Y Y Y
On O On O O
Description Diagnostics Remedy
Circulator pump blocked
Abnormal situation (the circulator
continues operating).
low power supply voltage
Electrical fault
(Circulator pump blocked)
Key:
1 - Function selection button
2 - Green (G) / red (R) LED
3 - 4 yellow LEDs (Y)
Wait for the circulator to make auto-
The circulator pump cannot restart
automatically due to an anomaly
Voltage o range Check power supply
e circulator is locked due to power
supply too low or serious malfunction
matic release attempts or manually
release the motor sha acting on the
screw in the centre of the head.
If the anomaly persists replace the
circulator.
Check the power supply, if the anomaly
persists replace the circulator
1-6
MAINTENANCE TECHNICIAN
9
Total head available to the system.
INSTALLATORUSER
Open bypass
Head (kPa)
Closed bypass
A1
A2
Flow rate (l/h)
V1
A3
V2
A3
V3
1-8
Key:
V1 = Total head available to the system with
pump at speed 2
Circulator pump absorbed power (W)
V2 = Total head available to the system with
pump at speed 3
V3 = Total head available to the system with
pump at speed 4
A1 = Power absorbed by the pump at speed 2
A2 = Power absorbed by the pump at speed 3
A3 = Power absorbed by the pump at speed 4
Head (kPa)
A1
1.15 KITS AVAILABLE ON REQUEST.
• System shut o valves kit. e boiler is designed
for installation of system interception cocks
to be placed on ow and return pipes of the
connection assembly. is kit is particularly
useful for maintenance as it allows the boiler to
be drained separately without having to empty
MAINTENANCE TECHNICIAN
the entire system.
A2
V2
V1
Flow rate (l/h)
• Polyphosphate dispenser kit. e polyphosphate dispenser reduces the formation of lime-scale
and preserves the original heat exchange and
domestic hot water production conditions.
e boiler is prepared for application of the
polyphosphate dispenser kit.
e above-mentioned kits are supplied complete
with instructions for assembly and use.
V3
Circulator pump absorbed power (W)
10
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