The Bluehelix Tech RRT range conforms
fully to the new ErP regulations for
Ecodesign, legislation that promotes
improved energy efficiency and ensures
that the environmental impact of
energy products is kept to
a minimum.
> THE BLUEHELIX TECH RRT RANGE
EFFECTIVE AND ENERGY EFFICIENT
BLUEHELIX TECH RRT 24C >COMBI (14 l/min at ∆t 25°C)
BLUEHELIX TECH RRT 28C >COMBI (16 l/min at ∆t 25°C)
BLUEHELIX TECH RRT 34C >COMBI (19.5 l/min at ∆t 25°C)
BLUEHELIX TECH RRT 18S
BLUEHELIX TECH RRT 24S
BLUEHELIX TECH RRT 30S
Every boiler in the range
uses industry-leading
technology and the range
boasts one of the highest
energy efficiency
levels for heating (Class A).
Page 3
FPS
FPS
NOXNOX
EASY MAINTENANCE
EASY MAINTENANCE
M C
2
M C
2
> DURABLE AND RELIABLE
MLR
MLR
Our Thermobalance™ heat exchanger has better
insulation and wider waterways than standard
heating systems, helping to maintain higher efficiency
levels and reduce maintenance even on older systems.
The boilers conform to ErP regulations and have minimal
NOx emissions of <56mg/kWh (class 6). They’re designed for
use with solar systems. And they can reach one of the highest
seasonal efficiency levels in terms of heating.
THERMO
BALANCE
MULTI COMB.
CONTROL
ETAS 94%
EXCLUSIVE BUILT-IN
HEAT CELL BY FERROLI,
“THERMOBALANCE”
2
: MULTI COMBUSTION
MC
CONTROL. A NEW COMBUSTION
SYSTEM WITH PATENTED
GAS-ADAPTIVE TECHNOLOGY
APPLIANCE SPECIFICALLY DESIGNED
TO FACILITATE SIMPLE INSTALLATION
AND MAINTENANCE.
IT REACHES A SEASONAL
EFFICIENCY LEVEL TO HEAT A
ROOM THAT IS AMONG THE
HIGHEST OF ITS RANGE: ETA
94%
S
TM
COLLECTIVE
PRESSURE
APPLIANCES
FUNCTION
STOP AND GO
FPS: FLUE PROTECTION SYSTEM.
THE FLUE CHECK VALVE ALLOWS
FOR EASY CONNECTION TO COLLECTIVE
PRESSURE FLUE SYSTEMS
APPLIANCE THAT CAN BE USED
WITH PREHEATING SYSTEMS FOR
DOMESTIC HOT WATER
YOU CAN DELAY THE BOILER
SWITCH-ON BY ACTIVATING IT
ONLY IF DOMESTIC HOT WATER
IS ACTUALLY USED BY OPENING
A TAP OR SHOWER
CLASS 6
CLIMATIC
METHANE LPG
READY
MINIMAL POLLUTING EMISSIONS
(CLASS 6 ACCORDING TO EN
15502-1) ALREADY IN LINE WITH
THE ERP REGULATION SINCE
26.09.2018 (NOX EMISSIONS
< 56MG/KWH)
APPLIANCE THAT WORKS WITH
CLIMATIC ADJUSTMENT AT A SLIDING
SYSTEM TEMPERATURE (OPTIONAL
EXTERNAL TEMPERATURE PROBE)
MLR:METHANE LPG READY, VIA
A SIMPLE CONFIGURATION, THE
BOILER CAN OPERATE BOTH WITH
METHANE AND LPG WITHOUT USING
ADDITIONAL CONVERSION KITS
EASY
CONTROL
OPENTHERM
CONNECTION
DOMESTIC
MAXIMUM DOMESTIC
COMFORT CERTIFIED WITH
3 STARS (EN 13203)
3
Page 4
SIGNIFICANTLY
QUIETER
Noise is kept to an
absolute minimum
thanks to the clever
design of the Bluehelix
Tech RRT range. In fact,
you’ll barely know it’s
on even when it’s fully
operational, unless you
take a quick glance at
the boiler display.
STOP AND GO
FUNCTION
>STOP AND GO
When the boiler is fired up for short bursts of
time, it can eventually affect the lifespan of the
product. With the Bluehelix Tech RRT, the ignition
of the burner is delayed electronically – and only
activated if domestic hot water is actually used.
>SUN EASY
The range has been designed to integrate
into systems built using the latest technology.
Sun Easy uses electronics that simplify the
use of the boiler with solar panels, either with
natural or artificially created ventilation. Using a
sensor on the domestic circuit, the temperature
of water pre-heated by the solar panels remains
constant and the burner comes on only if the
temperature drops.
The casing itself has
three removable panels
that hide the isolation
valves – they’re easy
to remove and give it a
sleeker, better design.
DOMESTIC
>DOMESTIC ECO-COMFORT
In ECO mode, water is heated using traditional
methods, allowing a certain level of energy
efficiency. In COMFORT mode, the temperature
maintenance system on the heat exchanger
means that the hot water supply becomes faster
and more efficient. It will reach the highest
level of comfort (3 stars EN 13203) and the
efficiency and loading profiles comply with the
ErP regulation at the top of their range.
mod. 24 C - 28 C I A- XL 1 mod. 34 C IA- XXL
Page 5
>COMFORT AND SAFETY
EASYMAINTENANCE
EASYMAINTENANCE
With the Ferroli Bluehelix Tech RRT range, we’ve
designed a boiler that combines the best quality
system with a high level of energy efficiency and a
longer lifespan.
> EASY MAINTENANCE
>SAFE
The patented gas-adaptive technology of MC2 (Multi
Combustion Control) helps to ensure optimum combustion
if the air density, gas quality or pressure changes.
>NATURAL GAS LPG READY (MLR)
With a simple configuration, the boiler can operate with
either natural gas and LPG. No additional conversion kits
are needed.
>COST-EFFECTIVE
The range has been designed for easy installation and
maintenance. And because the appliances contain fewer
components (for example, it has a self-cooling burner
door with no insulation panel), the cost of replacing parts
that deteriorate is reduced.
>EASY TO CONTROL
The large backlit multi-functional graphic display helps you
set the controls quickly and easily.
> KEY ENERGY AND SAFETY FEATURES
MAXIMUM DOMESTIC COMFORT – CERTIFIED WITH
3
3 STARS (EN 13203)
Our clever design makes maintenance
easier. All the main components
are easily accessible and the
Thermobalance™ heat exchanger
allows servicing and repairs to be
carried out accurately and quickly.
>THE THREE PIECE CASING HAS
REMOVABLE SIDE PANELS FOR EASY
ACCESSIBILITY
>THE PRINTED CIRCUIT BOARD HOUSING
CAN EASILY BE REMOVED FROM THE
FRAME, GIVING FREE ACCESS TO
INTERNAL PARTS
>THE BASE-MOUNTED FAN DOESN’T
NEED REMOVING TO ACCESS THE
BURNER/EXCHANGER UNIT
>THERE’S NO INSULATION PANEL ON
THE BOILER DOOR SO THE RISK OF
DAMAGE OR BREAKAGE DURING
REMOVAL FOR MAINTENANCE AND
CLEANING IS MINIMISED
FACTORY BUILT BYPASS CIRCUIT – AN EXTERNAL
3
BYPASS SYSTEM IS STILL REQUIRED
FLUE PROTECTION SYSTEM (FPS) – THE FLUE CHECK
3
VALVE CAN EASILY BE CONNECTED TO COLLECTIVE
PRESSURE FLUE SYSTEMS
ECO FUNCTION – ACTIVATES THE BOILER ONLY WHEN
3
THE HOT WATER IS USED
OUTSIDE WEATHER ADJUSTMENT – IF AN OPTIONAL
3
FERROLI EXTERNAL SENSOR IS FITTED
LOW CONSUMPTION MODULATING PUMP – PRECISELY
3
MATCHES THE DEMAND FOR HEAT
DIGITAL FLAME CONTROL – IF NO FLAME IS DETECTED,
3
THE SYSTEM WILL AUTOMATICALLY ATTEMPT THREE IGNITIONS
(IF RUNNING ON NATURAL GAS)
SLEEKER DESIGN – THE ISOLATION VALVES ARE HIDDEN
3
BY THE BOILER DOOR PANELS.
>THE BURNER IS HELD IN PLACE WITH
FLANGE NUTS. IT’S EASY TO REMOVE,
LEAVING FREE ACCESS TO THE
STAINLESS STEEL EXCHANGER
>THE INCREASED FLOW HEAT
EXCHANGER IS DESIGNED TO
WITHSTAND VERY HARD WATER AND
THE MANIFOLD-FREE SINGLE PIPE
CIRCUIT MAKES IT EASY TO CLEAN
>THE PLATE EXCHANGER CAN BE
REMOVED BY TAKING OUT TWO
BOLTS THAT ARE ACCESSED
AT THE FRONT OF
THE UNIT.
5
Page 6
> TECH RRT
AN INSIDE VIEW
>EXCHANGER
SINGLE CIRCUIT STAINLESS STEEL EXCHANGER
WITH MULTIPLE PASSAGES. RESISTANT TO
CLOGGING AND EASY TO MAINTAIN.
>BURNER DOOR
SELF-COOLING – NO INSULATION PANEL.
>BURNER
SEMI-CIRCULAR STAINLESS STEEL BURNER
WITH DURABLE GASKET.
THERMO
BALANCE
>GAS ADAPTIVE
OUR SMART ‘GAS ADAPTIVE’ SYSTEM IS
THE SAME TYPE THAT’S USED ON HIGH
SPEC INDUSTRIAL UNITS. IT MONITORS
AND AUTOMATICALLY ADAPTS THE LEVEL
OF COMBUSTION AS THE GAS OR FLUE
CONDITIONS CHANGE.
>FAN
THE FAN AND FLUE CHECK VALVE ARE
MOUNTED AT THE BASE OF THE UNIT SO THAT
MAINTENANCE CAN EASILY BE CARRIED OUT
WITHOUT TAKING THE UNIT APART.
THE HEAT EXCHANGER
The innovative, intelligent design of the Thermobalance™
heat exchanger improves the efficiency and performance
of the Bluehelix Tech RRT range, making it easier to
service and maintain.
Page 7
fig. Afig. B
MULTI COMBUSTION CONTROL
Our smart ‘gas adaptive’ technology – MC2
(Multi Combustion Control) – is the same type that’s
used on high spec industrial units. It monitors and
automatically adapts the level of combustion as the
gas or flue conditions change.
HOW DOES IT WORK? – MC2 electronically controls the
relationship between the air/gas ratio and the flame
ionisation signal to cope with fluctuations or reduced
pressure with the inlet gas supply.
THE COMBUSTION CHAMBER
Made with AISI 304 stainless steel, the pipe that forms
the heat exchanger is extremely smooth. It’s less prone to
getting clogged or restricted with deposits, so the unit works
more efficiently and lasts longer.
EVOLVING AND
IMPROVING
The stainless steel
Thermobalance™ heat
exchanger has larger
waterways (fig.A) than
standard exchangers
(fig.B), making it far more
efficient. Even if there are
restrictions within the
system, the boiler will keep
operating at the top of its
efficiency range.
> SMOOTH SURFACE
REDUCES DEPOSITS AND
EXTENDS THE LIFE OF
THE HEAT EXCHANGER
> AIR-COOLED DOOR WITH NO
INSULATION PANEL. WITH FEWER
PARTS, THE UNIT IS EASIER AND
CHEAPER TO MAINTAIN.
> SEMI-CIRCULAR
STAINLESS STEEL BURNER
WITH DURABLE GASKET.
7
Page 8
>SETTING AND
EASY
CONTROL
5
7
986
42
3
111312
1
151410
KEY
1-2 DHW TEMPERATURE SETTING
DECREASE/INCREASE BUTTONS
3-4 HEATING SYSTEM TEMPERATURE
DECREASE/INCREASE BUTTONS
5 SUMMER MODE INDICATION
6 DISPLAY
7 ECO (ECONOMY) OR
COMFORT MODE
8 MULTIFUNCTION DISPLAY
(FLASHING DURING EXCHANGER
PROTECTION FUNCTION)
9 EXTERNAL SENSOR DETECTED
(WITH OPTIONAL EXTERNAL PROBE)
10 MODE SELECTION BUTTON “WINTER”,
“SUMMER”, “APPLIANCE OFF”, “ECO”,
“COMFORT”
11 HEATING DEMAND
12 BURNER LIT (FLASHING DURING
CALIBRATION FUNCTION AND
SELF-DIAGNOSIS PHASES)
CONTROLLING
THE SYSTEM
Any Ferroli OpenTherm remote control can be
connected to the Bluehelix Tech RRT range to
manage the level of comfort in the room as
required. Its simple and intuitive LCD display makes
it easy to programme both heating and hot water.
The Bluehelix Tech RRT boiler is designed to
accommodate a second thermostat if more than
one area needs to be controlled.
The PCB fuse and electrical connections are all
easily accessible.
OUTSIDE WEATHER ADJUSTMENT
Coupled with optional external weather sensor, the
Bluehelix Tech RRT automatically varies the system
temperature depending on the weather outside. It’s a built
in feature so doesn’t need a remote control to activate it; this
makes configuration easier if you need to replace the unit.
90
85
80
70
60
50
40
30
20
SYSTEM DELIVERY TEMPERATURE
20100-10-20
EXTERNAL TEMPERATURE
POWER MODULATION
As the required room temperature is reached, OpenTherm’s
modulating function eliminates uncomfortable heat peaks,
saving energy and improving comfort.
10987 6
5
4
3
2
1
13 APPEARS WHEN A FAULT HAS
OCCURRED CAUSING THE UNIT
TO SHUT DOWN. TO RESTORE
UNIT OPERATION, PRESS THE
RESET BUTTON (15)
14 DHW DEMAND
15 RESET BUTTON
22
20
18
AMBIENT TEMPERATURE °C
WITH REMOTE ROMEO TIMER
WITH NON-MODULATING AMBIENT THERMOSTAT
TIME
Page 9
> COLLECTIVE
FPS
FPS
PRESSURE APPLIANCES
Flue Protection System (FPS) – the
flue check valve (installed as standard)
allows for easy connection to collective
pressure flue systems, for example in
redevelopment projects. The collective
pressure flue solution is more costeffective for installers and where there
are smaller chimney diameters.
COLLECTIVE
PRESSURE
APPLIANCES
9
Page 10
>FLUES
A
K
L
O
P
N
M
A
D
B
F
C
E
B
F
I
C
B
A
A
B
A
D
A
Essential to the boiler’s operation
is the availability of fresh, clean
air and the ability to dispose
of combustion products. This is
achieved through the installation of
a flue which provides ducts to the
outside of the premises.
To optimise safety and performance,
Ferroli flues must always be used
with Ferroli boilers. Ferroli has a
comprehensive range of accessories
to suit complex installations and to
enable the extension of flue lengths.
The diagram above shows
typical flueing options.
Please contact Ferroli Sales for other 80/125 mm Ø flue options
and accessories not shown.
NOTE: For non standard flue lengths over 1m a fall of 3mm per metre per length
should be incorporated back to the boiler. Consult manufacturer’s installation
instructions for full guidance and options for flueing.
Page 11
> FLUE TERMINAL
POSITIONS
FLUE TER MINAL P OSITIONS
A
Directly below an opening, air brick, opening windows etc. 300
B
Above an opening, air brick, opening windows etc. 300
C
Horizontally to an opening, air brick, opening windows etc. 300
D
Below gutters, soil pipes or drain pipes 75
E
Below eaves 200
F
Below balconies or car port 200
G
From a vertical drain pipe or soil pipe 150
H
From an internal or external corner 100
I
Above ground roof or balcony level 300
J
From a surface facing the terminal 600
K
From a terminal facing the terminal 1200
L
From an opening in the car port (ie. door, window) into the dwelling1200
M
Vertically from a terminal on the same wall 1500
N
Horizontally from a terminal on the same wall 300
O
From the wall on which the terminal is mounted N/A
P
From a vertical structure on the roof 150
Q
Above intersection with roof 300
mm
NOTE: In addition, the terminal
must not be nearer than 300mm
to an opening in the building
fabric formed for the purpose of
accommodating a built-in element
such as a window frame.
Condensing terminal positions:
if the flue is to be terminated at
low level then the potential effect of
the plume must be considered.
The plume should not be directed:
– across a frequently used access route
– towards a window
– across a neighbouring property
For more information on terminal
positions please contact our
technical department.
The distance from a fanned draught
appliance terminal installed parallel to a
boundary may not be less than 300mm
in accordance with the diagram below.
Terminal
Assembly
300 min
P
P
Top View
Rear Flue
Property
Q
Q
N
N
M
M
I
I
F
F
L
L
G
B
B
A
A
G
I
I
D
C
C
D,E
E
H
Q
I
I
Q
J
K
J,K
H
H
H
Likely flue positions requiring
a flue terminal guard
Boundary Line
11
Page 12
HYDRAULICS
(COMBINATION BOILERS)
BLUEHELIX TECH RRT 24C/28C
KEY
8 DOMESTIC WATER OUTLET
9 DOMESTIC WATER INLET
10 SYSTEM FLOW
11 SYSTEM RETURN
14 SAFETY VALVE
32 CIRCULATING PUMP
34 HEATING TEMPERATURE SENSOR
36 AUTOMATIC AIR VENT
42 DOMESTIC HOT WATER
TEMPERATURE SENSOR
56 EXPANSION VESSEL
95 DIVERTER VALVE
114 LOW WATER PRESSURE SWITCH
136 FLOWMETER
186 RETURN SENSOR
193 CONDENSATE TRAP
194 DOMESTIC HOT WATER EXCHANGER
241 AUTOMATIC BOILER BYPASS
TOP VIEW
BLUEHELIX TECH RRT 34C
BOTTOM VIEW
TOP VIEW
BOTTOM VIEW
Page 13
BLUEHELIX TECH RRT 18S/24S
TOP VIEW
BLUEHELIX TECH RRT 30S
BOTTOM VIEW
KEY (COMBINATION BOILERS)
7 3/4" GAS INLET
8 1/2" DOMESTIC HOT WATER OUTLET
9 1/2" DOMESTIC HOT WATER INLET
10 3/4" SYSTEM FLOW
11 3/4" SYSTEM RETURN
A6 CONDENSE DISCHARGE CONNECTION
KEY (SYSTEM BOILERS)
7 3/4" GAS INLET
8 1/2" DOMESTIC HOT WATER OUTLET
9 1/2" DOMESTIC HOT WATER INLET
10 3/4" SYSTEM FLOW
11 3/4" SYSTEM RETURN
A6 CONDENSE DISCHARGE CONNECTION
TOP VIEW
BOTTOM VIEW
13
Page 14
>SPECIFICATIONS
BLUEH ELIX TEC H RRT24 C28 C34 C18 S24 S30 S
A
ERP class
XL
Max / min thermal input flow rate in heating mode (Hs)kW 20.4 / 524.5 / 530.6 / 6.1
Max / min thermal output power in heating mode (80/60°C) kW 20 / 4.924 / 4.930 / 6.318 / 4.924 / 4.930 / 6.3
Max / min thermal output power in heating mode (50/30°C) kW 21.7 / 5.426 / 5.432.5 / 6.919.5 / 5.426 / 5.432.5 / 6.9
Max domestic hot water thermal flow rate (Hi)kW 2528.534.7–––
Min domestic hot water thermal flow rate (Hi)kW 5.05.06.4–––
Max / min domestic thermal power kW 24.5 / 4.928 / 4.934.0 / 6.3–––
Max P output (80-60°C) (Hi) efficiency% 98 .19 8.19 7.99 8.198.197. 9
Min P output (80-60°C) (Hi) efficiency% 97. 897. 8989 7.89 7.898
Max P output (50-30°C) (Hi) efficiency% 106.110 6 .110 6 .110 6 .110 6 .110 6 .1
Min P output (50-30°C) (Hi) efficiency% 107. 5107.510 7. 5107.510 7.5107. 5
Whilst every effort is taken to ensure the
accuracy of the information contained
within the brochure, the details are offered
in good faith and Ferroli Ltd. accepts no
liability for matters arising as a result of
errors and/or omissions.
The information in this brochure was
correct at the time of printing, however
specifications and designs may be changed
owing to Ferroli’s policy of continuous
product research and development.
The technical specifications in the product
instruction manual supersedes and should
always be referred to during installation
and maintenance.
Reproduction of this publication, or
any part, is not permitted without the
written consent of Ferroli Ltd. Please
contact our Marketing Communications
via marketing@ferroli.co.uk for further
information. The statutory rights of the
consumer are not affected.
Ferroli Limited
Lichfield Road, Branston Industrial Estate
Burton on Trent, Staffordshire, DE14 3HD
Sales: 0330 205 0002 I sales@ferroli.co.uk Iwww.ferroli.co.uk
Designed and produced by GS2 Design Ltd. V1/04.19
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