Page 1
UK WATER
REGULATION 4
7
YEAR
WARRANTY
Bluehelix HiTech RRT
Wall hung condensing boilers with instantaneous domestic hot water production
Page 2
BLUEHELIX HITECH RRT...
HITECH IN EVERY SENSE
The smart new user interface with ‘CapSense’ touch screen
technology and large 2.8” graphic display allows for easy
navigation and simple boiler control.
BLUEHELIX HITECH RRT
24 C / 28 C / 34 C
The seasonal space heating energy efficiency rating (η
94%) is one of the highest in this category (Class A ErP, scale
from G to A++). The BLUEHELIX HITECH RRT can easily
adapt to the load conditions thanks to the broad modulating
range, reaching ratios of up to 1:10 (34 C), 1:9 (28 C) and
1:7 (24 C).
The innovative hydrogen plug-in system means the
BLUEHELIX HITECH RRT is capable of self-adjusting to
operate with natural gas and hydrogen mixtures, allowing
users to be prepared for the future of environmentally-friendly
hydrogen-powered heating.
Designed to meet the criteria of a robust product in every
respect, the high-pass primary heat exchanger guarantees
maximum efficiency and long-lasting reliability.
s
THE RANGE
Models operating with both natural gas and LPG
24 C
C
7 year warranty as standard
7
YEAR
WARRANTY
*Warranty terms and conditions can be downloaded at https://www.installersmate.com/wp-content/uploads/2019/05/Ferroli-UK-Warranty-TCs.pdf
The Bluehelix HiTech RRT comes with a valuable 7 year manufacturer’s parts and labour warranty, provided it is fitted
with a high performance magnetic filter and is serviced annually.*
DHW FLOW RATE
(14 l/min at ∆t 25°C)
28 C
DHW FLOW RATE
(16.1 l/min at ∆t 25°C)
34 C
DHW FLOW RATE
(19 l/min at ∆t 25°C)
Page 3
AS SILENT AS CAN BE
For maximum comfort at home
BLUEHELIX HITECH RRT
24 C / 28 C / 34 C
The meticulous design of the BLUEHELIX HITECH RRT has achieved significant values
in terms of silence and acoustic comfort, making it almost impossible to distinguish
the noise of the boiler during normal operation from the background noise of a home.
The on/off transistors have also been optimised to operate so quietly that it is
hard to tell from the sound level whether the boiler is on or off.
It’s also aesthetically pleasing, with a new user-friendly 3-piece removable casing
that extends to cover the pipe connections.
Page 4
BLUEHELIX HITECH RRT
Component view
BLUEHELIX HITECH RRT
24 C / 28 C / 34 C
EXCHANGER
Stainless steel high-pass singlecircuit exchanger, clog-resistant
and easy to clean
BURNER
Unique stainless steel semispherical
burner with long-life gasket
BURNER DOOR
Self-cooling burner door without
insulating panel
GAS ADAPTIVE
Intelligent gas adaptive system
derived from industrial boilers
which monitors and self-stabilises
combustion, based on gas + flue
gas conditions
FAN
Offset fan to allow access to the
combustion chamber of the heat
exchanger without having to remove
the fan assembly, facilitated by the
built-in ue gas backow valve
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CHARACTERISTICS
F
P
S
F
P
S
M C
2
M C
2
1 : 101 : 10
M
G
R
M
G
R
Product benefits
BLUEHELIX HITECH RRT
24 C / 28 C / 34 C
> High thickness stainless steel primary heat exchanger
with large passes to guarantee long life, reduced
maintenance and high efficiency, even on existing heating
systems
> Class 6 NOx: compliant with the latest ErP directive of
26.08.2019 (NOx emissions < 56mg/kWh)
2
> MC
: Multi Combustion Control, a new combustion system
with industrial-derived gas adaptive patented technology
that automatically adapts the level of combustion as the flue
or gas conditions change
> MGR: Multi Gas Ready. With a simple configuration the
boiler can run on natural gas or LPG without using additional
conversion kits
> Unique exchanger-burner system with self-cooling door.
Less consumable parts simplifies maintenance and lowers
costs
> Instantaneous production of domestic hot water with a
dedicated DHW plate exchanger
> Hydraulic ttings covered by the boiler casing
> Large multi-purpose backlit graphic display allows for
parameters to be set easily and correctly
> Boiler bypass only (would still need system bypass if
required by building regulations)
> The boiler easily adapts to the load conditions thanks to the
broad modulating range which can reach ratios of up to
1:10 (34 C), 1:9 (28 C) and 1:7 (24 C)
> FPS: Flue Gas Protection System. The flue gas check
valve offers easy connection to pressurised collective flue
systems, in accordance with regulation UNI 7129
> Designed to simplify routine servicing and maintenance
procedures
> Solar system set-up allows for the production of domestic
hot water using solar panel systems
> ECO function in DHW mode for more savings when only
short bursts of hot water are being used
> Digital ame control with three ignition attempts if
operation is blocked due to failed flame detection (only in
natural gas mode)
KEY FEATURES
THERMO
BALANCE
COLLECTIVE
PRESSURISED
MODE
Unique
integrated Ferroli
Thermobalance
thermal unit
FPS: Flue Gas Protection
System. The flue gas
check valve can be easily
connected to approved
pressurised collective
flue systems (e.g. in
redevelopment projects)
The appliance can
be combined with
preheating systems
for domestic hot water
TM
MULTI COMB.
CONTROL
CLIMATIC
Compatible with natural
gas mixtures enriched
with hydrogen*
(not operational in the UK
at time of going to print)
(* mixtures of natural gas/hydrogen
80%/20% currently available in Europe)
MC2: Multi Combustion
Control, a new combustion
system with patented gas
adaptive technology
Appliance capable of
operating with climatic
control and sliding system
temperature (optional
outdoor temperature probe)
STOP AND GO
Burner ignition can be
delayed by starting up
only when domestic hot
water is actually drawn
Stainless steel highperformance mono-thermal
primary heat exchanger
Designed specifically
to offer particularly
simple installation and
maintenance
RANGE
NATURAL GAS
& LPG
ETA
94%
s
Modulating ratio between
Pmax and Pmin
MGR: Multi Gas Ready.
With a simple configuration
the boiler can run on natural
gas or LPG without using
additional conversion kits
Reaches one of the
highest seasonal space
heating efficiencies in its
category (η
94%)
s
Page 6
BOILER CONTROL
Control board and functions
BLUEHELIX HITECH RRT
24 C / 28 C / 34 C
easy
EASY...
It’s quick and easy to achieve optimum comfort thanks
to the smart new user interface with ‘CapSense’ touch
screen technology and large 2.8” graphic display.
The boiler is also designed to deliver even greater
comfort by connecting to a second room thermostat
for multi-zone heating control.
EASY
CONTROL
5
12
8
14
14
7
10
9
13
11
24
13 6
KEY 1 Decrease DHW temperature setting 2 Increase DHW temperature setting 3 Decrease heating system temperature setting 4 Increase heating
system temperature setting 5 Display 6 Back key 7 Winter, Summer, Appliance OFF, ECO, COMFORT mode selection 8 ECO mode indicator 9 DHW mode
indicator 10 Summer/Winter mode indicator 11 Menu / confirm key 12 System pressure indicator 13 Heating mode indicator 14 Burner on indicator
Page 7
BLUEHELIX HITECH RRT
24 C / 28 C / 34 C
HEAT ENGINE
Combustion chamber
The stainless steel water section of the heat exchanger in the BLUEHELIX HITECH RRT ensures an extremely smooth surface that
significantly reduces the problem of scaling and deposits.
The increased extra section,
smooth surface and coil
section drastically reduce
the amount of deposits inside
the pipe and considerably
increase the service life of
the heat exchanger
Air-cooled burner door requiring
no insulation panel (will not break
during maintenance)
Unique hemispherical
stainless steel burner
DESIGNED FOR OPTIMUM EFFICIENCY
The patented stainless steel heat exchanger of the THERMOBALANCE™ thermal unit used
in the BLUEHELIX HITECH RRT (fig. A) can be compared to the most traditional and widely
fig. A *
fig. B *
used steel heat exchanger (fig. B).
This design enables the heat exchanger to work at maximum efficiency, even in partially
clogged conditions. With the same amount of deposits and sediment (e.g. due to
installation on old systems), the heat exchanger in fig. B tends to get clogged more
quickly in the part in contact with the flame as a result of the reduced fluid flow area,
where a barrier of deposits* forms, obstructing the heat exchanger and reducing the
efficiency to below nominal values.
DURABLE AND RELIABLE
Ferroli’s 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.
* Ref.: same amount (5 gr.) of scaling and deposits in heat exchanger (A) and (B), with the same pipe length section. Scale 150% of the
actual measurement.
Heat exchange section showing immediate heat contact surface area
Page 8
M C
2
M C
2
BLUEHELIX HITECH RRT
24 C / 28 C / 34 C
MC
2
Multi Combustion Control
MC2: Multi Combustion Control is a new combustion system with gas adaptive patented technology that
automatically adapts the level of combustion as the flue or gas conditions change. This is controlled by the
flame ionisation current to ensure perfect combustion according to the change in air density or gas quality.
The ratio between the air/gas flow (λ) and the flame ionisation detection electrode is used to automatically
adjust the air-gas ratio and, therefore, combustion.
MULTI COMB.
CONTROL
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EASY MAINTENANCE
BLUEHELIX HITECH RRT
24 C / 28 C / 34 C
When servicing the boiler for the first time, engineers will appreciate the care with which each part has been
designed in order to make their work straightforward and hassle-free.
- All main components can be easily accessed by removing the 3-piece casing.
- The electric box of the electronic board can be easily removed from the chassis, giving free access to the
internal parts.
- The fan offset from the burner is situated underneath and removal is not necessary in order to access the burner and
heat exchanger assembly.
- The burner door is fully air-cooled and does not require an insulating panel, which avoids the risk of it being damaged
during cleaning.
- The burner is removed by unscrewing only three bolts, giving free access to the stainless steel heat exchanger.
- The high-pass primary heat exchanger is designed to challenge extremely hard water conditions and can be easily cleaned
thanks to the non-manifold single pipe circuit.
- The DHW inlet lter can be removed directly from the inside without having to remove the boiler water connections.
- Disassembly and replacement of the plate heat exchanger is carried out easily by removing two hex bolts that can be accessed
from the front.
- Easy access to the external wiring connections without having to lower the front panel.
Page 10
F
P
S
F
P
S
BLUEHELIX HITECH RRT
SIMPLIFIED BOILER REPLACEMENT
Ideal for approved collective flue systems
24 C / 28 C / 34 C
FPS: Flue Gas Protection System. The flue gas check valve (installed as standard) offers
easy connection to pressurised collective ue systems (e.g. in redevelopment projects).
The collective pressurised flue solution is more cost-effective for installers working with
smaller diameter chimneys.
COLLECTIVE
PRESSURISED
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NEW FERROLI TECHNOLOGY
1 : 10
The right choice for you
BLUEHELIX HITECH RRT
24 C / 28 C / 34 C
BLUEHELIX HITECH RRT
24 C - 28 C - 34 C
RANGE
THERMO
BALANCE
Page 12
COMFORT AND SAFETY
Functions
BLUEHELIX HITECH RRT
24 C / 28 C / 34 C
STOP AND GO
Using mixer taps for very short bursts causes the boiler ignition procedure to start up, which usually ends
immediately. Over time, these false starts can affect the average service life of the product. To prevent this,
the BLUEHELIX HITECH RRT has been equipped with ‘Stop and Go’, an electronic parameter that delays
burner ignition so that it only activates if hot water is actually used.
SUN EASY
The BLUEHELIX HITECH RRT has been designed to easily integrate into systems built with the latest
technology. The Sun Easy system is equipped with electronics that simplify operation with solar
panels, with both natural and forced circulation. A sensor situated on the DHW circuit constantly controls
the preheated water temperature from the solar panels, providing burner ignition only if this temperature
drops below the level required to ensure optimal user comfort.
DHW ECO-COMFORT
In ECO mode, DHW production is provided in the traditional way and saves energy by not preheating the
water. In COMFORT mode, thanks to the special temperature maintenance system of the heat exchanger,
hot water supply is even faster and more convenient, reaching the maximum certified 3-star comfort.
The efficiency and load profiles according to the ErP directive are at the top of the category (24 C & 28 C
/ A - XL | 34 C / A – XXL).
STOP AND GO
MODE
DHW
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CHARACTERISTICS
Hydraulics
BLUEHELIX HITECH RRT
24 C / 28 C / 34 C
KEY 8 DHW outlet 9 DHW inlet 10 System delivery 11 System return 14 Safety valve 32 Heating circulator 34 Heating temperature sensor 36 Automatic
air vent 42 DHW temperature sensor 56 Expansion vessel 74 System filling tap 95 Diverter valve 136 Flowmeter 186 Return sensor 193 Siphon 194 DHW
heat exchanger 241 Automatic bypass 294 System pressure sensor
CHARACTERISTICS
Energy labels
24 C 28 C 34 C
Page 14
BLUEHELIX HITECH RRT
TECHNICAL DATA
Pressure drops/head
BLUEHELIX HITECH RRT 24 / 28 C BLUEHELIX HITECH RRT 34 C
24 C / 28 C / 34 C
8.00
7.00
6.00
5.00
4.00
mC.A.
3.00
2.00
1.00
0.00
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2 1.3 1.4 1.5 1.6
m3/h
TECHNICAL DATA
Dimensions
BLUEHELIX HITECH RRT 24-28-34 C
8.00
7.00
6.00
5.00
4.00
mC.A.
3.00
2.00
1.00
0.00
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2 1.3 1.4 1.5 1.6
m3/h
View from above View from below
KEY 7 3/4” Gas inlet 8 1/2” DHW outlet 9 1/2” DHW inlet 10 3/4” System delivery 11 3/4” System return A6 Condensate discharge connection
Page 15
BLUEHELIX HITECH RRT
TECHNICAL DATA
Summary table
BLUEHELIX HITECH RRT 24 C 28 C 34 C
(Class
ERP Class
Heating max / min heat input kW 20.4 / 3.5 24.5 / 3.5 30.6 / 3.5
Heating max / min heat output (80/60°C) kW 20.0 / 3.4 24.0 / 3.4 30.0 / 3.4
Heating max / min heat output (50/30°C) kW 21.6 / 3.8 26.0 / 3.8 32.5 / 3.8
DHW max heat input (Hi) kW 25.0 28.5 34.7
DHW min heat input (Hi) kW 3.5 3.5 3.5
DHW max / min heat output kW 24.5 / 3.4 28.0 / 3.4 34.0 / 3.4
Pmax efficiency (80- 60°C) (Hi) % 98.1 98.1 97.9
Pmin efficiency (80-60°C) (Hi) % 98.0 98.0 98.0
Pmax efficiency (50-30°C) (Hi) % 10 6.1 10 6.1 10 6.1
Pmin efficiency (50-30°C) (Hi) % 107. 5 10 7. 5 10 7. 5
Efficiency 30% % 10 9.7 109.7 109.5
G20 supply gas pressure mbar 20 20 20
G20 max gas flow rate m
G20 min gas flow rate m
max / min G20 % 9.4 / 9.2 9.3 / 9.2 9.3 / 9.2
CO
2
G31 supply gas pressure mbar 37 37 37
G31 max / min gas flow rate kg/ h 1.94 / 0.27 2.21 / 0.27 2.70 / 0.27
max / min G31 % 10.3 / 9.8 10.3 / 9.8 10.3 / 10.0
CO
2
emission class (EN 15502-1) - 6 6 6
NO
x
Max heating working pressure bar 3 3 3
Min heating working pressure bar 0.8 0.8 0.8
Max heating temperature °C 95 95 95
Heating water content litres 2.9 2.9 4.3
Heating expansion vessel capacity litres 8 8 10
Heating expansion vessel preload pressure bar 0.8 0.8 0.8
DHW max working pressure bar 9 9 9
DHW min working pressure bar 0.3 0.3 0.3
DHW flow rate ∆t 25°C l/min 14 16 .1 19.5
DHW flow rate ∆t 30°C l/min 11.7 13.4 16.2
Protection rating (IEC 60529) IP X4D X4D X4D
Supply voltage V/Hz 230V / 50Hz 230V / 50Hz 230V / 50Hz
Heating absorbed electric power W 63 70 80
DHW absorbed electric power W 73 82 99
No-load weight kg 28 28 32
G - A++)
(Class
G - A)
3
/h 2.65 3.02 3.67
3
/h 0.37 0.37 0.37
A A
A
A
A
24 C / 28 C / 34 C
A
Page 16
NOTICE FOR SALES AGENTS:
In accordance with Ferroli Limited’s aim to constantly improve production ranges and
customer satisfaction levels, please be aware that aesthetic and/or dimensional features,
specifications and accessories may be subject to change.
Please take the utmost care to ensure that all technical and/or sales documents (lists,
catalogues, brochures etc.) provided to the customer have been updated according to the
latest edition.
Ferroli Ltd
The Granary, Borough Hill Farm, Catton Road,
Walton on Trent, Derbyshire, DE12 8LL
Tel. 0330 205 0002
www.ferroli.com
uk.sales@ferroli.com
07.22
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