Radiant R1K 50 Installation, Use And Maintenance Manual
Installation, Use
and Maintenance Manual
for model
R1K 50
Premix condensing system boiler
only heating
0476
R1K 50 - RAD - ING - Manuale - 1801.1_SK.3
SUMMARY
SUMMARY
INTRODUCTION 4
1. INSTALLER SECTION 7
1.1. INSTALLATION 8
1.1.1. GENER A L INS TALLATION WARNINGS 8
1.1.2. BOILER LOCATION ENVIRONMENTAL REQUIREMENTS 8
1.1.3. REFERENCE LEGISL ATION 9
1.1.4. BOILER OVERALL DIMENSIONS 10
1.1.5. JIG 10
1.1.6. OVERALL DIMENSIONS OF THE HEATING ONLY MODULE 10
1.1.7. OVERALL DIMENSIONS OF THE MODULE FOR REMOTE BOILER SUPPLY 11
1.1.8. MECHANICAL SYSTEM DIAGRAM 12
1.1.9. SYSTEM ACCES SORIES 14
1.1.10. CIRCULATOR PREVALENCE/FLOW DIAGRAM 16
1.1.11. GENERATOR INSTAL L ATION 17
1.1.12. HYDRAULIC CONNECTION 20
1.1.13. CHARACTERISTICS OF THE WATER OF THE SYSTEM 21
1.1.14. SYSTEM FILLING 23
1.1.15. FILLING THE CONDENSATE COLLECTION SIPHON 24
1.1.16. ANTI-FREEZE PROTECTION 25
1.1.17. GAS CONNECTION 26
1.1.18. ELECTRICA L CONNECTION 26
1.1.19. POWER SUPPLY 27
1.1.20. OPTIONAL ELECTRICAL CONNECTIONS 28
1.1.21. FUME EXHAUST FITTINGS 31
1.1.22. T YPES OF FUME EXHAUST SYSTEMS 32
R1K 50_EN
2. SUPPORT CENTER SECTION 37
2.1. FIRST START-UP 38
2.1.1. PRELIMINARY OPERATIONS FOR FIRST START-UP 38
2.1.2. BOILER COMMISSIONING 39
2.1.3. CO2 VALUE CHECK AND CALIBRATION 40
2.1.3. ACCESSING AND PROGRAMMING THE PARAMETERS 41
2.1.4. DIGITECH CS PARAMETERS TABLE 43
2.1.6. ELECTRIC FAN FREQUENCY/HEAT CAPACITY DIAGRAM 50
2.2. MAINTENANCE 51
2.2.5. GENERAL MAINTENANCE WARNINGS 51
2.2.8. TECHNICAL DATA 52
2.2.9. TECHNICAL ASSEMBLY 54
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R1K 50 - RAD - ING - Manuale - 1801.1_SK.3
SUMMARY
2.2.6. HYDRAULIC BOARD 55
2.2.7. WIRING DIAGRAM 56
2.2.13. ACCESSING THE BOILER 57
2.2.8. ACCESSING THE ELECTRONIC BOARD 58
2.2.16. SYSTEM EMPTYING 59
2.2.9. FAULT SIGNALLING CODES 60
2.2.10. ACTIVE FUNCTIONS SIGNALLING CODES 63
2.2.11. GAS CONVERSION 64
3. USER SECTION 65
3.1. USE 66
3.1.1. GENERAL USE WARNINGS 66
3.1.2. CONTROL PANEL 67
3.1.3. DISPLAY ICONS 68
3.1.4. INFO MENU DISPLAY DATA 69
3.1.5. START-UP 70
3.1.6. OPERATING MODE 70
3.1.7. INFORMATIONAL NOTE ON ANTI-FREEZE FUNCTION 71
3.1.8. FAULT SIGNALLING CODES 72
3.1.9. ACTIVE FUNCTIONS SIGNALLING CODES 74
R1K 50_EN
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R1K 50 - RAD - ING - Manuale - 1801.1_SK.3
INTRODUCTION
1.
INTRODUCTION
WARNING
Before starting any operation it is mandatory to
read this instruction manual, in relation to the
activities to be carried out as described in each
relevant section. Proper operation and optimal
performance of the boiler are ensured by strict
compliance with all the instructions given in this
manual.
The installation, use and maintenance manual is
an integral and essential part of the product and
must be delivered to the user.
MANUAL USERS
The manual users are all those who install, use
and maintain the boiler.
The boiler must be used and accessed only by
qualified operators that fully read and understood
the use and maintenance manual, paying par ticular
attention to the warnings.
READING AND SYMBOLS OF THE MANUAL
To ease the understanding of this manual,
recurrent symbols where used, in particular:
› On the outer margin of the page is placed a
thumb index indicating the type of user to which
the instructions in that section address.
DANGER
It identifies an information related to a
general danger that if not complied with, may cause
serious personal damage or even death.
ATTENTION
It identifies an information that if not
complied with may cause small or medium level
lesions to the person or serious deterioration to the
boiler.
WARNING
It identifies a precaution information that
must be observed in order to avoid damaging the
machine or parts of it.
MANUAL STORAGE
The manual must be carefully stored and replaced
in case of deterioration and/or low legibility.
If you misplace the use and maintenance manual,
you can request it from the Technical Support
Centre giving the serial number and model of the
boiler indicated on the plate placed on the right
side of its casing.
As an alternative, the use and maintenance manual
can be downloaded free from the on-line site www.
radiant.it, accessing the “download” section and
entering the boiler model.
_Prefazione_EN
› The titles are differentiated by thickness and
size in accordance with their hierarchy.
› The images contain important parts described
in the text, marked with numbers or letters.
› (See chap “chapter name”): this entry indicates
another section in the Manual that you should
refer to.
› Device: this term is used referring to the boiler.
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R1K 50 - RAD - ING - Manuale - 1801.1_SK.3
INTRODUCTION
1 .
MANUFACTURER WARRANTY AND
RESPONSIBILITY
The warranty of the Manufacturer is provided only
through its own authorized Technical Support
Centres, listed for each Region and Provence on
the site www.radiant.it, and covers all conformity
defects at the moment of sale.
The technical and functional features of the device
are ensured by its use in compliance:
1. with the use and maintenance instructions
contained in the manuals accompanying the
product, the content of which the customer
certifies that he is aware;
2. with the conditions and purposes to which
assets of the same type are intended.
For more information on the warranty validity,
its duration, the obligations and the exemptions,
please consult the First start-up certificate
attached to this manual.
› Energy labeling Directive 2010/30/CE,
› EU regulation 811/2013,
› EU regulation 813/2013,
› Gas Directive 2016/426/EU,
› Electromagnetic compatibility Directive
2014/30/CE,
› Performance Directive 92/42/CE,
› Low voltage Directive 2014/35/CE.
The materials used such as copper, brass,
stainless steel create a homogeneous, compact
and functional assembly, easy to install and
manage. In its simplicity, the boiler is equipped
with all accessories necessary to render it a
veritable independent heating unit. All boilers
are tested and delivered with a quality certificate
signed by the tester.
_Prefazione_EN
The manufacturer reserves:
› the right to modify the tools and relative
technical documentation without any obligation
to third parties; neither will the company be
held responsible for any inaccuracies in this
handbook deriving from printing or translation
errors;
› the material and intellectual ownership of
this manual and forbids its distribution and
duplication, even partial, without prior written
authorization.
PRODUCT CONFORMITY
RADIANT BRUCIATORI spa declares that its gas
boilers comply with the European Directives and
with the requirements provided in the European
standards below:
› Eco-design Directive 2009/125 CE,
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R1K 50 - RAD - ING - Manuale - 1801.1_SK.3
1. INSTALLER SECTION1. INSTALLER SECTION
The installation operations described in this section should
be performed only by qualified personnel, having the
appropriate technical training in the field for the installation
and maintenance of components of civil and industrial
domestic hot water production and heating plants.
INSTALLER
1.1. INSTALLATION
2. INSTALLATION
1.1.1. GENERAL INSTALL ATION
WARNINGS
ATTENTION
This machine may be used only for the
purpose for which it has been designed: heat water
to a temperature below boiling point at atmospheric
pressure. Any other use is considered wrong and
dangerous. The manufacturer is excluded from
any contractual or out of contract responsibility for
damage caused to people, animals or property due
to errors during installation.
ATTENTION
This boiler should be installed only
by qualified personnel, having the appropriate
technical training in the field for the installation and
maintenance of components of civil and industrial
domestic hot water production and heating plants.
ATTENTION
After having removed the packing, make
sure the equipment is intact. In case of doubt, do not
use the equipment and contact the supplier.
BEFORE INSTALLING THE BOILER, THE
INSTALLER MUST MAKE SURE THAT THE
FOLLOWING CONDITIONS ARE MET:
› The device is connected to a heating plant and a
water supply network appropriate for its power
and performance.
› The location must be properly vented through
an air vent.
› The air vent must be placed at floor level to
prevent it from being obstructed, protected by
a grid that does not hamper the useful section
of passage.
› The device is suitable for use with the type of
gas available by checking the boiler data plate
(placed on the inner side of the front casing.
› Make sure that the tubes and couplings are
perfectly sealed, without any gas leaks.
› Make sure that the grounding system works
properly.
› Make sure that the electrical systems is
suitable for the maximum power absorbed by
the equipment, value indicated on the data plate.
WARNING
Use only original RADIANT optional or kit
accessories (including electrical).
1.1.2. BOILER LOCATION
ENVIRONMENTAL
REQUIREMENTS
The boiler has a thermal power over 35 kW and,
therefore, it must be installed only into a heating
unit.
The device's installation location should be vented
due to the presence of threaded joints on the gas
adduction line. The location should be therefore
provided with vents as to ensure air exchange,
with output grid in the natural accumulation area
of eventual gas losses.
WARNING
DO NOT install the boiler in a technical
compartment near a swimming pool or a laundry, to
avoid that the combustion air is exposed to chlorine,
ammonia or alkaline agents that may worsen the
corrosion phenomenon of the heat exchanger. Failure
to observe this caution will void the warranty of the
heat exchanger.
1 Avvertenze gener ali per l'installazione_Locale c aldaia _cond _ alta potenza_EN
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R1K 50 - RAD - ING - Manuale - 1801.1_SK.3
WARNING
If the temperature in the boiler installation
location goes below -10 centigrades, please fill
the plant with anti-freeze liquid and insert and
electrical resistances kit (see chapter ‘ANTI-FREEZE
PROTECTION’).
WARNING
The manufacturer will not be held
responsible for damages caused by incorrect
installation not in conformity with the over mentioned
instructions and not protected adequately from the
freeze.
1.1.3. REFERENCE LEGISLATION
The installation must be realized according to
the requirements of current legislation and in
compliance with local technical regulations,
according to the indications of the good technique.
2. INSTALLATION
INSTALLER
1 Avvertenze gener ali per l'installazione_Locale c aldaia _cond _ alta potenza_EN
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R1K 50 - RAD - ING - Manuale - 1801.1_SK.3
INSTALLER
3. INSTALLATION
1.1.4. BOILER OVERALL DIMENSIONS
302
157
480
640
306
150
136
410
1.1.6. OVERALL DIMENSIONS OF THE
HEATING ONLY MODULE
160
145
209
1794
178
192
155
1.1.5. JIG
244
R- HEATING RETURN Ø 1” 1/4
G- GAS Ø 3/4
A- HEATING FLOW Ø 1” 1/4
SC- CONDENSATE DRAIN Ø 25 mm
107
42
70 94 47 129 70
RGsc A
157
530
157
157
504
524
524
RI RETURN SYSTEM Ø 1”1/2
AI DELIVERY SYSTEM Ø 1”1/2
157
200
514
1 Dimensioni_R1K 50_no INAIL_EN
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R1K 50 - RAD - ING - Manuale - 1801.1_SK.3
1.1.7. OVERALL DIMENSIONS OF THE
MODULE FOR REMOTE BOILER
SUPPLY
3. INSTALLATION
INSTALLER
209
1794
145
227 99227 99282282
160
178
192
155
1 Dimensioni_R1K 50_no INAIL_EN
157
157
200
157
157
504
524524
RI RETURN SYSTEM Ø 1”1/2
AI DELIVERY SYSTEM Ø 1”1/2
RB HEATING FLOW TO DHW
STORAGE CYLINDER
AB HEATING FLOW TO DHW
STORAGE CYLINDER
514
Ø 1”
Ø 1”
R1K 50 - RAD - ING - Manuale - 1801.1_SK.3
11
INSTALLER
1.1.8. MECHANICAL SYSTEM DIAGRAM
HEATING ONLY INSTALLATION
The boiler can manage a heating system at a fixed point delivery temperature or in climatic compensation
with an external probe, managing the modulation according to the actually requested thermal load.
1. INSTALLATION
1
2
fume exhaust system
3
GAS
DELIVERY
SYSTEM
RETURN
SYSTEM
condensate
LOAD
SYSTEM
1 Schema meccanico impianto_R1K 50_no INAIL _EN
12
DESCRIPTION
1 EXTERNAL PROBE
2 REMOTE OPEN THERM
3CONTROL PANEL
R1K 50 - RAD - ING - Manuale - 1801.1_SK.3
1. INSTALL ATION
HEATING INSTALLATION + REMOTE BOILER SUPPLY SYSTEM
The boiler can manage a heating system at a fixed point delivery temperature or in climatic compensation
with an external probe, managing the modulation according to the actually requested thermal load.
The boiler probe activates the system in order to pre-heat the boiler, the boiler will be put into domestic
circuit mode and the deviating valve switches to the remote boiler.
1
2
INSTALLER
1 Schema meccanico impianto_R1K 50_no INAIL _EN
4
DESCRIPTION
1 EXTERNAL PROBE
2 REMOTE OPEN THERM
3CONTROL PANEL
4 REMOTE BOILER NTC PROBE
fume exhaust system
condensation
3
GAS
LOAD SYSTEM
DELIVERY SYSTEM
RETURN SYSTEM
R1K 50 - RAD - ING - Manuale - 1801.1_SK.3
13
INSTALLER
1.1.9. SYSTEM ACCESSORIES
DIVERTER VALVE KIT
The kit allows combining the thermal generator
with a remote boiler for the production of domestic
hot water (cod. 26097LP, fig. 1).
In this configuration, it is possible to manage the
domestic circuit in an independent manner, by
implementing a diverter valve which ensures the
power supply of the serpentine upon the preheating request of the boiler.
The kit is completed with a probe for the external
boiler and with a power supply cable of the diverter
valve which is connected directly to the electronic
board of the generator.
1. INSTALLATION
HYDRAULIC SEPARATOR
In order to always ensure to the heat generator an
operation without problems related to two low heat
capacities (due, for example, to closed radiators or
to impurities of various type), it is strictly necessary
to install a trip unit, as an alternative, a heat
exchanger which separates the hydraulic circuit.
Choosing a separation system in the detriment of
another is exclusively imposed by the type of the
system.
In case of a new system o r in case of replacem ent of
the generator with the possibility to wash the water
pipes, it is recommended to install a hydraulic
separator (code 26205LA, fig. 1).
The hydraulic separator creates an area with
reduced load loss, which allows hydraulically
rendering independent the primary and secondary
circuits connected to it. With the hydraulic separator
you can thus have a production circuit with constant
heat capacity and a distribution circuit with variable
heat capacity, operation conditions typically specific
to modern air-conditioning systems.
1 Accessori impianto_R1K 50_no INAIL_EN
cod. 26097LPcod. 26205LA cod. 65-00440
fig. 1
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R1K 50 - RAD - ING - Manuale - 1801.1_SK.3
Particular attention should be given, during the
design phase, to possible temperature variations
to which the circuits can be subject due to the
generated mixing inside the hydraulic separator.
A secondary circuit with a heat capacity higher
than the circulatory one of the primary circuit
generates, in fact, by means of the hydraulic
separator, a delivery temperature lower than the
one of the primary circuit.
1. INSTALL ATION
INSTALLER
1 Accessori impianto_R1K 50_no INAIL_EN
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R1K 50 - RAD - ING - Manuale - 1801.1_SK.3
INSTALLER
1.1.10. CIRCULATOR PREVALENCE/FLOW DIAGRAM
1. INSTALLATION
Wilo-Yonos PARA RS 15/7.5
H/m
8
PWM1
4770/ 5
7
PWM1
4270/ 15
6
PWM1
5
3780/ 25
4
PWM1
3280/ 35
3
PWM1
2780/ 45
PWM1
2
2280/ 55
PWM1
1780/ 65
1
PWM1
1290/ 75
PWM1
790/ 85
0
PREVALENCE (m)
0 0,5 1,0 1,5 2,0 2,5 3,0 3,5
0 0,2 0,4 0,6 0,8 1,0
20 4 6 8 10 12 14
/W
P
1
60
40
20
0
0 0,5 1,0 1,5 2,0 2,5 3,0 3,5
max.
4,0
4,0
Q/m³/ h
Q/l/s
Q/Igpm
max.
Q/m³/ h
p/kPa
80
70
60
50
40
30
20
10
0
Appliance Loss
FLOW RATE (m3/h)
1 Diagramma portata-prevalenza circol atore _R1K 50_YONOS PARA RS 15-7.5_EN
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R1K 50 - RAD - ING - Manuale - 1801.1_SK.3
1.1.11. GENERATOR INSTALLATION
MINIMAL TECHNICAL SPACES
1. INSTALL ATION
INSTALLER
X Y
In order to allow the access inside the boiler for
maintenance operations, you have to respect the
minimum technical spaces indicated in figure 1.
WARNING
The incorrect slopes of the device can
cause the incorrect discharge of condensate by
means of the discharge duct with consequent
condensate stagnation inside the condensate
module.
WARNING
The boiler must be installed only on a
vertical solid wall, able to sustain its weight.
WARNING
The boilers have the electrical
protection degree IPX5D. The outdoor installation
in partially protected environments (platform roof,
balcony - see fig. 2) is allowed in compliance with
the related standards. The Company is not held
liable for installations in environments with a
temperature under –10°C or non-compliant with
the above indications.
A
H
B
A
A - 200 mm
B - 300 mm
X - 60 mm
Y - 60 mm
H - 1,000 mm
balcony/ platform roof
1,200 mm minimum
fig.1
A
SECTION A-A
1 Installazione generatore_R1K 50_EN
fig. 2
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R1K 50 - RAD - ING - Manuale - 1801.1_SK.3
INSTALLER
WALL MOUNTING BY MEANS OF FIXING BRACKET
is slightly inclined towards the rear part (1-1.5°) in order to evacuate the condensate.
In order to fix the thermal generator on the wall, proceed as follows:
1. fix on the wall (fig. 1), using the fisher, the upper bracket;
2. hook the eyelets of the boiler into the adequate hooks (fig. 2);
3. unscrew the fixing screws of the lower bracket (fig. 3) ensuring the free sliding of the bracket (fig. 4)
4. adjust the inclination of the boiler (fig. 5) by sliding the lower bracket ensuring an inclination of the
1. INSTALLATION
WARNING
In order to avoid condensate stagnations inside the condensate module, check that the boiler
WARNING
The device must be installed only on a vertical solid wall, able to sustain its weight.
towards the boiler;
boiler, against the vertical, of about 1–1.5°.
LOWER
BRACKET
fig. 3
fig. 2
fig.1
1 Installazione generatore_R1K 50_EN
fig. 5
18
fig. 4
R1K 50 - RAD - ING - Manuale - 1801.1_SK.3
LOWER
BRACKET
1-1.5°
1. INSTALL ATION
INSTALLATION ON SELF-SUPPORTING FRAME
WARNING
During the installation of the heat generator, pay maximum attention to the installation of the
self-supporting frame. The frame must rest on a perfectly flat surface and, when supported against
the wall, the latter must be perfectly angled. The incorrect slopes of the device can cause the incorrect
discharge of condensate by means of the discharge duct with consequent condensate stagnation inside
the condensate module. The correct installation of the frame allows obtaining, acting on the lower
bracket, a counterslope of the device against the perpendicular.
In order to mount the frame and therefore the generator, proceed as follows:
1. check the angle of the wall with the floor;
2. assemble the side profiles 3 and 4 on the pillars 1 and 2 (fig. 1);
3. assemble the side pillars 1 and 2 on the horizontal crossbeam 5;
4. assemble the central crossbeam 8 and the lower one 7;
5. complete the assembly, position the frame binding it to the wall 9 (if provided) and on the floor 10;
6. mount the upper bracket 6 and hook the eyelets of the boiler into the adequate hooks 11;
7. make sure that the frame is angled, adjust the inclination of the boiler by means of the lower bracket
(see "Wall mounting by means of fixing bracket") ensuring an inclination of the boiler, against the
vertical, of about 1–1.5°;
8. complete the installation by assembling the hydraulic components.
INSTALLER
5
1
2
1 Installazione generatore_R1K 50_EN
8
4
7
3
6
9
9
10
10
10
10
11
11
fig.1
R1K 50 - RAD - ING - Manuale - 1801.1_SK.3
19
INSTALLER
1. INSTALLATION
1.1.12. HYDRAULIC CONNECTION
DANGER
Make sure that the tubes of the water and
heating plant are not used as grounding system for
the electrical plant. There are not suitable for such
use.
WARNING
To prevent voiding the warranty and to
ensure the proper operation of the boiler, please
wash the plant (if possible when hot) with suitable
pickling or descaling solutions in order to remove the
impurities coming from tubes and radiators.
WARNING
If the boiler is installed in a hydrostatic
position lower than those of the user devices
(radiators, fan coils, etc.), mount the shut-off valves
on the domestic water heating circuit to ease the
performance of the maintenance operations if it is
necessary only to empty the boiler.
DOMESTIC CIRCUIT
In order to prevent limestone build-up and
damages to the domestic water heat exchanger,
the hardness of the domestic supply water
should not exceed 15 °f. However, please check
the characteristics of the water used and install
suitable treating devices.
The heat exchanger coil cleaning frequency
depends on the hardness of the supply water and on
the presence of solid residues or impurities inside
the water that are often present in case of recently
installed plants. Based on the characteristics of
the infeed water, you should install suitable water
treating devices, for residues presence please
install a line filter.
The pressure of the cold infeed water should be
between 0.5 and 6 bar. In case of greater pressure
values, please install a pressure reducer upstream
from the boiler.
WARNING
When connecting the equipment to
water supply, avoid excessive bending and recovery
operations from any off axis positioning that may
damage the tubes causing leaks, malfunction or
early wear.
WARNING
In order to avoid any vibrations and noises,
do not use tubes with small diameters or elbows with
small radius and significant cut-off of the passage
sections.
WARNING
Connect the boiler safety drains to a
discharge funnel. The manufacturer is not responsible
for any floods due to safety valve opening in case of
plant overpressure.
HEATING CIRCUIT
In order to avoid any scale or deposits on the
primary exchanger, the hardness of the heating
circuit infeed water should not exceed 25 °f.
However, please check the characteristics of the
water used and install suitable treating devices.
This treatment is mandatory if frequent episodes
of return water or partial or total emptying of the
plant occur.
WARNING
In case the boiler is installed as part of
a low temperature circuit, please install a safety
thermostat on the heating flow, which can stop
the boiler activity in case of high heating flow
temperature. The company assumes no liability for
damage caused to persons or for failure to comply
with these instructions.
1 Allacciamento idraulico_combinata_EN
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R1K 50 - RAD - ING - Manuale - 1801.1_SK.3
1. INSTALL ATION
INSTALLER
1.1.13. CHARACTERISTICS OF THE
Water treatment
WATER OF THE SYSTEM
In order to preserve the integrity of the water-
For a correct operation of the system, it is
necessary to make sure that:
1. The system does not present losses or that the
most obvious are at least eliminated;
2. If an automatic filling system is present, a litre
meter must be installed in order to precisely know
the extent of any losses;
3. The filling in of the system and the top ups are
performed with softened water in order to reduce
the total hardness. The water must also be treated
in order to maintain the pH within the provided
threshold so as to avoid corrosion phenomena.
4. Either on new systems or on replacements, the
system must be fitted with efficient systems which
ensure the elimination of the air and impurities:
Y filters, micro impurity separators and micro
bubbles of air separators;
5. Avoid draining the water of the system during the
routine maintenance even if it is about apparently
insignificant quantities: for example, in order to
clean the filters, provide the system with adequate
shut-off valves;
1 Riempimento dell'impianto_MIAH4_R1K 10 0_v.1_ EN
6. Always perform an analysis of the water of
the system before opening the communication
between the new generator and the system, in
order to establish if the parameters present in the
water indicate the need to fully drain the system,
to use the water already present in the system or
to chemically wash the system using utility water
adding a detergent when it is suspected that the
system might be dirty or particularly clogged and
at the next loading with new treated water.
fume exchanger and to guarantee optimal thermal
exchanges, it is necessary that the water of the
primary circuit, circulating inside the exchanger
of the condensate boiler, has the characteristics
defined and constant in time. To obtain this, it
is fundamental to perform a series of system
preparation and maintenance operations such as:
• washing the system;
• check the characteristics of the water of the
system;
The type of treatment to be performed will be
chosen based on the characteristics of the water
to treat, of the type of system and on the requested
purity limits
Oxygen
A certain amount of oxygen always enters the
system, both during the filling phase and during
the use in case of reintegration or presence of
hydraulic components without oxygen barriers.
The reaction between the oxygen and the stainless
steel creates corrosion and forms sludge. While
the water fume exchanger is made of stainless
steel, and therefore it is not subject to corrosion,
the sludge created in the carbon steel system
is deposited in the warm points, including the
exchanger. This has the effect to reduce the heat
capacity and thermally insulate the active parts of
the exchanger, which might cause damages.
The precautions to limit the phenomena are:
- Mechanical systems: a deaerator combined with
a sludge remover, correctly installed, reduce the
quantity of oxygen circulating inside the system.
- Chemical systems: the additives allow the oxygen
to dissolve in water.
R1K 50 - RAD - ING - Manuale - 1801.1_SK.3
21
INSTALLER
Hardness
The filling and make-up water hardness brings
a certain amount of limestone into the system.
It attacks the warm parts of the exchanger, thus
creating load losses and thermal insulation losses
on the active parts. This phenomena can cause
damages.
The filling and make-up water of the system, if
it does not fall under the values indicated below,
should be softened. Moreover, additives can be
added in order to maintain the limestone into
the solution. The hardness must be periodically
checked and registered.
1. INSTALLATION
Acidity 7 < pH < 8.5
Conductivity < 400 μs/cm (at 25°C)
Chlorides < 125 mg/l
Iron < 0.5 mg/l
Copper < 0.1 mg/l
If the above indicated limits are exceeded, a water
must be chemically treated.
The type of treatment to be performed will be
chosen based on the characteristics of the water
to treat, of the type of system and on the requested
purity limits.
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R1K 50 - RAD - ING - Manuale - 1801.1_SK.3
1. INSTALL ATION
INSTALLER
1.1.14. SYSTEM FILLING
WARNING
For system filling use only clean tap
water. In order to prevent limestone build-up and
damages to the domestic water heat exchanger,
the hardness of the domestic supply water
should not exceed 15° Fr. However, please check
the characteristics of the water used and install
suitable treating devices.
WARNING
If the system is filled by adding ethylene
glycol-type chemical agents you have to install on
the loading system a hydraulic trip unit in order
to separate the heating circuit from the domestic
circuit.
Before powering up the boiler, fill the system as
follows:
tap until the pressure gauge reaches the
design pressure.
fig. 1
1. slightly loosen the cap of the jolly valve placed
on the top of the condensing block to release
the air form the top of the system (fig.1);
2. check that the jolly valves vent the air present
in the system are not blocked
3. open the general domestic water input tap and
load the system by exhaling all the air;
4. use pressure gauge present in the system to
1 Riempimento dell'impianto_MIAH4_R1K 10 0_v.1_ EN
make sure that the system pressure reaches
the design value;
5. after performing this operation, make sure
that the loading tap is properly closed.
6. Open the air relief valves of the radiators and
check the air removal process. When the
water starts to leak close the radiators air
relief valves.
7. If after performing these operations you
observe a decrease of the water pressure
inside the system, open once again the loading
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R1K 50 - RAD - ING - Manuale - 1801.1_SK.3
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