Radiant R2K 55 Manual

R2K 55 - RAD - ING - Inst.Manual - 2002.1_CSA
Installation and
Maintenance Manual for
model
WARNING
If the information in these instructions is not followed exactly, a fire or explosion may result causing property
damage, personal injury or death.
FOR YOUR SAFETY
— Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.
— WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any phone in your building.
• Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the fire department.
— Installation on and service must be performed by a qualified installer, service agency or the gas supplier.
R2K 55

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R2K 55 - RAD - ING - Inst.Manual - 2002.1_CSA
SUMMARY
INTRODUCTION 4
1. INSTALLER SECTION 7
1.1. INSTALLATION 8
1.1.1. GENERAL INSTALLATION WARNINGS 8
1.1.2. BOILER LOCATION ENVIRONMENTAL REQUIREMENTS 8
1.1.3. REFERENCE LEGISLATION 9
1.1.4. UNPACKING 10
1.1.5. OVERALL DIMENSIONS (inch) 11
1.1.6. HYDRAULIC CONNECTION KIT 11
1.1.7. POSITIONING AND CLEARANCES TO COMBUSTIBLE MATERIAL AND SERVICE CLEARANCES 12
1.1.9. CIRCULATOR PERFORMANCE CURVE 14
1.1.10. WATER CONNECTIONS 15
1.1.11. PRESSURE RELIEF VALVE KIT 16
1.1.12. SYSTEM FILLING 17
1.1.13. FILLING THE CONDENSATE COLLECTION SIPHON 18
1.1.14. ANTI-FREEZE PROTECTION 20
1.1.15. GAS CONNECTION 21
1.1.16. ELECTRICAL CONNECTION 21
1.1.17. POWER SUPPLY 22
1.1.18. OPTIONAL ELECTRICAL CONNECTIONS 23
1.1.19. VENTING 25
1.1.20. TYPES OF EXHAUST SYSTEMS 28
1.1.21. TABLE 1: ALLOWABLE VENT LENGTHS 33
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
2.1.4. ACCESSING AND PROGRAMMING THE PARAMETERS 41
2.1.5. DIGITECH CS (MIAH402) PARAMETERS TABLE 43
2.1.6. COMBUSTION BLOWER FREQUENCY/HEAT CAPACITY DIAGRAM 51
2.2. MAINTENANCE 52
2.2.7. GENERAL MAINTENANCE WARNINGS 52
2.2.8. TECHNICAL DATA 53
2.2.9. TECHNICAL ASSEMBLYTECHNICAL ASSEMBLY 55
2.2.10. INTERNAL PIPING SCHEMATIC 56
2.2.11. 3-WAY VALVE OPERATION 57
SUMMARY

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R2K 55 - RAD - ING - Inst.Manual - 2002.1_CSA
2.2.12. WIRING DIAGRAM 58
2.2.13. ACCESSING THE BOILER 59
2.2.14. ACCESSING THE ELECTRONIC BOARD 60
2.2.15. SYSTEM EMPTYING 61
2.2.16. FAULT SIGNALLING CODES 62
2.2.17. ACTIVE FUNCTIONS SIGNALLING CODES 65
2.2.18. CONVERSION TO A DIFFERENT GAS TYPE 66
2.2.19. POSITIONS OF THE ELECTRODES 67
SUMMARY

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R2K 55 - RAD - ING - Inst.Manual - 2002.1_CSA
2.
INTRODUCTION
WARNING
Before starting any operation it is mandatory to read
this instruction manual, in relation to the activities
performed 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 particular
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.
› 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.
DANGER
It identifies information related to a
general danger that if not complied with, may cause
serious personal damage or even death.
ATTENTION
It identifies information that if not complied
with may cause small or medium level burns to the
person or serious damage to the boiler.
WARNING
It identifies a precaution information that
must be observed in order to avoid damaging the
machine or various parts.
MANUAL STORAGE
The manual must be stored carefully and replaced
in case of deterioration and/or low legibility.
If you misplace the use and maintenance manual,
you can request a copy from the Technical Support
Center. It is important to provide the model number
and serial number of the unit which is found on the
inside surface of the right panel.
INTRODUCTION

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R2K 55 - RAD - ING - Inst.Manual - 2002.1_CSA
2.
MANUFACTURER WARRANTY AND
RESPONSIBILITY
The Manufacturer’s warranty is provided only
through its own authorized Technical Support
Centers, listed for each Region on the site
www.radianthydronics.com, and covers all
manufacturing defects at the time of sale.
The technical and functional features of the unit are
ensured when proper installation and miantenance
is carried out. Conditions of Manufacturer’s
warranty includes the following:
1. The customer is aware of and follows
instructions contained in the manuals that
accompany the product.
2. Annual service check up is required to keep
warranty valid.
3. The unit is installed and operated in the
conditions in which it is designed to.
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.
The manufacturer reserves:
› the right to modify the tools and relative
technical documentation without any obligation
to third parties;
› 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 with reference to
ANSI Z21.13-2017 • CSA 4.9-2017 GAS FIRED LOW
PRESSURE STEAM AND HOT WATER BOILERS,
declares that its gas boilers are professionally
manufactured.
The materials used such as copper, brass,
stainless steel create a homogeneous, compact
and functional assembly, easy to install and
maintain. The boiler is equipped with all
accessories necessary to provide a dependable
independent heating unit. All boilers are tested
and delivered with a quality certificate signed by
the testing department.
INTRODUCTION

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.
1. INSTALLER SECTION
1. INSTALLER SECTION

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R2K 55 - RAD - ING - Inst.Manual - 2002.1_CSA
1. INSTALLATION
INSTALLER
1.1. INSTALLATION
1.1.1. GENERAL INSTALLATION
WARNINGS
This boiler must be installed in accordance with
local codes, if any; if not, follow the National Fuel
Gas Code, ANSI Z223.1/NFPA 54, or the Natural
Gas and Propane Installation Code, CAN/CSA
B149.1, as applicable.
WARNING
This unit 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.
WARNING
This boiler should be installed only by
qualified service technician, 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.
WARNING
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 PRESENT:
› The unit 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 air flow.
› The unit 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 gas lines are properly sealed
without any gas leaks.
› Make sure that the grounding system works
properly.
› Make sure that the electrical system is suitable
for the maximum power required 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 shall be installed so the gas ignition
system components are protected from water
(dripping, spraying, rain, etc.) during appliance
operation and service (circulator replacement,
condensate trap, control replacement, etc.).
The boiler installed using inside air supply must
provide provisions for Combustion Air and
Ventilation Air in accordance with section 5.3, Air
for Combustion and Ventilation, of the National
Fuel Gas Code, ANSI Z 223,1/NFPA 54, or section
7,2, 7.3, or 7.4, of CAN/CSA B 149, Installation
Codes, or local codes having jurisdiction.
Where an exhaust fan or any other air consumption
appliance is installed in the same space as the

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R2K 55 - RAD - ING - Inst.Manual - 2002.1_CSA
1. INSTALLATION
INSTALLER
boiler, sufficient air openings must be available to
provide fresh air when all appliances are operating
simultaneously. It is essential that in rooms
where the boiler is installed to provide as much
air as required by normal combustion of the gas
consumed by the varius appliances. Consequently,
it maybe necessary to make openings in the walls
to provide air inlet into the rooms.
Application where air from the structure is used
to supply combustion air for the unit, the following
openings are required:
1. Have a total free section of a least 25 mm2 every
kW (1 in2 for every 1000 Btu/hr) of heat input, with
a minimum of 100 cm2 (15.5 in2);
2. Where required by code or when required for
additional opening must be provided at the highest
practical elevation.
With a hermetically sealed combustion chamber
and air supply circuit from outdoors, the boiler may
be installed in any room in the home. Keep boiler
area clear and free from combustible materials,
gasoline and other flammable vapors and liquids.
WARNING
If the temperature in the boiler installation
location goes below 14°F centigrades, please fill
the system with anti-freeze liquid and insert and
electrical resistances kit (see 1.1.14 ‘ANTI-FREEZE
PROTECTION’).
1.1.3. REFERENCE LEGISLATION
This boiler must be installed in accordance with
local codes, if any; if not, follow the National Fuel
Gas Code, ANSI Z223.1/NFPA 54, or the Natural
Gas and Propane Installation Code, CAN/CSA
B149.1, as applicable.

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R2K 55 - RAD - ING - Inst.Manual - 2002.1_CSA
1. INSTALLATION
INSTALLER
1.1.4. UNPACKING
WARNING
Please unpack the boiler just before
installing it. The Company is not responsible for
the damages caused to the device due to incorrect
storage.
WARNING
The packing elements (cardboard
box, wooden crate, nails, fasteners, plastic bags,
expanded polystyrene, etc.) are dangerous and must
be kept out of the reach of children, they should be
biscarded properly.
To unpack the boiler, proceed as follows:
› Place the packed boiler on the floor (fig. 1-A)
and remove the fasteners opening the four flaps
of the box outwards.
› Turn the boiler at 90° holding it with your hand
(fig. 1-B).
› Lift the box (fig. 1-C) and remove the guards (fig.
1-D).
C
B
D
A
INSTALLATION
fig. 1

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R2K 55 - RAD - ING - Inst.Manual - 2002.1_CSA
1. INSTALLATION
INSTALLER
1.1.5. OVERALL DIMENSIONS (inch)
1.1.6. HYDRAULIC CONNECTION KIT
An hydraulic kit equipped with hydraulic
connections and safety valve (see ‘VS’ fig.3) is
supplied by RADIANT.
11.8
6.1
5.3
5.9
25.19
19.09
16.14
G
SC
8.31"
4.44"
2.76" 6.18"
R A
16.14"
9.61"
2.05"
4.21"
2.76"
3.31"6.06"
C F
(410mm)
(211mm)
(70mm) (113mm) (157mm) (70mm)
(154mm)
(84mm)
(279mm)
(107mm)
(52mm)
VS
RA
A
F
C
CG
G
INSTALLATION
(*) NOTE: THESE ARE CONNECTION SIZES
BEFORE VALVE KIT/CONNECTION CONVERSION
KIT IS INSTALLED.
fig. 2
fig. 4
R - CENTRAL HEATING RETURN Ø 3/4” NPT
C - DOMESTIC HOT WATER OUTLET Ø 1/2” SWEAT
G - GAS Ø 3/4” NPT
F - COLD WATER INLET Ø 1/2” SWEAT
A - CENTRAL HEATING SUPPLY Ø 3/4” NPT
R - CENTRAL HEATING RETURN Ø 3/4” *
SC- CONDENSATE DRAIN Ø 0.78 in
A - CENTRAL HEATING SUPPLY Ø 3/4” *
G- GAS Ø 1/2” *
C - DOMESTIC HOT WATER OUTLET Ø 1/2” *
F - COLD WATER INLET Ø 1/2” *
fig. 3

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R2K 55 - RAD - ING - Inst.Manual - 2002.1_CSA
1. INSTALLATION
INSTALLER
1.1.7. POSITIONING AND CLEARANCES TO COMBUSTIBLE MATERIAL AND
SERVICE CLEARANCES
The boiler must be installed only on a vertical
solid wall, able to sustain its weight.
This boiler has been certified to be installed with
“0” clearances to combustible material.
In order to allow the access inside the boiler for
maintenance operations, follow the minimum
service clearances indicated in figure 5.
To facilitate the installation, the boiler is provided
with a jig that allows setting in advance the
connections to the tubes providing the ablility
of connecting the water heaters to completed
masonry structure.
1.1.8. ATTACHING THE BOILER TO WALL
To position the unit, proceed as follows:
1. Trace a line using a spirit level (min. length 25 cm / 10”) on the installation wall (fig. A).
2. Mark the two points to insert the two screws (fig. B) and drill the wall (fig. C).
3. Fix the wall bracket using the screws (fig. D) provided. Hang the boiler using the attached holes (E-F).
H
B
A
Y
X
15.98"
(406mm)
15.98"
(406mm)
HOLES
FIXING
INSTALLATION
A - 7.8 inch
B - 11.8 inch
X - 0 inch
Y - 0 inch
H - 20 inch
fig. 5
fig. F
fig. A fig. B
fig. C
fig. D
fig. E

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R2K 55 - RAD - ING - Inst.Manual - 2002.1_CSA
1. INSTALLATION
INSTALLER
4. To make it easier the outlet of the condensate, the boiler, once it is hung onto the wall, must have the
right slope. Please use the lower wall bracket (fig.6);
5. Unscrew the lower bracket screws from the bottom of the boiler. Slide the lower bracket (fig. 7) in
order to separate the boiler from the wall from 1-1.5° (fig. 8).
6. Perform the connections.
1-1.5°
LOWER WALL
BRACKET
LOWER WALL
BRACKET
LOWER WALL
BRACKET
fig. 6
fig. 7 fig. 8

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R2K 55 - RAD - ING - Inst.Manual - 2002.1_CSA
1. INSTALLATION
INSTALLER
1.1.9. CIRCULATOR PERFORMANCE CURVE
UPSO 15-58 AOKR
III
II
I
H (ft)
Q (US gpm)
0 2 4 6 8 10
22
20
18
16
14
12
10
8
6
4
2
0
INSTALLATION
HEAD LOSS ft W.C.
FLOW RATE US gpm
III
Circulator priority maximum speed
- - - - Appliance Loss
fig. 9

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R2K 55 - RAD - ING - Inst.Manual - 2002.1_CSA
1. INSTALLATION
INSTALLER
1.1.10. WATER CONNECTIONS
DANGER
Make sure that the tubes of the water and
heating unit are not used as grounding system for the
electrical unit. There are not suitable for such use.
WARNING
To prevent voiding the warranty and to
ensure the proper operation of the boiler, wash the unit
(if possible when hot) with suitable descaling solution 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 necessary to only empty the
boiler.
WARNING
When connecting the equipment to water
supply, avoid excessive bending and recovery operations
from improper positioning that may damage the tubes
causing leaks, malfunction or premature 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.
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 8.4°
dh (degrees hardness). 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 inlet water, you should install suitable water
treatment devices, for residues presence. Please
install an inline filter.
The pressure of the cold inlet water should be
between 7.2 psi (0.5 bar) and 150 psi (10.34 bar). In
case of greater pressure values, please install a
pressure reducer upstream from the boiler.Please
refer to local jurisdictions on the requirements for
cold inlet water pressure.
HEATING CIRCUIT
In order to avoid any scale or deposits on the primary
exchanger, the hardness of the heating circuit inlet
water should not exceed 14° dh (degrees hardness).
However, please check the characteristics of the
water used and install suitable treatment devices.
To protect the central heating system from damaging
corrosion, flakes or deposits it is important to clean
the hydronic system using cleaners such as Fernox F3
Cleaner. For long term protection against corrosion
and deposits, the use of inibitor (such as Fernox F1
inhibitor) is required after cleaning and flushing of
the hydronic system. It is important to monitor the
concentration of the inibitor during commisioning and
during servicing of unit.
WARNING
Failure to clean the central heating system
or add adequate inibitor invalidates the compliance
warranty.
Connect the boiler safety drains (heating circuit safety
valve) to a discharge funnel. The manufacturer is not
responsible for any floods due to safety valve opening
in case of unit excessive presure build up.
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.
INSTALLATION

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R2K 55 - RAD - ING - Inst.Manual - 2002.1_CSA
1. INSTALLATION
INSTALLER
1.1.11. PRESSURE RELIEF VALVE KIT
To complete the installation of the boiler, you must
install an approved 3/4”, maximum 30 PSI (2 bar)
pressure relief valve on the heating return.
A hydronic kit equipped with hydronic connections
and safety valve (see ‘VS’ fig. 10) is available and
supplied by RADIANT.
ATTENTION
The pressure relief valve MUST TO BE
INSTALLED in any case.
ATTENTION
The pressure relief valve should be placed
as close to the boiler as possible. No other valve
should be placed between the pressure relief valve
and the boiler.
DANGER
Improper installation of the pressure
relief valve may result in property damage, personal
injury, or death. Follow all instructions and guidelines
when installing the pressure relief valve. The valve
should be installed only by a licensed professional.
When installing the valve, follow these guidelines:
› Direct the discharge piping of the pressure relief
valve so that hot water will not splash on anyone
or any nearby equipment.
› Attach the discharge line to the pressure relief
valve and run the end of the line to within 6-12”
(150-300mm) of the floor.
› Ensure that the discharge line will allow free and
complete drainage without restriction. Do not
install a reducing coupling or other restriction
on the discharge line.
VS
RA
A
F
C
CG
G
INSTALLATION
fig. 10

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R2K 55 - RAD - ING - Inst.Manual - 2002.1_CSA
1. INSTALLATION
INSTALLER
1.1.12. SYSTEM FILLING
WARNING
For system filling use only clean tap water.
WARNING
If the system is filled by adding ethylene
glycol-type chemical agents it is suggested to install
a system fender on the hydronic system in order to
separate the heating circuit from the domestic circuit.
Before powering up the boiler, fill the system as
follows:
1. Make sure the circulator is not blocked;
2. Slightly loosen the cap of the circulator air
eliminator (1-fig. 11) to release the air from the
system;
3. Slightly loosen the cap of the air eliminator
placed on the top of the condensing block
(fig. 13) to release the air form the top of the
system;
4. Open the feeding tap “R” (fig. 12);
5. Release all the air;
6. Use pressure gauge “M” (fig. 12) to make sure
that the system pressure reaches 1.2 bar (fig.
14);
7. After performing this operation, make sure
that the loading tap “R” (fig. 12) is properly
closed.
2
1
R
M
INSTALLATION
fig. 11
fig. 12
fig. 13

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R2K 55 - RAD - ING - Inst.Manual - 2002.1_CSA
1. INSTALLATION
INSTALLER
8. Unscrew the circulator cap (2-fig.11) to release
any air bubbles and close it to prevent water
leakage;
9. 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.
10. If after performing these operations you
observe a decrease of the water pressure
inside the system, open once again the loading
tap “R” until the pressure gauge indicates the
value of 1.2 bar (fig. 14)
1.1.13. FILLING THE CONDENSATE
COLLECTION SIPHON
Before starting the boiler you have to fill the
condensate collection siphon in order to avoid flue
back up through the siphon.
Fill the condensate collection siphon as follows
(see fig. 15):
› Unscrew the “T” cap from the siphon, fill three
quarters of the the siphon with water and screw
the “T” cap back in;
› Connect the dedicated flexible condensate
draining tube “P” to a waste disposal system.
The condensate can be drained directly in the
sewer system by inserting an easily serviceable
siphon.
WARNING
After the first months of boiler operation,
it is recommended to clean the condensate trap, to
eliminate possible deposits coming from the first
flow of the condensate inside the boiler technical
components. These deposits could cause a
malfunctioning of the trap.
P
T
fig. 14
fig. 15

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R2K 55 - RAD - ING - Inst.Manual - 2002.1_CSA
1. INSTALLATION
INSTALLER
CONDENSATE DRAIN
The boiler produces a significant amount of
condensate during operation. This condensation
has an acidic pH of 3-5. Follow all local codes and
regulations when disposing of condensate from
the boiler.
The project engineer should consider the
possibility of installing systems to eliminate the
acidic condensation, according to system power
and buildings’ use.
The system should be designed to avoid
the condensate freezing. Before the boiler
commissioning, check the correct condensate
flow.
WARNING
Check before connecting the condensate
trap to the drain pipe, for the proper
gradient of boiler as described in paragraph “1.1.8
POSITIONING AND MINIMAL TECHNICAL SPACES”.
WARNING
Properly connect the siphon condensate
from the boiler to a drain system having adequate
slope. Where possible, you should make this
connection using transparent tubing to check for
proper condensate drainage and avoid stagnation that
could cause hazardous backflow of the condensate
into the boiler.
To connect the condensate drain use only
corrosion-resistant material for the drain line.
CONDENSATE NEUTRALIZER KIT
The condensate neutralization system neutralizes
the condensate created by the products of
combustion.
Acid condensate, introduced into the neutralization
box, follows a two-step set course. First phase:
nitrates and sulphates filtration through active
carbons contained in the first part of the carbon
site pipe. In the second phase the pH rises.
The acidity of the condensate can be controlled
through the use of appropriate tools for the
determination of Ph, such as the litmus paper.
Neutralized condensate can then be routed to the
drainage system.
MAINTENANCE
The pH value of the condensate after the neutralizer
must be in between <5,5 – 9,5>.
Every six months, you need to determine the pH of
the condensate treated in the neutralizer. Litmus
paper or a digital instrument can be used to
measure the pH level.
Neutral point is on the 6,8-7 value; in case of lower
value the condensate is acid, in case of a higher
value it is basic.
If necesssary, replace the active carbon and the
reagent granulate.

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R2K 55 - RAD - ING - Inst.Manual - 2002.1_CSA
1. INSTALLATION
INSTALLER
1.1.14. ANTI-FREEZE PROTECTION
The boiler is protected against freezing using the
electronic board design with a function that start
the burner and heat the water in the boiler when
their water temperature goes below the minimum
pre-set values, protecting the boiler up to an
external temperature of 14 °F (-10 °C).
The device starts when the hot water temperature
goes below 41 °F (5 °C), automatically starting the
burner until the water reaches the temperature of
86 °F (30 °C).
The system starts even if display appears “OFF”,
as long as the boiler is connected to the power (120
V) and gas supply.
For long periods of standby, please empty the
boiler and the plant.
If the temperature goes below 14 °F (-10 °C)
centigrades, please fill the plant with anti-freeze
liquid (CLEANPASS FLUIDO AG cod. 98716LA)
and insert and electrical resistances kit (cod.
82259LP).
DILUTION PERCENTAGE OF CLEANPASS
FLUIDO AG
ANTIFREEZE -
ETHYLENE GLYCOL
TEMPERATURE
FREEZING POINT
(%) VOLUME °F (°C)
20 18 (-7.5)
30 8.6 (-13)
35 -0.4 (-18)
40 -8.5 (- 22.5)
45 -18 (-28)
50 -28 (-33.5)
55 -44 (-42)
60 -58 (-50)
RECOMMENDED MINIMUM PERCENTAGE OF
GLYCOL : 20 %
INSTALLATION