Radiant R1K 34, R1K 34B Installation, Use And Maintenance Manual

R1K 34 /B - RAD - ING - Manuale - 1512.2_CSA_TTS

Installation, Use
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 loss of life.

-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 suppl ier fr om an out side phone. F ollow the ga s supplier ’s instructio ns.
>If you cannot reach your gas supplier, call the fire department.

-Installation and service must be performed by a qualified installer, service agency or the gas supplier.

R1K 34 /B

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SUMMARY

SUMMARY

INTRODUCTION 4

1. INSTALLER SECTION 7

1.1. INSTALL ATION 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. PIPING LAYOUT/IDENTIFICATION 11

1.1.7. HYDRAULIC CONNECTION KIT 11

1.1.8. POSITIONING AND CLEARANCES TO COMBUSTIBLE MATERIAL AND SERVICE CLEARANCES 12

1.1.9. CIRCULATOR PERFORMANCE CURVES 13

1.1.10. WAT ER CONNECT ION S 14

1.1.11. PRESSURE RELIEF VALVE KIT 15

1.1.12. SYSTEM FILLING 16

1.1.13. FILLING THE CONDENSATE COLLECTION SIPHON 17

1.1.14. ANTI-FREEZE PROTECTION 19

1.1.15. GA S CONNEC TION 20

1.1.16. ELECTRICAL CONNECTION 20

1.1.17. POW ER SUP PLY 21

1.1.18. OPTIONAL ELECTRICAL CONNECTIONS 22

1.1.19. DHW SENSOR INSTALL ATION 24

1.1.20. VENTING 25

1.1.21. TYPES OF EXHAUST SYSTEMS 27

1.1.22. TABLE 1: ALLOWABLE VENT LENGTHS 32

2. SEZIONE CENTRO ASSISTENZA 33

2.1. FIRST START-UP 34

2.1.1. PRELIMINARY OPERATIONS FOR FIRST START-UP 34

2.1.2. BOILER COMMISSIONING 35

2.1.3. CO2 VALUE CHECK AND CALIBRATION 36

2.1.4. ACCESSING AND PROGRAMMING THE PARAMETERS 37

2.1.5. DIGITECH CS (MIAH402) PARAMETERS TABLE 39

2.1.6. COMBUSTION BLOWER FREQUENCY/HEAT CAPACITY DIAGRAM 45

2.2. MAINTENANCE 46

2.2.7. GENERAL MAINTENANCE WARNINGS 46

2.2.8. TECHNICAL DATA 47

2.2.9. TECHNICAL ASSEMBLYTECHNICAL ASSEMBLY 49

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SUMMARY

2.2.10. INTERNAL PIPING SCHEMATIC 50

2.2.11. 3-WAY VALVE OPERATION 51

2.2.12. WIRING DIAGRAM 52

2.2.13. ACCESSING THE BOILER 53

2.2.14. ACCESSING THE ELECTRONIC BOARD 54

2.2.15. SYSTEM EMPTYING 55

2.2.16. FAULT SIGNALLING CODES 56

2.2.17. ACTIVE FUNCTIONS SIGNALLING CODES 59

2.2.18. CONVERSION TO A DIFFERENT GAS TYPE 60

2.2.19. POSITIONS OF THE ELECTRODES 61

3. USER SECTION 63

3.1. USE 64

3.1.1. GENERAL USE WARNINGS 64

3.1.2. CONTROL PANEL 69

3.1.3. DISPLAY ICONS 70

3.1.4. INFO MENU DISPLAY DATA 71

3.1.5. START-UP 72

3.1.6. OPERATING MODE 72

3.1.7. INFORMATIONAL NOTE ON ANTI-FREEZE FUNCTION 73

3.1.8. SYSTEM FILLING 74

3.1.9. FAULT SIGNALLING CODES 75

3.1.10. ACTIVE FUNCTIONS SIGNALLING CODES 77

3.1.11. MAINTENANCE 78

3.1.12. COV ER CLE ANING 78

3.1.13. DISPOS AL 78

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2.

INTRODUCTION

WARNING

Before star ting any operation it is mandator y 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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2.

MANUFACTURER WARRANTY AND
RESPONSIBILIT Y

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 Z21.13-2014 • CSA 4.9-2014 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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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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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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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

fig. 1

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1. INSTALLATION

INSTALLER

1.1.5. OVERALL DIMENSIONS (inch)

1.1.6. PIPING LAYOUT/IDENTIFICATION 1.1.7. HYDRAULIC CONNECTION KIT

An hydraulic kit equipped is available and supplied
by RADIANT upon demand.

11.8

6.1

5.3

5.9

12.9

16

25.2

1.9 5.8 3.1 4 1.2

5.7 6.9

1.6

4.2

R

RB

G F A

AB

3.4

VS

R F

A

fig. 2

fig. 3

fig. 4

R- RETURN Ø 3/4

G- GAS Ø 3/4 NPT

F- COLD Ø 1/2

A- INFEED Ø 3/4

RB- REMOT E D.H.W. CYLINDER RETURN Ø 3/4 NPT

AB- REMOTE D.H.W. CYLINDER FLOW Ø 3/4 NPT

R - CENTRAL HEATING RETURN Ø 3/4 NPT
F - COLD WATER INLET Ø 1/2 SWEAT
A - CENTRAL HEATING SUPPLY Ø 3/4 NPT

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1. INSTALLATION

INSTALLER

1.1.8. 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 boiler to completed masonry
structure.
To position the unit, proceed as follows (see fig. 6):

1. Trace a line using a spirit level (min. length 9.8 inch) on the installation wall.

2. Place the top of the jig along the traced line respecting the distances of the water connections; then

mark the two points to insert the fasteners, then trace the points for the exhaust vent;

3. Remove the jig and drill the wall;

4. Fix the wall bracket using the screws provided. Hang the unit on the bracket.

3

1

42

70 80 10249 3178

Ø80

Ø125

Ø100

35826 26

54 54

821

681

699

302

785

H

B

A

Y

X

A - 7.8 inch
B - 11.8 inch
X - 2.3 inch

Y - 2.3 inch

H - 36 inch

fig. 5

fig. 6

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1. INSTALLATION

INSTALLER

WARNING

Using a level, make sure the boiler is
properly level (see fig. 6) to allow the condensate to
drain.

1.1.9. CIRCULATOR PERFORMANCE CURVES

fig. 7

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

PRE VALENCE (m)

FLOW RATE US gpm

III

Circulator priority maximum speed

- - - - Appliance Loss fig. 8

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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
boi ler.

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.

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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. 9) 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

R F

A

fig. 9

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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. 10) 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. 12) to release the air form the top of the
system;

4. Open the feeding tap “R” (fig. 11);

5. Release all the air;

6. Use pressure gauge “M” (fig. 11) to make sure

that the system pressure reaches 1.2 bar (fig.

13);

7. After performing this operation, make sure

that the loading tap “R” (fig. 12) is properly
closed.

1

2

M

R

fig. 10

fig . 11

fig. 12

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1. INSTALLATION

INSTALLER

8. Unscrew the circulator cap (2-fig.10) 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. 13)

1.1.13. FILLING THE CONDENSATE

COLLECTION SIPHON

Before starting the boiler you have to fill the
condensate collection siphon in order to avoid fuel
back up through the siphon.

Fill the condensate collection siphon as follows
(see fig. 14):

› 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 fir st 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. 13

fig. 14

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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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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. 65-

00200).

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 %

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1. INSTALLATION

INSTALLER

1.1.15. GAS CONNECTION

WARNING

The gas piping must be installed according
to all local and state codes, or in absence of local and
state codes, with the latest “Natural gas and propane
installation code”, CAN/CSA-B 149.1 or “National
Fuel Gas Code”, ANSI Z223.1 (NFPA 54). Consult
the “Natural gas and propane installation code” or
“National Fuel Gas Code” for the recommended gas
pipe size of other materials.

BEFORE PERFORMING THE GAS CONNECTION,
MAKE SURE THAT:

› The gas line size and length meets requested;

› The gas line is equipped with all safety and

control devices required by the standards in
force;

› The internal and external seals of the gas inlet

lines of the plant are checked;

› The device is suitable for use with the type of

gas available by checking the boiler data plate
(located on the inner side of the front casing. If
they do not match you must take the necessary
measures to adapt the boiler to another type of
gas (see 2.2.18 CONVERSION TO A DIFFERENT
GAS TYPE);

› The gas supply pressure falls within the values

indicated on the data plate.

1.1.16. ELECTRICAL CONNECTION

DANGER

The equipment is electrically safe only
if it is properly connected to an efficient grounding
system, performed in compliance with the safety
standards in force (National Electrical Code, ANSI/
NFPA 70 and or the Canadian Electrical Code Part
I, CSA C22.1, Electrical Code). You should check this
essential safety requirement. If in doubt, request an
accurate check of the electrical system performed by
qualified staff, as the manufacturer is not responsible
for any damages caused by lack of grounding system.

› Make sure that the electrical systems is

suitable for the maximum power consumed by
the equipment, value indicated on the data plate.

› Make sure that the cables section is appropriate

for the maximum power consumed by the
equipment.

› The equipment works with alternating current

of 120 V and 60 Hz. The electrical connection
must be installed using an all-pole switch with
an opening of at least 0.12 in (3 mm) between
contacts placed upstream from the device.

WARNING

Make sure that the phase and neutral
cables connection is installed in compliance with the
wiring diagram (see 1.1.17 POWER SUPPLY).

WARNING

It is strictly forbidden to use adaptors,
multiple plugs and/or extensions for the general
power supply of the equipment from the electrical
supply.

21

R1K 34 /B - RAD - ING - Manuale - 1512.2_CSA_TTS

1. INSTALLATION

INSTALLER

1.1.17. POWER SUPPLY

To power the boiler connect the electrical cables
to the terminal inside the control panel as follows:

DANGER

Cut off the voltage from the main switch.

› remove the boiler's front casing (refer to 2.2.13

ACCESSING THE BOILER).

› loosen the two screws and remove the plate “A”

(see fig. 15).

› after removing the plate, connect the electrical

cables to terminal “B” (see fig. 15):

· the yellow/green cable to the terminal marked
with grounding symbol “ ”.

· the blue cable to the terminal marked with
“N”.

· the brown cable to the terminal marked with
“ L”.

After performing these operations, remount plate
“A” and the front casing.

Note: A 3-prong plug is provide with every unit and
the above wiring has been performed.

L

N

SeSe

A

TaTa

B

fig. 15

WHITE
YELLOW/GREEN

BLACK

22

R1K 34 /B - RAD - ING - Manuale - 1512.2_CSA_TTS

1. INSTALLATION

INSTALLER

1.1.18. OPTIONAL ELECTRICAL

CONNECTIONS

The cables should be inserted inside the boiler
using the cable glands ‘P1’ and ‘P2’ placed under
the board (see fig. 16). Make a hole on the cable
gland, smaller than the cable diameter, to make
sure that the air cannot pass through.

To wire the options below:

• (SE) EXTERNAL TEMPERATURE PROBE COD.
73518L A

• (TA) ENVIRONMENT THERMOSTAT

• (CR) REMOTE CONTROL OPEN THERM COD. 40­00017

use the terminal placed inside the control panel
as follows:

DANGER

Shutoff the voltage from the main switch.

› Remove the front casing of the boiler (see 2.2.13

ACCESSING THE BOILER); unscrew the screws
and remove plate “A” (see fig. 16-B).

› After removing the plate, connect the electrical

cables to terminal “B” (see fig. 16-B):

· For the external temperature Probe connect
the two non-polarized conductors to the Se­Se contacts.

· For the environment Thermostat or Remote
control, first remove the bridge on the Ta­Ta contacts and then connect the two non­polarized conductors to the Ta-Ta contacts.

After performing these operations, remount plate
“A” and the front casing.

NB: In case of simultaneous presence of external probe and

remote control, the modulation board only sends the external

temperature value to the remote device without using it for

modulation.

The communication between board and remote control takes

place independently from the boiler’s operating mode and after

establishing the connection, the used interface on the board is

disabled and the display shows the symbol ‘ ’.

P1 P2

L

N

SeSe

A

TaTa

B

SE

TA

CR

fig. 16-B

fig. 16

23

R1K 34 /B - RAD - ING - Manuale - 1512.2_CSA_TTS

1. INSTALLATION

INSTALLER

To wire the options below:

• (PM) MODULATING PUMP

• (TP) DOMESTIC HOT WATER PRE-HEATING
DEACTIVATION TIMER

• (CT) TELEPHONE DIALER

• BUS 0-10V

• (SVZ) CONTROL BOARD FOR AREA VALVES
CONNECTED TO A REMOTE CONTROL COD. 65­00030

Use the electronic board placed inside the control
panel as follows:

DANGER

Shutoff the voltage from the main switch.

› Remove the boiler's front casing (refer to 2.2.13

ACCESSING THE BOILER).

› Remove the crankcase of the control panel (see

2.2.14 ACCESSING THE ELECTRONIC BOARD).

› After removing the crankcase, connect the

items below to the electronic board (see fig. 17):

After performing these operations, remount the
crankcase and the front casing.

TP

CT

BUS 0-10V

GND

BUS+

11

10

98

7

12

13

14
15

16
17

M12

M9

M7

M5

M2

M4

M8

M10

M15

M16

1

2

3

4

57

61
60
59
58

4443424140

39

38

3736353433

32

31

30

29

28

27

26

MIAH4

bl

br

PM

SR

62

63

64

65

66

67

68

51

52

53

54

55

56

5

6

M13

M14

o

o

bk

bk

bl

br

120 V - 60 Hz

L

N

VZR

VZ2 VZ1

FC FC

TAZ 2

TAZ 1

SRB

N

1
2
3

4
5
6

9 8

7

M1

M4

M2

M3

SVZ

L

gy

o

r

bk

COD.40-00133

fig. 17

SR: RETURN PROBE FC: AREA VALVES LIMIT SWITCH

SRB: REMOTE LED FOR SIGNALLING BOILER LOCKOUT GY: G RE Y

TAZ1: ENVIRONMENT THERMOSTAT AREA 1 O: ORANGE

TAZ 2: ENVIRONMENT THERMOSTAT ARE A 2 BK: BLACK

VZ1: AREA 1 VALVE BR: BROWN

VZ2: ARE A 2 VALVE BL: LIGHT BLUE

VZR: REMOTE CONTROLLED AREA VALVE R: RED

24

R1K 34 /B - RAD - ING - Manuale - 1512.2_CSA_TTS

1. INSTALLATION

INSTALLER

1.1.19. DHW SENSOR INSTALLATION

To install the DHW sensor inside the remote water
tank, please proceed as follows:

Remove the boiler front case panel (see Paragraph
ACCESSING THE BOILER);

Grasp the left and right control panel support
brackets and pull them outwards, at the same
time rotating the panel downwards;

Take the 8 m. length DHW sensor cable (see
C-figure), located onto the boiler bottom plate,
and insert the sensor inside the water tank sensor
holder.

Once this operation has been completed, rotate
the control panel upwards and install the front
case panel back to its original position.

C