Radiant RBS 20 E Installation Manual

CE

0694 TA05A005.C0604

Technical Specification RADIANT BRUCIATORI S.p.A. Montelabbate (PU) ITALY ENGLISH

INSTALLATION AND
MAINTENANCE MANUAL FOR GAS
FIRED, WALL - HUNG BOILERS

Model RBS 20 E

TYPE C ROOM SEALED

SEDBUK BAND D

User Manual

INDEX

INSTALLATION INSTRUCTIONS AND WARNINGS page 1

TECHNICAL DATA page 4

OVERALL DIMENSIONS - EXHAUST FLUE SYSTEM page 5

GENERAL INSTALLATION REQUIREMENTS page 6

BOILER INSTALLATION page 8

ELECTRICAL CONNECTIONS page 10

BOILER CONTROL PANEL page 11

STARTING UP THE BOILER FOR THE FIRST TIME page 11

REGULATING THE GAS PRESSURE page 13

GAS TYPE CONVERSION page 14

MAIN COMPONENTS page 15

WIRING DIAGRAMS page 17

MAINTENANCE page 18

UNPACKING page 18

FAULT FINDING CHART page 19

SHORT LIST OF COMPONENTS page 20

Installation Manual

COMBI - TA05A005.C0604

1

HEAT TECNOLOGY SINCE 1959

Thank you for choosing RADIANT

Declaration for purposes of Art. 7 of Law 46 of 5 April 1990.

RADIANT BRUCIATORI S.p.A. hereby declares that all of its products are constructed to industry standards as required by the Article in
question and by Article 5 of the law in effect (D.P.R. no. 447/97).

All RADIANT boilers are constructed according to:

• UNI-CIG 7271 (april 1988)

• UNI-CIG 9893 (december 1991 )

• EUROPEAN STANDARD UNI EN 297 Gas-fired central heating boilers - Type B

11

e B

11BS

boilers fitted atmospheric burners of nominal

heat input not exceeding 70 kW;

• EN 483 Gas-fired central heating boilers – Type C boilers of nominal heat input non exceeding 70 kW;

• EUROPEAN STANDARD UNI EN 677 Gas-fired central heating boilers – Specific requirements for condensing boilers with a nominal heat

input not exceeding 70 kW;

• GAS DIRECTIVE 90/396 EEC for CE marking - Appliances burning gaseous fuels

• GAS DIRECTIVE 73/23/EEC - Low voltage

• GAS DIRECTIVE 89/336/EEC - Electromagnetic compatibility

• GAS DIRECTIVE 92/42/ECC requirements for new hot-water boilers fired with liquid or gaseous fuels

All RADIANT boilers are constructed according to UNI - CIG (EC) norms. The materials used, such as copper, brass, and stainless steel form
a compact, homogeneous, highly functional unit that is easy to install and simple to operate. The wall-mounted boiler is equipped with all of the
approved accessories required to make it a true, independent heating plant for home heating and for the production of hot water for domestic
needs. All boilers are fully inspected, and come with a certificate of quality signed by the inspector and with a warranty certificate. This booklet
must be read carefully and stored in a safe place, accompanying the boiler at all times.

RADIANT BRUCIATORI S.p.A. declines any and all responsibility for misinterpretations of this booklet deriving from any translations
of same.

RADIANT BRUCIATORI S.p.A. will not be responsible for non-observance of the instructions contained in this booklet or for the
consequences of any action not specifically described herein.

Installation Manual

COMBI - TA05A005.C0604

2

INSTALLATION INSTRUCTIONS - WARNINGS

THIS INSTALLATION, USE, AND MAINTENANCE MANUAL IS AN ESSENTIAL AND INTEGRAL PART OF THE PRODUCT, AND MUST
ALWAYS BE KEPT NEAR THE DEVICE.
THE WARNINGS CONTAINED IN THIS SECTION ARE ADDRESSED BOTH TO THE USER AND TO INSTALLATION AND MAINTENANCE
PERSONNEL.
THE USER WILL FIND INFORMATION ON OPERATION AND LIMITS OF USE IN THE ACCOMPANYING MANUAL, WHICH SHOULD BE
READ VERY CAREFULLY.
STORE THE MANUAL CAREFULLY FOR FUTURE REFERENCE.

1) GENERAL WARNINGS
INSTALLATION MUST BE PERFORMED IN OBSERVANCE OF CURRENT NORMS, ACCORDING TO THE CONSTRUCTOR’S

INSTRUCTIONS, AND BY PROFESSIONALLY QUALIFIED PERSONNEL.
THE INSTALLATION INSTRUCTIONS MANUAL MUST BE ALWAYS ACCOMPANY THE BOILER.
PROFESSIONALLY QUALIFIED PERSONNEL ARE THOSE HAVING TECHNICAL COMPETENCE IN THE SECTOR OF APPLICATION

OF THE DEVICE (CIVIL OR INDUSTRIAL), AND, IN PARTICULAR, THE CONSTRUCTOR’S AUTHORISED SERVICE CENTRES.
INCORRECT INSTALLATION MAY CAUSE DAMAGE TO PERSONS, ANIMALS, OR PROPERTY, FOR WHICH THE CONSTRUCTOR

ASSUMES NO LIABILITY.

• After completely removing the packing, make sure that the contents are in perfect condition.

• In case of doubt, do not use the equipment. Consult the supplier.

• Packing materials (cardboard carton, wooden crate, nails, clips, plastic bags, polystyrene, etc.) are potentially dangerous and must be

kept away from children.

• Before performing any cleaning or maintenance operation, turn off the unit by means of the mains switch and/or by means of the

appropriate cut-off devices.

• Do not block the air intake or heat dissipation grates.

• In the event of breakdown and/or poor functioning of the device, turn it off and do not attempt to repair it or take any direct action. Refer to

professionally qualified personnel only.

• Any repairs must be performed exclusively by a service centre authorised by the constructor, and with original spare parts only.

• Non-observance of the above instruction may compromise the safety of the device. To guarantee efficient and correct operation, the

device should undergo period maintenance by professionally qualified personnel according to the constructor’s instructions.

• Whenever the device is to be put out of service, secure all potentially hazardous parts to prevent accidents or damage.

• If the device is sold or transferred to another owner, or if you move and leave the boiler, make sure that this booklet stays with the boiler

so that it may be consulted by the new owner and/or by the installer.

• Use only original spare parts for all devices with optionals or kits (including electrical ones).

WARNING: this device must be used for its intended purpose, i.e., heating and production of domestic hot water. Any other use is improper
and therefore dangerous. The constructor will have no contractual or extracontractual liability for damage caused by incorrect installation
and/or use or by non-observance of instructions supplied by the constructor.

This device must be used exclusively with a sealed central heating system equipped with an expansion vessel.

2) WARNINGS REGARDING INSTALLATION

Warranty expires 12 months from date of installation and in all cases no later than 18 months from date of construction. First start-up
must be performed by authorised personnel only. For any operation on the hydraulic, gas, or electrical circuit regarding the heating unit, refer
to authorised technicians only and use original spare parts only. Wall-mounted boilers are not to be installed in damp rooms, and must be
protected against sprays or jets of water or other liquids to prevent malfunctions of the electrical and heating devices. They must not be
exposed to direct steam from cookers, and nothing must be placed on top of them. This heating unit has been constructed to heat the home
and to produce hot water. The constructor declines all responsibility for incorrect installation and/or use of the device. Do not leave the
device on when it is not being used: close the gas cock and turn off the mains switch. If you smell gas in the room in which the device is
installed, do not operate any electrical switches, telephones, or any other device that might cause a spark. Immediately open doors and
windows to create an air current to clear the room. Close the main gas cock (at the meter) or the cylinder cock, and request immediate
technical service.

Do not tamper with the device.

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COMBI - TA05A005.C0604

3

SYSTEMS WITH THERMOSTATS

A by-pass must be installed in heating systems with radiators thermostats.
As required by current norms, these devices must be installed by qualified personnel only, who must respect norms UNI-CIG 7129 and 7131
and revisions, fire department regulations, and requirements of the local gas company. Before installing the boiler, make sure that the water
and heating systems are compatible with its output. The room must be properly ventilated by means of an air intake (see UNI 7129/01).
The air intake must be at floor level open flue only, at a point where it cannot be obstructed, and protected by a grate that does not reduce the
useful section of flow.
The use of air flows from adjacent rooms is permitted as long as such rooms are in depression with respect to the outside and as long as there
are no wood-burning fireplaces or fans installed there. If the boiler is to be installed externally (for example, on balconies or terraces), make
sure that it is protected against atmospheric agents to prevent damage to components and voiding of the warranty. In such cases we
recommend building a heat compartment to protect the boiler against inclement weather.
Check the technical data on the packing and on the plate located inside the front casing. Check that the burner is suitable for use with the
type of gas available.
Make sure that all pipes and connections are perfectly sealed and that there are no gas leaks.
All pipework should be chemically flushed to remove any residues that might negative effect the operation of the boiler.

3) GENERAL WARNINGS BASED ON TYPE OF POWER SUPPLY

POWER SUPPLY
Electrical safety is achieved only when the device is correctly and efficiently earthed as per current safety norms (IEC 64-8 Electrical Part).

• This fundamental safety requirement must be checked. In case of doubt, request a check of the electrical system by professionally

qualified personnel. The constructor will not be liable for any damage caused by lack of or improper earthing of the system.

• Have professionally qualified personnel check that the electrical system is adequate for the maximum absorbed power of the device

(indicated on the plate). In particular, make sure that the section of the system wires is suitable for the maximum absorbed power of the
device.

• Do not use adapters, multiple sockets, and/or extension cords to power the device from the electrical mains.

• Provide a unipolar switch as required by current safety regulations to connect the device to the mains.

• The use of any electrical device requires the observance of some fundamental rules, such as:

• do not touch the device with wet or damp parts of the body and/or with bare feet

• do not pull on electrical cables

• do not expose the device to atmospheric agents (rain, sun, etc.) unless specifically provided for

• do not allow the device to be used by children or anyone unfamiliar with its operation

• The power cable must not be replaced by the user.

• If the cable becomes damaged, turn off the device and have the cable replaced by professionally qualified personnel only.

If you decide not to use the device for an extended length of time, turn off the mains switch that feeds all components of the system using
electrical energy (pumps, burner, etc.).

Installation Manual

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4

TECHNICAL DATA

Type C device

Type C devices are devices in which the combustion circuit (air intake, combustion chamber, exchanger, combustion exhaust) is sealed off from the place
where they are installed.

CENTRAL HEATING – D.H.W.
room sealed circuit type
mod. RBS 20 E

MODEL

RBS 20 E

CE certification no. 0694BL3037
Flue category (UNI10642) C

12 C32

C42 C

52 C82

Maximum rated input kcal/h 22876
kW 26.6
BTU/hr 90812
Minimum rated input kcal/h 9890
kW 11.5

BTU/hr 39261
Maximum working output kcal/h 21229
kW 24.68
BTU/hr 84274
Minimum working output kcal/h 8213
kW 9.55
BTU/hr 32602
100% output efficiency

%

92.80

30% output efficiency

%

89.30

GAS DIRECTIVE 92/42/ECC

stars

2

NOx class (European Standard UNI EN 297 – pr A5)

class

2
Max. heating temperature °C 35-80
Max. working pressure (heating) bar 3
Min. working pressure (heating) bar 0.3
Expansion vessel capacity (initial pressure 1 bar) litres 6
Max. working pressure (water) bar 6
Min. working pressure (water) bar 0.5
Hot water flow rate Dt 30° litres 11.79
Width mm. 450
Height mm. 790
Depth mm. 320
Weight kg. 44
Coaxial exhaust flue diameter kit A (max. flue lenght)

Ø (m) 100/60 (3.5)

Double exhaust flue diameter kit B (max. flue lenght)

Ø (m) 80/80 (30)

Double exhaust flue diameter kit C (max. flue lenght)

Ø (m) 118/80 (3.5)
Flow/return connections Ø ¾”-¾”
Cold water connections Ø ½”
Hot water connections Ø ½
Gas connections Ø ½”
Electrical connection 50 Hz V 230
Power supply W 150
Burner jets NP 13 G20 Ø 1.25
Burner jets NP 13 G30 Ø 0.75

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5

OVERALL DIMENSIONS - EXHAUST FLUE SYSTEM

TYPE C WALL-MOUNTED BOILERS

SEALED COMBUSTION CIRCUIT:

Kit A.
Horizontal coaxial exhaust flue system with 360°
rotation.

It allows the flue exhaust and the air intake directly to
an external wall. .

N.B.: To insert a bend in the flue, reduce total flue
length by 0.8 m.

Kit B.
Double exhaust/emission twin flue system with
360° rotation.

It allows the flue exhaust into a flue duct and the air
intake directly from an external wall.
N.B.: To insert a bend in the flue, reduce total flue
length by 1.5 m.

R RETURN ¾”
C HOT WATER 1/2"
G GAS 1/2"
F COLD WATER 1/2"
A HEATING FLOW ¾”

NOTE: USE ORIGINAL RADIANT APPROVED FLUE KIT

SYSTEMS, FLUE ACCESSORIES AND FLUE
DIAPHRAGMS ONLY. APPROVED RADIANT FLUE
DIAPHRAGMS AND ADJUSTMENT TABLES ARE
SUPPLIED WITH RADIANT ORIGINAL FLUE KIT
SYSTEMS.

47102807873 70

AFGRC

CRGFA

7073 78 80 102

47

47

102807873 70

AFGR C

125

320

125

320

85 280 85

756

85 280 85

756

8528085

756

185

790

790

182

870

790

60

894

790

100

924

790

182

320

125

80

947

790

=

450

=

Ø130

=

450

=

100

60

80

120

80