Fondital ITACA RTFS 24 Bedienungsanleitung

DIDACTIC MANUAL

FAMILY: Wall-hung boilers

GROUP: Instantaneous type and

forced draught heating

only

MODELS: Itaca

VERSIONS: For indoor

and outdoor installation

PART NO.: AST 14 C 255/00

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1st Edition, January 2013

ENGLISH

________________________________________________________________________________

2 AST 14 C 255/00

Contents

SECTION 01

TECHNICAL CHARACTERISTICS

1.1 – Models

1.2 – Overall Dimensions

1.3 – Technical Specifications ___________________Page 04

SECTION 02

TOUCH SCREEN CONTROL PANEL AND DIAGNOSTICS

2.1 – User's Interface

2.2 – LCD

2.3 – Boiler Status and Fault Codes ___________________Page 10

SECTION 03

HYDRAULIC DIAGRAMS AND COMPONENTS

3.1 – Hydraulic Diagrams

3.2 – Hydraulic Unit

3.3 – Expansion tank

3.4 – Heat exchangers

3.5 – Gas valve

3.6 – Flue gas fan ___________________Page 19

SECTION 04

GAS SETTING AND PARAMETERS

4.1 – Gas Valve Setting

4.2 – Flue Cleaning Function

4.3 – Gas Conversion

4.4 – Parameters ___________________Page 29

SECTION 05

OPERATING LOGIC

5.1 – Main General Characteristics ___________________Page 41

SECTION 06

ELECTRICAL SYSTEM

6.1 – Electronic Board

6.2 – Outer terminal box electrical connections

6.3 – Wiring Diagram ___________________Page 84

SECTION 07

VENT DUCTS AND PIPES

7.1 – 100/60 Co-axial Air/Vent Ducts

7.2 – 80/80 Split Air/Vent Ducts

___________________Page 87

TABLE OF TECHNICAL FAULTS

___________________Page 92

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3 AST 14 C 255/00

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4 AST 14 C 255/00

SECT. 1

TECHNICAL CHARACTERISTICS

1.1 MODELS

ITACA RTFS 24 - 28

ITACA CTFS 24 - 28 - 32

ITACA CTFS 24 - 28 - 32 for outdoor installation

ABBREVIATION KEY:

R: heating only

C: combi

TFS: forced draught

MAIN CHARACTERISTICS :

ITACA RTFS 24 - 28:

atmospheric boiler for indoor installation, heating only, sealed chamber, forced draught, mono-

thermal.

ITACA CTFS 24 - 28 - 32:

atmospheric boiler for indoor installation, combined instantaneous, with production of domestic hot

water + heating, sealed chamber, forced draught, mono-thermal with plate exchanger;

ITACA CTFS 24 - 28 - 32 for outdoor installation:

atmospheric boiler for indoor installation, combined instantaneous, with production of domestic hot

water + heating, sealed chamber, forced draught, mono-thermal with plate exchanger;

1.2 OVERALL DIMENSIONS

Height H = 750 mm

Width L = 420 mm

Depth D = 315 mm

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5 AST 14 C 255/00

RTFS and CTFS VERSIONS

GGas inlet (1/2”)

MCH system flow (3/4”)

RCH system return (3/4”)

AF Cold water inlet (1/2”)

AC Domestic hot water outlet (1/2”) only for CTFS

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6 AST 14 C 255/00

INSTALLATION TEMPLATE

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7 AST 14 C 255/00

1.3 TECHNICAL SPECIFICATIONS

General Characteristics

RTFS CTFS

24 kW 28 kW 24 kW 28 kW 32 kW

Operating parameters

Equipment category II2H3+

Burner nozzles no. 11 13 11 13 15

CH circuit max. and min. pressure bar 3 - 0.5

DHW circuit max. and min. pressure (KC) bar - 6 - 0.5

DHW specific flow rate t 30°C l/min - 11.6 14.2 15.1

Double flow probe triggering temperature OFF °C 105

Double flow probe triggering temperature ON °C 90

Standard central heating setting range °C 35 ÷ 78

Standard max. operating temperature range °C 78 + 5

Reduced central heating setting range °C 35 ÷ 45

Reduced max. working temperature range °C 45 + 2

Plate DHW setting range °C - 35 ÷ 57

Plate maximum DHW operating temperature °C - 57 + 5

Boiler DHW setting range °C 35 ÷ 65 -

Nominal capacity of expansion tank l 7

Maximum recommended system capacity (**) l 150

Nominal electrical data

Power supply: Voltage/Frequency V / Hz 230-50

Power mains supply fuse A 2

Electric cabinet protection degree IP X5D

Max. absorbed power W 122 134 122 134 134

Electric power in standby condition W 2.3

Overall dimensions and connections

Height mm 750

Width mm 420

Depth mm 315

Gas connection - G ½

Flow and return connection - G ¾

Cold water and hot domestic water connection / boiler - G ½

Net weight Kg 26 33.5 28 35.5 35.5

Consumptions at maximum flow rate

Natural gas consumption (*) m3/h 2.72 2.70 2.72 2.70 3.23

Butane gas consumption kg/h 2.02 2.01 2.02 2.01 2.40

Propane gas consumption (LPG) kg/h 1.99 1.98 1.99 1.98 2.36

Operating characteristics

Type of ignition - Electronic

Flame surveillance - Ionisation

Type of detection - Non-polarised

(*) Value related to 15°C - 1013 mbar condition

(**) Maximum water temperature at 83°C, vessel preloaded at 1 bar.

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8 AST 14 C 255/00

Design data and chimney sizing

RTFS - CTFS 24

Pmax. Pmin. Load at 30 %

Casing heat loss with burner off % 0.26 -

Casing heat loss with burner on % 1.05 0.63 -

Flue system heat loss with burner on % 5.97 10.37 -

Flue system mass capacity g/s 15.44 16.38 -

Flue gas temp. – air temp. °C 95 77 -

Residual head available Pa 105 105 -

CO2value % 6.6 2.9 -

Heat output efficiency rating (60/80°C) % 93.0 89.0 90.2

Heat output efficiency rating (30/50°C) % - - -

Efficiency rating

(according to 92/42/EC) - ★★★

Nox emission class - 2

RTFS - CTFS 28

Pmax. Pmin. Load at 30 %

Casing heat loss with burner off % 0.2 -

Casing heat loss with burner on % 0.76 1.01 -

Flue system heat loss with burner on % 5.54 10.09 -

Flue system mass capacity g/s 17.29 17.75 -

Flue gas temp. – air temp. °C 101 87 -

Residual head available Pa 70 70 -

CO2value % 7.1 2.9 -

Heat output efficiency rating (60/80°C) % 93.7 88.9 90.6

Heat output efficiency rating (30/50°C) % - - -

Efficiency rating

(according to 92/42/EC) - ★★★

Nox emission class - 2

CTFS 32

Pmax. Pmin. Load at 30 %

Casing heat loss with burner off % 0.2 -

Casing heat loss with burner on % 1.37 1.40 -

Flue system heat loss with burner on % 5.23 9.20 -

Flue system mass capacity g/s 17.8 19.7 -

Flue gas temp. – air temp. °C 105 73 -

Residual head available Pa 78 78 -

CO2value % 7.5 3.1 -

Heat output efficiency rating (60/80°C) % 93.4 89.4 91.0

Heat output efficiency rating (30/50°C) % - - -

Efficiency rating

(according to 92/42/EC) - ★★★

Nox emission class - 2

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9 AST 14 C 255/00

Settings

RTFS - CTFS 24

Heat

output Heat Output

MIN-MAX Supply

pressure Nozzle

Diameter Burner pressure

MIN-MAX

(kW) (kW) (mbar) (mm) (mbar)

Natural gas

G20 25.5 11.1 – 23.7 20 1.35 3.2 – 12.2

butane gas

G30 25.5 11.1 – 23.7 29 0.78 7.5 – 28.3

propane gas

G31 25.5 11.1 – 23.7 37 0.78 7.6 – 34.2

RTFS - CTFS 28

Heat

output Heat Output

MIN-MAX Supply

pressure Nozzle

Diameter Burner pressure

MIN-MAX

(kW) (kW) (mbar) (mm) (mbar)

Natural gas

G20 30.5 12.0 – 28.6 20 1.35 2.7 – 12.4

butane gas

G30 30.5 12.0 – 28.6 29 0.78 6.0 – 29.3

propane gas

G31 30.5 12.0 – 28.6 37 0.78 8.1 – 36.3

CTFS 32

Heat

output Heat Output

MIN-MAX Supply

pressure Nozzle

Diameter Burner pressure

MIN-MAX

(kW) (kW) (mbar) (mm) (mbar)

Natural gas

G20 33.0 14.3 – 30.8 20 1.35 2.84 – 11.11

butane gas

G30 33.0 14.3 – 30.8 29 0.77 7.1 – 28.7

propane gas

G31 33.0 14.3 – 30.8 37 0.77 9.5 – 35.3

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10 AST 14 C 255/00

SECT. 2

TOUCH SCREEN CONTROL PANEL AND DIAGNOSTICS

2.1 USER'S INTERFACE

The interface features a capacitive keyboard to access the setting by simply touching the

keys on the interface key-area. This is the only way to enable back-lighting (keys + LCD)

and access the various functions. Only "active" keys will be backlit, thus guiding the user

to proper use.

One minute after the last key has been touched, interface is disabled and back-lighting is

turned off.

NB: back-lighting has different operating modes which can be enabled by means of

parameter P78 (default 0), depending on the needs:

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