De Dietrich MS 24 MI – страница 4

24 MI

ELETTRODO DI

RIVELAZIONE/ACCENSIONE

CG_2076 / 1001_1807

TERMOSTATO

VALVOLA TRE VIE

POMPA

SENSORE PRECEDENZA

SANITARIO

SONDA NTC SAN.

SONDA

ESTERNA

PRESSOSTATO IDRAULICO

TERMOSTATO DI

SICUREZZA

TERMOSTATO FUMI

SONDA NTC RISC.

PROGRAMMAZIONE

Colore cavetti

C = Celeste

M = Marrone

N = Nero

R = Rosso

G/V = Giallo/Verde

B = Bianco

V = Verde

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24 FF

ELETTRODO DI

RIVELAZIONE/ACCENSIONE

CG_2271 / 1006_1603

TERMOSTATO

VALVOLA TRE VIE

POMPA

VENTILATORE

MORSETTIERA M2

SONDA

ESTERNA

PRESSOSTATO IDRAULICO

TERMOSTATO DI

SICUREZZA

PRESSOSTATO ARIA

SONDA NTC RISC.

PROGRAMMAZIONE

Colore cavetti

C = Celeste

M = Marrone

N = Nero

R = Rosso

G/V = Giallo/Verde

B = Bianco

V = Verde

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24

ELETTRODO DI

RIVELAZIONE/ACCENSIONE

CG_2272 / 1010_2101

TERMOSTATO

VALVOLA TRE VIE

POMPA

MORSETTIERA M2

SONDA

ESTERNA

PRESSOSTATO IDRAULICO

TERMOSTATO DI

SICUREZZA

TERMOSTATO FUMI

SONDA NTC RISC.

PROGRAMMAZIONE

Colore cavetti

C = Celeste

M = Marrone

N = Nero

R = Rosso

G/V = Giallo/Verde

B = Bianco

V = Verde

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35. CARATTERISTICHE TECNICHE

Modello MS 24 MI FF 24 FF 24 MI 24

Categoria II2H3P

II2H3P

II2H3P II2H3P

Portata termica nominale kW 25,8 25,8 26,3 26,3

Portata termica ridotta kW 10,6 10,6 10,6 10,6

Potenza termica nominale kW 24 24 24 24

kcal/h 20.600 20.600 20.600 20.600

Potenza termica ridotta kW 9,3 9,3 9,3 9,3

kcal/h 8.000 8.000 8.000 8.000

Rendimento secondo la direttiva 92/42/CEE — ★★★ ★★★ ★★ ★★

Pressione massima acqua circuito termico bar 3 3 3 3

Capacità vaso espansione l 6 6 6 6

Pressione del vaso d’espansione bar 1 1 1 1

Pressione massima acqua circuito sanitario bar 8 — 8 —

Pressione minima dinamica acqua circuito sanitario bar 0,15 — 0,15 —

Portata minima acqua sanitaria l/min 2,0 — 2,0 —

Produzione acqua sanitaria con ∆T=25 °C l/min 13,7 — 13,7 —

Produzione acqua sanitaria con ∆T=35 °C l/min 9,8 — 9,8 —

Portata specica (*) l/min 12 — 12 —

Range temperatura circuito di riscaldamento °C 30/85 30/85 30/85 30/85

Range temperatura acqua sanitaria °C 35/60 35/60*** 35/60 35/60***

Tipo — C12-C32-C42-C52-C82-B22

B

B

11BS

11BS

Diametro condotto di scarico concentrico mm 60 60 - -

Diametro condotto di aspirazione concentrico mm 100 100 - -

Diametro condotto di scarico sdoppiato mm 80 80 - -

Diametro condotto di aspirazione sdoppiato mm 80 80 - -

Diametro condotto di scarico mm - - 125 125

Portata massica fumi max kg/s 0,014 0,014 0,020 0,020

Portata massica fumi min. kg/s 0,014 0,014 0,018 0,018

Temperatura fumi max °C 146 146 110 110

Temperatura fumi min. °C 116 116 85 85

Classe NOx — 3 3 3 3

Tipo di gas — G20 G20 G20 G20

— G31 G31 G31 G31

Pressione di alimentazione gas metano mbar 20 20 20 20

Pressione di alimentazione gas propano mbar 37 37 37 37

Tensione di alimentazione elettrica V 230 230 230 230

Frequenza di alimentazione elettrica Hz 50 50 50 50

Potenza elettrica nominale W 130 130 80 80

Peso netto kg 33 32 29 28

Dimensioni altezza mm 730 730 730 730

larghezza mm 400 400 400 400

profondità mm 299 299 299 299

Grado di protezione contro l’umidità e la penetrazione dell’acqua (**) IP X5D IP X5D IP X5D IP X5D

(*) secondo EN 625

(**) secondo EN 60529

(***) con bollitore esterno

DE DIETRICH, nella costante azione di miglioramento dei prodotti, si riserva la possibilità di modicare i dati espressi in questa documentazione

in qualsiasi momento e senza preavviso. La presente documentazione è un supporto informativo e non considerabile come contratto nei

confronti di terzi.

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Dear Customer,

We are condent your new boiler will meet all your requirements.

All De Dietrich products have been designed to give you what you are looking for: good performance

combined with simple and rational use.

Please do not put away this booklet without reading it rst as it contains some useful information

which will help you to operate your boiler correctly and efciently.

Do not leave any packaging (plastic bags, polystyrene, etc.) within the reach of children as they are a potential

source of danger.

De Dietrich declares that these models of boiler bear the CE mark in compliance

with the basic requirements of the following Directives:

- Gas directive 2009/142/EC

- Efciency Directive 92/42/EEC

- Electromagnetic Compatibility Directive 2004/108/EC

- Low Voltage Directive 2006/95/EC

CONTENTS

INSTRUCTIONS FOR USERS

1. Instructions prior to installation 69

2. Instructions prior to commissioning 69

3. Commissioning the boiler 70

4. Adjusting room and DHW temperatures 71

5. Description of button ( ) (Summer - Winter - Heating only - Off) 71

6. Filling the system 72

7. Turning off the boiler 72

8. Gas conversion 72

9. Prolonged shutdown. Frost protection (heating circuit) 73

10. Troubleshooting 73

11. Routine maintenance instructions 73

INSTRUCTIONS FOR FITTERS

12. General information 74

13. Instructions prior to installation 74

14. Installing the boiler 75

15. Dimensions of boiler 76

16. Installation of ue and air ducts 77

17. Connecting the mains supply 81

18. Connecting the room thermostat 81

19. Gas conversion methods 82

20. Visualisation of electronic board parameters on boiler display (“info” function) 84

21. Parameter settings 85

22. Adjustment and safety devices 85

23. Positioning the ignition and ame-sensor electrode 86

24. Checking combustion parameters 87

25. Output/pump head performance 87

26. Connecting the external probe 88

27. Connecting an external storage boiler 88

28. Annual servicing 89

29. Draining the heating circuit 89

30. Cleaning the lters 90

31. Removing scale from the DHW circuit 90

32. Dismounting the water-water heat exchanger 91

33. Circuit diagram 92

34. Illustrated wiring diagram 96

35. Technical data 100

OPERATING INSTRUCTIONS

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1. INSTRUCTIONS PRIOR TO INSTALLATION

This boiler has been designed to heat water to a temperature lower than boiling point at atmospheric pressure. It must

be connected to a central heating system and to a domestic hot water supply system according to its performance and

power output.

Before having the boiler installed by a qualied tter, make sure the following operations are performed:

a) Make sure that the boiler is adjusted to use the type of gas delivered by the gas supply. To do this, check the markings

on the packaging and the rating plate on the appliance.

b) Make sure that the ue terminal draft is appropriate, that the terminal is not obstructed and that no exhaust gases

from other appliances are expelled through the same ue duct, unless the latter has been specially designed to collect

exhaust gas from more than one appliance, in compliance with current laws and regulations.

c) Make sure that, if the boiler is connected to existing ue ducts, these have been thoroughly cleaned as residual products

of combustion may detach from the walls during operation and obstruct the ow of fumes.

d) To ensure correct operation and maintain the warranty, observe the following precautions:

1. DHW circuit:

1.1. If the water is harder than 20 °F (1 °F = 10 mg calcium carbonate per litre of water), install a polyphosphate

dispenser or an equivalent treatment system, compliant with current regulations.

1.2. Thoroughly ush the system after installation of the appliance and before use.

1.3. The materials used for the product’s DHW circuit comply with Directive 98/83/CE.

2. Heating circuit

2.1. new system

Before proceeding with installation of the boiler, the system must be cleaned and ushed to eliminate residual

thread-cutting swarf, solder and any solvents, using suitable proprietary products. To avoid damaging metal, plastic

and rubber parts, only use neutral cleaners, i.e. non-acid and non alkaline. Recommended cleaning products are:

SENTINEL X300 or X400 and FERNOX Regenerator for heating circuits. Use these products in strict compliance

with the manufacturers’ instructions.

2.2. existing system:

Before installing the boiler, drain the system and clean it to remove sludge and contaminants, using suitable

proprietary products as described in section 2.1.

To avoid damaging metal, plastic and rubber parts, use only neutral cleaners, i.e. non-acid and non-alkaline such as

SENTINEL X100 and FERNOX Protector for heating circuits. Use these products in strict compliance with the

manufacturers’ instructions.

Remember that the presence of foreign bodies in the heating system can adversely affect boiler operation (e.g.

overheating and excessive noise of the heat exchanger).

Failure to observe the above will render the warranty null and void.

2. INSTRUCTIONS PRIOR TO COMMISSIONING

Initial lighting of the boiler must be carried out by an authorised Service Engineer who must rst ensure that:

a) the rated data correspond to the supply (electricity, water and gas) data;

b) the installation complies with current laws and regulations;

c) the appliance is correctly connected to the power supply and earthed. Failure to observe the above will render the

guarantee null and void.

Prior to commissioning, remove the protective plastic coating from the boiler. Do not use any tools or abrasive detergents

to do this as you may damage the painted surfaces.

The appliance is not intended to be used by persons (including children) with reduced physical, sensory or mental

capacities, or who lack experience or knowledge, unless, through the mediation of a person responsible for their

safety, they have had the benefit of supervision or of instructions on the use of the appliance.

OPERATING INSTRUCTIONS

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3. COMMISSIONING THE BOILER

To light the boiler correctly, proceed as follows:

1) power the boiler

2) open the gas tap;

3) press the button ( ) and switch the boiler to Summer ( ), Winter ( ) or heating only ( );

4) press the heating circuit (+/-) and domestic hot water circuit ( ) temperature adjustment buttons ( ) in order to ignite

the main burner.

When the boiler is lit, the symbol ( ) will appear on the display.

In the Summer position ( ) the main burner will only ignite if a DHW tap is opened.

WARNING

During initial ignition, the burner may not ignite (causing the boiler to shut down) until any air in the gas pipes is vented. In

this case, repeat the ignition procedure until gas reaches the burner. Press button ( ), for at least 2 seconds.

0805_2302 / CG_2072

SYMBOL KEY

BUTTON KEY

Operation in the heating mode

On / Off / Summer / Winter / heating only

Flame present (burner on)

(+/-) : CH temperature adjustment

No ame (ignition failure)

(+/-) : DHW temperature adjustment

Operation in the DHW mode

Reset

Generic fault

Information

RESET

No water (Low system pressure)

Numerical signal (Temperature, fault code, etc.)

Figure 1

OPERATING INSTRUCTIONS

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4. ADJUSTING ROOM TEMPERATURE AND DHW TEMPERATURE

The system must be tted with a room thermostat for controlling indoor temperature.

Adjust the room temperature ( ) and the DHW temperature ( ) by pressing the respective +/- (gure 1). The ignition

of the burner is shown on the display with the symbol ( ) as described in section 3.

HEATING

While the boiler is operating in the heating mode, the display (gure 1) shows the ashing symbol ( ) and the heating

delivery temperature (°C).

DOMESTIC HOT WATER

While the boiler is operating in the DHW mode, the display (gure 1) shows the ashing symbol ( ) and the DHW output

temperature (°C).

5. DESCRIPTION OF BUTTON (Summer - Winter - Heating only - Off)

Press this button to set the following operating modes:

• SUMMER

• WINTER

• HEATING ONLY

• OFF

In the SUMMER mode, the display shows ( ). The boiler satises requests for DHW only while central heating is NOT

enabled (ambient frost protection function active).

In the WINTER mode, the display shows ( ). The boiler satises requests for both DHW and central heating (am-

bient frost protection function active).

In the HEATING ONLY mode, the display shows ( ). The boiler satises requests for central heating only (ambient frost

protection function active).

In the OFF mode, the display shows neither of the above two symbols ( ) ( ). In this mode, only the ambient frost

protection function is active while requests for DHW and central heating are not satised.

OPERATING INSTRUCTIONS

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6. FILLING THE SYSTEM

WARNING

Disconnect the boiler from the mains power supply using the two-pole switch.

IMPORTANT: Regularly check that the pressure displayed on the pressure gauge is 0.7 - 1.5 bar, with the boiler cold.

In case of overpressure, open the boiler drain tap. In case of insufcient temperature, open the boiler lling tap (gure 3).

Open the tap very slowly in order to vent the air.

24 MI FF - 24 MI 24 FF - 24

CG_2262 / 1007_2901

A - System drain tap

B – Pressure gauge

C - System lling tap

(supplied as an accessory for models 24 FF - 24)

Figure 2

D – Disconnector

The boiler is tted with a hydraulic pressure gauge which prevents the boiler from working if there is no water.

N.B.: In case pressure drops occur frequently, have the boiler checked by an authorised Service Engineer.

7. TURNING OFF THE BOILER

To turn off the boiler, disconnect the electric power supply. In “OFF” mode (section 5) the boiler remains off (the display

indicates OFF) though the electrical circuits remain live and the frost protection device is enabled (section 9).

8. GAS CONVERSION

The boilers can operate both on natural gas and LPG.

All gas conversions must be made by an authorised Service Engineer.

OPERATING INSTRUCTIONS

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9. PROLONGED SHUTDOWN. FROST PROTECTION

Do not drain the whole system as lling up with water again causes unnecessary and harmful scale to build up inside the

boiler and the heating elements. If the boiler is not used during winter and is therefore exposed to the danger of frost, add

some specic anti-freeze to the water in the system (e.g.: propylene glycol coupled with corrosion and scale inhibitors).

The electronic boiler management system includes a “frost protection” function for the heating system which, when delivery

temperature falls below 5°C, operates the burner until a delivery temperature of 30°C is reached.

The frost protection function is enabled if:

* the boiler is electrically powered;

* the gas tap is open;

* the system is at the correct pressure;

* the boiler is not blocked.

10. TROUBLESHOOTING

Faults are shown on the display with an error code (e.g.: E 01):

To RESET the boiler, press and hold down “R” for at

least 2 seconds. If this fault persists, call the Authorised

Service Centre.

0607_1205

N.B.: 5 reset attempts can be performed after which

the boiler shuts down. To reset again, switch off the

boiler for a few seconds.

RESETTABLE

faults

Figure 3

CODE

FAULT CORRECTIVE ACTION

DISPLAYED

Press and hold down “R” for at least 2 seconds. If this fault persists, call the

E01 Failed ignition shutdown

Authorised Service Centre.

Press and hold down “R” for at least 2 seconds. If this fault persists, call the

E02 Safety thermostat tripped

Authorised Service Centre.

Flue thermostat/ ue pressure

E03

Call the Authorised Service Centre.

switch tripped

Shutdown after 6 consecutive

Press and hold down “R” for at least 2 seconds. If this fault persists, call the

E04

ame losses

Authorised Service Centre.

E05 Flow sensor failure Call the Authorised Service Centre.

E06 DHW sensor fault Call the Authorised Service Centre.

Hydraulic pressure switch

Check that the pressure in the system is correct; See section 6. If this fault

E10

block

persists, call the Authorised Service Centre.

Probable blocked pump safety

E25/E26

Call the Authorised Service Centre.

trip

Press and hold down “R” for at least 2 seconds. If this fault persists, call the

E35 Parasite ame (ame error)

Authorised Service Centre.

Switching off due to reductions

E96

RESET is automatic. If this fault persists, call the Authorised Service Centre

in power supply

N.B.: in case of a fault, the display backlighting ashes together with the error code.

11. ROUTINE MAINTENANCE INSTRUCTIONS

To keep the boiler efcient and safe, have it checked by the authorised Service Centre at the end of every operating period.

Careful servicing ensures economical operation of the system.

Do not clean the outer casing of the appliance with abrasive, aggressive and/or easily ammable cleaners (e.g.: petrol,

alcohol, and so on). Always switch off the appliance before cleaning it (see section 7 Switching off the boiler).

OPERATING INSTRUCTIONS

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16.4 DIMENSIONS OF SEPARATE OUTLETS

CG_2124 / 0905_2305

16.5 HORIZONTAL SEPARATE FLUE INSTALLATION EXAMPLES - C82

IMPORTANT -

Make sure there is a minimum downward slope towards the outside of 1 cm per metre of duct length.

In the event of installation of the condensate collection kit, the angle of the drain duct must be directed towards the boiler.

1010_0102/CG1643

CG_1643_FR / 1010_0101

L max = 10 m

(L1 + L2) max = 30 m

N.B.: For the C52 type, do not t the ue and air duct terminals on opposite walls of the building.

The inlet ue must have a maximum length of 10 metres for C52 fumes outlets.

If the discharge duct is longer than 6 metres, install the condensate collection kit, supplied as an accessory, near the boiler

IMPORTANT:

if tting a single ue duct, make sure it is adequately insulated (e.g.: with glass wool) wherever the duct

passes through building walls. For detailed installation instructions, consult the technical data provided with the accessories.

INSTALLATION INSTRUCTIONS

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