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DeDietrich MCR 24, Технические инструкции

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55

08/06/06 - 300008460-001-B

MCR 24, 24/28 MI, 30/35 MI, 34/39 MI

Alarm 

code

Description

Probable causes

Checks/Solution  

E3

Control panel: faulty
Power supply cable: 
faulty

Control panel: faulty
Power supply cable: faulty
Power supply cable badly 
connected

Check the electrical connections.

E4

No flame detection 
(After a prolonged 
shutdown, up to 5 
start-up attempts may 
be made)

No spark from the electrode

- Check the ignition electrode (spacing of the electrodes), its connector and its 
connection cable
- Check the positioning of the electrode (gap: 3.5 mm)
- Check the earth

Presence of a series of sparks
No flame detection

- First check that the gas valve is open, that the gas supply pressure is present, that 
the gas conduit has been sufficiently bled, that the air/flue gas conduit is not blocked 
and is not leaking, that the siphon is full and not blocked
- If you use a two-phase electrical grid, jumper   must be removed
- Clean or replace the ignition electrodes
- The CO

2

 level at full load and part load

Detection of a parasite flame 
Ionisation error (<3

µ

A or >9

µ

A)

- Check the combustion and the stability of the flame,
- The CO

2

 level at full load and part load

- Check the electrical connections, particularly the earth
- Clean or replace the ignition electrodes
- Check the positioning of the electrode (gap: 3.5 mm)

E5

Ionisation error

Poor setting: CO

2

- Check the CO

2

 level in the gas valve unit

- Check the ignition electrode (spacing of the electrodes), its connector and its 
connection cable
- Check the concentric combusted gas evacuation and combustive air inlet pipes
- Check the high speed gas circulation,

E6

Detection of a parasite 
flame

Replace the control panel if it is faulty

E7

Water pressure in the 
boiler:absence
Pump operation: Poor

The water level and/or pressure 
are too low

Check the water pressure in the installation
Carry out a visual check for the presence of any water leaks

No circulation

Check that the boiler circulating pump is working. Insert a screwdriver into the slot in 
the pump spindle and turn the spindle several times to the right and left. Check the 
wiring. If the pump still does not work, it is faulty and must be changed.

Too much air

When the pump is switched off, vent the system

Bad pump wiring

Check the electrical connections

Содержание MCR 24

Страница 1: ...MCR 24 24 28 MI 30 35 MI 34 39 MI Wall hung gas condensation boilers Technical instructions English 08 06 06...

Страница 2: ...r 16 Installation 17 1 Water treatment and connections 19 2 Connecting the options 27 3 Connecting the external controls 28 4 Connection of the domestic hot water sensor 31 5 Antifreeze protection 31...

Страница 3: ...S 57 rue de la Gare F 67580 MERTZWILLER 33 3 88 80 27 00 33 3 88 80 27 99 Issued by See end of notice Product type Wall hung gas boilers Formats MCR 24 MCR 24 28 MI MCR 30 35 MI MCR 34 39 MI Standard...

Страница 4: ...from one gas to another must be carried out by a SERV elite technician Prior to commissioning compare the factory settings of the appliance with the local power supply conditions If the settings have...

Страница 5: ...st Boiler package with mounting frame Can be used to make the water gas and water evacuation connections Safety valve disconnector condensates run off Accessories package dependent on the type and len...

Страница 6: ...atic bleed valve 2 Smoke nozzle 3 Outlet for measuring combustion hygiene 4 Heat exchanger 5 Air gaz canal 6 Fan air inlet 7 Gas block 8 Display 9 Control panel 10 Pressure gauge 11 Circulating pump 1...

Страница 7: ...sses when off T 30 C W 30 30 29 28 Losses through the outer casing 1 1 1 1 0 9 0 5 Water capacity l 1 7 1 8 2 2 2 Weight without water without mounting frame without cladding kg 29 30 5 32 31 5 Specif...

Страница 8: ...Boilers Boiler package Forced flue package Horizontal diameter 60 100 Vertical diameter 80 125 MCR 24 HG1 DY847 CX50 MCR 24 28MI HG2 DY847 CX50 MCR 30 35MI HG3 DY847 CX50 MCR 34 39MI HG4 DY847 CX50 B...

Страница 9: ...eter 22 mm Flow connection Inside diameter 18 mm Flow connection External diameter 22 mm Gas connection Inside diameter 18 mm Gas connection External diameter 22 mm Combustion air inlet diameter 100 C...

Страница 10: ...diameter 22 mm Gas connection Inside diameter 18 mm Gas connection External diameter 22 mm Combustion air inlet 100 mm Combustion air inlet 100 mm Flue gas discharge duct 60 mm Flue gas discharge duct...

Страница 11: ...nly All connections on terminal block X1 X2 X4 X5 X6 X7 are in 230 V All connections on terminal block X9 are low voltage only The MCR is a modular boiler whose temperature can be regulated using one...

Страница 12: ...the control panel and any disturbances Figures points and or letters may be displayed The symbols located above the function keys indicate their current function Pressing on any key will display the...

Страница 13: ...ameters press key l Press the key successively to scroll down the various parameters 2 1 Setting the manual mode Press key several times until the symbol flashes on the menu bar Press the l key The mi...

Страница 14: ...displayed Press the key until the OFF symbol is displayed Press the l key to modify the setting The symbol appears production of domestic hot water activated 2 3 Switching off the domestic hot water...

Страница 15: ...setting OFF Activation of the comfort setting AUTO Setting dependent on the control unit Factory setting Press the key The symbol flashes Press the key a second time The symbol ECO flashes To confirm...

Страница 16: ...andard with an 8 litre expansion tank except MCR34 39 MI Initial pressure of the expansion tank 1 bar The total water volume is determined according to the static height of the installation and for an...

Страница 17: ...iance must be carried out in compliance with the statutory texts and rules of the codes of conduct in force particularly Safety regulations against fire and panic in establishments open to the public...

Страница 18: ...f the modifed decree dated 05 02 1999 the installation engineer must be in possession of the certificates of compliance approved by the Ministries in charge of construction and gas safety Different fo...

Страница 19: ...oncentration of inhibitors after installing them make the necessary modifications to the installation inject water in the installation and perform all maintenance operations conform to these instructi...

Страница 20: ...ctly from outside and by an opening in the upper section connected directly with the outside The minimum cross section of the air vent and the openings to be provided must be 100 cm2 clear cross secti...

Страница 21: ...ounter current in the chimney or 4 Air flue gas connection by concentric pipes in the boiler room and single flex in the chimney combustive air in counter current in the chimney For Belgium Homologati...

Страница 22: ...centric pipes in the boiler room Single pipes in the chimney combustive air in counter current Alu C33 s C33 x 60 100 mm 80 mm rigid 18 23 5 10 12 80 125 mm 80 mm rigid 24 25 5 Concentric pipes in the...

Страница 23: ...34 39 MI Horizontal forced flue 60 100 mm type C13x connection Connection to an outside wall or roof outlet Connection C33x Concentric vertical forced flue Connection to a sloping or flat roof A Flue...

Страница 24: ...room Single pipes in the chimney combustive air in counter current Discharge via conduit fresh air in counter current Connection C33x C33s For Belgium Concentric pipes in the boiler room Inspection t...

Страница 25: ...3 connection Connection to a chimney 80 mm type B23 connection Chimney conduit fitting into a chimney combustive air taken in the premises A Ventilation 100 cm2 minimum B Casing classified M1 C Leak p...

Страница 26: ...t containing an omnipolar switch with an opening distance 3 mm Only qualified professionnals may carry out electrical connections always with the power off When connecting to the mains be sure to resp...

Страница 27: ...y a 2 wire telephone cable or by an electric cable with a cross section that may be up 2 x 1 5 mm2 ZRefer to the instructions delivered with the package Underfloor heating Easymatic FM 50 Easyradio AD...

Страница 28: ...B 3 Connecting the external controls Unscrew the 2 screws Remove the front panel of the cladding Run the cables in the cable clamps Connect the cables to the connectors See drawing opposite Switch of...

Страница 29: ...function remove the bridge between terminals 4 and 3 15 Existing bridge To be used when room thermostat is connected 16 Switch Heating To use this function remove the bridge between terminals 4 and 1...

Страница 30: ...instructions delivered with the package 3 3 External temperature probe connection Existing bridge Outside sensor connection An outside temperature sensor can be connected to connectors 1 and 2 on term...

Страница 31: ...e Cable BUS AD 221 or AD 222 or Thermostat ON OFF MCR boilers must be installed in a frost free environment If the temperature of the central heating water in the boiler falls too much the integrated...

Страница 32: ...ot proposed The boiler is equipped with a 3 pin connector without power on terminal block X7 The terminal block can be used to connect to an external gas valve a remote alarm transfer and boiler opera...

Страница 33: ...ump switches off after 5 seconds and the heating domestic hot water reversal valve remains in the DHW position With Easymatic or Easyradio When the desired room temperature is not reached the pump ope...

Страница 34: ...equipment is properly set for the type of gas used For Belgium Any intervention on the gas valve unit is strictly forbidden 1 1 Final checks before commissioning The first start up is to be performed...

Страница 35: ...valve unit in the event of water leakage Do not allow water to get into the boiler Check the condensates discharge siphon it must be filled with clean water up to the mark Check the boiler pump Remove...

Страница 36: ...e indicates the operating code Unscrew the flue gas requirement plug Connect the combusted gas analyser Set the boiler to full load Press the key The display shows H 3 The full load is set Measure the...

Страница 37: ...the extremity of the probe is in the centre of the smoke evacuation pipe Repeat the high speed test and the low speed test as often as necessary until the correct values are obtained without having to...

Страница 38: ...38 MCR 24 24 28 MI 30 35 MI 34 39 MI 08 06 06 300008460 001 B Write down the type of gas on the sticker on the inside of the flap...

Страница 39: ...the breakdown for example E10 Correct the error if possible Press key for 2 seconds The boiler restarts After an E1 E2 E7 E10 or E13 error the 3 minute air venting cycle will take place before the boi...

Страница 40: ...n 1 Connection 0 P24 Remote alarm Terminal X7 0 Stop OFF Connectors 1 and 2 closed 1 Alarm messages Connectors 1 and 3 closed 2 Operating light Connectors 1 and 3 closed 3 External gas valve Connector...

Страница 41: ...C using the key To confirm press the l key To confirm press the l key The symbol P 1 appears If necessary set other parameters by selecting them using the or keys Press key 2 time to return to the cur...

Страница 42: ...appears To reinstate the factory settings enter the value Y using the or key To confirm press the l key 2 8 Manual operation Press key several times until the symbol flashes on the menu bar Press the...

Страница 43: ...nection 2 10 Antifreeze protection We recommend setting the boiler thermostat to a value lower than 10 C if using a classic installation Define parameter P4 as 1 energy saving mode the heat retention...

Страница 44: ...e the following instructions GN G20 to G31 Turn the high speed adjustment screw 2 rotations clockwise or Turn high speed screw clockwise until it is closed Turn high speed adjustment screw 3 5 4 rotat...

Страница 45: ...45 08 06 06 300008460 001 B MCR 24 24 28 MI 30 35 MI 34 39 MI 2 1 Adjusting the gas valve See Setting the gas air ratio 110850LTW7H030...

Страница 46: ...liance a setting combustion operation must be carried out If the ionisation current is less than 3 check the ignition ionisation electrode as well as the ignition line and the earth connection Only or...

Страница 47: ...n it must be filled with clean water up to the mark 1 4 Checking the ignition electrode Wipe off all traces of deposits using an abrasive cloth Check the gap between the electrodes 3 to 4 mm Check the...

Страница 48: ...air ratio and if necessary correct it If you still do not manage to reach the values indicated a complete service of the boiler is required See Maintenance Check the flame through the viewport it mus...

Страница 49: ...nsor Dismantle the electrode pin and the earth cable Unscrew the 2 screws Remove the unit Clean or replace the ignition electrodes 2 3 Remove the front plate from the combustion chamber Disconnect the...

Страница 50: ...2 5 Maintenance of the heat exchanger Check the burner seal Check the insulating component between the front plate and the thermal exchanger A damaged or hardened seal must always be replaced Handle t...

Страница 51: ...the power supply to the boiler Cut off the cold water supply and drain the DHW tank Bleed the boiler Unscrew the 2 screws Remove the exchanger Clean the plate heat exchanger with a descaling product...

Страница 52: ...the fan connector before reattaching the fan to the thermal exchanger Check that the leak proofing material between the front plate and the thermal exchanger is correctly fitted Top up the installatio...

Страница 53: ...iagram BK Black BL Blue BR Brown GN Green GN YW Green Yellow GY Grey RD Red WH White YW Yellow As Flow sensor BP Boiler pump Fs Flow switch CP Pump DV Inverter valve GCV Gas valve HLT Limiting thermos...

Страница 54: ...culation Check that the boiler circulating pump is working Insert a screwdriver into the slot in the pump spindle and turn the spindle several times to the right and left Check the wiring If the pump...

Страница 55: ...me Ionisation error 3 A or 9 A Check the combustion and the stability of the flame The CO2 level at full load and part load Check the electrical connections particularly the earth Clean or replace the...

Страница 56: ...Check the electrical connections E11 Air box temperature too high Air leakage from heat exchanger Check the gasket on the inspection flange Check the leak proof seal Front plate Check that the front d...

Страница 57: ...Meaning Description 8 Short circuit Measured start temperature t1 Outlet temperature defined Tset The boiler restarts automatically when the outlet temperature is lower than the defined outlet temper...

Страница 58: ...occured for example E12 StX Status code Error code for example St3 Central heating mode nX Number of times that the error occured t1X Flow temperature for example t175 t2X Return temperature for examp...

Страница 59: ...s the manufacturer s instructions in particular those relating to the regular maintenance of the unit the rules of the profession The warranty is limited to the exchange or repair of such parts as hav...

Страница 60: ...ICHSHOFFEN 33 0 3 88 80 26 50 33 0 3 88 80 26 98 cpr dedietrichthermique com Spare parts MCR 24 24 28 MI 30 35 MI 34 39 MI 08 06 06 300008460 002 B to order a spare part it is imperative to give the c...

Страница 61: ...61 08 06 06 300008460 001 B MCR 24 24 28 MI 30 35 MI 34 39 MI MCR 24 28 MI 30 35 MI 34 39 MI...

Страница 62: ...2751 Pre mixing chamber hood 2028 S62719 Gasket 2029 S62742 Burner hood 2030 S62729 Bleed valve connection 5 pieces 2031 S62711 Feed through diameter 48x28 5 pieces 2032 S44483 M8 nut 10 pieces 2033 S...

Страница 63: ...62723 Fastening plate Exchanger 30 kW 1003 S100071 Assembly mounting Heating body Rep Code no Description 1004 S62709 Leakproof seal 10 m 1005 S62711 Feed through diameter 48x28 5 pieces 1006 S62720 F...

Страница 64: ...y plate 4003 S62750 Ignition transformer 4004 S100219 Cable conductor 4005 S62737 Front panel Control panel Rep Code no Description 4006 S62735 Rear Control panel 4007 S62710 Screw K3 5x10 10 pieces 4...

Страница 65: ...65 08 06 06 300008460 001 B MCR 24 24 28 MI 30 35 MI 34 39 MI 5034 S100246 Disconnector 5035 S100232 Gasket 8 4x5x1 6 10 pieces 5036 S100231 M10x1x5 nut 10 pieces Rep Code no Description...

Страница 66: ...66 MCR 24 24 28 MI 30 35 MI 34 39 MI 08 06 06 300008460 001 B...

Страница 67: ...67 08 06 06 300008460 001 B MCR 24 24 28 MI 30 35 MI 34 39 MI...

Страница 68: ...RICH HEIZTECHNIK www dedietrich com AT CN Direction des Ventes France 57 rue de la Gare F 67580 MERTZWILLER 33 0 3 88 80 27 00 33 0 3 88 80 27 99 Rheiner Strasse 151 D 48282 EMSDETTEN 49 0 25 72 23 5...

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