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12

Note: it is permitted to connect dischar-
ge pipes together provided that the joint
pipe is sized to accommodate the combi-
ned flow.

2.4.4  Expansion Vessel (C.H. only)

C.H. EXPANSION VESSEL – The integral
expansion vessel is pre-charged to a pres-
sure of 1.0 bar, which should be checked
before the C.H. water system is filled.
This vessel is suitable for correct operation
of system capacities up to 82 litre capacity.
If the actual C.H. system volume is greater,
then an additional vessel must be fitted to
the system. For systems where the volume
is greater, the additional expansion vessel
volume can be determined by multiplying
the volume in excess of that which can be
accommodated by the appliance by the fac-
tor 0.901. BS 7074 gives further details
regarding C.H. expansion vessel sizing.

2.4.5

Connection of condensation 
water trap

The drip board and its water trap must be
connected to a civil drain through a pipe
with a slope of at least 5 mm per metre to
ensure drainage of condensation water. 

The plastic pipes normally used for civil
drains are the only type of pipe which is
appropriate for conveying condensation
to the building’s sewer pipes.

Fig. 6

Fig. 7

LIST OF ø 60/100 ACCESSORIES

1a-b

Coaxial duct kit L. 790 code

8096250

2a

Extension L. 1000 code

8096150

2b

Extension

L. 500 code 8096151

3

Vertical adaptor code

8086950

C33

6

5

3

2

H (m)

C13

1

2

1

L (m)

IMPORTANT:
-  The insertion of each additional 90° bend with a diameter of  60/100 (code

8095850) reduces the available section by 1.5 meters.

-  The insertion of each additional 90° bend with a diameter of 80/125 (code

8095870) reduces the available section by 2 meters.

-  Each additional 45° curve installed a diameter of 60/100 (code 8095950) the

80/125 (code 8095970) reduces the available length by 1.0 metres.

- During assembly it is important to make sure that the kit with axial pipes (1) is

positioned HORIZONTAL FLUES MUST BE LEVEL..

NOTE: Before connecting accessories, it is always advisable to lubricate the internal
part of the gaskets with silicon products. Avoid using oils and greases.

Model

Length of pipe

Length of pipe

ø 60/100

ø 80/125

H

H

V

Min

Max

Min

Max

25/55

6 m

1.3 m

8 m

12 m

1.2 m

15 m

30/55

5 m

1.3 m

7 m

10 m

1.2 m

13 m

LIST OF ø 80/125 ACCESSORIES

1a-b 

Coaxial duct kit L. 785 code

8096253

2a

Extension

L. 1000 code 8096171

2b

Extension

L. 500 code 8096170

3

Adapter for

ø 80/125 code 8093150

Articulated tile 8091300

Roof Terminal 8091205

V (VER

TIC

AL - m)

H (HORIZONTAL - m)

Summary of Contents for MURELLE HE 25

Page 1: ...nd servicing instructions PLEASE LEAVE THIS INSTRUCTION WITH THE USER U n i t 3 A T h o r n t o n R o a d I n d E s t a t e O f f H o c k n e y R o a d B r a d f o r d B D 8 9 H Q 0 1 2 7 4 4 8 8 3 8 8 w w w h e a t i n g s p a r e s 2 4 7 c o m ...

Page 2: ...g gloves safety footwear During all manoeuvres and handling actions every attempt should be made to ensure the following unless unavoidable and or the weight is light Keep back straight Avoid twisting at the waist Always grip with the palm of the hand Keep load as close to the body as possible Always use assistance WARNING Caution should be exercised when performing any work on this appliance Prot...

Page 3: ...U n i t 3 A T h o r n t o n R o a d I n d E s t a t e O f f H o c k n e y R o a d B r a d f o r d B D 8 9 H Q 0 1 2 7 4 4 8 8 3 8 8 w w w h e a t i n g s p a r e s 2 4 7 c o m ...

Page 4: ...e UK and to encourage regular servicing to optimi se safety efficiency and performance Benchmark is managed and promoted by the Heating and Hotwater Industry Council For more information visit www centralheating co uk U n i t 3 A T h o r n t o n R o a d I n d E s t a t e O f f H o c k n e y R o a d B r a d f o r d B D 8 9 H Q 0 1 2 7 4 4 8 8 3 8 8 w w w h e a t i n g s p a r e s 2 4 7 c o m ...

Page 5: ... pag 6 2 INSTALLATION pag 10 3 CHARACTERISTICS pag 22 4 USE COMMISSIONING AND MAINTENANCE including BENCHMARK Mains Pressure Hot Water Storage Checklist Service Record pag 27 5 FAULT FINDING pag 37 6 REPLACEMENT OF PARTS pag 38 7 EXPLODED VIEWS pag 40 Murelle EV HE 25 55 Gas Council number 47 283 20 Murelle EV HE 30 55 Gas Council number 47 283 21 IPX4D Important Information IT IS A STATUTORY REQU...

Page 6: ...e kit includes boiler valve pack guarantee these Installation Users instructions wall mounting template Remove the strapping and carefully remove the carton and packaging Check the contents instructions valve pack and hanging bracket Remove the two bolts securing the boiler to the pallet 1 DESCRIPTION OF THE BOILER 100 152 100 70 78 E U M R G E U C S3 M R G 245 288 156 L 460 190 80 85 110 90 ø 60 ...

Page 7: ...min 9 8 11 8 D H W pressure min max bar 0 2 5 5 0 2 5 5 D H W tank capacity l 51 51 Recuperation time between 15 and 60 C min 9 55 10 10 Recuperation heat of 70 contents min 3 40 3 30 D H W expansion vessel capacity charge pressure l bar 2 5 3 0 2 5 3 0 Exhaust fumes temperature at max flow rate 80 60 C C 70 70 Exhaust fumes temperature at min flow rate 80 60 C C 65 65 Exhaust fumes temperature at...

Page 8: ...Automatic bypass 23 D H W drain cock 24 Condensate drain tap 25 Gas cock 26 Heating system return cock 27 Heating system delivery cock 30 Pressure reducing valve 3 5 BAR 31 Non return valve 32 Expansion relief valve 6 BAR 33 Tundish expansion relief valve 34 Filling loop 35 Tundish 36 D H W safety limit stat 85 C CONNECTIONS R C H return M C H flow G Gas connection E D H W inlet U D H W outlet C R...

Page 9: ...imit stat 90 C 14 Ignition transformer 15 D H W combined temperature and pressure relief valve 16 Expansion vessel 17 Safety thermostat 100 C 18 D H W sensor SB 19 D H W tank 20 D H W expansion vessel 21 Tundish 22 C H safety valve 3 BAR 23 D H W safety limit stat 85 C U n i t 3 A T h o r n t o n R o a d I n d E s t a t e O f f H o c k n e y R o a d B r a d f o r d B D 8 9 H Q 0 1 2 7 4 4 8 8 3 8 ...

Page 10: ...he installation that the tun dish is visible to the user in the D H W supply to the appliance the flow from this assembly should be connected to the cold water inlet E via the flow regu lator housing supplied Ensure flow regu lator 11 and gasket 1 supplied are fit ted in the flow regulator housing See fig 5 and fig 6 for installation details It is important that no isolating valve is fitted betwee...

Page 11: ... bar PRV s are called out with the number 15 and 22 on fig 3 The connections to the expansion relief valve and temperature and pressure relief valve should not be used for any other pur pose See fig 6 for example of the dischar ge pipe s for the temperature and pressu re relief valve and expansion relief valve terminations 9 8 10 9 8 10 6 R M 6 S3 18 19 1 E 11 G 6 12 21 22 ø15 DS3 1 20 U DS7 R M U...

Page 12: ...duct kit L 790 code 8096250 2a Extension L 1000 code 8096150 2b Extension L 500 code 8096151 3 Vertical adaptor code 8086950 C33 6 5 3 2 H m C13 1 2 1 L m IMPORTANT The insertion of each additional 90 bend with a diameter of 60 100 code 8095850 reduces the available section by 1 5 meters The insertion of each additional 90 bend with a diameter of 80 125 code 8095870 reduces the available section b...

Page 13: ...ions to stack pipes should avoid across flow between other Branch pipes Soakaways Any soakaways have to be purpose made and located as close to the boiler as possi ble but clear of the buildings foundations and any buried services The best option is to purchase a soakaway from a drainage manufacturer and install it to the manufac turers recommendation Condensate disposal positioning and ter minati...

Page 14: ... 9 for types of smoke outlet air inlet 2 6 1 Separate ducts kit The diagrams of Figure 9 show a few exam ples of the permitted exhausts configura tions Fig 8 TABLE 1 ACCESSORIES ø 80 Accessories ø 80 Head loss mm H2O 25 55 30 55 Inlet Outlet Inlet Outlet Coaxial duct kit 90 elbow MF 0 20 0 25 0 25 0 30 45 elbow MF 0 15 0 15 0 20 0 20 Extension L 1000 horizontal 0 15 0 15 0 20 0 20 Extension L 1000...

Page 15: ...he painted surface The air inlet outlet flue duct MUST NOT be closer than 25 mm 1 in to combustible material In certain weather conditions the terminal may emit a plume of steam This is normal but positions where this would cause a nuisance should be avoided Fig 9 Terminal position Minimum spacing A Directly below an openable window air vent or any other ventilation opening 300 mm 12 in B Below gu...

Page 16: ...number 8092227 can be connected to the boiler This will control the heating function of the boiler The domestic hot water will continue to be controlled by the boiler keypad NOTE Reset parameter 10 to 2 PAR 10 2 2 8 3 Remote control CR 73 connection optional The boiler is designed for connection to a remote control unit supplied on request code 8092226 The remote control unit CR 73 allows for comp...

Page 17: ...RMOSTAT AND EXTERNAL SENSOR Code 8094101 4 BASIC SYSTEM MULTI ZONE SYSTEM WITH VALVE ROOM THERMOSTAT REMOTE CONTROL CR 73 Code 8092226 AND EXTERNAL SENSOR Code 8094101 PARAMETERS SETTINGS To use the remote control CR as remote control panel for the boiler rather than as room reference set PAR 7 0 U n i t 3 A T h o r n t o n R o a d I n d E s t a t e O f f H o c k n e y R o a d B r a d f o r d B D ...

Page 18: ...te control CR as room reference for a zone set PAR 7 1 5 BASIC SYSTEM MULTI ZONE SYSTEM WITH VALVE ROOM THERMOSTAT REMOTE CONTROL CR 73 Code 8092226 AND EXTERNAL SENSOR Code 8094101 6 BASIC SYSTEM MULTI ZONE SYSTEM WITH PUMP ROOM THERMOSTAT REMOTE CONTROL CR 73 Code 8092226 AND EXTERNAL SENSOR Code 8094101 U n i t 3 A T h o r n t o n R o a d I n d E s t a t e O f f H o c k n e y R o a d B r a d f ...

Page 19: ... day zone 1 with PAR 25 and the night zone at PAR 26 without external sensor gain access to setting the day zone 1 by pressing the key and change the value with the keys and Gain access to setting the night zone by pressing the key twice and changing the value with the keys and 7 SYSTEM WITH DOUBLE TEMPERATURE OUTPUT MULTI ZONE SYSTEM WITH VALVE ROOM THERMOSTAT INTERNAL TIME CLOCK AND EXTERNAL SEN...

Page 20: ...ED ZONES PARAMETERS SETTINGS To use the remote control CR as remote control panel for the boiler rather than as room reference set PAR 7 0 R M SE TA1 SE SI P1 TA2 EXP VM EXP IP TA1 TA2 P2 VM IP EXP 13 SYSTEM WITH MIXER VALVE SYSTEM WITH TWO MIXED ZONES INDEPENDENT AND TWO KITS ZONA MIX Code 8092234 U n i t 3 A T h o r n t o n R o a d I n d E s t a t e O f f H o c k n e y R o a d B r a d f o r d B ...

Page 21: ...Z Zone valve AUX Auxiliary connection TLS D H W over heating thermostat 85 NOTE Boiler heating control can be by either voltage free switching on terminals 7 8 of CN 6 after removal of the link or by a 240 v demand on terminal 14 CN7 and removal of the link on 7 8 on CN6 A permanent power supply must be main tained at all times CONNECTOR SPARE PART CODES CN1 CN13 code 6316231 CN2 code 6316233 CN3 ...

Page 22: ... only by authorised personnel Do not connect other electro nic devices cameras telephones mp3 players etc Use a tool to remove the cap and reinsert after use ATTENTION Communication port sensitive to electrostatic charges Before use it is advisable to touch an earthed metallic surface to discharge static electricity INFORMATION KEY This key can be pressed several times to view the parameters CHIMN...

Page 23: ...00 12 Visualizzazione codice errore ultima anomalia 15 Contatore accessi parametri installatore es 140 accessi 5 Visualizzazione temperatura sonda fumi 8 Visualizzazione corrente di ionizzazione in µA 16 Contatore accessi parametri OEM es 48 accessi 1 Display of external temperature only with external sensor connected 2 Display of heating temperature sensor SM 3 Display of D H W temperature sensor...

Page 24: ...pettivamente ON e OFF 33 Visualizzazione relè solare R3 con schedino solare INSOL rispettivamente ON e OFF 17 Display of D H W flowmeter load i e 18 l min and 0 3 l min or flow switch respectively ON and OFF 18 Display of delivery probe value mixed with board Mixed Zone 1 input S2 19 Display of safety thermostat Mixed Zone input S1 respectively ON and OFF 22 Indicator of pump with board Mixed Zone...

Page 25: ...led 1 of voltage 1 Enabled 0 Not assigned 7 Allocation of CR73 channels 1 Circuit 1 1 2 Circuits 1 and 2 8 Fan rpm Step ignition 0 0 81 rpmx100 0 1da 0 1a19 9 0 0 1da 20 a 81 9 Long chimneys 0 20 1 0 1 CR 73 10 Remote control option setting 2 CR 53 1 3 RVS 11 Correction values external sensor 5 5 C 1 0 Always 12 Backlighting duration 1 Never sec x 10 1 3 1 199 0 Minimum 13 Modulating pump speed 1 ...

Page 26: ...ION RANGE UNIT OF INC DEC DEFAULT MEASUREMENT UNIT SETTING 49 Reset default parameters 1 par 01 par 02 In case of difficulty in understanding the current setting or in case of an anomalous or incomprehensible conduct of the boiler we suggest to restore the initial values of the parameters setting PAR 49 1 and the PAR 1 and PAR 2 as specified at point 3 3 1 BOILER PAR 2 Instantaneous boiler with di...

Page 27: ...et para meter 10 to 2 PAR 10 2 3 6 TEMPERATURE DETECTION SENSOR Table 4 gives the values of the electrical element Ω obtained on the DHW and exhaust fumes sensors according to the variations in temperature When the heating sensor SM and fumes sensor SF is interrupted the boiler will not function With the D H W sensor SB interrupted the boyler will function in the CH mode only 3 7 ELECTRONIC IGNITI...

Page 28: ...nted on its body is pointing in the same direction the water flow 3 9 HEAD AVAILABLE TO SYSTEM Residual head for the heating system is shown as a function of rate of flow in the graph in fig 14 The speed of the modulating pump is set as default installation parameter PAR 13 1 0 600 200 1200 1000 800 600 400 PORTATA l h PREVALENZA RESIDUA mbar 500 400 100 200 300 Murelle HE 25 30 55 30 55 25 55 Fig...

Page 29: ...meters will scroll up and down with the keys and The display pane will show the values of the parameter PAR 1 If the boiler is a 25 55 methane G20 model SET 20 will be displayed To change the fuel to propane G31 it is necessary to set SET 22 by pressing the key The standard display will automatically return after 10 seconds The table below shows the SET settings to enter when the type of gas fuel ...

Page 30: ...uring the service the condensate drain can be checked it is important that should the boiler not be used for some time that the trap is checked and filled if required see fig 20 4 5 1 Chimney sweep function fig 21 To check the boiler combustion CO2 press the chimney sweep button for a few Fig 19 ATTENTION Before removing or refitting the front panel of the boiler open the small upper plastic door ...

Page 31: ...vating the Chimney sweep function If the and keys are presses during the 15 minutes the boiler will be brought respectively to max and min output The chimney sweep function will automati cally cancel after 15 minutes or if the chim ney sweep button is pressed again Fig 20 Fig 21 U n i t 3 A T h o r n t o n R o a d I n d E s t a t e O f f H o c k n e y R o a d B r a d f o r d B D 8 9 H Q 0 1 2 7 4 ...

Page 32: ...mple te ignition cycle or for any other reason the flame is not detected the boiler will stop and display ALL 06 Press the reset button on the con trol panel 2 to restart the boiler Should the problem persist seek techni cal help SAFETY THERMOSTAT ALARM 07 fig 23 f If either the 100 degree stat or the heat exchanger safety stat open the burner will turn off If the stat closes within 1 minute the b...

Page 33: ...URE FIRST MIXED ZONE ALL 21 fig 23 q When the mixed zone board is connec ted to the boiler If the delivery probe sen sor becomes open or short circuit the display will indicate ALL21 During this error the boiler will function normally SAFETY THERMOSTAT INTERVENTION SECOND MIXED ZONE ALL 22 fig 23 r When the mixed zone board is connec ted to the boiler intervention of the safety thermostat switches...

Page 34: ...lyser and the interpretation of the results The flue gas analyser used should be one meeting the requirements of BS7927 or BS EN50379 3 and be calibrated in accordance with the analyser manufac turers requirements and Competence can be demonstrated by satisfactory completion of the CPA1 ACS assessment which covers the use of electronic portable combustion gas analysers in accordance with BS 7967 P...

Page 35: ...ater scale reducer been fitted CONDENSING BOILERS ONLY The condensate drain has been installed in accordance with the manufacturer s instructions and or BS5546 BS6798 Yes If the condensate pipe terminates externally has the pipe diameter been increased and weatherproof insulation fitted Yes U n i t 3 A T h o r n t o n R o a d I n d E s t a t e O f f H o c k n e y R o a d B r a d f o r d B D 8 9 H ...

Page 36: ...er Name Company Name Telephone No Gas Safe Register No Comments Signature Date Engineer Name Company Name Telephone No Gas Safe Register No Comments Signature Date Engineer Name Company Name Telephone No Operative ID No Comments Signature Date Engineer Name Company Name Telephone No Gas Safe Register No Comments Signature Date Engineer Name Company Name Telephone No Gas Safe Register No Comments S...

Page 37: ...harge pipework have been connected and terminated to Part G of the Building Regulations Yes Are all energy sources fitted with a cut out device Yes No Has the expansion vessel or internal air space been checked Yes No THERMAL STORES ONLY What store temperature is achievable C What is the maximum hot water temperature C ALL INSTALLATIONS The hot water system complies with the appropriate Building R...

Page 38: ...ignature SERVICE 4 Date Engineer Name Company Name Telephone Number Comments Signature SERVICE 5 Date Engineer Name Company Name Telephone Number Comments Signature SERVICE 6 Date Engineer Name Company Name Telephone Number Comments Signature SERVICE 7 Date Engineer Name Company Name Telephone Number Comments Signature SERVICE 8 Date Engineer Name Company Name Telephone Number Comments Signature S...

Page 39: ...tailed continuity check i e by disconnecting and checking each component is required to trace the faulty component It is possible that a fault could occur as a result of local burning arcing but no fault could be found under test However a detailed visual inspection should reveal evidence of burning around the fault 5 3 POLARITY CHECK Appliance reconnected to mains supply and meter set on 300 V ac...

Page 40: ...as described in 6 4 Remove flue connection Disconnect flue sensor Disconnect limit stat Remove condensate drain connections Disconnect flow and return connections Remove two fixing brackets Lift out heat exchanger Refit in reverse order Recommission boiler Test for gas tightness 6 7 FLUE SENSOR Turn off power supply Remove cover Remove sealed chamber cover Disconnect flue sensor Unscrew sensor Rep...

Page 41: ...nometer and analyser close the test points and check for tightness Check for gas tighhtness 6 12 PRINTED CIRCUIT BOARD PCB Isolate from power supply Remove screw securing control panel Lower panel to horizontal position Remove PCB covers Disconnect all wiring Remove PCB fixing screws Ensure any PCB links are matched to old board Reset PAR 1 and PAR 2 as per the table 3 3 1 Refit in reverse order R...

Page 42: ... PAGE 3830050 617 MURELLE EV HE 25 55 30 55 18 06 2009 1 4 U n i t 3 A T h o r n t o n R o a d I n d E s t a t e O f f H o c k n e y R o a d B r a d f o r d B D 8 9 H Q 0 1 2 7 4 4 8 8 3 8 8 w w w h e a t i n g s p a r e s 2 4 7 c o m ...

Page 43: ...30050 617 MURELLE EV HE 25 55 30 55 18 06 2009 2 4 U n i t 3 A T h o r n t o n R o a d I n d E s t a t e O f f H o c k n e y R o a d B r a d f o r d B D 8 9 H Q 0 1 2 7 4 4 8 8 3 8 8 w w w h e a t i n g s p a r e s 2 4 7 c o m ...

Page 44: ...1 Condensate drainage pipe 33 6010812 Main exchanger R H fixing bracket 34 6010814 Main exchanger fixing bracket 35 6013102 Automatic air vent 1 4 36 6277131 Probe NTC D 4X47 37 6098315 Ignition transformer 38 5194303 Insulated stainless steel tank 55 l 39 6029002 Pressure relief valve 1 2 7 bar 40 6124818 Circulating pump Grundfos UPS 15 60 41 6040209 Pressure relief valve 42 6226621 Pressure rel...

Page 45: ...r 3 4 98 6265850 5 ways water collector 99 6040208 Pressure relief valve 100 6157628 PRV drain pipe 101 5199100 Filling Loop 102 6258312 D H W cylinder counterflange 103 6052705 Gasket for D H W cylinder flange 104 6258311 D H W cylinder flange 105 6072708 Magnesium anode plug 3 4 OR 106 6215211 Hanging bracket 107 6179200 Holder complete with locking nut 108 6248851 Smoke chamber outlet gasket 10...

Page 46: ... 2 5 The pipework must be supported at a distance of 0 5m for inclined runs and 1 0m for vertical runs Condensate traps Where the condensate drain is not sealed to the discharge connection a trap will be required The water seal should be 38mm or more for external discharge and 75mm or more for internal discharge When connecting to a exter nal stack the trap should be located within the building St...

Page 47: ...U n i t 3 A T h o r n t o n R o a d I n d E s t a t e O f f H o c k n e y R o a d B r a d f o r d B D 8 9 H Q 0 1 2 7 4 4 8 8 3 8 8 w w w h e a t i n g s p a r e s 2 4 7 c o m ...

Page 48: ...sshoughton Castleford WF10 4UA Phone 0845 9011114 Fax 0845 9011115 www sime ltd uk Email enquiries sime ltd uk U n i t 3 A T h o r n t o n R o a d I n d E s t a t e O f f H o c k n e y R o a d B r a d f o r d B D 8 9 H Q 0 1 2 7 4 4 8 8 3 8 8 w w w h e a t i n g s p a r e s 2 4 7 c o m ...

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