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Potterton NXR4i, Installation And Service Manual

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Potterton NXR4i Installation And Service Manual Download Page 4

4

NXR4i

09/06/2011 - 300025088-001-B

. 

Contents

7.3.1

Cleaning the flue gas circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

7.3.2

Cleaning the combustion chamber. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

7.3.3

Positioning of the baffle plates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

7.3.4

Cleaning the flue gas box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

7.3.5

Chemical sweeping  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

7.4 Cleaning the casing material  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
7.5 Maintenance of the burner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

8

Spare parts - NXR4i . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Summary of Contents for NXR4i

Page 1: ...Working towards a cleaner future NXR4i Installation and Service Manual August 2011 heating specialists ...

Page 2: ...on of conformity CE The appliance complies with the standard model described in declaration of compliance 1 It is manufactured and distributed pursuant to the requirements of european directives The original of the declaration of compliance is available from the manufacturer ...

Page 3: ...4 3 1 Main dimensions 10 4 3 2 Position of the boiler 11 4 3 3 Ventilation 12 4 4 Example of an installation 13 4 5 Hydraulic connections 14 4 5 1 Flushing the system 14 4 5 2 Sludge removal 14 4 5 3 Hydraulic connection of the heating circuit 14 4 5 4 Safety valve 15 4 5 5 Hydraulic connection of the water circuit for domestic use 15 4 6 Chimney connection 16 4 6 1 Flue size 16 4 6 2 Connection t...

Page 4: ...the flue gas circuit 20 7 3 2 Cleaning the combustion chamber 20 7 3 3 Positioning of the baffle plates 21 7 3 4 Cleaning the flue gas box 22 7 3 5 Chemical sweeping 22 7 4 Cleaning the casing material 23 7 5 Maintenance of the burner 23 8 Spare parts NXR4i 24 ...

Page 5: ...using the appliance Faulty or insufficient maintenance of the appliance Failure to abide by the instructions on installing the appliance 1 2 2 Installer s liability The installer is responsible for the installation and inital start up of the appliance The installer must respect the following instructions Read and follow the instructions given in the manuals provided with the appliance Carry out in...

Page 6: ...ks with a maximum operating pressure of 10 bar pertain to article 3 3 of the directive and therefore cannot be CE marked to certify compliance with the directive 97 23 EC The boilers and hot water tanks are designed and manufactured in accordance with the sound engineering practice as requested in article 3 3 of the directive 97 23 EC it is certified by compliance with the directives 90 396 EC 92 ...

Page 7: ...do not smoke do not operate electrical contacts or switches doorbell lights motor lift etc 1 Shut off the gas supply 2 Open the windows 3 Extinguish all flames 4 Evacuate the premises 5 Contact a qualified professional 6 Inform the gas supplier 2 1 2 Risk of intoxication Do not obstruct the air inlets in the room even partially If you smell flue gases 1 Switch the appliance off 2 Open the windows ...

Page 8: ...s water and is pressurised Keep the appliance accessible at all times Avoid draining the installation The appliance should be on Summer or Antrifreeze mode rather than switched off to guarantee the following functions Anti blocking of pumps Frost protection Protection against corrosion on domestic hot water tanks fitted with a titanium anode ...

Page 9: ...i 14 Useful output kW 300 357 357 419 419 481 481 543 543 605 605 667 667 729 Power input kW 329 394 392 462 460 530 526 597 595 666 659 731 727 798 Number of sections 8 9 10 11 12 13 14 Water content l 366 409 452 495 538 581 624 Water resistance 1 T 10K mbar B 25 42 63 83 106 135 169 T 15K mbar B 11 18 28 37 47 60 75 T 20K mbar B 6 10 16 21 26 34 42 Pressure in the furnace for nozzle pressure 0 ...

Page 10: ...Intermediate section 530 Equivalent diameter in mm 573 L000056 B 540 240 1740 291 44 30 680 1 Mk Tapped connection Heating flow weld Heating return weld Rp 2 draining outlet Sludge removal hole Rp 2 1 2 plugged Boiler type NXR4i 8 NXR4i 9 NXR4i 10 NXR4i 11 NXR4i 12 NXR4i 13 NXR4i 14 ø A exterior 250 250 250 300 300 300 300 ø 2 1 2 2 1 2 2 1 2 3 3 3 3 ø C Intact or pre drilled plate available in sp...

Page 11: ...mined precisely leave enough space around the boiler to facilitate monitoring and maintenance operations The dimensions in mm correspond to the minimum recommended dimensions needed to ensure adequate accessibility around the boiler 1 Top view 2 Burner door Pay attention to the overall volume of the burner when the door is open To install several boilers in cascade these dimensions should be adapt...

Page 12: ...amage to the boiler it is necessary to prevent the contamination of combustion air by chlorine and or fluoride compounds which are particularly corrosive These compounds are present for example in aerosol sprays paints solvents cleaning products washing products detergents glues snow clearing salts etc Therefore Do not pull in air evacuated from premises using such products hairdressing salons dry...

Page 13: ...Air separator 7 Automatic air vent 9 Isolating valve 10 3 way mixing valve 11 Boiler pump 12 Sludge decanting pot particularly recommended on older installations 13 Flush valve 14 Water low safety pressure sensitive switch 15 Shunt pump 16 Expansion vessel 17 Drain cock 18 Heating circuit filling with disconnector depending on prevailing regulations 19 Water treatment 20 Water meter 26 DHW load pu...

Page 14: ...ng circuit Water flow in the boiler The water flow in the boiler when the burner is operating must correspond with the following formulae Nominal water flow Qn 0 86 Pn 20 Minimum flow Qmin 0 86 Pn 45 this flow also corresponds with the minimum recycle flow in the boiler Maximum water flow Qmax 0 86 Pn 5 Qn flow in m3 h Pn Nominal output full boiler output in kW Connect the flow controller to the t...

Page 15: ...nd the boiler Minimum safety valve flowrate as a function of maximum boiler nominal output Example Maximum boiler nominal output is 200 kW Minimum safety valve flowrate must be 700 kg h 4 5 5 Hydraulic connection of the water circuit for domestic use ZSee Domestic hot water calorifier instructions Minimum relieving capacity Maximum gross boiler output Unit a kW b lb h c MBtu h d Kg h ...

Page 16: ...able regulations while determining the size of the flue Please note that NXR4i boilers have pressurised and tight furnaces and that the pressure at the nozzle must not exceed 0 mbar unless special sealing precautions have been taken for instance in order to connect a static condenser regenerator In order for the boiler to operate correctly it is imperative to respect the draught at the nozzle 0 4 ...

Page 17: ...om the high point of the system All the pumps must be stopped before filling included shunt pump s Do not add cold water suddenly into the boiler when it is hot VERY IMPORTANT Instructions for starting up the boiler for the first time after the system is fully or partly drained If all the air is not bled naturally to an expansion vessel which opens out onto the air the system must include manual b...

Page 18: ...se of long boiler stops one or more years The boiler and the chimney must be swept carefully Close all the doors of the boiler to prevent air from circulating inside the boiler We advise removing the pipe which connects the boiler to the chimney and to close off the nozzle with a cover 6 2 Precautions required if the heating is stopped when there is a risk of freezing We recommend the use of a cor...

Page 19: ...red only a few times in each heating season with very low quantities of water otherwise look for the leak and repair it 7 1 2 Draining We advise you against draining the system unless it is absolutely necessary For example Several months absence with the risk of ice in the building 7 2 Data plate The rating plate fixed on the side of the boiler during installation is used to identify the boiler co...

Page 20: ...emove the upper front panel Take off the lower panels Open the sweeping doors upper doors by unscrewing the 3 nuts using a 19 mm spanner Remove the baffle plates from the upper flue ways Carefully sweep the flue ways with the brush supplied for that purpose Brush the baffle plates If possible use a vacuum cleaner Replace the baffle plates Close the doors 7 3 2 Cleaning the combustion chamber Unscr...

Page 21: ...the metal C003370 B 8229 0022 8229 0010 Boiler NXR4i 8 NXR4i 9 NXR4i 10 NXR4i 11 NXR4i 12 NXR4i 13 NXR4i 14 Upper flue ways First 8229 0010 then 8229 0022 2 x 8229 0010 First 2 x 8229 0010 then 1 x 8229 0022 First 2 x 8229 0010 then 1 x 8229 0022 3 x 8229 0010 Central flue ways First 8229 0011 then 8229 0023 2 x 8229 0011 First 2 x 8229 0011 then 1 x 8229 0023 First 2 x 8229 0011 then 1 x 8229 002...

Page 22: ...ng The products The product must be suitable for boilers with a cast iron body Various manufacturers offer products in the form of a concentrated liquid or aerosol The aerosols are packaged in 0 5 to 1 l spray cans for treating domestic boilers Refer to the instructions supplied with the product The liquid products are available in 1 to 50 l containers These concentrated liquids are diluted before...

Page 23: ...ting surfaces A volume of one litre of solution is generally used for 1 m2 of heating surface domestic boiler i e 0 05 to 0 2 l of concentrate Ignition The burner is ignited after allowing the product time to penetrate for 2 to 5 min Refer to the instructions supplied with the product Cleaning Remove the baffle plates Light sweeping will remove the pulverent residues remaining after combustion The...

Page 24: ...rooks House Coventry Road WARWICK CV34 4LL 08706 000454 08706 000545 8 Spare parts NXR4i To order a spare part quote the reference number next to the part required 300025088 002 A Boiler body Miscellaneous L000065 ...

Page 25: ...25 09 06 2011 300025088 001 B NXR4i 8 Spare parts NXR4i Casing Insulating material for body L000066B 120 8229N011A 50 49 48 47 ...

Page 26: ...26 NXR4i 09 06 2011 300025088 001 B 8 Spare parts NXR4i Control panels ZRefer to the Spare Parts list in the panel instructions KSF ISR control panel KSF CE control panel L000054 L000067 ...

Page 27: ...for combustion chamber door with opening on request 20 9755 0258 Height converter insulation 21 9755 0259 Furnace door guard 22 9755 0260 Furnace door insulation 23 8229 0020 Added hinge 24 9756 0213 Hinge pin for combustion chamber door 25 8229 0205 Hinge for combustion chamber door 25 1 8229 8944 Hinge unit 26 8229 0025 Ramp 27 9757 0027 Inspection flange 27 1 8015 7700 Flame inspection window g...

Page 28: ...5 Complete side panel right width 770 mm 114 200007897 Complete side panel right width 930 mm 115 8229 8835 Complete upper rear panel left 116 8229 8836 Complete upper rear panel right 117 8229 8012 Lower back panel 118 8229 8837 Complete upper cross bar 119 8229 8809 Complete front cover 120 200019564 Painted control panel base 121 8229 0515 Complete intermediate cover 122 8229 0518 Complete rear...

Page 29: ...talled by a qualified engineer In particular the manufacturer shall not be held responsible for any damage loss or injury caused by installations which do not comply with the following applicable local laws and regulations specific requirements relating to the installation such as national and or local regulations the manufacturer s instructions in particular those relating to the regular maintena...

Page 30: ...30 NXR4i 09 06 2011 300025088 001 B Warranty ...

Page 31: ...31 09 06 2011 300025088 001 B NXR4i Warranty ...

Page 32: ... service offices Our service organisation covers the whole of the UK to look after your needs for all Potterton Commercial products Our service office offers a wide range of specialised services including Burner commissioning for all fuels Boiler service contracts Breakdown and repair services Burner and boiler replacement Oil gas conversions Water treatment and descaling Packaged units All descri...

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