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84        Maintaining the Boiler

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page

VERIFY FLUE INTEGRITY

Analyser readings indicate that combustion products and inlet air 

Is

O

2

 > 20.6%

and

CO

2

 < 0.2%

Is

O

2

 > 20.6%

and

CO

2

 < 0.2%

CHECK CO AND COMBUSTION RATIO AT MAX. RATE

With boiler still set at maximum gas rate, insert analyser probe into 

Allow readings to stabilise before recording.

TURN OFF APPLIANCE AND CALL

ATAG TECHNICAL HELPLINE FOR 

ADVICE. 0800 254 5065

THE APPLIANCE MUST NOT BE

COMMISSIONED UNTIL PROBLEMS ARE 

IDENTIFIED AND RESOLVED.

Is

CO less than

350ppm and

CO/CO

2

 ratio less 

than 0.0040

YES

NO

Check all seals around the appliance burner, 

Rectify where necessary.

SET BOILER TO MINIMUM RATE

In accordance with boiler instructions, set boiler to operate at 

combustion to stabilise.

CHECK CO AND COMBUSTION RATIO AT MINIMUM RATE

gas sampling point. Allow readings to stabilise before recording.

Is

CO less than

350ppm and

CO/CO

2

 ratio less 

than 0.0040

BOILER IS OPERATING SATISFACTORILY

No further actions required.

other commissioning procedures are completed.

Complete Benchmark Checklist, recording CO and combustion ratio 

readings as required.

Is

CO less than

350ppm and

CO/CO

2

 ratio less 

than 0.0040

TURN OFF APPLIANCE AND CALL

MANUFACTURER’S TECHNICAL HELPLINE

FOR ADVICE.

THE APPLIANCE MUST NOT BE

COMMISSIONED UNTIL PROBLEMS ARE

IDENTIFIED AND RESOLVED. IF

COMMISSIONING CANNOT BE FULLY

COMPLETED, THE APPLIANCE MUST BE

DISCONNECTED FROM THE GAS SUPPLY IN

ACCORDANCE WITH THE GS(I&U)R.

NOTE: 

Check and record CO and combustion 

ratio at both max. and min. rate before contacting 

the manufacturer.

< =  less than or 

equal to

> =  greater than or 

equal to

YES

NO

YES

NO

NO

YES

NO

YES

Содержание NCB700-2S Plus 42K

Страница 1: ...ire or explosion may result causing property damage or personal injury Do not store or use petrol or other flammable vapours and liquids in the vicinity of this or any other appliance WHATTO DO IFYOU...

Страница 2: ...ation 50 6 3 Measuring Flue Length 53 6 4 Terminating the Flue 53 7 Setting the DIP Switches 54 7 1 PCB DIP Switches 54 7 2 Front Panel DIP Switches 54 8 Connecting Electrical Supplies 55 8 1 Accessin...

Страница 3: ...bour s phone call your gas provider and follow their instructions If you cannot reach your gas provider call the fire department Do not return to your home until authorised by your gas supplier or the...

Страница 4: ...explosion Do not place combustibles such as newspapers or laundry near the boiler or flue system Doing so may result in a fire Do not place or use hair sprays spray paints or any other compressed gas...

Страница 5: ...C Very low scald risk CAUTION Do not turn on the boiler unless the water and gas supplies are fully opened Doing so may damage the boiler Do not turn on the water if the cold water supply shut off va...

Страница 6: ...taining pressure of up to 3 bar The air vent is required in the system during filling CAUTION The boiler is equipped with an internal bypass valve The internal bypass valve is not intended to replace...

Страница 7: ...ts which contains electrical and electronic equipment EEE and batteries and accumulators Because of the potentially hazardous substances that usually accompany EEE improper handling of this type of wa...

Страница 8: ...can be dangerous When you no longer wish to use the boiler disable any parts that could be potentially hazardous Installation Operation Manual User s Information Manual Boiler mounting template ErP La...

Страница 9: ...water production Heat output adjustment Adjustable over entire Max Min output range Type of heating installation Close circuit Max heating operation pressure bar 2 5 Max heating temperature C 90 Adju...

Страница 10: ...w length 45 60 100 m 1 2 Max horizontal coaxial length 80 125 m 68 Max vertical coaxial length 80 125 m 70 Equivalent elbow length 90 80 125 m 2 4 Equivalent elbow length 45 80 125 m 1 2 Equivalent le...

Страница 11: ...dby mode PSB kW 0 003 0 003 Other items Standby heat loss Pstby kW 0 089 0 080 Ignition burner power consumption Pign kW 28 26 Annual energy consumption QHE GJ 70 3 71 6 Sound power level indoors LWA...

Страница 12: ...llowing diagram shows the key components of the boiler Component assembly diagrams and particular parts lists are included in the Appendices Fan Motor Front Panel Flue Duct Ignitor Flame Rod Circulati...

Страница 13: ...Dual Venturi Mixing Chamber Expansion Vessel Primary Heat Exchanger Secondary Heat Exchanger Return Adapter Filter Assembly 3 Way Valve Central Heating Return Pressure Relief Valve Central Heating Sup...

Страница 14: ...14 About the Boiler NCB700 3S 54K Fan Motor Front Panel Flue Duct Ignitor Flame Rod Circulation Pump Condensate Trap PCB...

Страница 15: ...Dual Venturi Mixing Chamber Expansion Vessel Primary Heat Exchanger Secondary Heat Exchanger Return Adapter Filter Assembly Gas Valve Central Heating Return Pressure Relief Valve Central Heating Suppl...

Страница 16: ...440mm Supply Connections Description Diameter A Flue exhaust Air intake 60 100 80 125 B Central heating supply 22 mm C Hot water outlet DHW 15 mm D Gas supply inlet 22 mm E Cold water inlet DHW 15 mm...

Страница 17: ...enu and select 2 Central Htg Operation by pressing the OK button 2 In the Central Htg Operation menu select 1 Central Htg ON OFF and select Enable Then select 1 1 CH Set Temp and select a heating temp...

Страница 18: ...ating temperature range by k factor setting value and the applicable outdoor temperature range 20 15 10 5 0 10 15 20 25 5 20 30 40 50 60 50 70 80 90 4 3 5 3 2 5 2 1 5 1 2 0 6 1 0 2 Outdoor Temperature...

Страница 19: ...f the NCB700 boiler in its final location A detailed description is given of the procedure in the sequenced sections below Wall mounting Gas connection Electrical connections Final check Water and con...

Страница 20: ...Circ includes a feature that automatically blocks circulation when the water reaches a temperature of approximately 35 C 2 8 1 Included Items When you open the box you will find the following items wi...

Страница 21: ...ling the NaviCirc with the NCB700 boiler activate the Anti Legionella feature on the NCB700 For more information refer to the NCB700 Installation Operation manual Water Pipes Secondary return water pi...

Страница 22: ...circulation line which circulates domestic hot water back to the boiler from the furthest fixture is recommended Insulate as much of the hot water supply and recirculation lines as possible For more i...

Страница 23: ...chemicals are used Do not install the boiler in areas where petrol or other flammables are used or stored Ensure that combustible materials are stored away from the boiler and that hanging laundry or...

Страница 24: ...acket When mounted with the mounting bracket the boiler will have a 16 mm clearance from the back of the wall WARNING The boiler is heavy Always lift the unit with assistance Be careful not to drop th...

Страница 25: ...d the underfloor heating component will have to be separated from the central heating appliance by means of a plate exchanger WARNING Tighten the boiler water connections taking care not to damage the...

Страница 26: ...e Pipe Hot Water Supply Bottom View DHW Outlet Adapter Condensate Outlet Water Inlet Adapter Condensate Drain Hose Note If the cold water supply pipe is fitted with water meter check valves or loose j...

Страница 27: ...upply Expansion Vessel CheckValve AirVent NaviCirc Note Refer to the following before installing the NaviCirc To prevent backflow of water from the hot water return pipe install a check valve on the c...

Страница 28: ...the NaviCirc To prevent backflow of water from the hot water return pipe install a check valve on the cold water supply An expansion vessel must be installed and it can be moved depending on the insta...

Страница 29: ...nstalling the NaviCirc To prevent backflow of water from the hot water return pipe install a check valve on the cold water supply An expansion vessel must be installed and it can be moved depending on...

Страница 30: ...hot water pipe considering the installation location of the NaviCirc as the flexible hose is 500 mm long Adjusting the Flexible Hoses If the water pipes are connected to flexible hoses remove the fle...

Страница 31: ...mm X straight adapter provided with the NaviCirc at the end of the pipe Cold Water Hot Water Hot Water Return Note When installing the 15 mm X straight adapter the torque should be around 30 Nm Adjus...

Страница 32: ...stainless cap and washer 2 Connect two flexible hoses to the HOT IN and COLD IN RETURN connections 3 Install an air vent on the COLD OUT CLOSED connection Air Vent COLD OUT CLOSED HOT OUT HOT IN COLD...

Страница 33: ...onotforcefullysecuretheNaviCirctothewallwithanchors and screws Doing so may damage the NaviCirc CAUTION Attach the bracket to the wall in the following direction If the bracket is attached to the wall...

Страница 34: ...ater shutoff valves 2 Open hot and cold water taps 3 Check if there are any leaks around the connected part of the flexible hose and stainless cap Note In case of leaks close the shutoff valves and re...

Страница 35: ...must not be longer than 2 m with no more than 2 elbows and must not allow condensation to build up or freezing to occur F The end of the discharge pipe must be fitted so that the discharge outlet is v...

Страница 36: ...set at a high temperature The NaviCirc s malfunction Contact Navien Technical Support The water from the tap is too hot The boiler temperature is set too high Adjust the boiler temperature Hot water c...

Страница 37: ...nsate Pump Condensate can be removed using a condensate pump of a specification recommended by the pump manufacturer The pump outlet should discharge to a suitable internal foul water discharge point...

Страница 38: ...ost vertical route possible to the discharge point with no horizontal sections in which condensate might collect Do not exceed 3 metres outside the dwelling The external pipe should be insulated using...

Страница 39: ...k at plug hole 5 Sink or basin with integrated overflow 6 75 mm sink waste trap 75 450 1 7 6 4 2 3 5 Description 1 Boiler 2 Visible air break 3 75 mm trap 4 Soil and vent stack 5 Invert 6 450 mm minim...

Страница 40: ...tube and facing away from house 7 Hole depth 400 mm minimum by 300 mm diameter 8 Minimum internal diameter 19 mm fall at least 45 mm per meter 9 Pipe size transition point 10 Minimum internal diameter...

Страница 41: ...e dimensions and water pressure are as follows The connection diameter for the domestic cold water inlet must be at least 15 mm If a shut off valve is fitted at the domestic cold water inlet it must h...

Страница 42: ...rect pressure will vary with each application 3 If the pressure is lower than the minimum pressure set 1 bar by default error code E302 will appear on the display 4 Fill the boiler with more water unt...

Страница 43: ...current Gas Safety Installation and Use Regulations in accordance with BS 6891 However the following recommendations must be complied with at the least Before installing the gas pipes check the type o...

Страница 44: ...nsed professional only Natural Gas Connection The gas supply must comply to the current Gas Safety Installation and Use Regulations in accordance with BS 6891 The nominal inlet working gas pressure me...

Страница 45: ...measure the inlet gas pressure 1 Shut off the manual gas valve on the gas supply line pipe Gas Valve Opened Closed 2 Open a hot water tap The boiler should turn on and the gas in the gas supply line...

Страница 46: ...end of the duct passes through must lead to the outside of the home There must be no hazardous materials or obstructions near the duct If the outlet passes through a wall made of combustible material...

Страница 47: ...O From a vertical obstruction 300 P From an openable window 600 Q From an adjacent vertical terminal 600 R From an opening in the car port e g door window into the dwelling 1200 S Below a roof window...

Страница 48: ...f air across it at all times A terminal must not be sited below 2 m where people have access to such as public footpaths access routes patios etc However If the terminal is fitted less than 2 m above...

Страница 49: ...anagement Kit mm 1 Clearance no less than 200 mm from the lowest point of the balcony or overhang 2 1200 mm from an opening in a car port on the same wall i e door or window leading into dwelling 3 Th...

Страница 50: ...d gas removal system must be replaced by a new one For horizontal flue terminal through the wall must be installed horizontal and level The flue pipe inside the terminal is fitted in a 3 to ensure the...

Страница 51: ...The use of sand and cement to seal the flue to the fabric opening of the building would secure the flue as required The seals can be put over the securing sand and cement as a decorative weather seal...

Страница 52: ...0 45 1 2 90 2 4 80 125 68 45 1 2 90 2 4 6 2 2 Vertical Coaxial Removal Type C33 Standard Removal System 80 125 Max length A 70 m 60 100 Max length A 21 m A A Extended Removal System 80 125 Max length...

Страница 53: ...ludes an adapter for connection to the boiler and a removal terminal The total length of the flue must not exceed the maximum value defined If the flue installation includes elbows while calculating t...

Страница 54: ...ment 7 1 PCB DIP Switches Dip Switch Set of 8 The DIP SW on the circuit board configures boiler type capacity burner type country and discharge of condensate function 1 2 3 4 5 6 7 8 ON DIP SW Switch...

Страница 55: ...t the time of installation Note The NCB700 boiler has an electrical protection degree of IPX5D The electrical connection must be made via a bipolar switch located on the same premises as the boiler Th...

Страница 56: ...ether with the seal B 4 Insert all these elements in the cable gland and press on the lid A until the cable is sufficiently fixed in place and the unit is sealed Note The boiler must be connected to t...

Страница 57: ...ables our modulating range of OpenTherm room controls to be connected without any further modifications NCB700 OpenTherm Protocol Room Controller 1 2 3 4 5 6 8 3 Connecting the Switched Live 230 V The...

Страница 58: ...Navien NCB700 boiler has a dedicated connector for the Navien Smart Room Controller NRC 10R on the back of the front panel terminal connection at the terminal block is not required Simply connect the...

Страница 59: ...angeover check the gas inlet pressure Check that the gas circuit is hermetically sealed Check that the control panel is working correctly Check that it functions normally when the boiler is switched o...

Страница 60: ...r s schedule programming operation is set f DHW preheat Displayed when the DHW preheat feature is enabled DHW preheat DHW Intelligent DHW preheat Always on DHW preheat Weekly DHW preheat off Eco mode...

Страница 61: ...al heating and DHW supply temperatures Refer to the following table for detailed information a b c d e f a Menu button Access to the Main menu screen b Back button Access to the previous screen c OK b...

Страница 62: ...panel display after the power is turned on 10 3 Start Up Wizard The setup wizard should run the first time the unit is powered on The wizard must be completed before the boiler can be used 1 Set the t...

Страница 63: ...r temperature 1 Make sure that all hot water taps are closed and ensure that the internal circulator and any external circulating pumps are off 2 In normal operation mode press the Up button The DHW t...

Страница 64: ...l F W Ver Panel firmware version Note The fan motor controls the APS so the fan target speed Fan Target RPM is only for your reference 10 6 Accessing Basic Menu Items In the Main Menu screen you can v...

Страница 65: ...weekdays Saturdays and Sundays 4 OFF NotUsed Disable the schedule function When the boiler is connected to an outdoor temperature sensor optional functioning may be activated according to outdoor tem...

Страница 66: ...ionella Activate the Anti Legionella function and schedule The graph shows how the set temperature is determined K factor values can be set using the front panel 20 15 10 5 0 10 15 20 25 5 20 30 40 50...

Страница 67: ...1 ECO Preheat OFF Turn off the DHW Preheat 2 ECO Intelligent Set to detect DHW usage for repeat the detected cycle 3 ECO Schedule Set the detect DHW usage for a week 4 Always Preheat Always turn on t...

Страница 68: ...s the preheat operation function has been used 6 Gas Consumption View monthly gas consumption 10 6 5 Viewing Error History To view the error history press the Menu button and then select 5 Error Histo...

Страница 69: ...Times Number of times a flame loss misfire has occurred 4 2nd ignition No of Times Number of second ignition attempts 5 3rd ignition No of Times Number of third ignition attempts 6 4th ignition No of...

Страница 70: ...switch between the parameters or to increase decrease setting values Press the OK button to select a parameter or to confirm after making changes 10 7 2 Viewing Input and Output Status To view the bo...

Страница 71: ...ime for service notification Setting range 30 3650 days 10 years It can be set in 10 day increments Default 1820 days 5 years Press the Back button to return to the previous screen or menu Item Descri...

Страница 72: ...ice notification according to the operating times Setting range 300 36500 cycles It can be set in 100 cycle increments Default 18200 cycles 20 Low Water Pressure Set the lowest operating pressure of t...

Страница 73: ...tral heating maximum operation mode 5 DHW 2nd MAX Set the boiler to run in 2nd stage DHW maximum operation mode 6 2nd MIN Set the boiler to run in 2nd stage minimum operation mode Item Description 3 3...

Страница 74: ...ormal operation Water pressure sensor Auto DHW Circulation E407 DHW Outlet thermistor Open or Short Circuit Alarm E421 DHW Inlet thermistor Open or Short Circuit Auto E434 Abnormal operation Flow cont...

Страница 75: ...l need to drain either both the central heating side and domestic hot water DHW side or one side only before performing maintenance tasks such as cleaning the adapter filter or to prevent the boiler f...

Страница 76: ...s still connected Do not close the gas valve except for routine maintenance as this will limit additional freeze protection If the boiler will not be used for an extended period drain the boiler If th...

Страница 77: ...as analyser A full strip down service is recommended at regular intervals or where analyser readings are not within correct safety standards 11 5 1 Interim Service For reasons of safety and economy it...

Страница 78: ...cedures given throughout this manual and in component literature shipped with the boiler Failure to perform the service and maintenance could result in damage to the boiler or system Failure to follow...

Страница 79: ...the boiler is serviced annually Servicing must be performed by a competent person in accordance with BS 7967 4 After servicing complete the relevant Service Interval Record section of the Benchmark C...

Страница 80: ...where gas inlet pipe is attached to the fan motor assembly Loosen the hex nut located above the gas valve and remove the gas pipe Remove 4 screws here Loosen the hex nut here 1 Press the Power button...

Страница 81: ...lts connecting the mixing chamber and the heat exchanger and then remove the mixing chamber burner and the chamber bracket 8 Remove the screw connecting the fan motor assembly and the mixing chamber a...

Страница 82: ...s are in voids The Flue Gas Analyser should be of the correct type as specified by BS 7967 Prior to its use the flue gas analyser should have been maintained and calibrated as specified by the manufac...

Страница 83: ...has been visually checked in accordance with the yellow Prior to CO and combustion ratio check box above before proceeding to the Check CO and combustion ratio at maximum rate stage below SET BOILER...

Страница 84: ...te at combustion to stabilise CHECK CO AND COMBUSTION RATIO AT MINIMUM RATE gas sampling point Allow readings to stabilise before recording Is CO less than 350ppm and CO CO2 ratio less than 0 0040 BOI...

Страница 85: ...ponsible for the connection utilization repair or servicing of gas utilization equipment or accessories who is experienced in such work familiar with all precautions required and has complied with all...

Страница 86: ...the gas valve find location B the connection above the gas valve where it is attached to the fan motor assembly Carefully remove the four screws by hand using a Phillips screwdriver and pull the gas...

Страница 87: ...ere personal injury or substantial property damage Navien NCB700 boilers are shipped ready to fire natural gas only Packing Packing Gas Orifice Figure 5 1 Exploded View of Gas Pipe Assembly NCB700 2S...

Страница 88: ...1 ON 2 OFF G31 LPG 1 ON 2 ON Table 1 The DIP Switch Setting by Fuel Selection DANGER When conversion is required be sure to set the front panel DIP switches according to the supply gas type Failure t...

Страница 89: ...rew on cover This must be removed first Model Gas type G20 G31 20 mbar 37 mbar Output Consumption Gas flow Gas flow Load Kcal h kW kW m3 h m3 h NCB700 2S 42K Max 29 240 34 35 3 33 1 32 Min 2 924 3 4 3...

Страница 90: ...PLY_Temp Dip s w 8pin Dip s w 4pin BURNNER HTL M 7 6 5 4 3 2 1 8 MIX V V CN10 OUTLET_Temp 5 4 3 6 2 CN12 M HTL APS INLET_Temp 2 3 4 CN8 1 CN2 M 7 6 5 4 3 2 1 8 WAV V V CN11 P E 1 2 3 4 1 6 7 8 5 1 0 1...

Страница 91: ...Valve Flow Control DC15V Vent Separation Detector Supply Thermistor Outlet Thermistor 1 Return Thermistor UART Communication Interface FRONT PANEL Communication Interface FUSE Inlet Thermistor 1 EMI...

Страница 92: ...perature sensor is on a North or Northeast side of a structure under eaves where the sensor is shielded from direct sunlight Avoid placing sensor in close proximity of heat sources that may affect cor...

Страница 93: ...their responsibility to register with the manufacturer within the allotted time period It is essential that the boiler is serviced in line with the manufacturer s recommendations at least annually Th...

Страница 94: ...s complete DHW mode gas rate m3 hr or ft3 hr Central heating output left at factory settings Yes No If no what is the maximum central heating output selected KW Dynamic gas inlet pressure mbar Central...

Страница 95: ...service in accordance with the manufacturers instructions and BS 7593 It is only acceptable to not have undertaken this if the service engineers attendance visit was in between annual services to att...

Страница 96: ...service in accordance with the manufacturers instructions and BS 7593 It is only acceptable to not have undertaken this if the service engineers attendance visit was in between annual services to att...

Страница 97: ...Memo...

Страница 98: ...Memo...

Страница 99: ......

Страница 100: ...rranty service always contact an official Technical Assistance Service TAS first Contact the technician or professional who installed your boiler Contact a Gas Safe Registered engineer When contacting...

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