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gerkros Attack NST Instructions For Use Manual

Wall gas boiler
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Summary of Contents for gerkros Attack NST

  • Page 2 Putting the boiler into operation ATTACK NST, NSK - WALL GAS BOILER The boiler must be put into operation by a service worker trained by producer! The boiler is set by the producer to natural gas G20, inlet gas pressure 2,0 kPa.

  • Page 3: Table Of Contents

    Contents: 3Introduction 3General description 4Purpose of use 4Conditions of installation 5Conditions of service 5Technical description 6Control front board of the boiler 7Outside dimensions of the boiler 8The main partsof the NST boiler 9The main partsof the NSK boiler 10 Connecting the boiler to water, gas, electricity 10 Supervision over operation 11 Waste-gas exhaust 11 Spare parts...
  • Page 4 For the right working of the boiler it is necessary to keep a minimum water pressure of 1 bar (measured when the water is cold) in the heated system. Description of ATTACK NST, NSK boilers brand: 8-24 kW N S T...
  • Page 5 Purpose of use: The type range of ATTACK wall boilers (turbo and flue version) is produced with modulated output of 8-24 kW. They are used for heating or central heating of family houses, flats, shops and similar places where natural gas is used as fuel. The boiler is also equipped with a device for water heating.
  • Page 6 Technical description Fast-heating wall boilers ATTACK NST, NSK are equipped with copper heat-exchangers protected on surface with silicone coating on the base of aluminium, resistent to 430°C.
  • Page 7 The control centre for controlling boiler operation is a modulation electronic board equipped with a microprocessor. Sensor state and value is scored by software which also gives orders to active elements gas valve, ignition electronics, circulation pump. On the inside distribution of heating water outlet there is an emergency thermostat, pressure switch and pressure gauge signalling the pressure in the heating piping.
  • Page 8 Outside dimensions of the boiler : 225 NSK 183 NST Ventilator Flue D.H.W. C.H. C.H. D.H.W.
  • Page 9 Main parts of the NST boiler :...
  • Page 10 Main parts of the NSK boiler...
  • Page 11 Connecting the boiler to water and gas: Gas inlet D.H.W. inlet D ,H.W. outle t C.H. in let C.H. outlet 3/4 ” 3/4” 1/2” 1/2 ” 3/4” Connecting the boiler to electric net The boiler is plugged into the electric net socket with a supply lead with a plug. The socket must suit to appropriate standards , various multiplugs and lenghtening cables are not allowed to use.

  • Page 12: Waste-Gas Exhaust

    Waste-gas exhaust BEND COLLAR EXTERNAL WALL WASTE-GAS COAXIAL PIP E MIN. 150 mm 1000 mm MANOSTAT VENTILATOR Waste-gas exhaust and combustion air come through double piping (turbo version) delivered by the boiler producer which can be ordered in required amount by the project (horizontal or vertical exhaust) including sealing collars, roof reducing piece and so on.

  • Page 13: Service

    75%, without presence of organic steams, gases and dust. Boiler accessories and documentation ATTACK NST, NSK boilers are delivered completely assemblied and tested functionally. The delivery includes following documentation: – instruction for use with a document on boiler testing on the back side of the instruction...

  • Page 14: Technical Parameters

    Technical parameters Table Max. min. output of heating 24-8 Max. min. output of hot water 24-8 Gas consumption - natural gas 0,9-2,7 m /hod Effectivity 90 92 Electrical supply 230/50 V/Hz Control of room thermostat Min. max. pressure in heating 0,8-3 Min.

  • Page 15: Technical Manual

    TECHNICAL MANUAL FOR ASSEMBLY AND SERVICE COMPANIES Installation of boilers A boiler can be installed only by a company with an appropriate certificate for assembly of gas appliances. Connecting of the boiler must also suit to valid standards, rules and instruction for use.
  • Page 16 Connecting boilers to heating system ATTACK boilers serve for heating systems with forced circulation. Rate of water flow can be set by the switch on the pump. Before filling the heating system with water, it is necessary to clean the system properly. Heaters and distribution must be washed several times.
  • Page 17 Connecting a spatial thermostat (regulator) A spatial thermostat is not a part of boiler accessories but it can be connected into a boiler by the request of a customer. Voltage for switch contacts of the spatial thermostat is 24 V. Connecting of the spatial thermostat into the boiler is illustrated on the connection chart.
  • Page 18 – check the operation of summer and winter mode, regulation of hot-water heating – set appropriate pump speed and pressure in the heating system – test function of ball valves before the boiler – get a user acquainted with the boiler attendance which is confirmed by the user´s signature in the letter of guarantee –...
  • Page 19 Operation Hot-water mode Hot-water mode is switched on by an information from the water passage sensor when the passage is bigger than 3 l/min. After opening hot water, the circulation pump of the heating circuit stops. Starting output (set up by resistance trimer P5) is kept after burning the boiler in the time of two seconds.
  • Page 20 Anti-freezing function If a thermal sensor of the heating circulation finds a decrease of temperature of under 6°C, the pump is activated and burner starts with minimum output. This lasts until the 25°C temperature is reached and then the anti-freezing function stops working.This function is active even when the operation switch is in SUMMER position and in emergency mode (stand-by).
  • Page 21 Functions of the BERTELLI automatics in MAXIMUS RZT, RZK boilers If the spatial thermostat is not connected, the pump keeps working even if the boiler is off. If the spatial thermostat is connected, the pump is in operation after switching off the boiler during 180 seconds.
  • Page 22 Technical parameters Supply Supply voltage 230 V +10%-15% Inner fuse 2AF 250VAC Ground resistance 10 m Contact loading Outlet to main valve 230 V 0,1A MAX cos 0,4 Outlet to pump 230 V 0,4A MAX cos 0,4 Outlet to ventilator 230 V 0,35A MAX cos 0,4 Functional paramaters Operation temperature range...
  • Page 23 Table of relation between resistance and temperature Temperature Resistance Temperature Resistance Temperature Resistance ° C °C °C 111,3 14,17 2,83 105,7 13,62 2,74 100,5 13,09 2,66 95,52 12,59 2,58 90,84 12,11 2,50 86,43 11,65 2,43 82,26 11,21 2,35 78,33 10,79 2,29 74,61 10,39...

  • Page 24: Ignition Andionization Unit

    Ignition and ionization unit (ACCF) Definition Electronical appliance for control of flame by the ES 298, for direct ignition of the burner by discharge spark and monitoring presence of flame with ionization electrode. Heating, time schedule t1= 0,5s typically, t2=0,5 to 1s typically (depends o n heating system, not the control board function) t3= run-out of the pump, t4=run-out of the ventilator...
  • Page 25 Technical parameters Flame detection >1.2 uA Minimum ionization current Maximum length of ionization cable Maximum parasitic capacity 1 nF Minimum resistance of ionization electrode and cable to ground 50 m >200 uA Short-circuit current The circuit measuring amplifier sensitivity M 10 M 11 Table of values (230V~50 Hz): Štart ON...
  • Page 26 Working in the case of failure - If there is flame simulation, ignition is stopped Note: If CMF unit finds flame simulation, it reports anomaly and if this situation lasts longer than 15 seconds, the request for heat is stopped (it is switched off by a relay). A new try for ignition can occur only after resetting the system with the operation mode switch.
  • Page 27 CHART OF “ATTAC K NST” CONN ECTING E LEC T R IC S UPPL Y PH A S E NE UTR A L C ON DU CT OR JP 1 IO NI ZA TIO N E LECT RO DE BROW N PUM P BLU E B LUE...
  • Page 28 CHART OF “ ATTACK NSK” CONNECTING EL EC T R IC S UPPLY NE UT RA L C ON DU CT OR PH AS E ION IZA TIO N E LE CT RO DE BR OWN P UM P BL UE IGN IT ION MODRÝ...
  • Page 29 Setting minimum and maximum boiler output into heating Modulation regulator on the gas fittings is set from production to minimum and maximum pressure on nozzles that suits to minimum (8kW) and maximum (24kW) boiler output. When putting boiler to operation, it is necessary to check minimum and maximum gas pressure on the nozzles.

  • Page 30: Notes

    Notes :...
  • Page 31 RECORD ON PUTTING THE BOILER TO OPERATION Boiler type: ..................Boiler output: ................Production No................Date of putting to operation: ............Service company: ................Stamp, signature Obligatory service examination after the 1st year of operation Date: ............Sta mp, si gnature Obligatory service examination after the 2nd year of operation Date: ............
  • Page 32 DOCUMENT on testing and completness of ATTACK gas boiler Boiler output : 8-24 kW Boiler production No.: The product delivered with this certificate suits to technical standards and technical conditions. The product was manufactured by its drawing design in requested quality and is approved by TECHNICAL TESTING FACILITY SKTC104 in Piešťany under the No.

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