Strebel TN 220 Installation, Operation & Maintenance Manual

Gas fired storage water-heater for sanitary hot water production with atmospheric burner

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TN 220/300/400
Gas fired storage water-heater for
sanitary hot water production with
atmospheric burner.
TN 220 – 34
TN 300 – 44
TN 400 – 44
INSTALLATION, OPERATION
& MAINTENANCE MANUAL
Page 1
11/07/00

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Summary of Contents for Strebel TN 220

  • Page 1 TN 220/300/400 Gas fired storage water-heater for sanitary hot water production with atmospheric burner. TN 220 – 34 TN 300 – 44 TN 400 – 44 INSTALLATION, OPERATION & MAINTENANCE MANUAL Page 1 11/07/00...
  • Page 2: Table Of Contents

    INDEX Page. GENERAL INFORMATION AND CHARACTERISTICS 1.1 APPLIANCE’S CLASSIFICATION 1.2 PACKAGING CONTENT 1.3 CONSTRUCTIONAL AND OPERATIONAL DESCRIPTION 1.4 CONTROL AND SAFETY DEVICES 1.5 CONTROL PANEL 1.6 DIMENSIONS AND CONNECTIONS 1.7 TECHNICAL DATA 1.8 ELECTRICAL DIAGRAM 1.9 EXPLODED VIEW INSTALLATION INSTRUCTIONS 2.1 GENERAL PRECAUTIONS 2.2 INSTALLATION RECOMMENDATIONS 2.3 LOCATION OF THE APPLIANCE...
  • Page 3: Appliance's Classification

    1.1 APPLIANCE’S CLASSIFICATION purpose is to keep into pre-set limits the combustion quality and the combustion stability within min. and max. conditions. DEFINITION ATMOSPHERIC BURNER These appliances are classified as: “Direct gas fired It is composed of two parts: a principal burner, which ensures storage water-heater.
  • Page 4: Control And Safety Devices

    COMBUSTION CHAMBER It is placed in the lower part of the appliance and holds atmospheric burner, flame control sensor (thermocouple) and the pilot burner with ignition elec- trode. 1.4 CONTROL AND SAFETY DEVICES MAGNESIUM ANODE The water heater is protected against metal-to-metal cor- rosion by a magnesium anode.
  • Page 5: Control Panel

    Control thermostat – Technical data It cuts off the burner in case of overheating of the water tank, due to non-working of the adjustable control thermo- Temperature range 40º / 80º stat. The operation is automatic (automatic reset) as soon Contacts rating 250 V ~ / 2.5 A as the water temperature reaches standard levels/values.
  • Page 6: Dimensions And Connections

    1.6 DIMENSIONS AND CONNECTIONS Fig. 1.6/1 MOD. 220 MOD. 300 MOD. 400 A OVERALL HEIGHT 1600 mm 1960 mm 2310 mm B HEIGHT WITHOUT DRAUGHT DIVERTER 1400 mm 1750 mm 2100 mm 720 mm 720 mm 720 mm WIDTH 720 mm 720 mm 720 mm DEPTH...
  • Page 7: Technical Data

    1.7 TECHNICAL DATA MODEL 220-34 300-44 400-44 STORAGE CAPACITY litre NOMINAL INPUT Kcal/h 29.420 37.840 37.840 34,0 44,0 44,0 NOMINAL OUTPUT Kcal/h 25.880 33.530 34.590 30,1 39,0 40,2 COMBUSTION EFFICIENCY 88.5 88.6 91.4 WATER EFFICIENCY 84.2 86.5 TIME TO RECOVER AT 40°C (inlet cold water 15°C) CONTIN.
  • Page 8: Exploded View

    1.9 EXPLODED VIEW Page 8 11/07/00...
  • Page 9 COMPONENTS LIST (for exploded view on previous page) POS. DESCRIPTION POS. DESCRIPTION Magnesium anode ON/OFF Switch Flange cover Terminal board Clean out/inspection flange Instrument control panel Clean out/inspection flange gasket Safety limit thermostat (on) light Plug 1"1/4 Bracket for flue safety bulb (2pcs.) Flue baffle Thermometer Draught diverter...
  • Page 10: General Precautions

    • 2.1 GENERAL PRECAUTIONS 2.2 INSTALLATION • RECOMMENDATIONS This booklet is integral and essential part of the During installation and maintenance, respect carefully the appliance, and it has to be kept with care near the instructions contained in this booklet. Changes of any appliance, for any further consultation.
  • Page 11: Location Of The Appliance

    LOCATION OF THE APPLIANCE The draught diverter A (not assembled - separately supplied) As a type B appliance, it is to be installed to a conventional has to be placed on the upper part of the appliance and fixed flue system exiting the external of the room in which it is in- to the appliance itself through the screws supplied.
  • Page 12: Water Connections

    2.5 WATER CONNECTIONS 2.6 GAS CONNECTION AND REGULATIONS Hot water outlet Connect the supply line to the hot water services, providing a safety valve and isolating cock. MODEL Spare tapping Cold water inlet and stopcock. GAS CONNECTION 1/2” 1/2” 1/2” Drain and recirculation connection.
  • Page 13 The appliance is set at works for the gas and pressure on the data label, according to the following: G20 (H Gas or Natural gas) • inlet pressure: 20 mbar • pressure setting: on • country: Italy, Spain, Portugal, Great Britain, Ireland, Greece.
  • Page 14: Gas Supply Conversion

    CALIBRATION GAS RATE TO THE PILOT BURNER GAS SUPPLY CONVERSION If a calibration gas rate to the pilot burner is needed (i.e. if the flame of the pilot burner is too small or is not well in touch with the thermocouple) work on the C screw pict. 2.6; clockwise to decrease the rate;...
  • Page 15: Electrical Connections

    2.8 ELECTRICAL CONNECTIONS The appliance has to be connected to a 220/240 Volt sin- gle-phase supply mains with an efficient earth. THE MANUFACTURER CAN NOT BE CONSID- ERED RESPONSIBLE FOR ANY DAMAGE OR IN- JURY CAUSED BY FAILURE TO EARTH THE IN- STALLATION TO THE REQUIRED STANDARD.
  • Page 16: Recommendations For The User

    KEY: 3.1 RECOMMENDATIONS FOR THE USER 1 – ON/OFF Switch • Keep this booklet with care near the appliance for any fur- ther consultation. 2 – Water temperature thermostat • For good working and validity of the guarantee, ask for the unit to be serviced annually by a qualified engineer.
  • Page 17: Switching Off

    If the safety thermostat functions again, switch off the unit, shut the gas isolating valve and call a qualified en- gineer. SWITCHING OFF To switch off the water-heater for a short period: • press the 1 switch pict. 3.2/2 to the “O” position (the pilot burner will remain alight).
  • Page 18 THE COMPANY RESERVES THE RIGHT TO CHANGE SPECIFICATIONS AND DIMENSIONS WITHOUT NOTICE STREBEL LTD 1F Albany Park Industrial Estate Frimley Road, Camberley, Surrey, GU16 7PB Telephone: 01276 685422 Fax: 01276 685405 E-mail address: info@strebel.co.uk Website: www.strebel.co.uk Page 18 11/07/00...

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