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andrews NEOflo SC25/200, Installation, Operation And Maintenance Manual, Page: 1 / 32

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andrews NEOflo SC25/200 Installation, Operation And Maintenance Manual Download Page 1

M2574C

SC25/200
SC25/300

Please read and understand these instruction before commencing installation and leave this manual with the customer for future reference

INSTALLATION OPERATION AND MAINTENANCE MANUAL

NEO

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High Ef

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 ciency Condensing Stainless Steel Storage Water Heater 

High Ef

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 ciency Condensing Stainless Steel Storage Water Heater 

Summary of Contents for NEOflo SC25/200

Page 1: ...efore commencing installation and leave this manual with the customer for future reference INSTALLATION OPERATION AND MAINTENANCE MANUAL NEOflo High Efficiency Condensing Stainless Steel Storage Water...

Page 2: ...ue types permitted B13 C13 C33 Nominal Net Heat Input 23 7 kW Connection 80 mm Gross Heat Input 26 3 kW FEL Concentric 20 m Nominal Net Output 25 kW FEL Twin Pipe 40 m Gas Consumption 2 4 m h Max Flue...

Page 3: ...ible for their safety Children should be supervised to ensure they do not play with the appliance These instructions apply in the UK and must be followed except for any statutory obligation All instal...

Page 4: ...Figures Tables Page Fig 1 1 User Control 3 Fig 2 1 General Dimensions 7 Fig 3 1 Open Vent Example 9 Fig 3 2 Re Circulation Design 9 Fig 3 3 De Stratification Design 9 Fig 4 1 Unvented Design 11 Fig 5...

Page 5: ...isplay or the Reset button on the Burner Control behind the lower front panel If this requires repeated use there is a fault that will require the attention of a qualified Engineer NEOflo USER S OPERA...

Page 6: ...ramme The period between these runs and the temperature can be se lected by the commissioning engineer Frost Protection This Heater is provided with frost protection and will run if the temperature of...

Page 7: ...2 Specification for installation and maintenance of ventilation provision for gas appliances BS 5546 Specification for installation of gas hot water sup plies for domestic purposes BS 6891 Installatio...

Page 8: ...higher temperature as in the rest of the heater Based on data obtained through experiment this Water Heater can be described as Legionella resistant as it is considered unlikely that at the temperatu...

Page 9: ...15 GENERAL DIMENSIONS Fig 2 1 Model Width Depth Height A B C D E F G 25 200 600 600 1570 130 300 300 226 236 240 226 25 300 730 730 1545 194 365 365 290 233 237 290 Service Clearance all models mm Lef...

Page 10: ...above This problem can be minimised by reducing the water temperature in the heater and by fitting suitable water pre treatment equipment Andrews strongly recommend water pre treat ment is fitted the...

Page 11: ...pansion Vessel 4 Pressure Relief Valve 5 Temp Pressure Relief Valve 6 Drain Cock 1 2 3 4 5 6 Outlets Pump Drain Pump NEOflo DE STRATIFICATION DESIGN NEOflo SECONDARY RETURN DESIGN NEOflo OPEN VENT EXA...

Page 12: ...port is not used it should be sealed with the blanking plug supplied If higher flow rates are required for the cold water services a suitable tee fitting should be fitted to the pipework upstream of...

Page 13: ...E DISPOSAL METHODS NEOflo UNVENTED SYSTEM DESIGN Fig 4 1 Fig 5 2 Fig 5 1 Fig 5 3 Fig 5 4 INTERNAL SINK There is no requirement for an additional trap or air break when connecting drain pipework downst...

Page 14: ...ve already been taken into account Referring to the diagrams Fig 6 2 6 3 6 4 6 5 select a suitable flue system for the particular installation require ment and then calculate the FEL of the system thi...

Page 15: ...uard 5136900 Flat Roof Plate E065 Angle Roof Plate E066 Terminal Guard E105 Condensate Bottle Trap E211 Twin to Concentic Kit 200 300 G101 NB Over 1 5M use flue Condensate Trap Kit 5136153 Debris Guar...

Page 16: ...ion Horizontal Terminal 80mm Flue duct connection HORIZONTAL FLUE EXAMPLE Horizontal Terminal 90 deg x 80mm bend Concentric 90 deg bend Twin Adapter 80mm Air duct connection 125mm length 80mm Air duct...

Page 17: ...September 2015 Fig 6 4 VERTICAL FLUE EXAMPLE 80mm Air duct connection Concentric 90 deg bend Vertical Terminal Twin Adapter 80mm Air duct extension 90 deg x 80mm bend FLUE TERMINAL DIMENSIONS Clip pip...

Page 18: ...tc 300 D Below a gutter or sanitary pipework 75 E Below the eaves 200 F Below a balcony or carport roof 200 G From vertical drain soil pipework 150 H From an internal or external corner 300 I Above gr...

Page 19: ...let may be needed from outside to counter the effect of the fan Room Sealed Type C Where the appliance is installed in a ROOM or COM PARTMENT no ventilation is required GAS SUPPLY The installation of...

Page 20: ...y as detailed above Access to the terminal connections Fig 7 1 Remove the Lower Front Panel the Connection Box is facing you on the left hand side The Connection Box can be completely removed by loose...

Page 21: ...t N N X3 18 X3 15 X3 6 ERROR LED X3 7 HIGH LIMIT SENSOR 2 X3 9 HIGH LIMIT SENSOR 1 X3 17 DHW SETPOINT GND X201 1 X201 3 X201 4 X201 5 X201 2 M GND 12V RPM M N X2 1 X2 4 X2 6 X2 3 X2 5 24Vdc Gnd Open T...

Page 22: ...has ignited a flame is shown on the display Set the Tank Temperature In standby the display shows the temperature of the wa ter in the tank Press the or button and the setpoint temperature is shown an...

Page 23: ...y short circuit polarity and resistance to earth are made All work car ried out should follow guidelines laid down by the I E E OPERATION The Heater requires Mains on both the Live L and Remote Enable...

Page 24: ...n the display Press Service B to step through the information Press Buttons or to alter the setting The Display will step out of this mode if untouched for 60 seconds or the Reset button is pressed De...

Page 25: ...r and replace if damaged The burner should withdraw with the spacer and expose the inside of the combustion chamber Note The burner is marked with a line which should be used to position it It should...

Page 26: ...ull off the electrical connector Undo from the flue connection Replacement is the reverse IGNITION CONTROL Fig 9 4 Remove the lower front panel Remove the cover over the ignition control connec tions...

Page 27: ...d check for gas leaks after the gas valve After five minutes check the rate and combustion is correct to the data table inside front cover Adjust using the throttle screw on the gas valve clockwise to...

Page 28: ...r Heater 26 September 2015 Fig 9 3 Display Panel Removable Cover To access Control Sensor Control Sensor Temperature Pres sure Relief Valve Door High Limit Sensor Tank Inspection Hatch HEATER COMPONEN...

Page 29: ...Test Point Flue Thermostat Condensate Trap Fan Venturi Air Duct Ignition Lead Spark Sense Electrode Gas Cock Ignition Control Cylinder Drain Pipe 22mm Condensate Pipe 41mm Wiring Connection Box Flue...

Page 30: ...10 G063 Electrode Gasket 1 11 G064 Electrode 1 12 G061 Gas Valve Gas Cock O Ring Seal 1 13 G074 Flue Thermostat 1 14 G066 Burner 1 15 5139782 Burner Casting Rubber Ring Seal 1 16 G070 Fan Burner Cork...

Page 31: ...y and annual electricity consumption Thermostat temperature setting C 60 60 Sound power level LWA indoors dB 46 46 Ability to operate only in off peak hours No No Enabled smart control settings Specif...

Page 32: ...Published date November 2015...

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