andrews 10/105 Installation And Service Manual
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andrews 10/105 Installation And Service Manual

Gas fired storage water heaters for natural gas & lpg
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Please read and understand these instructions before commencing installation and leave this manual with the customer for future reference.
Andrews. Built to perform.
Issue 4 21/04/18

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  • Page 1 Please read and understand these instructions before commencing installation and leave this manual with the customer for future reference. Andrews. Built to perform. Issue 4 21/04/18...
  • Page 2 UK users is drawn to their responsibilities under the Health and Safety Regulations 1993. All installation and service on Andrews Water Heaters must be carried out by properly qualified personnel and, therefore, no liability can be accepted for any damage or malfunction caused as a result of intervention by unauthorised personnel.

  • Page 3: Table Of Contents

    Contents General Information .......................... 5 British Standards and Codes of Practice ..................5 Health and Safety Regulations 1993 ....................6 Effectiveness in Combating Legionella ..................... 6 Technical Data ............................7 ErP data ............................10 Installation ............................. 11 Introduction ............................ 11 Location............................
  • Page 4 Appendix ............................... 57 Dismantling, Disposal and Recycling ....................57 © Copyright ..............................57...

  • Page 5: General Information

    General and Safety Information General and Safety Information General Information The Andrews Water Heater has been designed for use with NATURAL GAS & LPG only and is manufactured to give an efficient, reliable and long service life. To ensure the continued, trouble-free operation of your heater at...

  • Page 6: Health And Safety Regulations 1993

    Andrews Water Heaters should only be used in the manner and purpose for which they were intended and in accordance with the instructions in this manual. Although the heaters have been...

  • Page 7: Technical Data

    Technical Data Technical Data Appliance Dimensions Fig. 1 CLASSICflo 10/105, 10/145, 14/175 CLASSICflo 15/270 & 20/360...
  • Page 8 Recommended service clearance Model 10/105 10/145 14/175 15/270 20/360 406.5 406.5 406.5 456.9 509.3 260.4 1041 1267 1319 1492 1140 1222 1439 1515 1646 1220 1303 1540 1595 1776 1143 1270...
  • Page 9 Technical Data CLASSICflo connections & technical data Natural Gas CLASSICflo CLASSICflo CLASSICflo CLASSICflo CLASSICflo Unit Andrews Models 10/105 10/145 14/175 15/270 20/360 Input (gross) 12.3 12.9 17.6 19.0 24.9 Input (net) 11.1 11.6 15.8 17.1 22.4 Output (gross) 9.84 10.32 14.08...

  • Page 10: Erp Data

    ErP data CLASSICflo 10/105 10/145 14/175 15/270 20/360 Declared load profile Water heating energy efficiency class Water heating energy efficiency Annual energy consumption Annual energy consumption Other load profiles for which the water heater is suitable to use and the corresponding...

  • Page 11: Installation

    Installation Introduction The law requires that installation is carried out by a properly qualified person Install in accordance with current British Standard Code of Practice 342 part 2 and British Standards 5440, 5546, 6644, 6700, 6798 and 6891. Location The location chosen for the heater must permit the provision of a satisfactory flue and an adequate air supply.
  • Page 12 *A minimum of 600mm of vertical flue directly above the draught diverter should be provided where possible on all natural draught flue installations. If this dimension cannot be achieved please contact Andrews Water Heaters. Note Please note this is not required where a common flue header is used on multiple installations.
  • Page 13 Fig.4 Fig 4. Common flues may be used on multiple installations Each unit has an only if all the heaters are of the same burner system atmospheric burner and fuel type and should be sized to ensure complete system & uses natural gas.

  • Page 14: Air Supply

    Air Supply Detailed recommendations for air supply are given in BS 5440 part 2. The following notes are intended to give general guidance: Where the heater is to be installed in a room or internal space the heater requires the room or internal space containing it to have a permanent air vent.

  • Page 15: Important

    Important The supply of air to a space housing the heater(s) by mechanical means should be:- Mechanical inlet with natural extraction. Mechanical inlet with mechanical extraction. NB - Natural inlet with mechanical extraction must not be used. Where a mechanical inlet and mechanical extraction system is used, the design extraction rate must not exceed one third of the design inlet rate.

  • Page 16: Water Quality And Treatment

    These anodes are available as an optional extra on all Andrews heaters. In hard water areas, scale formation can occur in hot water systems and hot water heaters and the higher the temperature and volume of water used, the more problematic the scale build- up can be.

  • Page 17: Water Connections - General

    Water Connections - General Fig. 5 Hydrojet® System 3.8.1 The heater is fitted with the Hydrojet® Total Performance System incorporated in the cold inlet dip tube. The tube is designed to increase turbulence and reduce sediment build up, reduce thermal stacking and increase delivery. The upper “jet ports”...
  • Page 18 3.8.3 Water Connections - Unvented Systems Unvented Systems should be fitted by an Approved Installer. Fig. 7 When used in an unvented system, the Andrews Water Heater Balanced cold will supply hot water at a pressure of 3.5bar (50.8lbf/in water take - off provided that this pressure is available at the mains feed.
  • Page 19 3.8.4 Unvented Systems Kit Fig. 9 3.8.5 Unvented Systems Kit - Parts List Ref. Part No. Description 7703928 Unvented Systems Kit Complete 7705036 Pressure Reducing Valve / Check Valve / Expansion Valve 7705037 Expansion Vessel 24L 7705038 Temperature / Pressure Relief Valve 7705039 Tundish 7705040...

  • Page 20: Gas Connections

    Gas Connections THE APPLIANCE MUST ONLY BE USED WITH NATURAL GAS. The installation of the gas supply should conform to the requirements of IM/16 published by British Gas p.l.c. or BS 6891. Jointing compound used must conform to BS 5292 pt 5. Caution Do not apply heat in close proximity to the gas control as this will result in damage occurring to the control.

  • Page 21: 3.11 Wiring Diagram

    3.11 Wiring Diagram Fig. 10...

  • Page 22: Commissioning

    Commissioning Commissioning Commissioning 4.1.1 To Light the Burner Caution Do not operate the water heater until the storage vessel is completely filled with water, with water running from all hot taps. Open the main gas supply valve after all connections to the gas control valve are complete, and test all connections with leak spray.

  • Page 23: Users Safety Guide

    Commissioning Users Safety Guide Note For your safety read before lighting the appliance Warning 1. Always follow manufacturers instructions when lighting the appliance. Failure to do so may result in damage to property, personal injury or loss of life. 2. Before lighting check all round the appliance area for gas.

  • Page 24: Operation

    (ECO). In the event of high water temperature the gas supply will be shut off automatically. The high temperature condition must be identified and rectified before the heater is relit. See Section 7 (fault finding). Note If in doubt contact Andrews Water Heaters...

  • Page 25: Burner Flame Check

    Operation Burner flame check Steel Burner: These models are equipped with self-adjusting air mixture and do not have an adjustable air shutter. At the time of installation and during annual maintenance, a visual check of the pilot and burner flames should be made to determine if they are burning properly.

  • Page 26: Temperature Selection Procedure

    Temperature selection procedure For energy efficient operation of your water heater, the suggested initial temperature setting is 60°C. Warning If the water heater display does not show ‘Operational’ in the ‘Status’ indicator, there may be an operating malfunction with the water heater. If this is the case, a numeric code will be displayed.
  • Page 27 5.4.1 Water heater display and control buttons Temperature Setpoint Shown flashing in display in Degrees F or Degrees C only when temp is adjusted Range 70 - Max. °F Range 21 - Max °C Temperature up button Sequence of operation indicator reads ‘Idle’...
  • Page 28 5.4.3 To decrease Setpoint temperature 1. Depress and hold ‘Temperature Down’ button until desired setpoint temperature appears in the display (Fig. 17). Fig. 17 ‘Setpoint’ 2. ‘Setpoint’ indicator begins flashing in the display after flashes pressing ‘Temperature Down’ button (Fig. 18). Fig.
  • Page 29 5.4.4 To change temperature format in display from °F to °C or °C to °F 1. Press ‘SELECT’ button until °F/ °C is displayed (Fig. 20). Fig. 20 2. Press ‘SET’ button to change temperature format. Symbol °F/ °C will flash (Fig. 21). °F/°C flashes Fig.
  • Page 30 It is recommended that all service work be performed by Andrews Water Heaters Service Team. If the water heater is to remain idle for 30 days or more or is subjected to freezing temperatures while shut off, the water heater and piping should be fully drained (See “To Drain the...

  • Page 31: Introduction

    Whilst giving the following instructions for the care of the Andrews Water Heater, the water heater is a gas appliance and as such should be serviced annually by either Andrews Water Heaters service team or a competent trained service engineer.
  • Page 32 5. Annually remove the inner door and main burner assembly to clean orifices and related parts of any dirt or other foreign material. Inspect the burner ports for obstructions or debris and clean with a wire brush as needed. Wire brush and/or vacuum clean the combustion chamber as needed to remove scale deposits and debris.

  • Page 33: Burner Assembly

    Servicing Burner Assembly 6.2.1 The burner assembly should be cleaned and checked annually 1. Move the gas service cock to "OFF". Isolate from the electrical supply. Unhook and remove the outer door. 2. Disconnect from the bottom of the gas control valve, the pilot tube, gas control wiring loom.

  • Page 34: Gas Control Valve

    Gas Control Valve This should be checked and serviced by an engineer fully conversant with every aspect of this piece of equipment. To change the gas valve it is not necessary to drain down the water heater. Fig. 26 1. Isolate from the electrical supply. Unhook and remove the outer door and remove the inner door by sliding to the side of the heater 2.

  • Page 35: Magnesium Anode

    Magnesium Anode A magnesium sacrificial anode is fitted in the water storage vessel. The function of the anode is to provide additional protection, against corrosion, for the inside of the vessel. The condition of the anode should be checked regularly and replaced.

  • Page 36: Accessing Service Mode On The Water Heater Display (Service Personnel Only)

    Accessing service mode on the water heater display (Service personnel only) The display has a ‘service mode’ for changing the maximum setpoint and accessing information in aiding servicing of the water heater. This procedure is for service and installation personnel only. To enter the Service Mode, follow the steps illustrated below: Warning The following procedure is for service and installation...
  • Page 37 6.6.1 Sequence of modes available in ‘Service Mode’ Error code shown in by pressing the ‘Select’ button water heater display Error Code Number (Display/Reset). This is only shown if there is an operating error in the ‘User Mode’ (Fig. 29). Fig.
  • Page 38 2c. Water Temperature - Lower Sensor (Displays if there are two sensors) (Fig. 33). idle Fig. 33 3. Flame Current of Pilot Flame Sensor (Displays only in the Heating Cycle) (Fig. 34). µA Flame Current Fig. 34 4. Setpoint (Display/Change) (Fig. 35). setpoint idle Fig.
  • Page 39 6. Differential (Display only – shows the differential of the thermostat) (Fig. 37). °F Differential idle Fig. 37 7. Software Version (Display only) (Fig. 38). Soft idle Fig. 38 No current error codes 8. Error Code History (Displays if there are present error codes or up to 10 previous error codes).
  • Page 40 6.6.2 To change the Maximum Setpoint Limit (Max Setpoint) for the temperature setpoint °F Setpoint Warning idle Setting the water temperature to the maximum set point can result in scalding hot water delivered to the domestic hot water outlets. It is highly recommended that the maximum setpoint be adjusted to the lowest temperature possible for the needs of the installation.
  • Page 41 5. 30 Seconds after the last button press, the Water Heater Display will go back to ‘User Mode’. It will read ‘Max Setpoint’ without showing a temperature value if the temperature setpoint is at the maximum setting. The Water Heater Display can be set back to the ‘User Setpoint Mode’...
  • Page 42 6.6.4 To display flame sense current of the pilot flame sensor The pilot flame sense current is available only when the burners are in operation. Flame Current µA Heating 1. Make sure the status displays ‘Heating’ or draw enough hot water to start the burners.
  • Page 43 ‘Setpoint’ flashes 4. To lower the temperature setpoint, press the ‘Temperature Down’ button until the desired temperature is shown on the water heater display (Fig. 52). setpoint °F idle Fig. 52 ‘Setpoint’ stops flashing 5. When the desired setpoint is reached on the water heater display, press the ‘Set’...
  • Page 44 Changes to ‘°C’ 3a. Press ‘Temperature Up’ button to change temperature format to °C (Fig. 56). °C °F/°C ‘°F/°C’ Flashes Fig. 56 Changes to ‘°C’ 3b. Press ‘Temperature Down’ button to change temperature ‘°F/°C’ format to °F (Fig. 57). Flashes Fig.

  • Page 45: How To Reset The Control From Lockout Conditions

    How to reset the control from Lockout conditions Warning The following procedure is for service and installation personnel only. Resetting lockout conditions without correcting the malfunction can result in a hazardous condition. If an error code is displayed (except for #4, low flame sense current), the water heater will be in a ‘lockout condition’...
  • Page 46 6.7.3 Error codes and error history display If there is an operating problem with the water heater, an error code number will appear on the water heater display with ‘Service Needed’ to the right of the ‘Status’ indicator. The error code label is located below the water heater display and the following section in this Installation and Operating Instruction Manual explains the error codes with corrective actions to repair...
  • Page 47 Error code index 4. Press the ‘Temperature Down’ button to change to the previous code index, code #9 (Fig. 67). idle Fig. 67 Stored error code for code index #9 5. Press the ‘Select’ button for code index #9 to view if there are any code numbers (Fig.

  • Page 48: Diagnostic Error Codes And Troubleshooting Procedures For Honeywell Integrated

    Diagnostic error codes and troubleshooting procedures for Honeywell integrated control Error code Definition of code Cause of problem and actions taken to correct Low flame sense Determine flame sense current in the Service mode with the water heater operating. If less than 1.0 microamps, check pilot flame sense rod with emery cloth.
  • Page 49 Definition of code Error code Cause of problem and actions taken to correct Lower sensor Resistance of lower sensor out of operating range. Check readings faulty continuity of wire harness to lower sensor, and if O.K., replace lower sensor. Flame rod shorted Pilot flame sensor rod is shorted to ground.

  • Page 50: Fault Finding

    Fault Finding Fault Finding Fault Finding Fault Action NO IGNITION Power to unit interrupted AT PILOT Thermostat faulty Spark ignition control module faulty FLUE FAN RUNS NO Faulty air pressure switch IGNITION SPARK Faulty spark ignition lead FLUE FAN DOES Power to unit interrupted NOT RUN Faulty fan motor...

  • Page 51: Parts List

    Parts List Parts List General Assembly Fig. 70...
  • Page 52 Introduction...
  • Page 53 Introduction...

  • Page 54: Control Box Assembly

    Parts List Control Box Assembly...

  • Page 55: General Assembly Parts List

    Parts List General Assembly Parts List General Assembly 10/105, 10/145 & 14/175 No. Part No. Description Qty 10/105 10/145 14/175 15/270 20/360 C654 Flue Adapter • • • Draft Diverter (10/105 & 10/145) • • 7703862 Draft Diverter (14/175) •...
  • Page 56 Introduction General Assembly 15/270 No. Part No. Description Qty 10/105 10/145 14/175 15/270 20/360 C657 Flue Adapter (15/270) • Draft Diverter Kit (15/270) • 7703894 7678063 Draft Diverter Kit - Legs only • Draft Diverter Kit - Diverter only (15/270) 1 •...
  • Page 57 Introduction Control Panel No. Part No. Description Qty 10/105 10/145 14/175 15/270 20/360 Control Box Assy (Single Sensor) • • • • • 7703914 Liquid Tight Fex Cord Fitting • • • • • Z256 Power on/off Switch • •...
  • Page 58 Appendix Appendix Dismantling, Disposal and Recycling Warning Only qualified competent persons should remove and dismantle the appliance. Before removing and dismantling please ensure you safely remove the power supply and isolated the appliance from the water and gas connections. Dispose of the appliance correctly according to the laws and regulations in force.
  • Page 60 CLASSICflo range | INSTALLATION AND SERVICE MANUAL www.andrewswaterheaters.co.uk/warranty April 2018 Customer support Monday - Friday 8am - 5pm Sales 0345 070 1055 Technical 0345 070 1057 ICOM Website Energy Association andrewswaterheaters.co.uk Twitter @AndrewsWH Andrews. Built to perform. Issue 4 21/04/18...

This manual is also suitable for:

10/14514/17515/27020/360

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