andrews HIflo EVO HF 30/300 Installation And Service Manual
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andrews HIflo EVO HF 30/300 Installation And Service Manual

Gas fired storage water heaters for natural gas & lpg
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HIflo EVO range - Gas fired storage water heaters for natural gas & LPG
HF 30/300, HF 48/300, HF 65/300, HF 48/380, HF 65/380
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 21042918

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Summary of Contents for andrews HIflo EVO HF 30/300

  • Page 1 HIflo EVO range - Gas fired storage water heaters for natural gas & LPG HF 30/300, HF 48/300, HF 65/300, HF 48/380, HF 65/380 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 21042918...
  • 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

    How to reset the control from Lockout conditions ................44 Diagnostic error codes and troubleshooting procedures for Honeywell integrated ......47 Fault Finding ............................49 Andrews HIflo EVO ......................... 49 Parts List ..............................50 Water Heater Full Assembly......................50 Combustion Assembly ........................51 Ignition Control Assembly and Harness ..................

  • Page 4: 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 5: 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 6: Technical Data

    Technical Data Appliance Dimensions Figure 1 Table 1 Model HF 30/300 HF 48/300 HF 65/300 HF 48/380 HF 65/380 1600 1645 1645 1861 1861 1118 1118 1118 1334 1334 1194 1194 1194 1410 1410 1556 1556 1556 1772 1772 1416 1416 1416 1607...
  • Page 7 Technical Data Technical Data HIflo EVO connections & technical data Natural Gas Unit Andrews Models HF30/300 HF48/300 HF65/300 HF48/380 HF65/380 Input (gross) Input (net) 33.3 53.1 71.1 53.1 71.1 Output (gross) 30.34 48.38 64.78 48.38 64.78 Efficiency (net CV) Efficiency (gross thermal) Gas Flow Rate (NG) 3.41...

  • Page 8: Erp Data

    Technical Data ErP data HIflo EVO HF 30/300 HF 48/300 HF 65/300 HF 48/380 HF 65/380 Declared load profile Water heating energy efficiency class Water heating energy efficiency 74.5 69.5 67.3 Annual energy consumption 50.5 Annual energy consumption Other load profiles for which the water heater is suitable to use and the corresponding water heating energy efficiency and annual electricity consumption Thermostat temperature setting...

  • Page 9: Location

    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 10 If this dimension cannot be achieved please 1. This flue run 2 & 3 are recommended flue runs contact Andrews Water Heaters. must not be used Note Please note this is not required where a common flue header is used on multiple installations.
  • Page 11 Figure 4 Figure 4 Common flues may be used on multiple installations only if all the heaters are of the same burner system Each unit has an atmospheric burner and fuel type and should be sized to ensure complete system & uses natural gas.

  • Page 12: Air Supply

    Air Supply Detailed recommendations for air supply are given in BS 5440 part 2 and BS6644 for installations exceeding 70kW. 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 13: 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 14: 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. The higher the temperature and volume of water used, the more problematic the scale build- up can be.

  • Page 15: Water Connections - General

    Water Connections - General 3.8.1 Hydrojet System Figure 5 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 16 Figure 7 Unvented Systems should be fitted by an Approved Installer. When used in an unvented system, the Andrews Water Heater will supply hot water at a pressure of 3.5bar (50.8lbf/in provided that this pressure is available at the mains feed. During...
  • Page 17 3.8.4 Unvented Systems Kit Figure 9 3.8.5 Unvented Systems Kit - Parts List Ref. Part No. Description 7703930 Unvented Systems Kit Complete 7705044 Combined Pressure Reducing Valve/Strainer & Check / Expansion Valve 1” E1, E2 & E3 7705037 Expansion Vessel (25 Litre) 7705045 Temperature/Pressure Relief Valve 7705047...

  • Page 18: Gas Connections

    Gas Connections THE APPLIANCE MUST ONLY BE USED WITH NATURAL GAS OR LPG. 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 19: 3.11 Wiring Diagram

    3.11 Wiring Diagram Fig. 9 Issue 4 21042918...

  • Page 20: Commissioning

    Commissioning Commissioning HIflo EVO 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 21: 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 22: Operation

    The water heater can be converted from natural gas to LPG with the use of a conversion kit available from Andrews Water Heaters. Do not attempt to adjust the venturi screws without a properly calibrated CO²/CO combustion analyser.

  • Page 23: Burner Flame Check

    Operation Table 2 Model Reference Input rating Combustion Max Flue Temperature kW/hr °C HF 30/300 8 to 8.5% 230°C °C HF48/300 8.5 to 9% °C HF 65/300 8 to 8.5% °C HF 48/380 8.5 to 9% °C HF 65/380 8.5 to 9% Burner flame check At the time of installation and at periodic intervals (about every 3 months), a visual check of the pilot and burner flames should be...
  • Page 24 Control sequence of operation 5.3.1 Start-up sequence Upon powering up, the control checks for the presence of the resistive plug. If the resistance is in the expected range, the control will begin normal operation after 5 to 8 seconds. 5.3.2 Sequence of operation 1.

  • Page 25: 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 26 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 27 5.4.3 To decrease Setpoint temperature 1. Depress and hold ‘Temperature Down’ button until desired setpoint temperature appears in the display (Fig. 16). Figure 16 ‘Setpoint’ 2. ‘Setpoint’ indicator begins flashing in the display after flashes pressing ‘Temperature Down’ button (Fig. 17). Figure 17 ‘Setpoint’...
  • Page 28 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. 19). Figure 19 2. Press ‘SET’ button to change temperature format. Symbol °F/ °C will flash (Fig. 20). °F/°C flashes Figure 20...
  • Page 29 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 30: Servicing

    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 31 Servicing Annually remove the 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, vacuum, or use a mild detergent solution to clean as needed.

  • Page 32: 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 33: Gas Control Valve

    Servicing 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. 1. Isolate from the electrical supply. Un-latch &...

  • Page 34: Descaling Information

    Servicing Descaling Information When descaling the storage water heater your attention is drawn to the following guidelines. Caution Due to the corrosive nature of descaling fluid, it is essential that suitable protective clothing is used and adequate ventilation available when descaling. It is important to follow descaling manufactures instructions before and during use.

  • Page 35: Accessing Service Mode On The Water Heater Display (Service Personnel Only)

    Servicing 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.
  • Page 36 Servicing 6.5.1 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. 28). Figure 28 Max Setpoint value water heater display...
  • Page 37 Servicing 2c. Water Temperature - Lower Sensor (Displays if there are two sensors) (Fig. 32). idle Figure 32 3. Flame Current of Pilot Flame Sensor (Displays only in the Heating Cycle) (Fig. 33). µA Flame Current Figure 33 4. Setpoint (Display/Change) (Fig. 34). setpoint idle Figure 34...
  • Page 38 Servicing 6. Differential (Display only – shows the differential of the thermostat) (Fig. 36). °F Differential idle Figure 36 7. Software Version (Display only) (Fig. 37). Soft idle Figure 37 No current error codes 8. Error Code History (Displays if there are present error codes or up to 10 previous error codes).
  • Page 39 Servicing 6.5.2 To change the Maximum Setpoint Limit (Max Setpoint) for the temperature setpoint °F Setpoint idle Warning 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 40 Servicing 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 41 Servicing 6.5.4 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 42 Servicing ‘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. 51). setpoint °F idle Fig. 51 ‘Setpoint’ stops flashing 5. When the desired setpoint is reached on the water heater display, press the ‘Set’...
  • Page 43 Servicing Changes to ‘°C’ 3a. Press ‘Temperature Up’ button to change temperature format to °C (Fig. 55). °F/°C °C ‘°F/°C’ Flashes Fig. 55 Changes to ‘°C’ 3b. Press ‘Temperature Down’ button to change temperature ‘°F/°C’ format to °F (Fig. 56). Flashes Fig.

  • Page 44: How To Reset The Control From Lockout Conditions

    Servicing 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 45 Servicing 6.6.3 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 46 Servicing Error code index 4. Press the ‘Temperature Down’ button to change to the previous code index, code #9 (Fig. 66). idle Fig. 66 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 47: Diagnostic Error Codes And Troubleshooting Procedures For Honeywell Integrated

    Servicing 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 48 Servicing Error code Definition of 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 49: Fault Finding

    Fault Finding Fault Finding Andrews HIflo EVO 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...

  • Page 50: Parts List

    Parts List Parts List Water Heater Full Assembly Issue 4 21042918...

  • Page 51: Combustion Assembly

    Parts List Combustion Assembly Issue 4 21042918...

  • Page 52: Ignition Control Assembly And Harness

    Ignition Control Assembly and Harness Issue 4 21042918...

  • Page 53: General Assembly Parts List

    Parts List General Assembly Parts List Water Heater Full Assembly No. Part No. Description HF30/300 HF48/300 HF65/300 HF48/380 HF65/380 Draft Diverter • 7704048 Draft Diverter • • • • 7704049 Assembly Blocked Vent Switch • • • • • 7704052 Surround with Latchers •...
  • Page 54 Ignition Control Assembly and Harness No. Part No. Description HF30/300 HF48/300 HF65/300 HF48/380 HF65/380 Display Mount • • • • • 7704106 Z140 Control Display - Honeywell • • • • • Screws for Control Display • • • • •...

  • Page 55: Appendix

    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 56 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 21042918...

This manual is also suitable for:

Hiflo evo hf 48/300Hiflo evo hf 65/300Hiflo evo hf 48/380Hiflo evo hf 65/380

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