Hamworthy FERNDOWN Installation, Commisioning And Maintenance Instructions
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Hamworthy FERNDOWN Installation, Commisioning And Maintenance Instructions

Hamworthy FERNDOWN Installation, Commisioning And Maintenance Instructions

Room sealed water heater
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Ferndown
Room Sealed Water Heater
Installation, Commissioning
and Servicing Instructions
IMPORTANT NOTE
THESE INSTRUCTIONS MUST BE READ
AND UNDERSTOOD BEFORE INSTALLING,
COMMISSIONING, OPERATING OR
SERVICING EQUIPMENT

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  • Page 1 Ferndown Room Sealed Water Heater Installation, Commissioning and Servicing Instructions IMPORTANT NOTE THESE INSTRUCTIONS MUST BE READ AND UNDERSTOOD BEFORE INSTALLING, COMMISSIONING, OPERATING OR SERVICING EQUIPMENT...
  • Page 2 01202 662555 Hamworthy offer a service of site assembly for many of our products in instances where plant room area is restricted. Using our trained staff we offer a higher quality of build and assurance of a boiler built and tested by the manufacturer.
  • Page 3 NOTE: THESE INSTRUCTIONS SHOULD BE READ AND UNDERSTOOD BEFORE ATTEMPTING TO INSTALL, COMMISSION OR OPERATE THIS UNIT THE FERNDOWN WATER HEATER IS INTENDED FOR USE AS A COMMERCIAL APPLIANCE & CAN BE OPERATED AS EITHER ROOM SEALED OR OPEN FLUE.

  • Page 4: Table Of Contents

    8.2 Pressure Relief Valve (Safety Valve) 8.3 Open Vent Pipe and Cold Feed Pipe 8.4 Altitude Gauge (Water Pressure Gauge) 8.5 Thermometer 8.6 Drain Valves 8.7 Circulating Pump 8.8 Controls 8.9 Unvented Pressurised Systems 8.10 Boiler Control Scheme HAMWORTHY HEATING LTD FERNDOWN 500001111/C...
  • Page 5 Figure 9.1.2 Wiring Schematic (Main Control Panel)..………………….......... 17 Figure 10.3.1.1 Connection of Flue System (Concentric Ducts Horizontal)..Figure 10.3.1.2 Flue Support Cradle…………………………………. Figure 10.3.2 Connection of Flue System (Concentric Ducts Vertical).... Figure 10.3.3 Connection of Flue System (Separate Ducts)......HAMWORTHY HEATING LTD FERNDOWN 500001111/C...
  • Page 6 Figure 12.1 General Fault Finding………..........…… Figure 12.2 General Fault Finding………..........…… Figure 12.3 General Fault Finding………..........…… Figure 12.4 General Fault Finding………..........…… Figure 13.2 Position of Probes on Burner Assembly........…. Figure 2.2 Performance & General Data Information – LPG Propane..… HAMWORTHY HEATING LTD FERNDOWN 500001111/C...

  • Page 7: Introduction

    For performance data refer to Figure 2.2. 2.0 TECHNICAL DATA 1.3.1 The burner fitted to the Ferndown is of the fan 2.1 The Ferndown data plate giving details of model assisted pre-mix type. Operation is initiated by a full and serial number is located on the inner boiler casing.
  • Page 8 Figure 1.1 Appliance Installation (Typical) HAMWORTHY HEATING LTD FERNDOWN 500001111/C...
  • Page 9 M20 ELECTRIC CONDUIT 200 - CENTRE M20 ELECTRIC CONDUIT LINE FLUE DHW OUT MAINS WATER IN 450 COVER REMOVAL VIEW ON UNDERSIDE CLEARANCE DHW CONNECTIONS CORE DRILL 150 DIA 1660 1540 VIEW ON UNDERSIDE CENTRAL HEATING CONNECTIONS HAMWORTHY HEATING LTD FERNDOWN 500001111/C...
  • Page 10 < 1A δ NOTE ! Boiler outputs based on European test conditions – the maximum T for the Ferndown boiler is 15°C. Flue gas volumes are based on a flue gas temperature of 0°C at 1013mbar HAMWORTHY HEATING LTD FERNDOWN...

  • Page 11: General Requirements

    3.3 Adequate Water Flow CP 342: Centralised hot water supply. Part 2: Buildings The Ferndown is fitted with an integral circulator pump other than individual dwellings. suitably sized to ensure that minimum water rates are maintained through the low water content primary heat I.

  • Page 12: Time Clock Control

    4.1 (See Figures 2.1. & 2.2. for dimensions /clearances 5.6 Boiler Gas System Leak Check and weights.) The location chosen for the Ferndown MUST permit the provision of a satisfactory flue system The incoming mains gas supply must be capable of and an adequate air supply.

  • Page 13: General Requirements

    6.1 Flue System General Requirements 6.4 Maximum Length of Flue Duct. The Hamworthy Ferndown is designed for use with the For Ferndown installations the maximum allowable following flue systems supplied by Hamworthy - see linear equivalent length of straight smooth bore tube Figures 6.1.1, 6.1.2, 6.1.3 &...
  • Page 14 Note: If the terminal is fitted vertically section through concentric adaptor within 2m of areas accessible to people an appropriate terminal guard having a minimun dimension of 250 x 250 x 220 should be fitted. HAMWORTHY HEATING LTD FERNDOWN 500001111/C...
  • Page 15 90° Concentric Bend Ø100/150 45° Concentric Bend Ø100/150 Flue make up piece 100 x 250 long Concentric Adaptor 150 x 100 Eccentric Adaptor Ø80/100 Support Bend Ø80 Flue Enlarged detail showing cut section through concentric adaptor HAMWORTHY HEATING LTD FERNDOWN 500001111/C...
  • Page 16 Ø80/100 location. Terminals for the supply of combustion Support Bend air and for the evacuation of combustion Ø80 Flue products must not be installed on opposite walls of a building. Enlarged detail A HAMWORTHY HEATING LTD FERNDOWN 500001111/C...
  • Page 17 1000 long 500 long Ø100 Single Flue 1000 long Ø100 Wall Clamp Ø100 Modular header or existing flue system if suitable Air Inlet 80 Flue Eccentric Adaptor 80/100 Support Bend 80 Flue Enlarged detail (typical B23) HAMWORTHY HEATING LTD FERNDOWN 500001111/C...
  • Page 18 Horizontally from a terminal on the same wall From the wall on which the terminal is mounted From a vertical structure on the roof Above intersection with roof Note: The above values represent minimum required dimensions. HAMWORTHY HEATING LTD FERNDOWN 500001111/C...

  • Page 19: Surface Temperatures

    See figure 11.1 shall be provided with both high and low level air vents 3) Valves should be fitted adjacent to the Ferndown to HAMWORTHY HEATING LTD FERNDOWN 500001111/C...

  • Page 20: Pressure Relief Valve (Safety Valve)

    8.4 Altitude Gauge (Water Pressure Gauge) The Ferndown is an instantaneous water heater designed The Ferndown is supplied with a factory fitted pressure to run continuously resulting in the primary loop circuit gauge located on the thermal storage tank inside the always being at approximately 80°C.
  • Page 21 The power supply to the appliance should not be latches located along the front of the appliance and lift switched by a time clock. The Ferndown has a remote the covers off. Remove both side panels by gently pull- stop/start loop, which can be used to operate the boiler ing the panels off of the retaining ball studs.
  • Page 22 Figure 9.1.1 Wiring Schematic (Auxiliary Control Panel) FROM MAIN CONTROL PANEL CONNECTOR J19 HEATING CIRCULATION PUMP CONTROL CONTACT RATING - 250V AC 5A (RESISTIVE) 1 2 3 4 5 6 RL1a C NO INTEGRAL DHW FLOW CIRCULATION DETECTION PUMP SWITCH HAMWORTHY HEATING LTD FERNDOWN 500001111/C...
  • Page 23 Figure 9.1.2 Wiring Schematic (Main Control Panel) HAMWORTHY HEATING LTD FERNDOWN 500001111/C...
  • Page 24 Figure 10.3.1.1. Connection of Flue System away from the wall, flue extension packs are available, (Concentric Ducts Horizontal) consult Hamworthy Heating Technical Department for help or assistance if in doubt. Inner / Outer Wall Ensure that the appliance is positioned in its correct Sealing Plates location and that the clearances nominated in figure 2.1.
  • Page 25 Air inlet box Air inlet box ø100 Flue Ø100/150 concentric adapter ø80/100 eccentric Ø80/100 eccentric adapter adapter Flue elbow Flue elbow Mounting bracket Mounting bracket 90° support elbow 90° support elbow Appliance connector Appliance connector HAMWORTHY HEATING LTD FERNDOWN 500001111/C...
  • Page 26 Figure 10.3.4 Connection of Single Pipe (Open Flue) aligned and secure in place by turning the ¼ turn latches. Air inlet Air inlet box terminal ø100 Flue ø80/100 eccentric adapter Flue elbow Mounting bracket 90° support elbow Appliance connector HAMWORTHY HEATING LTD FERNDOWN 500001111/C...
  • Page 27 Remove the clip and bulb from the The Ferndown is fitted with a WRAS approved filling thermostat pocket and carefully applying a heat source loop comprising double check valve and removable to the bulb.
  • Page 28 EXCHANGER CENTRAL HEATING LOW PRESSURE RETURN SWITCH CONNECTION COLD FILL LOOP PRIMARY WATER DRAIN VALVE MOUNTING FRAME COLD WATER INLET DHW FLOW R 1¼” CENTRAL HEATING FLOW CONNECTION LOCATED AT BASE OF THERMAL STORAGE TANK. HAMWORTHY HEATING LTD FERNDOWN 500001111/C...
  • Page 29 Pressure feedback connecting elbow Air inlet pressure sensing point Connect manometer using plastic or rubber tubing Note: Precision manometer must be capable of reading positive and negative pressure to 0.01mbar. Throttle screw PRECISION adjuster MANOMETER HAMWORTHY HEATING LTD FERNDOWN 500001111/C...
  • Page 30 ± 0.01 mbar, do not For LPG Propane firing - See Appendix ‘A’. attempt to adjust the offset unless such equipment is used. Refer to figure 11.5, switch off the boiler HAMWORTHY HEATING LTD FERNDOWN 500001111/C...
  • Page 31 General fault finding is shown in Figures 12.1 to 12.4. If advice. the boiler still cannot be operated satisfactorily after following the chart, consult the local office of Hamworthy 11.7 User Instructions Heating for assistance. When the above is complete, the boiler owner or their 12.1.3 Possible Causes Of Boiler Lockout...
  • Page 32 Is there a control signal Check fan control wiring to the fan? (24V dc across connections, replace pins 1 & 5 of 5way fan boiler main PCB control connector) Continued Replace fan Ref. Fig 12.2 HAMWORTHY HEATING LTD FERNDOWN 500001111/C...
  • Page 33 Is flame sensed by the Check wiring from ignition ignition controller? Is the flame signal above controller to flame probe, (Fascia boiler run indicator the minimum (1.2µA)? replace ignition controller illuminated) Continued Replace ignition controller Ref. Fig 12.3 HAMWORTHY HEATING LTD FERNDOWN 500001111/C...
  • Page 34 PCB Check/replace temperature Boiler cycles on/off Temperature control sensor and/or boiler rapidly? circuit faulty main PCB Continued Check/replace pump, bleed Insufficient water circulation Ref. Fig 12.4 trapped air from the system HAMWORTHY HEATING LTD FERNDOWN 500001111/C...
  • Page 35 2 Flashes Fan Fault (Running at wrong speed or running when should be stopped) 3 Flashes Primary water pressure low 4 Flashes Overheat (high limit thermostat tripped) 5 Flashes Premature flame detection (Flame sensing circuit fault) HAMWORTHY HEATING LTD FERNDOWN 500001111/C...
  • Page 36 13.1 Regular annual servicing is recommended, preferably by a Hamworthy appointed person, to ensure plate heat exchanger. trouble free operation. Although cleaning of flueways...
  • Page 37 NOTE: Each module holds approximately 4 - 5 litres of head screw securing the igniter to the burner flange. water and weighs 50 kg. It is strongly recommended Carefully withdraw the igniter, renew as required and HAMWORTHY HEATING LTD FERNDOWN 500001111/C...
  • Page 38 1) To replace the gas valve/venturi it is preferable to remove the complete fan assembly. 2) Unplug the connectors from the fan (two) and the gas valve. Remove the 4xM4 screws securing the die-cast HAMWORTHY HEATING LTD FERNDOWN 500001111/C...
  • Page 39 Flue Seal 50Ø………………………………………………………………………….. 532511035 Flue Seal 80Ø………………………………………………………………………….. 532511036 Flue Seal 100Ø………………………………………………………………………… 532511037 Viewing port (sight glass)……………………………………………………………… 539907001 For service or spares please contact:- Hamworthy Heating Ltd. Fleets Corner Poole Dorset BH17 0HH Phone No. 01202 662500 Fax. No. 01202 665111...
  • Page 40 – see Figure 11.2. 1.0 INTRODUCTION b) Relevant labels are replaced to indicate the The operation of the Ferndown on LPG-Propane (3 appropriate gas for which the boiler is set up to fire. family)I is similar to that on Natural Gas (2...
  • Page 41 USEFUL USER INFORMATION INSTALLER SITE ADDRESS DATE OF COMMISSIONING: BOILER TYPE BOILER SIZE(S) UNIT NO(S). SERIAL NO(S). FLUE NOTES: HAMWORTHY HEATING LTD FERNDOWN 500001111/C...
  • Page 42 THIS PAGE BLANK HAMWORTHY HEATING LTD FERNDOWN 500001111/C...
  • Page 43 Notes...
  • Page 44 Unit 2, Antrim Line Business Park, Sentry Lane, Newtownabbey BT36 8XX tel: 02890 849826 fax: 02890 847443 Website www.hamworthy-heating.com Associate Companies, Offices and Agents throughout the World. Hamworthy reserves the right to make changes and improvements which may necessitate alteration to the specification without prior notice.

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