INSTALLATION GUIDE, OPERATION AND SERVICE MANUAL
Contents
1. eum ANDREWS WATER HEATERS INSTALLATION GUIDE OPERATION AND SERVICE MANUAL NATURAL GAS PROPANE amp BUTANE FIRED STORAGE WATER HEATERS MODELS gt CSC39 CSC59 CSC78 CSC93 CSCL39 CSCL59 CSCL78 h CSCL93 Auto Ignition THIS MANUAL MUST BE KE PI February 2008 Part No E191 HE APPLIANCE amp PlumbNation the nation s favourite for v FREE SHIPPING v SECURE PAYMENTS on all orders over 100 to mainland UK shop online with confidence v FINANCE AVAILABLE v PRICE MATCH spread the cost with low interest rates always get the best deals available we have HUGE REDUCTIONS ON THOUSANDS OF ITEMS Boilers Bathroom suites aa eae eee mrs 33 on eeu duum Pipes amp fittings Wet rooms Cylinders Towel warmers Fires s Bathroom furniture Renewable energy amp much more C un visit our website 2 7 plumbnation co uk 0844 800 3460 Copyright Andrews Water Heaters 2007 pe ANDREWS WATER HEATERS Reproduction of any information in this publication by any method is not permitted unless prior written approval has been obtained from Andrews Water Heaters Andrews Storage Water Heaters have been designed and manufactured to comply with current International standards of safety In the interests of the health and safety of personnel and the continued safe reliable operation of the equipment safe working pra2. Optional Hot Water Service Balanced Cold Water Take Off Cold Water Inlet Valve Secondary Return Check Valve To Drain Fig 12 SECTION 4 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 cock after all connections to the gas control are completed and test all connections using proprietary leak detection fluid Filling the Heater with Water OQ Close the water heater drain valve Open the cold water supply valve Open several hot water taps to allow air to escape from system When a steady stream of water flows from the taps the heater is filled Close the taps and check for leaks at the drain valve temperature pressure relief valve and the hot and cold water connections Draining Water from the Heater If it becomes necessary to drain the heater follow the steps below O O Q N S Depress control panel rocker switch to the OFF position see Operating Rotate and partially depress gas control knob clockwise to OFF position Shut off the gas supply to the heater Close the cold water supply shut off valve Open the drain valve on the water heater Open a hot water tap to allow air to enter the system Refill the water heater as described above Lighting the Burner Ensure gas supply is ON
3. SECTION 3 Where extreme conditions of water hardness exist scale can form in any water heating WATER equipment especially when the heater is working under conditions of constant heavy QUALITY AND demand and at high temperatures TREATMENT Each water heater is fitted with one or more magnesium anode s which protects the tank from corrosion caused by electrolytic action Magnesium anodes are sacrificial in that they corrode as they protect When the anode has eroded to less than 50 of it s original diameter it may not offer protection The anodes should be inspected annually and replaced as necessary Frequency of anode replacement will vary dependent on water quality Andrews Water Heaters offer Correx UP powered anodes as an alternative to the standard magnesium anodes These anodes do not need maintenance or replacement The potentiostat which regulates the current to the Correx anode features an indicator light which shows green to indicate the correct function and red to indicate the malfunction 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 Water treatment is normally recommended when the hardness reaches 100 150ppm 7 10 degrees Clark and above This problem can be minimised by reducing the water temper
4. 276 1250 49 100 150 130 200 130 200 95 Not supplied with 4 these models SECTION 3 INTRODUCTION LOCATION THE LAW REQUIRES THAT INSTALLATION IS CARRIED OUT BY A PROPERLY QUALIFIED PERSON Installations must be carried out in accordance with Gas safety Installation and Use Regulations 1998 Building Regulations The Water Supply Water Fittings Regulations 1999 and any requirements of the local Gas Authority Local Authority Water and Fire Authorities and the current British Standards and Codes of Practice listed in Section 1 The location selected for installation of the heater must allow the provision of a satisfactory flue adequate air supply drain facilities and must be well illuminated A purpose built boiler room or compartment is strongly recommended A manual valve for isolation of the boiler room should be installed in the gas supply it should be clearly identified and readily accessible for use at all times If a purpose built boiler room is not available measures should be taken to protect the heater from damage and prevent any extraneous matter from being stored on or around the heater See BS 6644 Clauses 4 5 and 6 for details The heater must not be installed in any location which contains a bed bath or shower There must be easy access to the boiler room and heater at all times The water heater must be located in an area where leakage from the tank water connections or the
5. IN COMBATING LEGIONELLAE SECTION 2 TECHNICAL DATA DIMENSIONS i i CSC39 i CSC59 i CSC78 CSC93 CSCL39 CSCL59 i CSCL78 CSCL93 AND CLEARANCES Storage Capacity RU aaa c a Reese ERE n TREE ER T Heat Input Gross i I 150 128 U 225 192 300 256 361 672 E uy P 136 480 204 720 a 272 960 327 552 p Fs m E m nr Wee 03 _ i pe D T A ft3 hr 144 6 217 2 i 289 8 349 2 c mt ft3 hr 63 90 120 144 6 Es w e m P po cM un ad x x m ou n M mm Max V Working Pressure 1 i Ibf in Min Working Pressure bar Ibf in 2 2 2 2 Burner Pressure mbar Natural Gas ins wg Burner Pressure I mbar Propane amp Butane ins wg Injector Diameter m i Natural Gas in Injector Diameter LPG 3 WEM West c C HEC ss NE EE eO ET mE EF MEME c T por SWINE oc ET Shipping Dimensions Depth Mains Voltage REM QM MM 220 240 po Frequency shreds ae E ias i ids 26 hee esed eie TECHNICAL DATA SECTION 2 Horizontal or Vertical Flue Cold Water Inlet 10 B S P Horizontal Flue can be rotated 360 500mm Recommended for panel access and switchi
6. PILOT ACTION a Check gas service cock is open b Check water valves are open c Check thermostat setting reset to higher temperature a Check gas burner If possible check heat input with meter and watch b Clean burners and injectors c Flue obstruction Clean flue ways d Check flue and termination position e Check for correct ventilation a Reset thermostat to lower temperature b Thermostat faulty Check and replace if necessary c Main gas valve not closing Clean or replace a Check gas pressures at burner and at gas inlet to heater b Check amount of water being used against recovery rate given on data plate If usage too high more heating capacity needed a Check if this stops when water in heater is hot If yes then condensation is the problem caused by incorrectly designed flue or by tank cooling excessively i e more hot water being used than recovery rate of heater If so more heating capacity needed b If water continues to drip when heater is hot problem is leaking joint or storage vessel a Scale formation in heater consult water treatment specialist Heater must be descaled and suitable water treatment provided to avoid re occurrence a Check gas service cock is open b Check gas control knob is ON c Check ECO for failure a Main gas valve not energised Check for loose contacts b Check for 24V AC at intermittent pilot ignition Replace control if f
7. Turn gas control knob to ON position Using control thermostat select required water temperature Move electrical ON OFF switch to ON After a delay of about 10 seconds the burner will light Check pilot and main gas connections at gas control valve using leak detection fluid whilst burner is alight Turn off seal any leakages then re test SECTION 4 Shutting Off The Burner 1 For long periods only 7 days or more move electrical ON OFF switch to OFF then turn gas control knob to OFF Turn off gas service cock For shorter periods leave heater under thermostat control Gas control i MV Brown Knob PV MM Yellow PV Red 2 Fig 13 Checking Main Burner Pressure Turn gas control knob to OFF Release bleed screw A and connect pressure gauge tube to port A Light burner as described previously Remove valve cap from port B and adjust pressure using exposed screw in accordance with data plate Turn screw clockwise to increase pressure and counterclockwise to decrease If possible check gas rate see Technical Data with meter and watch Refit valve cap to port B 5 Turn gas control to OFF Remove pressure gauge tube and tighten bleed screw A 6 Turn gas control knob to ON and light burner as described above Checking Pilot and Burner Flame Visually check that pilot and burner flames are burning properly 2 The main burner and pil
8. be used or where the natural circulating pressure is insufficient pumped circulation can be employed The heater must be fitted with an open vent pipe which is not valved and which rises continuously to the open vent It should be sized with reference to Technical Data BS 6644 Clauses 9 and 10 and CP 342 Local Regulations and Bye Laws must be observed when installing the system Front Cold inlet Top Hot outlet water connections Optional Front Hot outlet water connection Select the hot outlet location required and using a suitable jointing compound blank off the outlet not required We recommend that the top hot outlet water connection is used Assemble onto the 34 BSP thread the 3 4 BSP coupler socket and drain cock using a suitable jointing compound Assemble onto the 11 2 hot water outlet front the 112 cap end using a suitable jointing compound Water draw off dead legs should comply with CP 342 Part 2 Table 1 and BS 6700 NOTE When using a secondary return circuit see Fig 10 for the location of the return tappings It is recommended that all water connections be made to the heater s using union fittings for ease of servicing Pipe support intervals should comply with CP 342 Part 2 Table 4 After Installation of the water system open the main water supply valve flush the system and fill the heater Open the hot taps to allow air to escape from the system When the system is free of air close the taps and che
9. fitted to the control thermostat It is a temperature sensitive switch which opens at high temperature shutting off gas to the burners including the pilot in an overheat condition When the water has cooled sufficiently the manual reset on the ECO needs to be depressed to allow the heater to be re lit If the pilot goes out and is associated with high water temperature the ECO is probably operational and the cause of overheating should be investigated Temperature Stratification Stacking When small amounts of hot water are drawn repeatedly the thermostat responds to each feed of cold water and activates the main burners Each time this occurs more heat may be put back in the tank than was drawn off As this continues water in the upper level of the tank gets hotter than the thermostat setting This hotter water does not mix completely with the cold inlet water but rises in a chimney effect to the top of the tank Many repetitions of this over a short time period results in accumulation of excessively hot water in the upper part of the tank even when the thermostat control is within limits This is known as stacking To counter this condition an upper thermostat phial is fitted which senses abnormally hot water and shuts down the main burner until the water cools Most modern commercial pipe installations include a circulating pump which keeps hot water moving continuously throughout the heater This stabilises temperatures in the water
10. kit includes a horizontal through the wall flue terminal an elbow flue connector clamps and 2m 6 5ft of coaxial flue pipe The 150mm 6in diameter flue system is also supplied with a 200mm 8in to 150mm 6in reducer for the waterheater flue connection The coaxial flue pipe includes both the flue exhaust inside pipe and combustion air outside pipe The coaxial flue pipe may be cut on the unflared end end without gasket as required for the installation 2 Determine if additional flue components are required for the installation Refer to the flue component table below for available optional flue components 3 Ensure that the flue terminal location complies with requirements described earlier and the Local Gas Authority 4 Measure the vertical and horizontal distance from the water heater flue connection to determine the number of vent flue needed Flue Component Table for 150mm concentric Gin Diameter Flue Size 58 7 kWh 199 999 Btu h Input Models SUPPLIED KIT COMPONENTS Quantity Flue Length Part Description Part Number e EE TE EE e E E un hes EM D p n Tes ec e ew s cor EE id m A SECTION 3 Optional Components for 150mm concentric 6in Diameter Flue Size FLUE Quantity Flue Length Part Description Part Number SYSTEMS We guten T En ree anre AN LE e
11. recommend that a condensate trap is fitted a j Condensate Trap Nipple 1 25mm Compression Coupling or 174 32mm Slip joint Connection 4 25mm PVC Piping Drain Trap To Suitable Drain or Condensate Disposable Pump SECTION 3 The following notes are intended to give guidance Where the heater is to be installed in a room NO VENTS ARE REQUIRED AIR SUPPLY AND Where the heater is to be installed in a compartment permanent air vents are required in VENTILATION the compartment at high and low level These air vents must either communicate with a room or internal space or be direct to outside air The minimum effective areas of the permanent air vents required in the compartment are as follows Air Vents Areas Position of Air Vents Air from Room or Internal Space x Air Direct from Outside ne set u ie uem ee SRI pu tent Rs 6 faste pe uUum uen m E S m Un Internal Space No Requirement for Ventilation Note Both air vents must communicate with the same room or internal space or must both be on the same wall to outside air Air vents should have negligible resistance and must not be sited in any position where they are likely to be easily blocked or flooded or in any position adjacent to an extraction system which is carrying flammable vapour Consideration must be given to the position of the high l
12. the design and operation of water systems with reference to avoidance of factors that favour colonisation by Legionellae bacteria These factors include stagnation lukewarm conditions 20 C to 45 C and the accumulation of debris scale and corrosion in the base of tanks and calorifiers Andrews Water Heaters has commissioned an independent evaluation of their products to investigate their resistance to build up of legionellae bacteria Experiments were conducted to determine whether following a substantial challenge by legionellae pneumophilia after overnight and stagnation conditions the system was rendered free from viable recoverable legionellae It was found that at 619 following a challenge of approximately 107 organisms per litre within one hour more than 99 999 of organisms had been killed After a subsequent stagnation period sampling did not reveal any residual contamination The design of the base of the water heater precludes legionellae colonisation even after build up of debris The burner positioning ensures that the water at the bottom of the heater reaches the same or higher temperature as in the rest of the heater Based on data obtained through experiment the Andrews Water Heater can be described as legionellae resistant as it is considered unlikely that at the temperature tested the organism would colonise the water heater and present a possible health risk HEALTH AND SAFETY REGULATIONS 1993 EFFECTIVENESS
13. 3 Expansion Valve Cold Water Inlet C1 Pressure Reducing Valve Strainer Balance Cold Water Take off if required NB Tees elbows stop valves and pipework not supplied C7 Tundish P Item C5 must be fitted into C6 and fitted on the hot water outlet nipple See fig 12 When assembling items C1 and C2 ensure that the flow arrows marked on the components are pointing in the direction of flow i e towards the water heater The cold water for services may be drawn from the 22mm compression port on item C1 a The water pressure at this point will be similar to that available at the hot water outlet of the water heater If port a is not used it should be sealed with the blanking plug supplied SECTION 3 If higher flow rates are required for the cold water services a suitable tee fitting should WATER be fitted to the pipework upstream of item C1 CONNECTIONS The pipework fitted to the tundish outlet should be one size larger than the outlet pipe of the safety device and should be terminated at a suitable drain See Building Regulations 1992 Approved Document G3 All fittings and materials must be suitable for use with drinking water and listed in the current Water Research Centre Materials and Fittings Directory Installation of unvented hot storage water systems must comply with Part G3 of the Building Regulations 1992 Typical water service layout for unvented system is shown in Fig 12 ai A
14. ION DUE TO THE CORROSIVE NATURE OF DESCALING FLUID IT IS ESSENTIAL THAT SUITABLE PROTECTIVE CLOTHING IS USED AND ADEQUATE VENTILATION AVAILABLE Turn gas control to OFF and isolate gas supply Close water inlet valve and drain heater tank Remove magnesium anode s It is recommended that new anode s is are fitted Add suitable hydrochloric acid based descale fluid The requirement is normally 10 litres or more dependent on amount of limescale present After a minimum of one hour restore gas supply and turn on main gas burner for 2 minutes maximum Isolate gas supply and drain descale fluid through drain port Open cold water feed valve and fill heater tank Drain and flush out heater for 20 minutes minimum Replace anode s 0 Restore gas supply and re light heater UT NO ONO IMPORTANT Remove Correx anodes if fitted and plug off the connections using 3 4 BSP plugs Re fit the Correx anodes when the descaling operation is complete Re light and carry out commissioning checks as detailed in Section 4 Commissioning Set the thermostat control to the required user setting SECTION 7 WATER DOES NOT GET HOT HEATER SOOTING YELLOW FLAME POOR COMBUSTION WATER TEMPERATURE TOO HIGH NOT ENOUGH HOT WATER WATER DRIPPING FROM BASE OF HEATER RUMBLING NOISE CONTINUOUS IGNITION NO PILOT FLAME PILOT LIGHTS BUT MAIN BURNER DOES NOT NO IGNITION AT
15. Qty 150mm 6in Flue Kit 1 90 Elbow with Clamp 2 1 mtr Flue with Clamp 3 Horizontal Flue Terminal 4 Wall Clamp Not Shown 5 Large Stepped Adaptor Connection Clamp 6 200mm 8in to 150mm 6in Reducer 7 1 mtr Cutable Flue with Clamp 8 0 5 mtr Flue with Clamp 9 Vertical Flue Terminal 10 Condensate Trap Tee 11 Flat Roof Plate 12 Angled Roof Plate 13 Horizontal Flue Outlet Terminal Guard 14 45 Elbow with Clamp Note Extra lengths of flue tubing can be supplied to suit each installation requirement Also extra 90 and 45 elbows can be supplied Ref Description Qty 200mm 8in Flue Kit 1 90 Elbow with Clamp 2 1 mtr Flue with Clamp 3 Horizontal Flue Terminal 4 Wall Clamp Not Shown 5 Large Stepped Adaptor Connection Clamp 6 1 mtr Cutable Flue with Clamp 7 0 5 mtr Flue with Clamp 8 Vertical Flue Terminal 9 Condensate Trap Tee 10 Flat Roof Plate 11 Angled Roof Plate 12 Horizontal Flue Outlet Terminal Guard Extended 13 45 Elbow with Clamp Note Extra lengths of flue tubing can be supplied to suit each installation requirement Also extra 90 and 45 elbows can be supplied SECTION 8 PARTS LIST AND ILLUSTRATIONS CSC39 59 78 amp 93 CSCL39 59 78 amp 93 Unvented System Kit N Unvented System kit Xe CSC39 59 78 amp 93 CSCL39 59 78 amp 93 Parts List Description Qty Unvented Systems Kit Complete Combined Reducing Valve Strainer Check Valve Exp
16. ansion Valve Expansion Vessel 25 Litre Temperature Pressure Relief Valve 172 17 Square Equal Tee Tundish from Expansion Valve and T P Valve I I I Wall Mounting Kit Optional Hose Assembly 1 Wall Bracket Assembly 1 5 Notes ANDREWS WATER HEATERS Andrews Water Heaters Wood Lane Erdington Birmingham B24 9OP Tel 0845 070 1055 Fax 0845 070 1059 Sales 0845 070 1056 Technical 0845 070 1057 Service 0845 070 1058 Email andrews baxigroup com www andrewswaterheaters co uk
17. ature in the heater and by fitting suitable water pre treatment equipment When installing Andrews Water Heaters in hard water areas we would recommend that a water treatment specialist is consulted B Hydrojet System Fig 9 Tank b All models now incorporate the E new Mini Hydrojet system on cold inlet side connections This system ensures water is directed onto the tank base which minimises sediment build up from day one of installation Hydrojet Inlet Nipple Front Cold Inlet P Connection The heater is fitted with the Hydrojet Total Performance System incorporated in the cold inlet nipple The system is designed to increase turbulence and reduce sediment build up reduce thermal stacking and increase delivery SECTION 3 WATER CONNECTIONS VENTED SYSTEMS The water heater must be fed from a cold water feed cistern or static water tank A safety valve must be fitted as specified in BS 6644 Clause 9 The safety valve must be fitted either directly to an upper tank tapping or not further than 1 metre along the outlet flow pipe of size not less than the safety valve There must be no valve separating the heater from the safety valve The size of the discharge pipe must be not less than the nominal size of the safety valve outlet It should be self draining and any water discharged must be visible and create no hazard to persons in or about the building A low pressure open vented system can
18. aulty c Check for 24V AC at main gas valve terminals Replace valve if faulty a Electrical ON OFF switch is not ON b Thermostat set too low c Power to unit interrupted SECTION 8 PARTS LIST AND ILLUSTRATIONS PARTS LIST AND ILLUSTRATIONS SECTION 8 CSC39 CSC59 CSC78 CSC93 Model CSCL39 CSCL59 CSCL78 CSCL93 Ref m A1 Fan Motor Assembly 1 A2 Sacrificial Anode 4 A3 Flue Baffle 9 A4 Control Circuit Board 1 A5 pn OffSwitch 1 A6 Data Badge Nat Gas 1 A7 ipple 1 4 BSP 1 A8 Hydrojet Cold Inlet 1 7 BSP 1 A9 Pressure Switch 1 A10 Cleanout Pad Seal 1 A11 leanout Pad 1 A12 Cleanout Pad Cover 1 A13 Drain Tapping Connector 1 A14 Drain Cock BS2879 X 1 A15 Z 1 A16 1 A17 1 A18 Fan Mounting Flange 1 A19 ipple 1 x 12 BSP 1 A20 Bulkhead Union 1 A21 Air Vent Pipe 1 B1 Burner bar 5 7 B2 Pilot Assembly 1 B3 Injector 2 4mm Nat Gas 5 Injector 2 9mm Nat Gas 5 Injector 2 9mm Nat Gas 7 Injector 3 1mm Nat Gas 7 Injector 1 65mm LPG 5 Injector 1 95mm LPG 5 Injector 1 90mm LPG 7 Injector 2 1mm LPG 7 B4 Gas Valve 1 B5 Gas Cock 4 BSP 1 B6 ontrol Thermostat with Remote Phial and ECO 1 B7 Combustion Box Cover 1 as Valve Assembly complete with fittings LPG C2 Pilot Assembly LPG 1 SECTION 8 PARTS LIST AND ILLUSTRATIONS 150mm 6in Flue Kit 200mm 8in Flue Kit PARTS LIST AND ILLUSTRATIONS SECTION 8 Ref Description
19. ck for leaks at the thermostats drain cock and pipe connections on the heater Typical water service layout for a vented system is shown in Fig 10 SECTION 3 WATER CONNECTIONS Open Vent VENTED SYSTEMS Stop Valve Overflow 1 a y H Cold Water Feed Optional Hot Water Service Cold Water ILL Id Bim s z Cistern za Hot Water Service Secondary Return Cold Water Inlet Valve Fig 10 Typical Installation X Vented System SECTION 3 WATER CONNECTIONS UNVENTED SYSTEMS Fig 11 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 51Ibf in2 provided that this pressure is available at the mains feed During conditions of no flow system pressure may rise to a maximum of 6bar 87Ibf in2 whilst the burner is operating When testing the system it is recommended that a maximum test pressure of 8 6bar 125 Ibf in2 is employed The heater can be used on unvented hot water storage systems with the addition of an Unvented Systems Kit part number B228 available from Andrews Water Heaters See Parts List Page 37 The Wall mounting assembly is available as an optional extra C N C5 OPTIONAL PARTS Temperature Pressure Relief Valve C6 1 Sq Tee Cold Water Inlet of C2 Check Valve C
20. combination temperature and safety valve will not result in damage to the area adjacent to the water heater When such locations cannot be avoided a suitable drain tray must be installed under the water heater The drain tray must be no deeper than 38mm 1 5in and have a minimum length and width of 100mm 4in wider than the heater The drain tray must be piped to an adequate drain using 20mm 0 75in diameter pipe angled for proper drainage Access must be provided to the front of the water heater and adequate clearance for it s servicing and operation The floor on which the heater is installed must be flat level and of sufficient strength to withstand the weight of the heater when filled with water and should satisfy the requirements of the Local Authority amp Building Regulations Any Combustible material adjacent to the heater must be so placed and shielded as to ensure that it s temperature does not exceed 66 C 150 F The minimum clearance to combustibles for the heater Is 50mm 2in from the front of the burner access box Zero clearance from the air intake boot and vent tubes 300mm 12in from the direct vent terminal A minimum of 726mm 30 inches from the burner access panel shall be provided for inspection and servicing All service clearances to the water heater must be maintained as specified in the CSC Range Installation and Design Guide SECTION 3 The installation of the gas supply must conform depending o
21. ctices must be employed at all times The attention of U K users is drawn to their responsibilities under the Health and Safety Regulations 1993 All installation and service on the Andrews Water Heater 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 The Andrews Water Heaters policy is one of continuous product improvement and therefore the information in this manual whilst completely up to date at the time of publication may be subject to revision without prior notice Further information and assistance can be obtained from Andrews Water Heaters Wood Lane Erdington Birmingham B24 9QP Tel 0845 070 1055 Fax 0845 070 1059 Sales 0845 070 1056 Technical 0845 070 1057 Service 0845 070 1058 Email andrews baxigroup com www andrewswaterheaters co uk THE ANDREWS WATER HEATERS COVERED IN THIS MANUAL ARE FOR USE WITH NATURAL GAS OR LPG PROPANE OR BUTANE GAS ONLY SECTION 1 GENERAL AND SAFETY INFORMATION General Information 2 British Standards and Codes of Practice 2 Health and Safety Regulations 1993 3 Effectiveness in Combating Legionellae 3 SECTION 2 TECHNICAL DATA 4 SECTION 3 INSTALLATION Introduction 6 Location 6 Gas Supply Natural Gas 7 Gas Supply LPG Propane or Butane Gas 8 Electrical Supply 10 Flue Systems 11 Air Supply and Ventilation 17 Water Quali
22. current BUILDING REGULATIONS The WATER SUPPLY WATER FITTINGS REGULATIONS 1999 Additionally installation should be performed in accordance with all relevant requirements of the Gas Supplier Local Authority and recommendations of the British Standards and Codes of Practice detailed below BRITISH BS 6700 1997 STANDARDS AND CODES OF PRACTICE Specification for design installation testing and maintenance of services supplying water for domestic use within buildings and their curtilages This standard supersedes the following British Standards and Codes of Practice CP99 CP310 CP324 202 CP342 Part 2 Centralised Hot Water Supply BS 5440 2000 Installation of flues and ventilation for gas appliances of rated output not exceeding 60kW BS 6644 Installation of gas fired hot water boilers of rated inputs between 60kW and 2MW BS 5546 1990 Installation of gas hot water supplies for domestic purposes BS 6891 BS 7206 1990 I M2 I M11 I M16 IGE UP 10 Pt 1 Edition 2 NOTE Installation of low pressure gas pipework of up to 28mm in domestic premises Specification for unvented hot water storage units and packages Purging procedures for industrial and commercial gas installations Flues for commercial and industrial gas fired boilers and air heaters Notes on installation of gas pipework excluding 25mm and below Installation of Gas Appliances in Industrial and Commercial Premises Consideration should be given to am
23. e pipe to the flue terminal connection with the gasketed end of the flue pipe towards the flue terminal Insert the flue pipe into the flue terminal connection and grasp the end of the flue pipe while twisting and pushing the pipe until inserted all the way into the flue terminal e Connect the outside pipes together using the gasketed clamps provided The flue pipes have ribs located near each end When the flue piping is connected the gasketed clamps shall cover the ribs and joints of the connecting flue tubes Support each pipe section with hangers attached to the supporting joists in the wall or ceiling f Continue connecting pipe sections together with clamps and supporting with hangers SECTION 3 FLUE SYSTEMS Fig 7 a Straight End E Ungasketed Gasket End Ribs Locked Beneath SN Gasketed Clamp P g The last pipe section may be cut to fit the distance required to reach the water heater flue connections First install the supplied condensate trap with crimped end into the gasketed end of the elbow horizontal flue installations and clamp the condensate tee and elbow together Then install the crimped end of the elbow into the flue connection of the water heater On vertical installations install the the crimped end of the condensate trap directly onto the water heater flue connection The 58 7kWh models require the installation of a flue reducer supplied into the water heater flue assembly before attachi
24. endments or updates to the above standards GENERAL AND SAFETY INFORMATION SECTION 1 It is the duty of manufacturers and suppliers of products for use at work to ensure so far as is practicable that such products are safe and without risk to health when properly used and to make available to users adequate information about their safe and proper operation 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 manufactured with paramount consideration to safety the basic safety precautions highlighted in this manual must be observed by the user It is imperative that all users of the heater must be provided with all the information and instruction necessary to ensure correct and safe operation Water systems in buildings have been associated with outbreaks of Legionnaires Disease particularly in health care facilities where occupants are significantly more susceptible to infection In recognition of the risks in hospitals a Code of Practice for the Control of Legionellae in Health Care premises has been issued by the Department of Health 1991 Codes of Practice applicable to other premises have been published by other organisations principally the Health and Safety Executive HS G70 and the Chartered Institute of Building Services Engineers CIBSE TM13 All Codes of Practice draw attention to
25. evel ventilation opening A high level vent must not be sited within 300mm 1ft measured vertically of the flue terminal Grilles and louvres should be so designed that high velocity air streams do not occur within the space housing the heater s SECTION 3 AIR SUPPLY AND VENTILATION IMPORTANT 1 The effective area requirements specified in the table are related to the maximum heat input of of the heater s and are equivalent to those specified in BS6644 and IGE UP 10 Pt 1 2 The free area of the grilles should not be less than the size of the recommended ventilation opening 3 The supply of air to a space housing the heater s by mechanical means should be a Mechanical inlet with natural extraction b 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 All mechanical ventilation systems must be fitted with automatic gas shut off safety systems which cut off the supply of gas to the heater s in the event of failure of either the inlet or extract fans The requirements for air supply by mechanical ventilation are given in B56644 Clause 19 3 and IGE UP 10 Pt 1 The permanent air vents shall be sited away from the extract fans It may be necessary to increase the ventilation area to compensate for the extractor fan
26. h the wall opening to the rib closest to the intake air openings of the terminal even with the outside wall UN Hole through Wall flue Terminal Outer Wall Mount Plate i ka Wall Anchor 4 Places Screw Supplied places Intake Air Openings S Must Face Ground ui C Slide the outside wall plate over the flue terminal and fasten to the wall with four screws Depending on the wall construction wall anchors may be required to reinforce the screws d Install inside wall plate on the inside wall and secure with four screws Depending on wall construction wall anchors may be required to reinforce the screws 7 Hole through Wall Flue Terminal Inner Wall Mount Plate e am AF Wall Anchor bur 4 Places Screw supplied a dcs 4 Places E SECTION 3 2 Vertical Flue Terminal Through the Roof Optional FLUE a Determine the exact location where the roof flue terminal will exit the roof ensuring SYSTEMS the flue system clears all obstructions For pitched roofs the flue cap must be the distance above the roof line as specified 300mm to base of Flue Clamp minimum The top of the roof terminal may extend up to 760mm 2 5ft above the roof line as required b Run the coaxial flue system to the proper distance below the roof sheathing required for the correct distance of the roof terminal above the roof surface See the following sections on
27. heater tank and throughout the pipe system SECTION 6 INTRODUCTION PRE SERVICE OPERATIONS ANNUALLY SIX MONTHLY Servicing must be carried out by a properly qualified person Whilst giving these instructions for the care of the Heater it is recommended that checks are carried out by the installer or local gas authority at least annually Ensure good ventilation by keeping the heater free of extraneous materials and clear of dust and lint Keep pipework flue and tops of heaters clear of any combustible materials A water softener or lime inhibitor should be employed in hard water areas The heater should be inspected every few months via the hand hole cleanout and lime or silt deposits removed Failure to do so will shorten heater life and may invalidate the warranty NOTE The cleanout hole gasket must be renewed whenever the cover is removed Before servicing carry out the following operations 1 Turn off the gas service cock 2 Turn off the cold water supply to the heater 3 Turn on the hot water draw off taps served by the water heater or for multiple installations turn off the hot water outlet connection valve and secondary return valve 4 Drain down using the drain valve on the heater Annual checks of the ignition systems temperature controls and any other controls are necessary to ensure continued safe and efficient operation The entire combustion system must be sealed for this water heater to function c
28. installing the rest of the flue system c Cut a minimum 165mm 6 5in diameter hole for the smaller flue size or a 216mm 8 5in minimum diameter hole for the larger flue size centred in the desired location for the roof terminal See Fig 6 d Centre the roof flashing over the hole using either the flat roof flashing or universal flashing for pitched roofs e Slip the storm collar supplied with the roof flashing kit over the outside of the flue terminal and align with the flue pipe end below roof opening Insert the terminal into the flue pipe f Fasten the roof flashing with nails Seal the flue terminal and flashing to the roof g Install the gasketed clamp around the joint between the flue terminal and flue pipe EA Flue Terminal a Flat Roof Storm Collar E pru b Roof Flashing p Nail amp Seal d Nai ea Flue Terminal Pipe N Flue Terminal Pipe Hole Through Roof yet Flue Pipe C From Water Heater p Fig 6 INSTALLING FLUE PIPING SECTIONS a The coaxial flue pipe sections are designed to fit tightly together and seal with the integral flue pipe seal and supplied pipe clamps No silicone caulk or special tools are required b All flue sections and fittings come complete with silicone flue pipe gaskets and outside gasketed pipe clamps for making air tight connections between the flue pipe connections d Raise the flu
29. int along it s length the diameter is reduced to half or less of original Particular attention should be paid to the ends 3 If the anode is encrusted with limescale it should be either wire brushed to reveal bright metal or replaced Where Correx anodes are fitted no maintenance is necessary SECTION 6 COMBINED TEMPERATURE AND PRESSURE RELIEF VALVE CLEANING THE STORAGE VESSEL RESTART Check the condition and operation of this component at least once a year to ensure it is free from limescale deposits Lift the lever at the top of the valve several times until the valve seats properly without leakage and operates freely Clean or replace as necessary The storage vessel should be checked and cleaned annually Scale formation in the base of the vessel may occur particularly in hard water areas and is normally associated with high usage and high water temperatures It is characterised by a rumbling noise when the main burner is lit Scale formation in the base of the vessel will affect the efficency of the water heater and reduce the life of the storage vessel It should be noted that the failure of the storage vessel due to scale formation on the base will not be covered by the terms of the warranty Any scale formation which cannot be removed by normal means of cleaning should be removed by chemical descaling See below Descaling When descaling the heater attention is drawn to the following guidelines CAUT
30. ipe union below the gas valve e Remove the three screws securing the gasketed manifold pipe flange on the left side of the combustion box f Remove the burner access panel from the front of the combustion box g Carefully remove and push the pilot wire grommet into the combustion box with the pilot wires h Disconnect the pilot tube fitting on the inside bulkhead fitting of the combustion box i Unthread the gas pipe assembly from the manifold inside the combustion box j Remove the screw securing the burner rack on the top right panel of the combustion box Slide out the burner rack assembly To re install the burner rack reverse the above procedures The gas control valve should be checked and cleaned Remove any debris from the valve inlet filter using a soft brush or by blowing with low pressure air GAS CONTROL VALVE After servicing Check 1 Soundness of any gas joints broken or disturbed and seal any leaks 2 Burner pressure gas rate at maximum thermostat setting 3 Operation of heater is correct Reset controls to user s requirements Magnesium sacrificial anode s is are fitted to the top of the storage vessel The anode MA will prevent corrosion of the storage vessel Anode condition should be checked annually GNESIUM and replaced if excessive wear is present ANODES 1 Withdraw each anode using an 1116 in AF socket spanner A new anode measures 21mm diameter 2 An anode should be replaced if at any po
31. lue surrounded by the outside pipe The flue system incorporates both combustion air supply and the flue exhaust The flue system component which is outside the building and takes in the combustion air supply and discharges the flue products whilst keeping them separate is referred to as the direct flue terminal WARNING The direct flue system must be properly installed Failure to do so could result in property damage or personal injury DO NOT install any damaged components Contact Andrews Water Heaters for replacement parts The flow of combustion air must not be restricted Keep direct flue terminal openings clear of any objects likely to cause flow restriction Direct Flue Terminal Shall terminate at least 1 5m 5ft above any forced air inlet located on the same wall This provision does not apply to the combustion air intake of a direct flue appliance or the circulating air inlet and flue gas discharge of listed outdoor appliances Shall be installed with at least a 300mm 12in flue termination clearance from any air opening into a building The bottom of the direct flue terminal shall be located at least 300mm 12in above ground Consideration should be given to the location of the flue terminal The flue terminal should be located where the discharge of flue products does not cause a nuisance Consideration should also be given with regard to noise that may be emitted by this flue system In all cases the flue termination m
32. n it s size to the GAS SUPPLY requirements of British Standards and Codes of Practice listed in Section 1 of this manual NATURAL GAS A gas meter will be connected to the service pipe by British Gas plc or it s authorised contractor The meter and service pipe should be checked by British Gas or it s authorised contractor to ensure that they are adequate to deal with the gas supply to the water heater s in addition to any existing or additional requirements CAUTION DO NOT APPLY HEAT IN CLOSE PROXIMITY TO THE GAS CONTROL THERMOSTAT AS THIS WILL RESULT IN DAMAGE OCCURRING TO THE CONTROL Fit the gas cock immediately upstream of the gas control valve using a suitable jointing compound and connect to the gas supply An inlet nipple and m f elbow is factory fitted to the gas control valve to avoid possible damage UN Gas Cock Nippl N M F Elbow BSP Thread U PT Thread E Fig 1 Where the water heater s is are installed in a boiler house or purpose built compartment a manually operated valve for the boiler house must be fitted in accordance with the Gas Safety Installation and Use Regulations 1998 The valve must be easily identified and readily accessible After installation the system should be pressure tested for soundness and purged in accordance with BS 6891 or IM 2 and IM 5 as appropriate SECTION 3 GAS SUPPLY PROPANE OR BUTANE Contact Calor Gas who will provide the appropriate type a
33. nd size of LPG supply vessel and ensure it s safe location and installation The installation of the gas supply must conform to LPGA Code of Practice 22 LPG Piping Systems Design and installation plus the requirements of British Standards and Codes of Practice listed in Section of this manual PROPANE 37mbar 14 86 in wg BUTANE 28mbar 11 26 in wg When using propane or butane cylinders connect a minimum number of cylinders as listed below together with a manifold before connecting to the union Use a minimum pipe size of bore Two Cylinders CSCL39 and CSCL59 Three Cylinders CSCL78 Four Cylinders CSCL93 WARNING PROPANE AND BUTANE CYLINDERS MUST BE USED AND STORED IN ACCORDANCE WITH THE HIGHLY FLAMMABLE LIQUIDS AND LIQUIFIED PETROLEUM GASES REGULATIONS 1972 AND SHOULD COMPLY WITH LPGA CODE OF PRACTICE 7 STORAGE OF FULL AND EMPTY LPG CYLINDERS AND CARTRIDGES SECTION 3 Regulator Set to give 37 mbar BULK STORAGE 14 86 Wg 1 Heavy Steel Sleeved MEO Pipe Through Wall IN STALLATI N Regulator normally G fitted at tank posu MER E control at entry 3 point to building To bulk Supply Steel Liner sealed to pipe at inside end Installation of Propane supply 3 4 Spring loaded gas cock Pigtail PES CYLINDER Automatic change over 1 Heavy Steel Sleeved INSTALLATION device Pipe Through Wall Ga
34. ndows 2 Do not operate electrical switches 3 Extinguish any naked flames 4 Contact gas supplier if the smell of gas persists FOR YOUR SAFETY Do not store or use petrol aerosol or other flammable vapours or liquids in the vicinity of this or any other atmospheric gas appliance WARNING Hotter water increases the risk of scalding Before changing the temperature refer to the instruction manual or data label Hot water can produce third degree burns in 6 seconds at 1409F 609C 30 seconds at 130 F 54 C OPERATION SECTION 5 When properly installed and adjusted the heater will require minimal attention Should it become necessary to completely drain the heater follow instructions given in Section 4 Commissioning Whenever the heater is filled with cold water condensation will form on the storage vessel surfaces when the burner is lit This is normal and will disappear when the heater warms up Operating Sequence 1 When the control thermostat senses too cool water a signal is sent to the control sequence unit 2 When the pilot solenoid opens gas is allowed to pass to the pilot and simultaneous ignition begins 3 When the pilot flame is established the main gas solenoid is allowed to slowly open and the main burners or burner is lit 4 When the control thermostat is satisfied both pilot and main gas solenoids are closed ECO Energy Cut Off The heater is equipped with an ECO Energy Cut Off device
35. ne SEDE E ee BEEN Ni HE d FU BC E uud eom Sa E en RR P ues s E SS s T Ge flue terminal with adjustable cap E207 EE c n deg 150mm 6in dia vent size E208 GS Wa UE pj e Flue Component Table for 200mm concentric 8in Diameter Flue Size 88 kWh 300 00 Btu h and 105 6kW 360 000 Btu h Input Models SUPPLIED KIT COMPONENTS Quantity Flue Length Part Description Part Number s ndi a Du e oe D Se vr er E Connection Clamp E237 Optional Components for 200mm concentric 8in Diameter Flue Size Quantity Flue Length Part Description Part Number SU neus ge le ME io et a er pem FE 05mtr Flue Pipe with clamp E2144 Fy p se eg ees ee NIMM ET e pes M ACHSE Nu flue terminal with adjustable cap E217 FENG s ic e Bes Vedi 150mm 6in dia flue size E218 DENM UNUS NE e b em SECTION 3 FLUE SYSTEMS Fig 4 INSTALLING THE FLUE TERMINAL NOTE The horizontal flue terminal supplied may be used through outside walls up to 600mm 24in thick 1 Horizontal flue Terminal Through the Wall supplied a Cut an opening of at least 165mm 6 5in diameter through the outside for the 58 7kWh input models or 216mm 8 5in for the 88kWh and 105 6kWh input models b Slide the flue terminal throug
36. ng Absolute min 300mm 4 Minimum N B Access of 500mm must be provided one side for 6 months fan lubrication ANDREWS MODEL NO Height of Heater pr Cum Gas Connection ec 4 A OS POS tss sn Electrical Connection Flue Diameter _ Flue Adaptor 1168mm Minimum Service clearance with standard Anodes UNVENTED SYSTEM Tee amp T P Valve supplied Can be used for Hot Water outlet or can be capped Alternative Hot Water outlet i CSC39 1623 64 Wem 28 2 14 2 51 8 70 33 276 51 276 49 100 150 umm 4 VENTED SYSTEM Vent from here if used for Top Hot Water outlet If side connection is used for Hot Water outlet Air vent must uum ue een Do da SE ae 615mm Minimum Service clearance with Correx Anodes CSC39 and CSC59 Alternative Flue Systems be fitted at X DIMENSIONS AND CLEARANCES i CSC59 CSC78 1851 73 720 28 355 14 530 21 1535 60 2217 87 2020 80 970 38 7000 276 1610 63 7000 276 58 1623 64 720 28 355 i44 530 2 1535 60 1980 78 1780 70 970 38 7000 276 1610 63 7000 276 1250 49 1623 64 720 28 355 414 530 21 1307 51 2060 8 1780 70 840 33 7000 276 1310 51 7000
37. ng the elbow or condensate trap vertical flue IMPORTANT In order for the condensate trap to collect and dispose of the condensate from the flue pipe the flue system must have a downward slope of 21mm per metre 0 25in ft towards the condensate trap The condensate trap must be installed as close as possible to the flue adaptor to prevent condensate from accumulating and draining into the flue adaptor or blower h Carefully measure the length of straight flue pipe needed allowing for about 50mm 2in insertion into the elbow Mark the ungasketed end of the pipe to be cut and carefully make a straight cut on the outside pipe to the desired length Make sure the inside tube is not cut Then cut the inside flue pipe about 50mm 2in more than the outside pipe so that the flue pipe protrudes slightly beyond the outside pipe Connect the flue pipe and clamp at each end Use the large clamp supplied in the flue kit with the stepped gasket to seal the elbow or condensate trap to the blower flue connector The larger step of the gasket seals the flue pipe to the cast flue adaptor j Condensate disposal Connect either a 32mm 1 25in slip joint drain connection or a 25mm 1in PVC compression coupling from the condensate trap nipple to 25mm 1in PVC piping to a drain or condensate disposal pump Install a drain trap after the condensate fitting to seal the flue system Note On all flue installations for distances over 1 5 metres we
38. orrectly Ensure that the burner access panel is kept tightly sealed The combustion air supply pipe at the rear of the heater must be tightly clamped to the vent adopter and combustion air box boot Replace any damaged parts The entire venting system and combustion air supply must be inspected at least annually for integrity of all joints and gaskets BLOWER MOTOR BEARINGS Every six months lubricate the blower motor bearings Apply four drops of SAE 20 motor oil to the ports of the front and rear motor bearings SECTION 6 Annually remove the main burner rack assembly to clean orifices and related parts of ay BURNER dirt or other foreign matter Inspect the burner ports for obstructions or debris and clean with a wire brush vacuum or use a mild detergent to clean as necessary Inspect the ASSEMBLY pilot Carefully clean the electrode and flame sense rod with emery cloth The spark electrode rod closest to the pilot hood gap should be 1 8 in NOTE It is vital for proper and safe operation that the main burner rack is replaced in it s original position To remove the burner rack assembly follow the procedures outlined below a Shut off the gas and electrical supply to the heater b Remove the pilot tube fittings at the gas valve and combustion box C Disconnect wires to gas valve Open control box and disconnect pilot spark and flame sense wires Remove the wire raceway cover below the control box d Disconnect the gas p
39. ot flame may be viewed through the viewing window on the front of the combustion air box 3 Adjustment to the air shutter setting is not normally required for the heater 4 The burner flames should be blue with yellow tips 5 A blue orange flame is characteristic of LPG operation If the burners resonate produce an harmonic noise and vibration usually with LPG gas close down the burner air shutters until the resonance stops The resonance during burner operation should only be checked with the front panel held in place since resonance may be more pronounced with the front panel off Ensure flame appearance is satisfactory after adjusting the burner air shutters as described above IMPORTANT IN THE EVENT OF AN EMERGENCY TURN OFF GAS AND ELECTRIC SUPPLY SECTION 4 USER S SAFETY GUIDE For your safety read before lighting the appliance WARNING 1 Always follow manufacturer s 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 around the appliance area for gas Be sure to check at low level because some gas i e LPG is heavier than air and will settle on the floor 3 Do not make any attempt to re light the appliance if the main burner has extinguished Wait at least 5 minutes to allow for any unburnt gas to disperse Ventilate the area if possible FOR YOUR SAFETY IF YOU SMELL GAS 1 Turn off gas supply and open wi
40. s emergency K control at entry point to building Steel Liner sealed to pipe at inside end Cylinder regulator Set to give 37 mbar 14 86 Propane 3 4 Spring loaded gas cock Propane cylinder must be outside building V E Fig 2 SECTION 3 ELECTRICAL SUPPLY External wiring to the water heater s must be installed in accordance with current Regulations for the wiring of buildings and to any Local Regulations that may apply The Auto Ignition Heater is designed to operate from a 220 240V 1Phase supply The fuse rating is 5 amps The method of connection to the mains electricity supply should facilitate complete Electrical isolation of the appliance preferably by use of a fused double pole switch or fused spur box serving only the heater The disconnection of the supply shall have a contact separation of 3mm in all poles The point of connection to the mains electricity supply should be readily accessible and adjacent to the appliance LA WAS ET edu ABS AR TATCHI ECCE OLE EDS ELE FIEF FEES DEL arn TERLIDA gt um 2 Flame faders M ri F2 i di dy 5 tuii E r 3 F Era Bs r Tas 2 7 Main Printed Board da nes d TE Vou nue an V gt 2 ud ma jm m
41. ty and Treatment 19 Water Connections 20 SECTION 4 COMMISSIONING Filling the Heater with Water 24 Draining Water from the Heater 24 Lighting the Burner 24 Shutting Off the Burner 25 Checking Main Burner Pressure 25 Checking Pilot and Burner Flames 25 User s Safety Guide 26 SECTION 5 OPERATION Operating Sequence 27 ECO Energy Cut Off 27 Temperature Stratification Stacking 27 SECTION 6 SERVICING Introduction 28 Pre Service Operations 28 Annually 28 Six Monthly 28 Burner Assembly 29 Gas Control Valve 29 Magnesium Anodes 29 Combined Temperature and Pressure Relief Valve 30 Cleaning the Storage Vessel 30 Restart 30 SECTION 7 FAULT FINDING 31 SECTION 8 PARTS LISTS AND ILLUSTRATIONS 32 SECTION 1 GENERAL AND SAFETY INFORMATION GENERAL INFORMATION The Andrews Water Heater has been designed for use with NATURAL GAS OR LPG PROPANE OR BUTANE GAS only and is manufactured to give an efficient reliable and long service life To ensure the continued trouble free operation of your heater at maximum efficiency it is essential that correct installation commissioning operation and service procedures are carried out strictly in accordance with the instructions given in this manual By law installation and commissioning of the heater must be carried out by properly qualified personnel The heater s must be installed in accordance with the following requirements The current GAS SAFETY INSTALLATION AND USE REGULATIONS The
42. ust meet the requirements of BS6644 A suitable terminal guard must be fitted if less than 2 mtrs above ground level The Andrews Direct Fan Flued Gas Water Heater is supplied with one direct flue kit HORIZONTAL The flue system supplied with this water heater is a coaxial design with the flue discharge tube on the inside and combustion air supply on the outside Optional direct flue AND VERTICAL components are available that can extend the horizontal length and or vertical height of DIRECT FLUE the direct flue to the maximum distances listed in the table below This water heater must be installed using the supplied or optional listed components without modification LENGTHS Refer to the table on Page 36 for the various vertical and horizontal direct flue system components NOTE The supplied horizontal flue terminal may be used through outside walls up to 600mm 24in thick Maximum Flue Distances Horizontal or Vertical Number of 90 Elbows Maximum length of straight pipe excluding vent terminal to exterior wall 0 7m 22ft 9in 1 6m 19ft 6in 2 5m 16ft 3in 3 4m 13ft Oin NOTE Each 45 elbow reduces the maximum flue distance by 500mm 19 5in IMPORTANT Do not exceed the flue distances or the number of elbows listed above This may cause heater malfunction or an unsafe condition SECTION 3 HORIZONTAL AND VERTICAL DIRECT FLUE LENGTHS Installation Procedure Determine location of flue exit 1 The supplied
43. z sk lis d 5 da E BEDT Bal H rer oe By Fin Gere axi ay TTA AS Ms mna T TT Fat preg Fay TEXT Poclicr m sos eee Esa Wg impasta 31 FR AIT AR AGR TER waya fa kasi inde Borm hun sr si Pukuy rm DP Tay ren bu d Difp msn Hee Pe onte fi aA E noce oni Meran FANG PE D A m Wiring diagram for natural gas appliance and LPG appliance Connect the electrical supply the main control panel terminal block via the cable glands in the base of the control panel Mains input cable should be 0 75mm 3 core and should be connected to the mains supply as detailed above It is recommended that screen cable is used where the volt free contacts are to be connected from an external supply This will eliminate the risk of possible interference from nearby high voltage cables Mains Voltage 220 240Volts IP 20 Frequency 50Hz Fuse 5 Amps Fan Motor 1 4 Amps SECTION 3 Your Andrews Water Heater is a Direct Fan Flued Gas Water Heater where all air for FLUE combustion is obtained from the outside atmosphere and all flue gases are charged to the outside atmosphere The flue system is a single coaxial pipe within pipe design where SYSTEMS the flue products are discharged through the inside flue tube and the combustion air supply surrounds the f
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