OPERATING INSTRUCTIONS - Searched Google for Boilermanual
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1. a Hot water is delivered at mains pressure regardless of flow rate which means that wonderful pressure can be deliv ered for showers Typical mains pressure can be 30 50 p s i compared with say 5 10 p s i from a storage tank in the roof each 2 3 feet of head produces merely 1 p s i b The hot water is potable that is it is fresh from the mains like the cold supply and has not passed through stor age tanks in the roof or a copper cylinder C It is more economical and more efficient to produce hot water by this means rather than the old copper cylinder method d Hot water can be produced indefinitely provided that the flow rate is equated to the boiler output So what are the disadvantages In Our opinion there are no disadvantages once you under stand how a combi works and know what to expect of it Most criticisms of combi boilers relate to the hot water pro duction In a copper cylinder method the cylinder is gradually heat OPERATING INSTRUCTIONS ed by the boiler over a period of 30 minutes to one hour The hot boiler water primary water is circulated through a coll inside the copper cylinder and gradually heats the stored water This coil is a relatively poor heat exchanger because a It has limited surface area b There is no laminer flow or scrub over its surface itself a big factor in heat transfer c The temperature differential between the primary water and the store2. Section 1 Operating Instructions 1 1 Introduction The Control Thermostat High Limit Thermostat Lock Out Button Sealed Systems Applies to Combi and System Appliances 1 6 Water Systems Combi and System Appliances 1 7 Filling the System 1 8 Oil 1 9 Fault Finding 1 10 Servicing J J J O AOUN 1 1 1 1 11 Guarantee 12 How Grandee Combi Works 13 The Control Thermostat Combi Appliances only 14 System Boilers 15 Hot Water Control Knob 16 Radiator Valves 17 Cold Water Supply 18 Taps and Showers 19 Thermostatic Radiator Valves 1 20 Bypass or Differential Pressure Valves 1 1 Introduction Your Grandee oil boiler is designed and manufactured to the high est engineering standards known to us and should give long and satisfactory service if installed commissioned and serviced correct ly i ee l d All Grandee appliances are fully automatic and capable of pro ducing heat for hydronic central heating systems both sealed or open vented and for domestic hot water Your heating engineer should be capable of calculating and fitting the necessary equipment for your central heating system and the incorporation within the system of your Grandee appliance In essence your Grandee boiler will resoond to its instructions that is it will switch on and off when the control devices normally a pro grammer or time clock direct it to Heating World do not supply programmers or time
3. C The mixing valve however ensures a maximum hot water temperature of 70 C and therefore the maximum temperature is substantially under the maximum permitted under BS Standards The system pressure when on maximum temperature of 80 C see section 1 13 The Control Thermostat should not be more than about 2 5 bar If the pressure is set near or on 3 bar then the pressure relief valve will activate indicating that the system is over poressurised An expansion vessel of 10 litre capacity is also incorporated If the central heating system excluding the boiler exceeds 85 lites volume then a further expansion vessel will be necessary to cope with the additional volume expansion Grandee Wall Combi and System boilers are factory fitted with a DRAIN OFF COCK which is located beneath the heat exchang er Grandee Floor Combi and System boilers have the drain off cock located bottom front right hand of the heat exchanger 1 7 Filling the System Grandee Combi and system appliances are designed for sealed systems and must be installed by a competent preferably OFTEC approved engineer The system can be filled by A make up by pre pressurisation of the system using a tem porary hose connection in conjunction with a stop valve and non return double check valve DO NOT connect directly to the mains supply Consult your Local Water Authority if in doubt Central Heating Expansion Vessel This vessel is designed for a maximum system
4. This is a signal to you that something is malfunctioning You may press this reset button and the boiler may fire satisfactorily If you decide a further attempt allow at least 2 minutes to permit the control box to go through its proper sequence If after 2 or 3 attempts your boiler fails to fire then consult your service engineer The lock out button is located as indicated on the illustrations in Fig l Grandee Wall Mounted Grandee Floor Standing po Fig 1 A Beneath the boiler on the right hand side On front panel OPERATING INSTRUCTIONS 1 5 Sealed Systems applies to Combi amp System appliances A minimum pressure is required for your Grandee Combi System to operate properly which can be viewed on the pressure gauge located in the front panel of the appli ance Recommended pressures are 1 25 bar cold Up to 2 5 bar when hot The actual pressure will depend on the temperature and the amount of water in the heating system If the pressure drops below this minimum level the system should be re pressurised If your system repeatedly loses pressure then there is proba bly a leak in the system which needs rectifying Sometimes loss of pressure from a sealed system can be caused by poor quality and ineffective radiator valves 1 6 Water System Combi amp System appliances The heating system must comply with BS5499 and BS6798 Standards Maximum domestic hot water temperature must not exceed 86
5. capacity of 130 litres 28 5 gallons The contents of the Grandee Combi and System Boilers must be deducted from the totals as follows Grandee SW 15 20 less 50 litres 11 gallons Grandee SW 20 24 less 45 litres 10 gallons Grandee SW 24 27 less 45 litres 10 gallons Grandee SFS 15 23 less 60 litres 13 gallons Grandee SFS 20 25 less 60 litres 13 gallons Grandee SFS 25 29 less 45 litres 10 gallons If the volume of water in the central heating system exceeds 50 litres 11 gallons then an auxiliary expansion vessel will be needed in compliance with BS4841 This should be fitted as near to the central heating return con nection on the heat exchanger and charged at an equal pressure to the factory filled expansion vessel For further information consult BS7074 part 1 Where the central heating supply is fully heated and the pressure does not exceed 2 5 bar then the factory fitted expansion vessel is sufficient Expansion Vessel Pressure Grandee Combi and System appliances are designed for sealed central heating systems with contents up to 50 litres When filled COLD the recommended system pressure should be approximately 1 25 BAR which equates to the maximum static head of the system All plumbing fittings are designed to operate up to 3 bar which is the maximum pressure of the sys tem Any extra fittings supplied by the installer should similarly be capable of operating up to 3 bar pressure The system pressure can be ch
6. quite normal and you are likely to experi ence this phenomenon as when several cold taps are turned on at the same time If the mains water pressure supply is low or long 15mm pipe runs are involved from mains to boiler then larger diameter pipework may have to be fitted In hard water areas that is wnere the temporary hardness exceeds 100 p p m scale can build up in the plate heat exchanger and may eventually block if completely In these circumstances an in line scale inhibitor must be fitted Replacement of the plate heat exchanger is a simple matter however Consult your local water company to determine the hardness of water in your area Your Grandee oil appliance is designed to burn Kerosene 28 Class 2 BS2869 Try to keep your oil storage tank replenished as sludge and debris could damage your burner Also if you run out of oil it can be expensive to call out an engineer to bleed air from the oil line and reset the burner 1 9 Fault Finding Notes are provided in Section 11 of this manual but please take note of the following points Q Check the electric supply and that no fuses are blown If a fuse fails more than once this means that there is a problem and you should consult your service engineer or an cian Do not tamper with electric under circumstances electri any bD Do not press the reset lock out button more than three times and ensure you delay at least three minutes before each attempt or
7. water will flow indefinitely In order to reduce the possibility of excessive water flow each Grandee Combi incorporates a built in flow regulator carefully sized according to the output of the appliance in order to stabilise the delivery of hot water This flow regulator also enhances the performance of its various control ther mostats and mixing valves within the appliance which per form better when less subjected to extreme and sudden changes of volume and temperature Summary Grandee Combi produces hot water much more efficiently than the old fashioned copper cylinder method with a num ber of other advantages It is as well to think of them as larg er versions of electric or gas instantaneous water heaters and that if the hot water flow is excessive then the temperature of the hot water will fall 1 13 The Control Thermostat Combi appliances only This is the control knob which can regulate within the band 50 75 C the temperature of the boiler water Known as pri mary water which is the water which runs through your radi ators and heating system You are therefore able to adjust the temperature at which the primary water leaves the boiler Some homeowners pre fer very hot water whereas others particularly where chil dren old or infirm are involved prefer lower temperatures through their radiators Turn anti clockwise to reduce primary water temperature clockwise to increase The temperature of the prima
8. clocks and your heating engineer will explain the operation of the type supplied to you As far as your Grandee boiler is concerned there is very little for you to concern yourself with but it will be helpful to understand the fol lowing 1 2 The Control Thermostat This is the control knob which can regulate within the band 50 80 C the temperature of the boiler water known as primary water which is the water which runs through your radiators and heating system You are therefore able to adjust the temperature at which the pri mary water leaves the boiler The graduations on the thermostat knob rise fall in increments of approximately 5 C Normally we would expect the knob to be set around graduations 3 or 4 which correspond to approximately 75 C OPERATING INSTRUCTIONS some householders hold the belief that by turning down the boiler temperature that they save fuel Generally soeaking however the boiler remains on longer as the heat transfer to the dwelling through the radiators is diminished and the boiler merely cycles longer On the other hand if the temperature is set too low it is possible to cre ate condensation within the boiler which could be deleterious Therefore you are advised to leave the setting between 3 and 4 In the case of combi appliances the temperature of the primary water also influences the temperature and quantity of domestic hot water The higher the temperature of the primary water the gr
9. d water progressively decreases thereby ever reducing heat transfer So no matter how big the boiler out out it takes up to an hour to heat a reasonable amount of hot water d And then the water stratifies so the entire contents of the cylinder are not the same temperature When a large amount of hot water is drawn however for example a bath load this stored water can be drawn off quickly but once drawn off a delay of up to one hour occurs before another supply can be drawn off Some householders are accustomed however to the relatively generous supply of hot water once the copper cylinder is heated In contrast a combi heats water relatively instantaneously and the actual amount of hot water available will be related to the output of the boiler The bigger the output the more hot water With Grandee Combi a carefully calculated thermal store of orimary water is built into the appliance so as to supplement the burner output This thermal store takes between 5 and 20 minutes to charge dependent on the boiler output and its thermal value can vary according to its temperature The hotter the thermal store the larger the battery However if the amount of water being drawn off should overtake the boilers ability to produce heat the temperature of the hot water will fall A simple remedy is to turn the tap down reduce the flow rate in such a way as to restrict the flow But then unlike the copper cylinder method the hot
10. eater the value of the built in heatstore or thermal value Also the hotter the primary water the better is the transfer of heat to the domestic water through the plate heat exchanger For optimum amount of hot water set the control thermostat to the highest figure Finally the hotter the domestic hot water leaving the boiler prior to the mixing valve the greater the volume of domestic hot water reaching the tap This is because in these circumstances more cold water is mixed with the hot water necessary to modulate the temperature of the water flowing through the tap or shower summiary Turn the control stat to maximum for hottest radiators and hotter more domestic hot water The cooler the primary water the cooler the radiators and cooler less domestic hot water Our recommendation is set at maximum 1 3 High Limit Thermostat In the event that the operating thermostat should fail a high limit thermostat is fitted as a safety precaution This is designed to pro tect the boiler from overheating Should the high limit thermostat be required to operate then the red light on the control panel will illumi nate To reset the high limit thermostat press the red button It would be advisable to consult your service engineer if your red light illumi nates 1 4 Lock Out Button In the event that the burner should fail for a variety of reasons the lock out button will illuminate E g if you run out of oil or if a Control fails
11. ecked by heating the ceniral heating system to maximum temperature and checking the pressure on the pressure gauge provided If the pressure is less than 2 25 bar then the system will be satisfactory If the pressure exceeds 2 5 bar then a supplementary expansion vessel should be installed to cater for the additional expansion This should be fitted as reasonably close as possible to the central heating return connection on the boiler ensuring compliance with BS4841 and BS7074 part 1 Poor quality radiator valves are offen responsible for loss or leak age from the central heating system and high quality valves which comply with BS2767 10 1972 are recommended Heating World can supply suitable radiator valves if required Ensure that systems are properly flushed and that all debris flux es and foreign matter is cleared from the system This is particu larly important on old central heating systems where corrosion debris scale and sludge has accumulated Reduced circula tion through restriction and blockages can cause premature corrosion of the heat exchanger as well as damaging compo nents Heating World manufacture a top quality central heating pro tection and cleaning system Water Supply amp Flow Rate Grandee Combis only Mains fed combi boilers share the available water with various devices such as taps dishwashers and cisterns etc The flow of water can be reduced if other such devices demand water simultaneously This is
12. f points Constant volume flow regulating or balancing valves may be required to avoid water starvation to individual taps 1 18 Taps and Showers Ensure thot all taps and shower heads are compatible for mains pressure operation Single lever taps are particularly suitable for Grandee Combi appliances Shower heads must not be immersed in bath water and should be held a minimum dis tance of 25cm above the bath Otherwise a double check valve must be fitted to present anti syononage to the domestic water supply 1 19 Thermostatic Radiator Valves Where a central heating system is equipped with thermosta tic radiator valves a suitable bypass or differential pressure valve MUST be fitted It is not sufficient to leave a small radi ator with open valves which risk being closed by the house holder at certain times i e summer months Failure to fit a suitable bypass can cause stratification of pri mary water in the heat exchanger and may trigger the high limit thermostat Also the circulating pump may be dam aged or burned out if it is prevented from performing nor mally Stratification of primary water can create vapour pressure impede the circulating pumps performance and cause cavitation 1 20 Bypass or Differential Pressure Valves Ensure that your heating system is fitted with a suitable bypass especially where thermostatic radiator valves are used or where zoning valves or other circuit controls are fit ted within t
13. he system
14. hin the boiler casing as well as a pressure gauge and pressure release valve 1 15 Hot Water Control Knob Grey Combi appliances only This knob adjusts thermostatically the temperature of the domestic hot water by rotating clockwise cooler or anti clockwise hotter Its temperature range is approximately 30 to 70 C regardless of the temperature of the primary water see The Control Thermostat Section 1 13 this valve enables OPERATING INSTRUCTIONS you to exercise control of the hot water temperature The lower the temperature setting the greater is the volume of hot water delivered but this thermostatic control valve is use ful where young children or infirm people are involved as excessively hot water can be avoided without reliance upon alternative control devices The coolest water is available on setting and the hottest on setting 5 see Section 1 13 Normally your installer will adjust this to your preferred setting e kom o0 0 0 A0 EN Leakage from a sealed system which requires constant replen ishment introduces fresh water and thereby corrosion into the heating system which is undesirable Use suitable valves con nections and high quality radiator valves which comply with BS 2767 10 to avoid such loss of water 1 17 Cold Water Supply Whenever possible use 22mm pipe from the cold water mains supply to the appliance and first hot water outlet to maximise the flow rates to the various draw of
15. oduced because the manufacturer has made numerous site visits or abortive calls resulting from faulty installations or such as run ning out of oil fire valves faulty etc etc SUMMARY The manufacturer will pay for parts and labour if equipment fails through faulty manufacture on equipment during the warranty period The manufacturer will not pay for either installation or operat ing faults 1 11 Guarantee Subject to correct installation commissioning and servicing your Grandee boiler has a twelve month warranty Nozzles and associated problems are excluded from the manufac turers warranty You may extend this warranty for up to five years for the payment of a modest insurance premium See details supplied separately We hope you are happy with your Grandee appliance which should give you many years of satisfactory service Important Ask your service engineer to complete the enclosed installation and commissioning form If this is not completed if is likely that your appliance has not been commissioned and will not operate correctly Helpline Telephone 0121 454 2244 for advice We want to help you and your installer A short telephone call can avoid prob lems Extra notes for Grandee Combi appliances 1 12 How Grandee Combi Works Grandee Combi incorporates a high tech boiler similar in principle to most oil fired boilers which comprises an ultra compact heat exchanger and pressure jet burner This b
16. oiler heats water known as primary water which circulates through radiators for central heating The appliance also embodies a high efficiency plate heot exchanger which transfers heat from the primary water to the domestic water directly from the mains thus providing hot water at mains pressure Within the appliance are compo nents such as circulating pump heating system expansion vessel water temperature control valve and such other con trols which you would expect to find in a well designed effi cient modern heating system Yet with Grandee Combi all this is extremely compact and beautifully though simply engineered No need for copper cylinders tanks of water in the loft and long heat wasteful pipe runs Poor showers are a thing of the past Grandee Combi is the finest range of oil combination boilers available featuring several ingenious and patented innova tions Combis and hot water Better but different Grandee Combi boilers produce hot water in a different manner from traditional systems with copper cylinders An understanding of the principle will enable you to obtain opti mum results for your appliance and realise your level of expectation So what is the main difference Grandee Combi heats cold water directly from the mains by transferring heat in the boiler primary water to the incoming cold mains domestic water by means of a highly efficient plate heat exchanger The advantages of the system are
17. ry hot water is not the final determinant of the domestic hot water temperature which can be adjusted by the grey hot water control knob See Section 4 8 Normally we would expect the knob to be set between graduations 3 and 4 which corresponds to approximately 65 0 C From a cold start Grandee Combi Compact takes up to 20 minutes to adequately heat its thermal store The bigger the thermal output the faster the appliance is ready to pro vide hot water In normal usage the appliance is seldom stone cold and therefore the appliance will normally pro duce hot water in 10 minutes or so If your system incorpo rates a time clock or programmer it would be prudent to time your Grandee Combi to switch on approximately 20 minutes before you are likely to require domestic hot water to ensure that it is fully charged 1 14 System Boilers Grandee System boilers are a type of intermediary appli ance between Combi and Standard models A System boiler is sealed by means of an expansion vessel contained within the casing of the appliance and which enables expansion and contraction of the primary water in the heat ing cavity thereby eliminating the feed and expansion tank usually located in the loft of the dwelling sealed systems should only require occasional replenish ment once the system is filled and should reduce any potential for internal corrosion of the heating system System boilers also contain the circulating pump wit
18. you risk damaging the control box C Check that you have not run out of oil d Check that the orange light is illuminated to denote that there is a power supply to your appli ance 95 of calls to site are not associated with the boiler itself Therefore ensure that the boiler is installed and commis sioned correctly before calls to manufacturer for assistance are made 1 10 Servicing You are advised to have your boiler regularly serviced by a qualified preferably OFTEC trained engineer With kerosene burning appliances service at least once yearly OPERATING INSTRUCTIONS You MUST have your boiler correctly installed and commis sioned otherwise your manufacturers warranty will be ren dered null and void Ensure that a copy of OFTEC form CB10 is left with you to prove that your appliance has been commissioned by an OFTEC engineer Whereas we shall do our best to advise and assist you in remedying any problems which may arise if you cannot produce commissioning data a charge will be made for the call out payable at the time of the visit The manufac turer reserves the right not to inspect an appliance that has not been commissioned Before a call is made to site by the manufacturer payment or a credit card transaction will be required If the appliance has failed under warranty through faulty manufacture or components then a credit or cheque in repayment will be issued without delay This procedure has been intr
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