Lochinvar Knight LG30GCE, Installation, Commissioning, User & Maintenance Instructions

Page 1: ...ng the equipment IMPORTANT INFORMATION 0310566 March 2012 Installation Commissioning User Maintenance Instructions High Efficiency Water Heaters and Boilers Knight Traditionally Gas Fired Single Flue Water Heater with Pilot Ignition Models LG 30 G CE LG 40 G CE LG 50 and PG CE and PG CE G CE and PG CE ...

Page 2: ...dily harm Installation and commissioning should be carried out by a qualified competent installer The type of gas and the value at which the appliance is set standard in the factory are registered on the rating plate The appliance may only be installed in a room if this room meets the ventilation requirements Lochinvar Ltd accepts no responsibility for warranty service and or product liabi lity in...

Page 3: ...ilot adjustment 15 2 4 Putting out of operation 15 2 5 Temperature regulation 16 2 6 Setting the nominal heat input 17 2 7 Conversion procedure 18 2 8 Maintenance 19 2 8 1 Sacrificial anode 19 2 8 2 Cleaning 19 2 8 3 Decalcification 20 2 8 4 Spare parts 20 2 9 Inlet combination 20 2 10 Fault finding 20 2 10 1 Safety thermostat 20 2 10 2 Flue down draught safety device 21 2 10 3 Hot water temperatu...

Page 4: ... When the appliance is filled with water it continuously is under water pres sure As hot water is drained from the tank cold water is added immediately A flue baffle has been placed in the flue tube to improve heat transfer The flue gasses pass their heat on to the water by means of radiation and convection The flue gasses are guided to the chimney via the draught diverter The exhaust of the flue ...

Page 5: ...e tube 5 Glass lined tank 6 Gas control valve 7 Cold water inlet 8 T P valve connection 9 Outer casing Figure 1 Cross section of the heater 10 Flue baffle 11 Sacrificial anode 12 Drain tap 13 Atmospheric burner 14 Pilot light burner with thermocouple AOS 0478 ...

Page 6: ...h a combustion products discharge safety device It is the function of the safety device to prevent flue gasses from the water heater entering the room where the water heater has been placed instead of passing through the flue to outside atmosphere The gas supply is disconnected as soon as the device is activated by hot gasses flowing over the sensor After the cause of the re entry of flue gasses h...

Page 7: ...l valve 1 Combustion products discharge safety device thermostat 2 Sensor Combustion products discharge safety device thermostat 3 Thermocouple with built in interrupter 4 Thermocouple 5 Gas control block 6 Reset button 7 Pilot burner 8 Temperature regulator knob AOS 0479 ...

Page 8: ... Dimen sions LG 30 LG 40 LG 50 see draw 3 A 1280 1370 1670 B 1120 1210 1540 D 465 515 515 E 545 595 605 G 80 80 100 K 325 325 380 M 11 0 12 0 1590 N 11 0 12 0 1590 R 2 0 2 0 255 S 965 1045 1380 1 Cold water inlet 2 Hot water outlet 3 Gas control valve 4 Drain tap 5 T P valve tapping All dimensions are given in mm rounded off on 5 mm See figure 3 ...

Page 9: ...9 Figure 3 Dimensions IMD 0266 N K 3 A S 4 R B M 5 G E 2 D 1 ...

Page 10: ...ter main orifice mm 1 40 1 50 1 95 Diameter pilot orifice mm 0 22 0 22 0 22 DATA PROPANE G31 37 mbar Nominal load gross kW 9 8 11 8 17 2 Supply pressure mbar 37 37 37 Burner pressure mbar 37 37 37 Gas consumption kg h 0 7 0 8 1 2 Diameter main orifice mm 1 40 1 50 1 95 Diameter pilot orifice mm 0 22 0 22 0 22 GENERAL Storage capacity litres 109 144 181 Water connections 3 4 14 NPT 3 4 14 NPT 3 4 1...

Page 11: ...water authority and fire regulations and the following Bri tish standards 5440 5546 6644 6700 6798 and 6891 Some chemicals produce vapours which can cause rapid failure of thermocou ples burners and storage tanks if they are drawn into the combustion air supply Therefore if this water heater will be used to supply hot water to hairdressers dry cleaners industrial degreasing processesor any other a...

Page 12: ...enerally as shown on the following diagram See figure 4 Lochinvar Ltd are tested to a maximum pressure of 12 bar and a maximum working pressure of 8 bar 2 1 3 Gas connection The gas supply to this appliance must be installed in accordance with BS 6891 1988 Fit the gas supply cock supplied with this unit immediately before the gas control block No heat or soldered joints should be applied in the vi...

Page 13: ...nalling returning flue gases The probe of the down draught supervision must remain installed on the draught hood Connect the slide connectors of the down draught supervision to the thermocouple see Figure 5 and install the head of the down draught supervision in the bracket see Figure 5 The draught hood must be positioned in its normal place with the temperature probe at the front of the boiler Pa...

Page 14: ... press the piezo ignitor several times until the pilot burns see figure 6 5 Keep the control button pushed in for approximately 20 seconds After releasing the button the pilot should remain burning If the pilot extingui shes you should wait 5 minutes be fore repeating the ignition procedure The size of the pilot flame can be adjusted see also Pilot adjustment 6 Subsequently remount the outer and i...

Page 15: ... venturi 3 Turn both clamps outward 3 pushing them over the edge of the burner chamber 2 3 Pilot adjustment The pilot can be adjusted by means of the regulating screw under the plastic cover on the right hand side of the gas control block Turn the screw clockwise to reduce the gas pressure and anti clockwise to incre ase the pressure Care should be taken to ensure the pilot covers the thermocou pl...

Page 16: ...er used The gas control block automatically regulates the gas supply The main burner will ignite as soon as a reduction in water temperature is sensed by the thermostat The main burner will shut down as soon as the preset temperature is achieved Position 1 approximately 30 C Position 2 approximately 40 C Position 3 approximately 50 C Position 4 approximately 60 C Position 5 approximately 70 C At h...

Page 17: ...ation and ignite the burner 3 Check the burner pressure and if necessary reset by means of the adjusting screw pr adj pressure adjustment see Figure 9 To make this possible the temperature control knob should be removed by pulling it straight forward making the pr adj visible Turning clockwise reduces the pressure turning anti clockwise incre ases the pressure It is recommended to check the heat i...

Page 18: ...Put the pressure regulation of the gas control block out of operation To do this the temperature regulating knob should be pulled straight forward Turn the no pr no pressure regulation screw down tight see figure10 Seal this setting with lacquer Remounttheburnerinreverse order Open the main gas tap 4b Conversion from LP gas to natural gas Put the pressure regulator into operation To do this the te...

Page 19: ...sary to replace the anode it should always be replaced by one of the same type Figure 10 Conversion to another gas The type of anode required can be determined on the basis of the type of the appliance and the serial number 2 8 2 Cleaning 1 Close the gas supply and demount the burner after it has cooled down 2 Disconnect the burner pilot pipe and thermo couple from the gas control block see drawin...

Page 20: ...s important to note the type of appliance as well as the serial number of the appliance Based on this information the data concerning the spare parts can be determined 2 9 Inlet combination Not applicable in U K and Ireland 2 10 Fault finding In case of failure the following should be checked 2 10 1 Safety thermostat All appliances have been fitted with a safety thermostat that shuts off the gas s...

Page 21: ...lly closed 2 Check whether all water connections are water tight 3 Check whether the possible water leakage could be caused by conden sation 2 11 Gas smell Warning Immediately shut the main gas tap Do not light any fire or switch on any lights do not use any electrical switches or alarm bells Open windows Thoroughly inspect all gas connections and if the gas smell persists alert the local gas comp...

Page 22: ...imately 50 C Position 4 approximately 60 C Position 5 approximately 70 C Higher water temperatures will cause more scale build up in the appliance It is for this reason that it is recommended to place the temperature control knob in position 4 as the accumulation of scale will be reduced at lower temperatures In addition a safety thermostat has been fitted This thermostat completely shuts off the ...

Page 23: ...tact your installer or the local gas company Clean the pilot burner Find the cause and remove it Set the temperature regulator at a lower temperature Replace the thermocouple Restore the connection Open the gas tap Connect by sliding the two connectors of the down draught supervision on to the thermocouple Set the temperature regulator at a higher temperature Turn the temperature regulator complet...

Page 24: ...r installer See Condensation Tighten the threaded connections Trace the cause Reduce your hot water use Allow the appliance enough time to warm up water Safety thermostat has closed the gas supply because the water temperature was too high Hot water storage empty Cause cannot be deter mined Condensation of flue gasses Insufficient sealing of the water connections thread Leakage from other water ap...

Page 25: ...al site of installation c The water heater is used exclusively with drinking water which at all times can freely circulate a separately installed heat exchanger is mandatory for heating saline water or corrosive water d The tank is safeguarded against harm ful scaling and lime build up by means of periodic maintenance e The water temperatures in the heater do not exceed the maximum setting of the ...

Page 26: ... and any other costs associated with the replacement will not be accepted by Lochinvar Ltd 4 6 Claims A claim on grounds of the specified warranty must be submitted to the dealer from whom the water heater was purchased or to another authorized dealer of Lochinvar Ltd Inspection of the water heater as referred to in articles 1 and 2 shall take place in one of the laboratories of Lochinvar Ltd 4 7 ...

Page 27: ...following products Product description Product models on the assumption that the installation instructions have been followed are compliant to as stated in the EC type examination report by KIWA Gastec Certification BV the Netherlands Company date signature D J Pepper Managing Director lochinvar limited 7 lombard Way The mXl Centre Banbury united kingdom Lochinvar Limited 5 DECLARATION OF CONFROMI...

Page 28: ...www lochinvar ltd uk Lochinvar Ltd 7 Lombard Way The MXL Centre Banbury Oxon Ox16 4TJ Tel 44 0 1295 269981 Fax 44 0 1295 271640 Email info lochinvar ltd uk High Efficiency Water Heaters and Boilers ...