A.O. Smith BFM 30 Installation Instructions Manual Download Page 1

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BFM 30
BFM 50
BFM 80

MODELS

INSTALLATION INSTRUCTIONS AND

USERS MANUAL

UNITED KINGDOM

CLOSED COMBUSTION WATER HEATER

Summary of Contents for BFM 30

Page 1: ...BFM 30 BFM 50 BFM 80 MODELS INSTALLATION INSTRUCTIONS AND USERS MANUAL UNITED KINGDOM CLOSED COMBUSTION WATER HEATER...

Page 2: ...sical harm Installation and commissioning should be carried out by a registered installer The type of gas and standard values which the water heater from factory is set on are stated on the type plate...

Page 3: ...urning the water heater off 19 2 4 Usage temperature control 19 2 5 Checking the gas pressures 20 2 6 Conversion to another gas 21 2 7 Maintenance 22 2 8 Anode 22 2 9 Descale procedure 22 2 10 Condens...

Page 4: ...H 10 ANODE 3 TEMPERATUREREGULATOR 11 FLUE TUBES ON OFFSWITCH 12 FLUE BAFFLE RESET KNOB 13 DIAPHRAGM 4 BURNER CONTROLLER 14 INSULATION 5 GASVALVE 15 BURNER 6 MANIFOLD INJECTORS 16 AIRDIFFUSIONPLATE 7 P...

Page 5: ...L3P the appliance is therefore suitable for natural gas as well as propane and butane gases The storage appliance is suitable for working pressures to 8 bar A connection is provided for the optional f...

Page 6: ...perature reaches the set point the water heater is turned off If the flame extinguishes whilst in operation both the safety pilot valve and the gas valve will close immediately If the control thermost...

Page 7: ...7 Figure 3 Differential pressure switch Figure 2 Positioning ventilation...

Page 8: ...0 A 1995 1995 2020 B 1795 1795 1820 C 600 600 600 D 520 520 525 E 600 600 590 F 1640 1640 1655 G 1360 1360 1360 H 630 630 625 K 710 710 710 L 1000 1000 1000 M 755 755 755 N 80 125 100 150 130 200 1 Co...

Page 9: ...9 Figure 4 IMD 0057 R0...

Page 10: ...8 5 3 Diameter main injector m m 1 45 1 40 1 50 Diameter injector ignition burner m m 0 25 0 25 0 25 GENERAL Storage capacity litre 309 298 253 Number of bar burners 3 5 7 Number of anodes 2 2 4 Numbe...

Page 11: ...essential the rules of good practice are applied at all stages of installation Vented systems If the water heater is to be connected to a cold feed tank or cistern the hot water supply pipe must inclu...

Page 12: ...water supply system a kit of valves and fittings listed by the water research centre and complying with part G3 of the current building regulations and BS 7206 should be used Installation should be c...

Page 13: ...ecommend that a circulation system is installed in the event of such demand patterns see figure 8 Kits are available from A O Smith or our distributors Figure 8 Connection diagram including destratifi...

Page 14: ...e diameter BFM 30 80 125 mm BFM 50 100 150 mm BFM 80 130 200 mm Angle 90 2 max 2 1 3 Condensation drain In order to guarantee the correct operation of the water heater the condensate drain of the wate...

Page 15: ...A 0 7000 0 7000 0 7000 B 0 7000 0 7000 0 7000 A B 7000 7000 7000 Roof discharge see figures 10 and 11 Type M2000 DDV SE HR VR Manufacturer Meulink Grol Pipe material flue tube Thick walled aluminium w...

Page 16: ...gram of the BFM heater and the connections in the control column are shown in figures 12 and 13 Electrical connection diagram BFM see figure 12 A Jacket B Transformer 230V 238V 2VA C Air proving switc...

Page 17: ...17 Figure 12 Electrical connection diagram BFM IMD 0055 R1...

Page 18: ...0 E Air proving switch F EMC single phase filter G RESET knob H Thermostat frost K Thermostat regulation L Switch ON OFF M Thermostat overheat N Thermostat high limit P Automatic burner controller R R...

Page 19: ...evel see table page 10 2 2 3 Setting up the pilot flame The pilot flame has been adjusted in the factory and does not have to be checked 2 3 Turning the water heater off For short periods 1 Turn the t...

Page 20: ...essure control If you wish to adjust the burner pressure the following procedures must be followed 1 Switch off main power by turning the I O switch to 0 position 2 Connect the U tube manometer to pre...

Page 21: ...ionisation pen on the burner controller c loosen the gas control cable d dismount the gas supply to the gas valve 3 Remove the burner tray from underneath the heater 4 Replace the main injectors and...

Page 22: ...e the concentric flue tube 2 Disassemble the electrical connection of the ventilation fan on the top box 3 Loosen the fastening bolts of the top box 4 Remove the top box the positioning of the anodes...

Page 23: ...des of the combustion chamber and the flue tubes The water drops will fall on to the burner bed which can cause a hissing sound This is normal and will disappear as soon as the water heater has reache...

Page 24: ...ator call for heat The burner automation will operate firstly the ventilation fan for its purge cycle then a spark will ignite the pilot burner The softlite control then ignites the main burner The te...

Page 25: ...SET switch up to three times Is the water heater in operation Consultyourinstaller 4 FAULT FINDING 4 1 Fault finding USER Problem solved no yes yes yes Is the water heater in operation no no Problem s...

Page 26: ...ation Problem solved yes Is the water heater in operation Problem solved yes Is the water heater in operation yes no no no no no yes See detailed fault finding no Does the ON OFFswitch light up Does t...

Page 27: ...yes replace FILTER Ensure connections correct if yes replace ON OFF switch Check voltage present afterFILTER Check voltage present at gate3ON OFF switch Check voltage present at gate 11 and 12 CONTRO...

Page 28: ...Check voltage present at GATE1AIRPROVING SWITCH Check voltage present at GATE7 BURNER AUTOMATION Ensure connections correct if yes replace BURNERAUTOMATION Replace BURNERAUTOMATION Ensure connections...

Page 29: ...OMATION Ensure connections correct if yes replace ECO Ensure connections correct Measure pressure at hose H at the column Ensure connections correct if yes check hose H for leakkage or blockings Ensur...

Page 30: ...s the pilot burner Carry out one more RESET cycle If no operation is valid replace the entire PILOT BURNER assy RESET water heater after replacing the PILOT BURNER Water heater in operation Problem so...

Page 31: ...with A O Smith Water Products Companies installation instructions f when anode s have been inspected and renewed if they are worn or erroded by 50 of more at any point of their length 5 4 Exclusions T...

Page 32: ...32 0305 664 R0...

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