Related Manuals for A.O. Smith BFM 30
Summary of Contents for A.O. Smith BFM 30
- Page 1 MODELS BFM 30 BFM 50 BFM 80 INSTALLATION INSTRUCTIONS AND USERS MANUAL UNITED KINGDOM CLOSED COMBUSTION WATER HEATER...
- Page 2 INTRODUCTION Read the installation instructions before installing the water heater. Read the user-instructions before lighting the water heater. If these instructions are not followed carefully, this may lead to explosion and/or fire and can cause material damages and/or physical harm. Installation and commissioning should be carried out by a registered installer.
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Page 3: Table Of Contents
Conditions for installation and use ... 31 Exclusions ... 31 Range of the guarantee ... 31 Claims ... 31 No other guarantee or warranty either expressed or implied is made on behalf of A.O. Smith Water Products Company ... 31 PAGE... - Page 4 Figure 1 1) TOP-BOX 2) AIR PROVING SWITCH 3) TEMPERATURE REGULATOR ON/OFF SWITCH RESET-KNOB 4) BURNER CONTROLLER 5) GAS VALVE 6) MANIFOLD / INJECTORS 7) PILOT BURNER 8) HORIZONTAL AIR INLET VENTILATION FAN 10) ANODE 11) FLUE TUBES 12) FLUE BAFFLE 13) DIAPHRAGM 14) INSULATION 15) BURNER...
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Page 5: General
1. GENERAL 1.1 Description of the appliance Construction and fitting out of the storage appliance comply with the European Standard for gas fired hot water storage appliances for sanitary use (EN89). The appliance thereby satisfies the requirements of the European Directive for Gas Appliances, and is therefore entitled to bear the CE mark. -
Page 6: Technical Safety Equipment
Air proving switches BFM-units Unit Pstart Poff (Pa) (Pa) BFM 30 BFM 50 BFM 80 The air proving switch must always be fitted with the connection points downwards! The air pressure differential switch must always be fitted with the connection points at the bottom, while the pipe with the letter H must be connected to the point P1. - Page 7 Figure 2 - Positioning ventilation Figure 3 - Differential pressure switch...
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Page 8: Technical Description
1.3 Technical description 1.3.1 Measurements See figure 4 Size All dimensions in mm, rounded up to the nearest 5 mm. BFM 30 BFM 50 1995 1995 1795 1795 1640 1640 1360 1360 1000 1000 80/125 100/150 Cold water inletRP1½ Hot water outletRP 1½... - Page 9 IM D -0 05 7-R 0 Figure 4...
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Page 10: Technical Data
* Gas usage at 1013,25 mbar and 15 °C. ** For a leak-tight connection European coupling pieces with pipe screw-thread according to ISO 228/1 or ISO 7/1 can be used on the NPT-connection nipples. Unit BFM 30 mbar mbar 12.5 m3/h 2.60... -
Page 11: For The Installer
100 cm heater(s) which it supplies.The minimum actual capacity is 50 gallons or 227 litres. See diagram 5. A.O. Smith water heaters are tested to a maximum pressure of 12 bar and a maximum working pressure of 8 bar. Dead legs on a hot water installation are undesireable. - Page 12 (see figure 6). Unvented To install an A.O. Smith water heater on an unvented cold 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.
- Page 13 Therefore, we recommend 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. 1) Pump (type: Grundfos UP 20-15 N150, or similar) 2) Non-return valve...
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Page 14: Condensation Drain
- Wall configuration (see figure 9) Type: Manufacturer: Pipe material flue tube: Pipe material air supply: Pipe diameter BFM 30: BFM 50: BFM 80: Angle: Measurement BFM 30 min. - Page 15 - Roof discharge (see figures 10 and 11). Type: Manufacturer: Pipe material flue tube: Pipe material air supply: Pipe diameter BFM 30: BFM 50: BFM 80: Angle: Measurement BFM 30 min. < 7000 All measurements are in mm. The following applies for the horizontal pipe: slope of at least 5 mm per metre of pipe to the water heater.
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Page 16: Electrical Connection
2.1.6 Electrical connection All electrical connections must be carried out by a registered electrical contractor to the relevant regulations. The BFM must be connected to a supply voltage by means of a permanent electric connection and have a feeder cable not less than 3 x 1,0 mm². Supply voltage Supply network frequency... - Page 17 IM D 0 05 5 R 1 Figure 12 - Electrical connection diagram BFM...
- Page 18 Figure 13 - Connection diagram control-column. D) Transformer 230 E) Air proving switch F) EMC single phase filter G) RESET knob H) Thermostat frost K) Thermostat regulation L) Switch ON/OFF IM D -0 06 3 M) Thermostat overheat N) Thermostat high limit P) Automatic burner controller R) Relay X) Plastic connector strip...
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Page 19: Turning The Water Heater On
2.2 Turning the water heater on 2.2.1 Filling the water heater 1. Assemble the drain-off tap and check that it is closed. 2. Open the cold water tap to the water heater and open all taps on hot water outlet points to vent them. The heater is filled as soon as cold water pours out of all outlet points. -
Page 20: Checking The Gas Pressures
2.5 Checking the gas pressures The nominal load has been set at the correct value in the factory. A further check of the pressure should be carried out during the commissioning of the unit. A dangerous situation can occur if the following instructions are not followed carefully. -
Page 21: Conversion To Another Gas
Conversion to another gas Important: Install a gas valve suitable for the type of gas to be used. If the water heater has to function on a gas category (LP or natural gas) other than the gas set as standard (ex works), the water heater must be converted to the applicable gas category with the associated conversion kit(s). -
Page 22: Maintenance
Maintenance The water heater must be checked and cleaned regularly (at least once a year) by an accredited installer, so that proper operation is guaranteed. The bar burners, control and safety valves must also be checked. (see figure 17). Anode The life of the anode is determined by the quality and the quantity of water flowing through the water heater. -
Page 23: Condensation
2.10 Condensation If the water heater has been filled with cold water or if the hot water usage has been very high, normally condensation of the flue gasses will occur on the cold sides of the combustion chamber and the flue tubes. The water drops will fall on to the burner bed which can cause a hissing sound. -
Page 24: For The User
3. FOR THE USER 3.1. Instructions for use Installation and commissioning of the water heater should only be undertaken by a registered installer. 3.1.2 Filling the water heater 1. Assemble the drain-off tap and ensure it is closed; 2. Open the cold water tap to the water heater and open all taps on hot water drain-off points to vent them. -
Page 25: Fault Finding Userl
4. FAULT FINDING Fault finding USER No or insufficient hot water. Check whether the electricity is turned on. Check whether the gas supply is turned Does the ON/OFF switch light Is the water heater in operation? Does the RESETswitch light Push RESET switch up to three times Is the... -
Page 26: Fault Finding Installer
4.2 Fault finding INSTALLER Check gas connection and the electricity supply make sure that they are switched on. Does the ON/OFF switch light up? Check if ON/OFF switch is in position 1? ON/OFF switch in position 1. Is the water heater in operation? Does the RESET switch... -
Page 27: Detailed Fault Finding Installer
4.3 Detailed fault finding INSTALLER Check voltage present at connection 1. Check voltage present after FILTER Check voltage present at gate 3 ON/OFF switch Check voltage present at gate 11 and 12 CONTROL THERMOSTAT. Reinstate voltage supply Ensure connections correct, if yes replace FILTER Ensure connections correct, if yes replace ON/OFF switch... - Page 28 Check voltage present at GATE 12 MAXIMUM THERMOSTAT? Check voltage present at GATE 1 BURNER AUTOMATION S4560D 1150? Check voltage present at GATE 8 BURNER AUTOMATION Is VENTILATING FAN in operation? Check voltage present at GATE 7, BURNER AUTOMATION Ensure connections correct Check voltage present at GATE 7, BURNER...
- Page 29 Check Ensure connections voltage present at correct, if yes replace GATE 12 ECO Check voltage present at Ensure connections GATE 11 BURNER AUTOMATION Check voltage present at voltage present at GATE 10 BURNER GATE 2 BURNER AUTOMATION AUTOMATION Problem solved Does the RESET switch light up? RESET the water heater...
- Page 30 Water heater in in operation? IONISATION PROBLEMS. Problem Carry out 3 RESET cycles to make solved sure the pilot is provided with gas. Check gasconnections towards the pilot burner. Carry out one more RESET cycle. If no operation is valid replace the entire PILOT BURNER assy.
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Page 31: Warranty
A.O. Smith Water Products Company will not be liable by virtue of this guarantee or otherwise for damage to any persons or property when arising out of contracts or tort. - Page 32 0305 664 R0...