General and electrical specifications, Unit | A.O. Smith BFM - 120

is

Dimensions (all measurements in mm unless otherwise indicated)

Dimens	Description	BFM30	BFM50	BFM80	BFM100	BFM120
ion

A	Total height	2000	2000	2020	2020	2020

B	Height of top of appliance	1800	1800	1820	1820	1820

C	Position on pallet	580	580	580	580	580

D	Appliance diameter	710	710	710	710	710

E	Depth	1000	1000	1000	1000	1000

F	Width	755	755	755	755	755

G	Diameter of chimney flue	80	100	130	130	130

Hy	y-position air supply	-	-	-	235	235

K	Height of gas connection	600	600	600	600	760

L	Diameter of Air supply	125	150	200	130	130

M	Height of cold water supply	600	600	590	590	590

N	Height of hot water outlet	1640	1640	1655	1655	1655

P	Height of cleaning opening	770	770	760	760	760

R	Height of drain valve connection	550	550	540	540	540

S	Height of T&P valve connection	1600	1600	1600	1600	1600

1	Cold water supply connection (external)	R11/2	R11/2	R11/2	R11/2	R11/2
2	Hot water outlet connection (internal)	Rp11/2	Rp11/2	Rp11/2	Rp11/2	Rp11/2
3	Gas control connection (internal)	Rp3/4	Rp3/4	Rp3/4	Rp3/4	Rp1
4	Drain valve connection (internal)	Rp11/2	Rp11/2	Rp11/2	Rp11/2	Rp11/2
5	T&P valve connection (internal)	1 - 11.5	1 - 11.5	Rp11/2	Rp11/2	Rp11/2
		NPT	NPT
6	Cleaning/inspection opening	Ø 100	Ø 100	Ø 100	Ø 100	Ø 100

3.4.2General and electrical specifications

General and electrical specifications

DESCRIPTION	Unit	BFM	BFM	BFM	BFM	BFM
		30	50	80	100	120

Volume	litres	309	298	253	253	253

Maximum operating pressure	bar	8	8	8	8	8

Empty weight	kg	230	245	295	320	320

Heating-up time ΔT = 45oC	minutes	37	22	12	9	8
Diameter of air restrictor	mm	36	42	54	48	64

Number of anodes	-	2	2	4	4	4

Number of bar burners/orifices	-	3	5	7	7	7

Number of flue tubes/flue baffles	-	5	7	16	16	16

Electrical power consumption	W	100	100	100	275	300

Supply voltage	volts	230	230	230	230	230
(-15% +10% VAC)

Mains frequency	Hz (± 1Hz)	50	50	50	50	50

IP class	-	20	20	20	20	20

Instruction manual BFM

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A.O. Smith BFM - 120 manual General and electrical specifications, Dimens Description, BFM100 BFM120 Ion, Unit, 100 120

Contents

Page Page Trademarks Read this manual carefullyLiability More information Gis Table of contents Performing maintenance TroubleshootingWarranty certificate Electrical diagram Introduction About the applianceWhat to do if you smell gas Regulations Maintenance Forms of notation Target groups Symbol Target groupIntroduction Overview of this DocumentChapter Target groups Description Gis Working principle of the appliance General workingPrinciple Appliance Working principle of the appliance Appliances heating cycle Protection for the appliance Pressure switch Water temperature protectionFlame probe Protection Description Unvented installation Safety of the instal- lationVented installation 3 T&P valve Gis Air humidity and ambient temperature InstallationAir humidity and ambient temperature Packaging Maximum floor load InstallationWater composition Working clearances Technical specifica- tions Plan and elevation of the appliance Dimensions of the appliance Dimens Description General and electrical specificationsBFM100 BFM120 Ion Unit Description Unit Gas dataNatural gas G20 20 mbar LP gas data G30 30 mbar butane Installation diagram Installation diagram Cold water side Water connections, VentedRecirculation pipe Hot water side Circulation pipe Water connections, Unvented See C in the installation diagram 3.5 Installation diagram Gas connection Circulation pipe Air supply and flue Introduction Installing chimney flue components for BFM 30, 50 Subject Description Concentric wall flue terminal BFM Concentric roof flue terminal BFM 30, 50 Installing chimney flue components for BFM 100 C33 concentric roof flue terminal specifications BFM 30, 50 Concentric wall flue terminal BFM100 M2000 MDV SCC C13 concentric wall flue terminal specifications BFM 100 Concentric roof flue terminal BFM 100 Electrical connection 11 C33 concentric roof flue terminal specifications BFM 100 Mains power Fan Alarm Off Connecting the mains power Gas control for BFM 30 through Checking the supply pressure and burner pressure Gas control for BFM BFM BFM 30, 50, 80 Conversion Conversion to a different gas category Conversion to a different gas category Orifice replacementPage Conversion to a different gas category Filling Filling Draining Draining Draining unvented installations Draining vented installations Gis Control panel ON/OFF switchExplanation of icons Control thermostat Control panel Burner control reset button Error conditions Status of the applianceOperating modes Status of the appliance Starting and running Starting the applianceAppliances heating cycle Starting and running Shutting down Shutting down the appliance for a brief period OFF modeIsolating the appliance from the mains Shutting the appliance down for a long period Shutting down Control thermostat 7.5 Control thermostat Troubleshooting Symptom Cause Solution Remark Gas smell Troubleshooting general errorsWater leakage Explosive ignition Symptom Cause Solution Remark Insufficient hot water Troubleshooting insufficient hot water Troubleshooting No hot water Cycle Symptom Cause Solution RemarkPage Introduction Preparation for maintenance Performing maintenance Performing maintenance Descaling and cleaning the tankWater-side mainte- nance 12.3.1 Checking the anodes IMD-0235 R2 Clean the orifices Clean the burnersGas-side mainte- nance 12.4.1 Checking the flue baffles Finalising mainte- nance 13.1 General warranty Warranty certificate13.2 Tank warranty Conditions for Instal- lation and use Warranty certificate Electrical diagram Electrical diagram BFM Electrical Diagram Optional Components Electrical diagram Index Index 0306