A.O. Smith BFC - 100, BFC - 50, BFC - 28 User Manual

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Cyclone BFC

Condensing Glass-Lined

Water Heater

BFC - 28/30/50/60/80/100

Meets EPC standards

Fully room-sealed condensing high-efficiency water heater (95%gross)

•Flexible ﬂ ue options (maximum length 115 m) allows installation almost anywhere • ThermoControl for easy ﬂ exible control/fault diagnosis • Meets latest EPC standards: Cyclone BFC 28-60: 0.902

•Utilises premix Low-NOx burner BFC 80/100 • Patented Cyclone burner BFC28-60 • All models suitable for natural or LP gas

•Programmable for legionella purge cycle • Scale formation is reduced through the improved design and location of the heat exchanger • Cyclone BFC 80/100: comes as standard with powered anodes to reduce maintenance requirements • Remote control connection • Voltage-free contact for general fault indication

•Optional ancillaries: Unvented kits • Destratiﬁ cation pump kit

•Powered anodes

Innovation has a name.

Cyclone BFC

Technical specifications

		BFC 28	BFC 30	BFC 50	BFC 60	BFC 80	BFC 100
Gas data natural gas 2H (G20)
Input*	kW	32.1	34.5	52.6	63.2	86.6	105.5
Output	kW	30.5	32.7	48.8	59.6	81.9	99.8
Inlet pressure	mbar	20	20	20	20	20	20

Burner pressure	mbar	8.5	8.5	8.5	11.5	7.0	6.0

Gas consumption**	m3/h	3.1	3.3	5.0	6.0	8.3	10.1
Diameter main orifice	mm	4.90	5.10	7.00	7.10	6.30	6.80
Max. flue gas temperature	°C	70	50	75	75	50	50
Flue gas discharge	kg/h	56.8	61.1	85.4	101.4	141.9	164.3

Gas data butane 3+ (G30)
Input*	kW	30.7	32.8	50.6	59.4	-	-
Output	kW	29.8	31.8	48.1	57.4	-	-
Inlet pressure	mbar	30	30	30	30	-	-

Burner pressure	mbar	30	30	30	30	-	-

Gas consumption**	kg/h	2.2	2.4	3.7	4.3	-	-
Diameter main orifice	mm	2.50	2.60	3.40	3.80	-	-
Max. flue gas temperature	°C	70	50	75	75	-	-
Flue gas discharge	kg/h	60.0	62.2	86.0	101.9	-	-

Gas data propane 3+ (G31)
Input*	kW	29.0	30.9	50.3	59.1	84.8***	103.3***
Output	kW	28.1	29.8	47.7	56.9	81.9***	99.8***
Inlet pressure	mbar	37	37	37	37	37***	37***

Burner pressure	mbar	37	37	37	37	13.0***	13.0***

Gas consumption**	kg/h	2.1	2.2	3.6	4.2	6.1***	7.4***
Diameter main orifice	mm	2.50	2.60	3.40	3.80	4.70***	5.10***
Max. flue gas temperature	°C	70	50	75	75	50***	50***
Flue gas discharge	kg/h	54.3	56.5	85.1	101.0	142.1***	176.4***

Draw-off capacity
Storage capacity	l	217	368	368	368	460	460
Max. temperature setting	°C	80	80	80	80	80	80
Tcold = 10ºC / Tset = 70ºC
30 min. ∆T=44°C	l	505	689	831	925	1222	1379

60 min. ∆T=44°C	l	802	1008	1308	1507	2023	2354
90 min. ∆T=44°C	l	1100	1327	1785	2089	2823	3329
120 min. ∆T=44°C	l	1398	1646	2262	2671	3623	4304
Continuous ∆T=44°C	l/h	595	638	954	1164	1601	1950

Heating-up time ∆T=44°C	min.	22	35	23	19	17	14
30 min. ∆T=50°C	l	444	606	731	814	1076	1214
60 min. ∆T=50°C	l	707	887	1151	1326	1780	2072
90 min. ∆T=50°C	l	968	1168	1571	1839	2484	2929
120 min. ∆T=50°C	l	1230	1449	1991	2351	3189	3787

Continuous ∆T=50°C	l/h	524	562	840	1024	1409	1716

Heating-up time ∆T=50°C	min.	25	39	26	22	20	16
30 min. ∆T=55°C	l	404	551	665	740	978	1109
60 min. ∆T=55°C	l	642	806	1046	1206	1618	1883
90 min. ∆T=55°C	l	880	1062	1418	1671	2258	2663

120 min. ∆T=55°C	l	1118	1317	1810	2137	2899	3443

Continuous ∆T=55°C	l/h	476	511	763	931	1281	1560
Heating-up time ∆T=55°C	min.	27	43	29	24	22	18
Electrical data
Power consumption	W	275	275	275	275	625	710

Power supply	VAC/Hz			230 (-15/+10%). 50 (+/-1Hz)
General
Fan rotational speed at ignition	r.p.m.	4500	4500	4500	4500	2790	3120

Working speed of fan	r.p.m.	5000	5400	6000	6660	5100	5700

Pressure differential	Pa	635/605	855/825	885/855	1085/1055	1005/975	1145/1115
Diameter of air restrictor	mm	23	23	28	29	36	38
Anodes	-	4	4	4	4	2	2
Maximum working pressure	bar			8

Shipping data
Weight empty	kg	177	214	214	214	480	480
Maximum weight	kg	394	582	582	582	940	940
Weight incl. packaging	kg	197	234	234	234	491	491

Width packaging	mm	790	790	790	790	920	920

Height packaging	mm	1550	2080	2080	2080	2060	2060
Depth packaging	mm	950	950	950	950	1020	1020

*** 3P (G31)

* Gas data on gross value ** Gas consumption at 15°C and 1013.25 mbar

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