Cyclone BFC
Condensing Glass-Lined
Water Heater
BFC - 28/30/50/60/80/100
Fully room-sealed condensing high-efficiency water heater (95%gross)
• Flexible flue options (maximum length 115 m) allows installation
almost anywhere • ThermoControl for easy flexible 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 • Destratification pump kit
• Powered anodes
Meets
EPC
standards
Innovation has a name.
Cyclone BFC
Technical specifications
Gas data natural gas 2H (G20)
Input*
kW
32.1
30.5
20
8.5
3.1
4.90
70
56.8
34.5
32.7
20
8.5
3.3
5.10
50
61.1
52.6
48.8
20
8.5
5.0
7.00
75
85.4
63.2
59.6
20
11.5
6.0
7.10
75
101.4
86.6
81.9
20
7.0
8.3
6.30
50
141.9
105.5
99.8
20
Output
kW
Inlet pressure
mbar
mbar
m3/h
mm
°C
Burner pressure
Gas consumption**
Diameter main orifice
Max. flue gas temperature
Flue gas discharge
6.0
10.1
6.80
50
kg/h
164.3
Gas data butane 3+ (G30)
Input*
Output
Inlet pressure
Burner pressure
Gas consumption**
Diameter main orifice
Max. flue gas temperature
Flue gas discharge
kW
kW
30.7
29.8
30
30
2.2
2.50
70
60.0
32.8
31.8
30
30
2.4
2.60
50
62.2
50.6
48.1
30
30
3.7
3.40
75
86.0
59.4
57.4
30
30
4.3
3.80
75
101.9
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
mbar
mbar
kg/h
mm
°C
kg/h
Gas data propane 3+ (G31)
Input*
Output
Inlet pressure
Burner pressure
Gas consumption**
Diameter main orifice
Max. flue gas temperature
Flue gas discharge
***
***
***
***
***
***
***
***
***
***
***
***
***
***
***
***
kW
kW
29.0
28.1
37
37
2.1
2.50
70
54.3
30.9
29.8
37
37
2.2
2.60
50
56.5
50.3
47.7
37
37
3.6
3.40
75
85.1
59.1
56.9
37
37
4.2
3.80
75
101.0
84.8
81.9
37
13.0
6.1
4.70
50
142.1
103.3
99.8
37
13.0
7.4
5.10
50
176.4
mbar
mbar
kg/h
mm
°C
kg/h
Draw-off capacity
Storage capacity
Max. temperature setting
l
°C
217
80
368
80
368
80
368
80
460
80
460
80
T
= 10ºC / T = 70ºC
set
cold
30 min. ∆T=44°C
60 min. ∆T=44°C
90 min. ∆T=44°C
120 min. ∆T=44°C
Continuous ∆T=44°C
Heating-up time ∆T=44°C
30 min. ∆T=50°C
60 min. ∆T=50°C
90 min. ∆T=50°C
120 min. ∆T=50°C
Continuous ∆T=50°C
Heating-up time ∆T=50°C
30 min. ∆T=55°C
60 min. ∆T=55°C
90 min. ∆T=55°C
120 min. ∆T=55°C
Continuous ∆T=55°C
Heating-up time ∆T=55°C
l
l
l
l
505
802
1100
1398
595
22
444
707
968
1230
524
25
404
642
880
1118
476
27
689
1008
1327
1646
638
35
606
887
1168
1449
562
39
551
806
1062
1317
511
43
831
1308
1785
2262
954
23
731
1151
1571
1991
840
26
665
1046
1418
1810
763
925
1507
2089
2671
1164
19
1222
2023
2823
3623
1601
17
1076
1780
2484
3189
1409
20
1379
2354
3329
4304
1950
14
1214
2072
2929
3787
1716
16
1109
1883
2663
3443
1560
18
l/h
min.
l
l
l
l
l/h
min.
l
l
l
l
814
1326
1839
2351
1024
22
740
978
1206
1671
2137
931
1618
2258
2899
1281
22
l/h
min.
29
24
Electrical data
Power consumption
Power supply
W
VAC/Hz
275
275
275
275
625
710
230 (-15/+10%). 50 (+/-1Hz)
General
Fan rotational speed at ignition
Working speed of fan
Pressure differential
Diameter of air restrictor
Anodes
r.p.m.
r.p.m.
Pa
mm
-
4500
5000
635/605
23
4500
5400
855/825
23
4500
6000
885/855
4500
6660
1085/1055
2790
5100
1005/975
36
3120
5700
1145/1115
28
4
29
4
38
2
4
4
2
Maximum working pressure
bar
8
Shipping data
Weight empty
kg
kg
kg
mm
mm
mm
177
394
197
790
1550
950
214
582
234
790
2080
950
214
582
234
790
2080
950
214
582
234
790
2080
950
480
940
491
920
2060
1020
480
940
491
920
2060
1020
Maximum weight
Weight incl. packaging
Width packaging
Height packaging
Depth packaging
Cyclone BFC
Dimensions
BFC 28-60
A
C
D
E
1390
-
705
-
-
1910
-
705
-
-
1910
-
705
-
-
1910
-
705
-
-
2060
530
850
1000
900
2060
530
850
1000
900
F
G
H
80/125 100/150 100/150 100/150 130/200 130/200
1365
1905
265
375
1800
160
1910
205
175
75
1905
265
375
1800
160
1910
205
175
75
1905
265
375
1800
160
1910
205
175
75
2015
310
440
1855
225
2060
205
2015
310
440
1855
225
2060
205
Hx 265
Hy 375
K
M
N
Ny 205
P
R
S
1270
170
1390
170
85
290
225
290
225
900
1410
145
1410
145
1410
145
1425
240
1425
240
W 125
1
2
3
4
5
6
7
Cold water (external)
Hot water (external)
Gas control (internal)
Tank drain valve (internal)
T&P valve (internal)
R11/2
R11/2
Rp3/4
3/4
1-11.5 NPT
95x70
Cleaning and inspection opening
Condensation drainage (internal)
Ø40 (BFC 28)
Rp 1 (BFC 30-100)
Dimensions in mm. All Cyclone BFC water heaters receive a
three years warranty on the tank and one year on parts.
BFC 80-100
Cyclone BFC
Installation diagrams
Vented
1
3
4
5
6
9
Pressure reducing valve
T&P valve
Stop valve
Non-return valve
Circulation pump
Drain valve
10 Gas cock
11 Isolating valve
12 Temperature gauge
13 Condense drain
14 Hot water outlets
15 Expansion relief valve
16 Expansion vessel
17 Three way valve
18 Water tank
19 Float valve
A
B
C
D
E
Cold water
Hot water
Return circulation
Gas supply
Overflow pipe
Expansion vent pipe
H
A.O. Smith unvented system kits utilise combination valves.
Further installation and connection details can be found in
the Installation & Commissioning Manual.
Unvented
Cyclone BFC
Electrical diagram BFC 28-60
TERMINAL STRIP CONNECTIONS
CONTROLLER CONNECTIONS
J1 Connector for display to controller
J2 Connector for power supply to
controller
J19 Connector for extra error signal
J20 Connector for gas control
J21 Connector for program-
controlled pump
Earth
N
Neutral
L1 Phase input of controller
L2 Phase input of isolating
transformer (primary side)
L3 Phase output of isolating
transformer (secondary side)
L4 Phase input of program-controlled
pump
J24 Connector for fan
JP2 Connector for ionisation rod and
glow igniter
L5 Phase input of continuous pump
JP3 Connector for temperature
sensor T2
COMPONENTS
A
B
C
D
E
Controller
Ionisation rod
Glow igniter
Gas control
JP4 Connector for dummy
JP5 Connector for temperature
sensor T1
JP6 Connector for selection resistor
and pressure switch
Burner earth connection
Extra ON mode switch
Continuous pump
Program-controlled pump
Extra error signal
Isolating transformer
Double-pole mains switch
ON/OFF switch control
Display/Flat cable
Fan
Temperature sensor
(T2 - bottom of tank)
Dummy
Temperature sensor
(T1 - top of tank)
Selection resistor
Pressure switch
F
JP8 Connector for extra
ON mode switch
G
H
J
K
L
M
N
O
P
F1 Fuse
F2 Fuse
Colour cables
1 =brown
2 =blue
3 =yellow/green
4 =black
5 =white (flat cable)
6 =grey/beige
Q
R
S
T
Cyclone BFC
Electrical diagram BFC 80-100
TERMINAL STRIP CONNECTIONS
CONTROLLER CONNECTIONS
J2 Connector for power supply
to controller
J19 Connector for external error-signal
J20 Connector for gas-control
J21 Connector for program
controlled pump
J36 Connector for display
to controller
J39 Connector for fan controlled signal
JP2 Connector for ionisation rod and
glow ignitor
Earth
N
L
Neutral
Phase input of controller
L1 Phase output of isolating
transformer ( secundary side)
L2 Phase input of isolating
transformer ( primary side)
L3 Phase input of program-
controlled pump
L4 Phase input of frequency
controller
L5 Phase input of continuous pump
JP3 Connector for temperature
sensor T2
COMPONENTS
JP4 Connector for dummy
JP5 Connector for temperature
sensor T1
JP6 Connector for selection resistor,
pressure switch and anode
signaling
A
B
C
D
E
Controller
Ionisation rod
Glow ignitor
Gas control
Burner earth connection
External ON-mode switch
Program-controlled pump
External error-signal
Isolating transformer
Double-pole mains switch
Controller 0/1 switch
Display/Flat cable
Fan
F
JP8 Connector for extra
ON-mode switch
G
H
J
K
L
M
N
O
F1 Fuse
F3 Fuse
Temperaturesensor
(T2-bottom of tank)
Dummy
P
Q
Temperaturesensor
(T1-top of tank)
Colour cables
1 =brown
2 =blue
R
S
Selection resistor
Pressure switch
T
Potentiostat
3 =yellow/green
4 =black
5 =white (flat cable)
6 =grey/beige
7 = red
U
V
W
X
Y
Frequency controller
Argus-link interface
Electric anodes
Signaling for electric anodes
Mains choke and EMC filter
8 =green
Flue systems Cyclone BFC
A Cyclone BFC water heater should be installed according
category B23, C13, C33, C43 or C53*.
Installation options
C13
Concentric
Diameter (mm)
Max. length (m)
Max. 45/90° bends
80/125
100/150 100/150 100/150 130/200 130/200
40
7
40
7
40
7
15
4
15
3
15
3
B23
Parallel (standard diameter)
Diameter (mm)
Max. length (m)
80
25
100
80
100
45
100
25
130
115
2,4
130
60
L
L
/bend 90° (m) 3,9
equivalent
/bend 45º (m) 1,1
equivalent
4,6
1,2
4,6
1,2
4,6
1,2
2,4
1,4
1,4
Parallel (larger diameter for more length)
Diameter (mm)
Max. length (m)
100
100
130
100
2,4
130
100
2,4
130
100
2,4
150
100
2,6
150
100
2,6
C33
L
L
/bend 90º (m) 4,6
equivalent
equivalent
/bend 45º (m) 1,2
1,4
1,4
1,4
1,6
1,6
*
All Cyclone BFC are also approved for installations where the unit is supplied
without venting materials (C63).
Concentric flues
It is not permitted to use more than the specified number of
bends, even when the duct is shorter than the maximum
length. A 45° bend is equivalent to a 90° bend.
Parallel flues
- The maximum permissible length should be reduced by the
equivalent length of each bend. (Note: for a parallel installation
this means that 3 changes in direction amount to 6 bends
(3 in the supply duct and 3 in the flue).
- The maximum length also applies if a parallel installation has
different supply and flue duct lengths (B23, C53).
- Combined flues (C43) shall be fitted with a condensate drain.
C53
C43
Note: horizontal flue runs must be installed with a fall of at least
5 mm per metre.
Flue systems Cyclone BFC
Minimum space requirements
BFC 28-60
Ø80/125 Ø100/150 Ø100/150 Ø100/150 Ø130/200 Ø130/200
Minimal space for wall duct (mm)
V
550
550
550
550
640
640
W
X
725
790
790
790
940
940
1535
1460
1010
2075
1480
1030
2075
1480
1030
2075
1480
1030
2230
1620
1170
2230
1620
1170
Y
Y *
Minimal space for roof duct (mm)
V
1305
680
1500
1035
3325
2375
1415
465
1500
1035
3325
2375
1415
465
1500
1035
3325
2375
1415
465
1730
1120
3620
2670
1560
610
1730
1120
3620
2670
1560
610
W
X
2965
2015
1575
625
BFC 80-100
X **
Y
Y **
For the parts numbers of components and flue gas ducts, etc.
please refer to the “Maintenance and accessories” chapter.
*
Distance without concentric pipe between bend and wall duct.
** Distance without concentric pipe between appliance and roof duct.
|