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from Flexiheat
It provides you with flexibility in choosing your preferred
fuel source
Waste/Multi Oil Boilers
At a time of rising fuel costs, the Flexiheat FMOB universal/waste oil boiler range, which can burn nearly
all vegetable, animal, conventional and waste oil, will
save you money.
Steel boiler for pressurejet gas/oil burnerReversed flame boiler range forpressure jet burners, suitable forsmall/middle size installations, wherethe traditional sturdiness and durationof the steel are favoured.
Dry combustionchamber with anti-condensate patentThe combustion chamber walls thatlean out to the flame are not directlycooled by the water because coveredby a series of triangular fins, welded
DIMENSIONS
500
1
EB
3
T4
T2T3
T1
H
F
A
T52
P
G
D
C
478
4
Key: 1 - Panel board 2 - Flame sight glass 3 - Boiler basement (up on request) 4 - Cleaning openingT1 - Central heating flowT2 - Central heating returnT3 - Chimney connectionT4 - Boiler drainT5 - Burner connection
TECHNICAL DATA
(*) Pressure losses for a flow rate corresponding to a ∆t of 15 K
kW
kW
l
m c.a.
m mc.a.
bar
ISO 7/1
mm
mm
mm
mm
kKGg
Models
30
33
50
0.09
2.8
4
Rp 1
570
640
775
580
140
44
48
67
0.12
4
4
Rp 11/4
660
730
815
630
210
52
57
67
0.15
3.7
4
Rp 11/4
660
730
815
630
210
to each other and to the furnacecylinder so that to form a drycombustion chamber. This improvesnotably the combustion in comparisonto that one obtained in the wetcombustion chamber, reducing thefouling of the heat exchange surfacesand the risks of acidic condensateformation, responsible of the corrosion.The bottom of the combustionchamber, constituted by a refractoryconcrete casting, contributes tocomplete the raising of the combustiontemperature, improving it.
Anti-condensate smokewayThe smokes continue their run withinboiler in the channels drawn betweenthe triangular baffles and the furnacecylinder in contact with the water.The particular processing of the baffleswith interrupting joints, annuls thethermal expansions and, thanks tothe wide surface that is heated, itsubsequently reduces thecondensation phenomena (patentedsystem).
Stainless steel turbulatorsAdjustable inside the smoke channels,they optimize the heat exchange andstabilize the counter pressure for theregular operation of the burner.
NOMINAL OUTPUT
NOMINAL INPUT
BOILER CONTENT
WATER SIDE PRESSURE LOSSES *
SMOKE SIDE PRESSURE LOSSES
MAX. WORKING PRESSURE
FLOW/RETURN CONNECTIONS
DIMENSIONS A
B
C
D
DRY WEIGHT
FMOB
• Warm water steel boiler for temperature up to 95°C• Total radiation, dry, anti-condensate combustion chamber• Hinged door with reversible opening• Output from 26 to 233 kW
26
28
48
0.09
2.5
4
Rp 1
570
640
675
480
120
FMOB26 FMOB30 FMOB44 FMOB52
4 Sight glassT1 C.H. flowT2 C.H. return
T3 Flue connectionT4 Burner axisT5 Boiler drain
1 Panel board2 Burner connecting plate3 Cleaning door
(64)55.000
(76)65.000
(93)80.000(105)
90.000(116)
100.000(140)
120.000(163)
140.000(186)
160.000(233)
200.000
690
690
690
760
760
760
760
760
860
722
722
722
812
812
812
812
812
937
990
990
990
1205
1205
1205
1385
1385
1437
190
190
190
190
190
190
190
190
190
305
305
305
350
350
350
350
350
421
480
480
480
500
500
500
500
500
580
115
115
115
130
130
130
130
130
165
--
--
--
--
--
--
--
--
1482
200
200
200
200
200
200
200
200
250
130
130
130
180
180
180
180
180
180
Rp ¾
Rp ¾
Rp ¾
Rp ¾
Rp ¾
Rp ¾
Rp ¾
Rp ¾
Rp ¾
86
86
86
126
126
126
151
151
203
0,10
0,13
0,16
0,10
0,10
0,14
0,20
0,25
0,22
1,5
1,8
2,5
3
3
5
8
14
18
5
5
5
5
5
5
5
5
5
MODAL
Type
Output
(kW)kcal/h
Input
(kW)kcal/h
Weight
kg
Max.allow.
workingpressure
bar
Smokeside
press.losses
mm w.c.
Water sidepress.loss(*)
m w.c.
Boilercapacity
liters
T5
ISO 7/1
T4Ø
mm
T3Ø
mmH
mmG
mmF
mmE
mmD
mmC
mmB
mmA
mm
DIMENSIONS
Rp 1½
Rp 1½
Rp 1½
Rp 2
Rp 2
Rp 2
Rp 2
Rp 2
DN 65
(71)61.000
(84)72.000(102)
88.000(115)
99.000(128)
110.000(155)
133.000(180)
155.000(206)
177.000(258)
222.000
330 x 670
330 x670
330 x 670
390 x 850
390 x 850
390 x 850
390 x 1030
390 x 1030
470 x 1070
Combustionchamber
dimensionsØi x Lg
mm
fig. 2* - For the model FHMOB233 the connections T1-T2 are flanged.The dimension H is applicable only to the model FMOB233
195
195
195
280
280
280
318
318
420
T1 - T2ISO 7/1
UNI 2278 PN16
CONNECTIONS
FMOB140
FMOB163
FMOB186
FMOB233
FMOB64
FMOB76
FMOB93
FMOB105
FMOB116
Day Tank
With all our heaters we can supply a 100L day tank. This tank comes complete with
a pump, motor and fuel filter as standard.
This day tank needs to be situated next to the heater. The main advantages of the tank are;-
• Via float suction it picks up the cleanest oil
• It picks up the latent heat from being in close proximately to the heater resulting in the oil being semi-
preheated prior to entering the burner.
• The tank also has a drainage point at the bottom allowing easy drainage of any water/contaminants
from the oil. This results in the oil being semi-preheated prior to entering the burner.
** You can run your bulk storage tank supply to this day tank but you will need a float switch and solenoid valve to
prevent oil overflow due to gravity
Flue gases cannot rise in a horizontal stack and bends also restrict their movement. If flue bends
are used then we recommend 45° bends instead of 90° and a gradual sloping stack
* Do Not – Use Unused Engine Oil – it doesn’t burn very well at all. * Synthetic Oils – If your oil is all synthetic then you must add at least 15% Heating oil /Diesel to ensure reliable starting. If the synthetic oil content is more than 50:50 to mineral oil, in your waste oil, then youmust add at least 15% Heating oil/Diesel to ensure reliable starting.
* NO – Water, Petrol, Paint Thinners * NO – Brake or Clutch Fluid * NO – Anti Freeze
Fuel’s – Please Ensure The Following -
Recommended