8
2.3 REX 400-600 BOILER
Characteristics
Efficiency 100%
(N.C.V.)
NG max flow
rate G20
NG max flow
rate G30
NG max flow
rate G31
Max flow rate
of flues
Efficiency at 30%
(N.C.V.)
kW
kcal/h
kW
kcal/h
%
m³/h
kg/h
kg/h
kg/h
%
Medium Temp.
70°C
Medium Temp.
70°C
REX 400
4000
3.440.000 4333 3.726.380
92,31
458,52
340,31
336,62
6831,95
91,80
REX 450
4500
3.870.000 4865 4.183.900
92,5
514,81
382,09
377,95
7670,67
91,90
REX 500
5000
4.300.000 5402 4.645.720
92,56
571,64
424,27
419,67
8517,44
91,90
REX 600
6000
5.160.000 6480 5.572.800
92,59
685,71
508,93
503,41
10217,08
91,90
Heat output
Heat input
Medium Temp.
70°C
Characteristics
Pressure losses
flue gas side
Heat losses through
the chimney
Heat losses through
the casing
Heat losses with
burner off
Press. losses
water side
Design
Pressure
Total
capacity
Total
weight
Electric
supply
Frequency
Insulation
class
Electric
power
mbar
%
%
%
°C
°C
°C
%
%
%
mbar
bar
l
kg
Volt ~
Hz
IP
W
GAS GASOIL HEAVY OIL GAS GASOIL HEAVY OIL (
Δ
T=12K)
With electr.
contr. (excluded
pump and burner)
N
at. g
as
Lpg
Ga
so
il
H
eav
y oi
l
REX 400
9,0
6,89
0,80
0,10
184 186
186
10,5 13,5
14,0
98
6
4450 7420 230
50
IP40
20
X X X X
REX 450
10,0
6,70
0,80
0,10
179 182
182
10,5 13,5
14,0
124
6
4900 7920 230
50
IP40
20
X X X X
REX 500
10,0
6,64
0,80
0,10
178 181
180
10,5 13,5
14,0
63
6
6200 9530 230
50
IP40
20
X X X X
REX 600
12,0
6,61
0,80
0,10
177 180
180
10,5 13,5
14,0
91
6
6900 11330 230
50
IP40
20
X X X X
Flue gas temp. at boiler
output and air at 20 deg. C
CO2
Fuel
Characteristics
Efficiency 100%
(N.C.V.)
NG max flow
rate G20
NG max flow
rate G30
NG max flow
rate G31
Max flow rate
of flues
Efficiency at 30%
(N.C.V.)
kW
kcal/h
kW
kcal/h
%
m³/h
kg/h
kg/h
kg/h
%
Medium Temp.
70°C
Medium Temp.
70°C
REX 400 F
4000
3.440.000 4195 3.607.700
95,35
443,92
329,47
325,90
6614,41
95,45
REX 450 F
4500
3.870.000 4720 4.059.200
95,34
499,47
370,70
366,68
7442,10
95,50
REX 500 F
5000
4.300.000 5245 4.510.700
95,33
555,03
411,94
407,47
8269,95
95,46
REX 600 F
6000
5.160.000 6295 5.413.700
95,31
666,14
494,40
489,04
9925,49
95,48
Heat output
Heat input
Medium Temp.
70°C
Characteristics
Pressure losses
flue gas side
Heat losses through
the chimney
Heat losses through
the casing
Heat losses with
burner off
Flue gas temp. at boiler
output and air at 20 deg. C
CO2
Press. losses
water side
Design
Pressure
Total
capacity
Total
weight
Electric
supply
Frequency
Insulation
class
Electric
power
mbar
%
%
%
°C
%
mbar
bar
l
kg
Volt ~
Hz
IP
W
GAS
GAS (
Δ
T=12K)
With electr.
contr. (excluded
pump and burner)
N
at. g
as
Lpg
Ga
so
il
H
eav
y oi
l
REX 400 F
11,0
3,85
0,80
0,10
114
10,5
98
6
4450 7540 230
50
IP40
20
X X - -
REX 450 F
11,0
3,86
0,80
0,10
114
10,5
124
6
4900 8040 230
50
IP40
20
X X - -
REX 500 F
11,0
3,87
0,80
0,10
114
10,5
63
6
6200 9670 230
50
IP40
20
X X - -
REX 600 F
12,0
3,89
0,80
0,10
115
10,5
91
6
6900 11480 230
50
IP40
20
X X - -
Fuel
H
H1
H2
H6
H10
L
L2
P
P2
P3
P4
P5
P6
Øb
Øc
N1
N2
N1/N2
N3
N4
N5
N6
N7
N8
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm mm DN/in DN/in
PN
DN/in DN/in DN/in
DN/in
DN/in DN/in
REX 400 REX 400 F
2326
2140 1135 1135 150
1980
1780
4310
3596 1105 2200 1005 450-500 400 600 200 200
16
50 1"1/4 50 1/2"-3/4" 1/2" 1/2"
REX 450 REX 450 F
2326
2140 1135 1135 150
1980
1780
4660
3946 1105 2550 1005 500-550 400 600 200 200
16
50 1"1/4 50 1/2"-3/4" 1/2" 1/2"
REX 500 REX 500 F
2529
2340 1235 1235 150
2180
1980
4729
3948 1174 2550 1005 500-550 450 650 250 250
16
65 1"1/4 65 1/2"-3/4" 1/2" 1/2"
REX 600 REX 600 F
2529
2340 1235 1235 150
2180
1980
5261
4488 1174 3100 987 530-580 450 650 250 250
16
65 1"1/4 65 1/2"-3/4" 1/2" 1/2"
Dimensions
N1 - Flow
N2 - Return
N3 - Fitting for instruments
N4 - System filling/drainage
N5 - Fitting for safety valves
N6 - Bulb wells
N7 - Condensation drain
N8 - Inspection well
Summary of Contents for REX F
Page 1: ...TECHNICAL MANUAL REX REX F REX K REX K F REX DUAL REX DUAL F PRESSURISED STEEL BOILERS...
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Page 18: ...18 1 2 6 3 4 5 9...
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Page 32: ...ASSEMBLY INSTRUCTIONS STAVES LINING...
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