TECHNICAL DATA
Model
DUNATECH
3
DUNATECH
4
DUNATECH
5
DUNATECH
6
DUNATECH
7
DUNATECH
8
Number
of
sections
3
4
5
6
7
8
Fuels
Output
range
kW
14
‐
17
20
‐
27
27
‐
34
33
‐
41
38
‐
46
42
‐
51
Net
weight
kg
135
165
195
225
256
286
Water
content
lt
22
28
34
40
46
52
Combustion
chember
volume
dm3
30
42
55
68
81
94
Fuel
loading
volume
dm3
20
28
36
45
53
62
Max
fuel
loading
height
cm
Temperature
control
range
°C
Maximum
operating
temperature
°C
Minimum
return
temperature
°C
Safety
system
activated
at
°C
Maximum
operating
pressure
bar
Flue
outlet
diameter
mm
Water
flow/return
connections
R
Height
(H2)
mm
Width
(A)
mm
Length
(L)
mm
515
615
715
815
915
1015
Fuel
type
Output
kW
12
‐
14.
18
‐
20
25
‐
27
30
‐
33
34
‐
38
42
‐
44
Efficiency
%
72
74
75
76
75
74
Boiler
class
No
2
2
2
2
2
2
Maximum
fuel
charge
kg
9
13.5
18
22.5
27
31.5
Combustion
period
at
max
load
h
Requested
fuel
parameters
Average
flue
gas
temperature
°C
280
275
240
240
260
260
Flue
gas
mass
flow
g/s
6.6
10.2
13.9
18.1
22.9
28.9
Required
draft
at
chimney
mbar
0.15
‐
0.2
0.15
‐
0.22
0.15
‐
0.25
0.15
‐
0.26
0.15
‐
0.27
0.15
‐
0.28
Waterside
resistance
for
∆
t=20
°K
mbar
0.13
0.51
1.03
1.81
2.92
4.63
0.48
1.36
2.50
4.18
6.53
10.14
A
f CO
%10 O
/N ³
Wood
logs
Wood
logs,
hard
coal
27
30
to
90
100
50
(recommended)
95
3
160
1
1/2"
950
490
2
to
4
hour
Maximum
water
content
20%
Maximum
cross
section
10
cm
x
10
cm
Average
calorific
value
17.000
‐
20.000
kJ/kg
Waterside
resistance
for
∆
t=20
°K
(with
safety
heat
exchanger)
mbar
900 1200
4
Average
content
of
CO
to
%10
O
₂
mg/Nm³
Fuel
type
Output
kW
15
‐
17
24
‐
27
31
‐
34
38
‐
41
43
‐
46
48
‐
51
Efficiency
%
72
74
75
76
75
74
Boiler
class
No
2
2
2
2
2
2
Maximum
fuel
charge
kg
13
18
23
27
32
36
Combustion
period
at
max
load
h
Requested
fuel
parameters
Average
flue
gas
temperature
°C
280
275
240
240
260
260
Flue
gas
mass
flow
g/s
10.1
15.5
20.8
26.9
33.8
41.5
Required
draft
at
chimney
mbar
0.15
‐
0.2
0.15
‐
0.22
0.15
‐
0.25
0.15
‐
0.26
0.15
‐
0.27
0.15
‐
0.28
Waterside
resistance
for
∆
t=20
°K
mbar
0.24
0.76
1.46
2.47
3.90
5.84
0.74
1.90
3.41
5.59
8.61
12.66
Average
content
of
CO
to
%10
O
₂
mg/Nm³
Waterside
resistance
for
∆
t=20
°K
(with
safety
heat
exchanger)
mbar
1800
‐
2200
900
‐
1200
Hard
coal
4
to
6
hour
Maximum
water
content
15%
Average
size
between
30
to
60
mm
Average
calorific
value
26.000
‐
35.000
kJ/kg
4
4
Summary of Contents for DUNATECH 2012
Page 20: ...EXPLODED VIEW 21 21 ...