4
Swirler
Fan Tube
PLAN VIEW
100 mm
254 mm
Heat Exchanger Length
Fan
U-Tube
Flanged Burner Tube
171 mm
273 mm
SIDE VIEW
PLAN VIEW
317 mm
100 mm
Heat Exchanger Length
Fan
Swirler
END VIEW
Figure 1.
Blackheat U-Tube and Linear Tube Configurations
2
2..6
6
B
BU
UR
RN
NE
ER
R S
SP
PE
EC
CIIF
FIIC
CA
AT
TIIO
ON
N
B
Bu
urrn
ne
err A
Aiirr P
Plla
atte
e
BH15
BH20
BH25
BH30
BH35
BH40
BH45
BH50
Identification Number:
14
15
12
6
7
9
10
11
G
Ga
as
s C
Co
on
ns
su
um
mp
pttiio
on
n **
BH15
BH20
BH25
BH30
BH35
BH40
BH45
BH50
Natural G20 (m
3
/h)
1.43
1.91
2.38
2.86
3.34
3.81
4.29
4.77
Natural G25 (m
3
/h)
1.66
2.22
2.77
3.32
3.88
4.43
4.99
5.54
Propane (m
3
/h)
0.56
0.75
0.94
1.13
1.32
1.51
1.69
1.88
Butane (m
3
/h)
0.43
0.57
0.72
0.86
1.00
1.15
1.29
1.43
G
Go
ov
ve
errn
no
orr P
Prre
es
ss
su
urre
e
BH15
BH20
BH25
BH30
BH35
BH40
BH45
BH50
Butane (mbar)
21.4
19.7
19.2
17.4
18.2
17.9
16.9
18.4
Butane (in wg)
8.6
7.9
7.7
7.0
7.3
7.2
6.8
7.4
Natural G20:
8.7 mbar
3.5 in wg
Natural G25:
11.1 mbar
4.5 in wg
Natural G20 Hi/Lo :
8.7/5.0 mbar
3.5/2.0 in wg
Natural G25 Hi/Lo :
11.1/6.5 mbar
4.5/2.6 in wg
Propane:
27 mbar
10.5 in wg
JJe
ett N
Nu
um
mb
be
err
BH15
BH20
BH25
BH30
BH35
BH40
BH45
BH50
Natural G20 & G25
3.4 mm 3.8 mm 4.3 mm 4.7 mm 4.9 mm 5.4 mm 5.8 mm 6.0 mm
Propane/Butane
2.1 mm 2.35 mm 2.7 mm 3.0 mm 3.2 mm 3.4 mm 3.6 mm 3.75 mm
Pressure Couple
1.95 mm 2.25 mm 2.5 mm 2.7 mm 2.9 mm 3.2 mm 3.25 mm 3.4 mm
(*) Based on Gross Caloric Value