Roberts Gorden BH70DL/EF User Manual
B
LACKHEAT
®
I
NSTALLATION
O
PERATION
AND
S
ERVICE
M
ANUAL
6 of 74
3.2 Clearance Data - Linear and Double Linear
NOTE:
1. All dimensions are from the surfaces of all tubes, couplings, tees, elbows and crosses.
2. Clearances B, C and D can be reduced by 50% after 7500 mm of tubing downstream
from the burner.
3. All measurements are in millimeters.
* BH55ST only available in multiburner.
FIGURE 3: LINEAR & DOUBLE LINEAR, HORIZONTAL MOUNTS
Model
BH
1
5
S
T
BH
30
DL
BH
20
S
T
BH
40
DL
BH
25
S
T
/E
F
BH
50
DL/
E
F
BH
30
S
T
/E
F
BH
60
DL/
E
F
BH
35
S
T
/E
F
BH
70
DL/
E
F
BH
40
S
T
/E
F
BH
45
S
T
/E
F
BH
50
S
T
/E
F
& BH55S
T*
A
150
150
150
150
150
150
200
200
B
890
970
970
1020
1170
1220
1280
1330
C
1570
1650
1650
1780
1930
1970
2010
2080
D
890
970
970
1020
1170
1220
1280
1330
A
C
D
B
FIGURE 4: LINEAR & DOUBLE LINEAR, ONE SIDE REFLECTOR
Mo
de
l
BH15ST
BH30DL
BH20ST
BH40DL
BH25ST/EF
BH50DL/
E
F
BH30ST/EF
BH60DL/
E
F
BH35ST/EF
BH70DL/
E
F
BH40ST/EF
BH45ST/EF
BH50ST/EF
& BH55ST*
A
150
150
150
150
150
150
200
200
B
230
230
230
230
230
230
230
230
C
1580
1760
1760
1930
2090
2130
2160
2240
D
1200
1380
1380
1500
1660
1710
1760
1860
A
C
D
B
FIGURE 5: LINEAR & DOUBLE LINEAR, TWO SIDE REFLECTORS
Model
BH15S
T
BH30DL
BH20S
T
BH40DL
BH25S
T
/EF
BH50DL/EF
BH30S
T
/EF
BH60DL/EF
BH35S
T
/EF
BH70DL/EF
BH40S
T
/EF
BH45S
T
/EF
BH50S
T
/EF
& BH
55S
T*
A
150
150
150
150
150
150
200
200
B
590
640
640
690
820
860
890
1020
C
1660
1810
1810
1960
2110
2160
2210
2320
D
590
640
640
690
820
860
890
1020
A
C
D
B
FIGURE 6: LINEAR & DOUBLE LINEAR, 45° MOUNT
Model
BH
15S
T
BH
30D
L
BH
20S
T
BH
40D
L
BH
25S
T/E
F
BH
50D
L/E
F
BH
30S
T/E
F
BH
60D
L/E
F
BH
35S
T/E
F
BH
70D
L/E
F
BH
40S
T/E
F
BH
45S
T/E
F
BH
50S
T/E
F
& BH55ST*
A
200
200
200
250
250
275
300
300
B
200
200
200
200
200
200
200
200
C
1500
1660
1660
1860
1960
2030
2110
2160
D
1370
1520
1520
1630
1750
1820
1880
2000
A
C
D
B