BLACKHEAT® HE INSTALLATION OPERATION AND SERVICE MANUAL
3.3 Clearances Data - U-Tube
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.
4.Add 60 mm clearance to uncovered
.
FIGURE 10: U-TUBE, HORIZONTAL MOUNT
B |
A |
C 
D
Model
A
B
C
D
HE15UT
150
890
1580
760
HE20UT
150
970
1730
940
HE25UT
150
970
1730
940
HE30UT
150
1020
1910
1000
HE35UT
150
1170
1980
1090
HE40UT
150
1220
2050
1150
HE45UT
200
1270
2110
1200
HE50UT
200
1380
2210
1300
FIGURE 11: U-TUBE, ONE SIDE REFLECTOR
| A | Model | HE15UT | HE20UT |
|
| A | 150 | 150 |
B | C | D |
|
|
| B | 230 | 230 | |
|
| |||
|
| C | 1580 | 1760 |
|
| D | 1200 | 1380 |
HE25UT
150
230
1760
1380
HE30UT
150
230
1930
1500
HE35UT
150
230
2090
1660
HE40UT
150
230
2130
1710
HE45UT
200
230
2160
1760
HE50UT
200
230
2240
1860
FIGURE 12: U-TUBE, TWO SIDE REFLECTORS
A | Model | HE15UT | HE20UT |
|
|
| |
| A | 150 | 150 |
B | D | 590 | 640 |
C | B | ||
| C | 1660 | 1810 |
| D | 590 | 640 |
HE25UT
150
640
1810
640
HE30UT
150
690
1960
690
HE35UT
150
820
2110
820
HE40UT
150
860
2160
860
HE45UT
200
890
2210
890
HE50UT
200
1020
2320
1020
FIGURE 13: U-TUBE, FULL 45° MOUNT
A
B
D 
C
Model
A
B
C
D
HE15UT
200
200
1500
1070
HE20UT
200
200
1650
1170
HE25UT
200
200
1650
1170
HE30UT
200
200
1860
1320
HE35UT
200
200
1960
1550
HE40UT
200
200
2040
1620
HE45UT
200
200
2110
1680
HE50UT
200
200
2160
1780
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