SECTION 3: C
LEARANCES
TO
C
OMBUSTIBLES
5
NOTE:
1. All dimensions are from the surfaces of all tubes, couplings and elbows.
2. Clearances B, C and D can be reduced by 50% after 25' (7.5 m) of tubing downstream
from where the burner and burner tube connect.
FIGURE 3: LEVEL SIDE REFLECTOR
(inches)
(centimeters)
Model
A
B
C
D
A
B
C
D
NHE-40
6
9
53
44
16
23
135
112
NHE-60
6
9
63
47
16
23
161
120
NHE-80
6
9
70
54
16
23
178
138
NHE-100
6
9
77
59
16
23
196
150
NHE-125
6
9
83
65
16
23
211
166
NHE-150
6
9
86
69
16
23
219
176
NHE-175
8
9
88
73
21
23
224
186
A
C
D
B
FIGURE 4: TWO SIDE REFLECTORS
(inches)
(centimeters)
Model
A
B
C
D
A
B
C
D
NHE-40
6
15
53
15
16
39
135
39
NHE-60
6
23
66
23
16
59
168
59
NHE-80
6
25
72
25
16
64
183
64
NHE-100
6
27
78
27
16
69
199
69
NHE-125
6
32
84
32
16
82
214
82
NHE-150
6
35
88
35
16
89
224
89
NHE-175
8
40
91
40
21
102
232
102
A
C
D
B
FIGURE 5: 45
°
TILT REFLECTOR
(inches)
(centimeters)
Model
A
B
C
D
A
B
C
D
NHE-40
8
8
51
46
21
21
130
117
NHE-60
8
8
60
54
21
21
153
138
NHE-80
8
8
66
60
21
21
168
153
NHE-100
10
8
74
64
26
21
188
163
NHE-125
10
8
78
69
26
21
199
176
NHE-150
12
8
84
74
31
21
214
188
NHE-175
12
8
85
79
31
21
216
201
Summary of Contents for NDUSTRIA NHE Series
Page 2: ......
Page 4: ......
Page 21: ...SECTION 6 HEATER INSTALLATION 17 FIGURE 16 Linear Heater Layout Overview ...
Page 37: ...SECTION 7 OPTIONAL HEATER ACCESSORIES 33 FIGURE 26 U Tube Heater Layout Overview ...
Page 69: ...SECTION12 TROUBLESHOOTING 65 ...
Page 74: ...NHE SERIES INSTALLATION OPERATION AND SERVICE MANUAL 70 ...
Page 76: ...NHE SERIES INSTALLATION OPERATION AND SERVICE MANUAL 72 ...
Page 77: ...SECTION 15 THE NDUSTRIA NHE WARRANTY 73 2020 ...
Page 78: ...NHE SERIES INSTALLATION OPERATION AND SERVICE MANUAL 74 ...
