HED-S
ERIES
I
NSTALLATION
, O
PERATION
AND
S
ERVICE
M
ANUAL
8
NOTE:
1. All dimensions are from the s
u
rfaces of all t
u
bes, co
u
plings and elbo
w
s.
2. Clearances B, C and D can be red
u
ced by 50% after 25' (7.5 m) of t
u
bing do
w
nstream
from
w
here the b
u
rner and b
u
rner t
u
be connect.
*When installed in the first 10' (3 m).
FIGURE 10: 2-FOOT DECO GRILLE AND PROTECTIVE GRILLE
(inches)
(centimeters)
Model
A
B
C
D
A
B
C
D
HED-40
6
27
53
27
16
69
135
69
HED-60
6
35
63
35
16
89
161
89
HED-80
6
38
66
38
16
97
168
97
HED-100
6
40
71
40
16
102
181
102
HED-125
6
46
77
46
16
117
196
117
HED-150
6
50
80
50
16
127
204
127
HED-175
8
52
82
52
21
133
209
133
FIGURE 11: LOWER CLEARANCE SHIELD*
(inches)
(centimeters)
Model
A
B
C
D
A
B
C
D
HED-40
6
34
27
34
16
87
69
87
HED-60
6
39
33
39
16
100
84
100
HED-80
6
40
38
40
16
102
97
102
HED-100
6
50
44
50
16
127
112
127
HED-125
6
54
48
54
16
138
122
138
HED-150
6
55
50
55
16
140
127
140
HED-175
- UNAPPROVED -
- UNAPPROVED -
FIGURE 12: VENTING
(inches)
(centimeters)
Model
A
E
F
A
E
F
HED-40
14
18
18
36
46
46
HED-60
14
18
18
36
46
46
HED-80
20
24
18
51
61
46
HED-100
20
24
18
51
61
46
HED-125
20
24
18
51
61
46
HED-150
20
30
18
51
77
46
HED-175
20
30
18
51
77
46
Radiant Tubes
Vent
Pipes
Unvented
Vented
A
E
F
Summary of Contents for COMPLETE HED Series
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Page 25: ...SECTION 6 HEATER INSTALLATION 19 FIGURE 18 Linear Heater Layout Overview ...
Page 35: ...SECTION 7 OPTIONAL HEATER ACCESSORIES 29 FIGURE 21 U Tube Heater Layout Overview ...
Page 62: ...HED SERIES INSTALLATION OPERATION AND SERVICE MANUAL 56 ...
Page 63: ...SECTION12 TROUBLESHOOTING 57 12 2 Manifold Gas Pressure Setting ...
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