SECTION 3: C
LEARANCES TO
C
OMBUSTIBLES
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.
FIGURE 7: LINEAR & DOUBLE LINEAR, 2 FOOT DECO GRILLE
A
C
B
D
M
od
el
A
TH
15
S
T
A
TH
30
D
L
A
TH
20
S
T
A
TH
40
D
L
A
TH
25
S
T
A
TH
50
D
L
A
TH
30
S
T
A
TH
60
D
L
A
TH
35
S
T
A
TH
70
D
L
A
TH
40
S
T
A
TH
45
S
T
A
TH
50
S
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
FIGURE 8: LINEAR & DOUBLE LINEAR, PROTECTIVE GRILLE
A
C
B
D
M
od
el
A
TH
15
S
T
A
TH
30
D
L
A
TH
20
S
T
A
TH
40
D
L
A
TH
25
S
T
A
TH
50
D
L
A
TH
30
S
T
A
TH
60
D
L
A
TH
35
S
T
A
TH
70
D
L
A
TH
40
S
T
A
TH
45
S
T
A
TH
50
S
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
FIGURE 9: UNDERSHIELD **
A
B
D
C
M
od
el
A
TH
15
S
T
A
TH
30
D
L
A
TH
20
S
T
A
TH
40
D
L
A
TH
25
S
T
A
TH
50
D
L
A
TH
30
S
T
A
TH
60
D
L
A
TH
35
S
T
A
TH
70
D
L
A
TH
40
S
T
A
TH
45
S
T
A
TH
50
S
T
A
150
150
150
150
150
150
-
-
B
990
1020
1270
1270
1370
1400
-
-
C
840
965
1120
1120
1220
1270
-
-
D
990
1020
1270
1270
1370
1400
-
-
** When installed in the first 6 m - Not for use on EF models.
FIGURE 10: LINEAR & DOUBLE LINEAR, VENTING
M
od
el
A
TH
15
S
T
A
TH
30
D
L
A
TH
20
S
T
A
TH
40
D
L
A
TH
25
S
T
A
TH
50
D
L
A
TH
30
S
T
A
TH
60
D
L
A
TH
35
S
T
A
TH
70
D
L
A
TH
40
S
T
A
TH
45
S
T
A
TH
50
S
T
E
1000
1000
1000
1000
1000
1000
1000
1000
F
500
500
500
500
500
500
500
500
* ATH55ST only available in multiburner.
7 of 73
Summary of Contents for AIRA ATH Series
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