
9
1.6 Clearance to Combustibles.
The minimum clearances to combustible materials are given in the tables below. These
minimum distances MUST be adhered to at all times.
Figure 7.a Diagram illustrating the clearance to combustibles (U tube shown)
VSUT / VSAUT
15/20
25/30
35/40
45/50
Above Reflector (VSUT NG ONLY)
A
180 180 180 180
Above Reflector
(VSAUT and ALL LPG ONLY)
A1
280 280 280 280
Above Burner / Heater Outlet
B
500 500 500 500
To the Sides
C
900 1000 1100 1100
Below Tubes
D
1500 1700 2100 2100
Horizontally from Heater Outlet
(UNFLUED)
E
1200 1200 1200 1200
End Wall (VSUT ONLY)
F
500 500 500 500
A/A1
C
E
F
D
B