R O B E R T S
-
G O R D O N
S E C T I O N
1 2 :
T R O U B L E S H O O T I N G
pg 37
10.5"
(27 cm)
Natural Gas
L.P. Gas
6
5
4
3
2
1
0
1
2
3
4
5
6
3.5"
(9 cm)
6
5
4
3
2
1
0
1
2
3
4
5
6
OFF
ON
C1
Top View of Heater
Manometer
Figure 34. Checking Manifold Gas Pressure
