Part Number 550-141-186/0703
9
• Installation • Start-Up • Maintenance • Parts
Figure 8
Base
assembly
Check for proper orifice size:
•
Natural gas – 3.95 mm
•
Propane gas – 2.40 mm
Base
assembly
Figure 7
Access shield
(sizes D, E, F
and G
shown)
Orifices
Assembly order
Burner seating
2a
Before assembling base, relocate access shield from lower shipping holes to upper mounting holes. See
Figure 7
.
•
Base sizes 4, 5, A, B and C — one mounting hole.
•
Base sizes D, E, F and G — two mounting holes.
Boiler assembly
—
—
—
—
—
base
base
base
base
base
Proper orifices must be used. Failure to do so will cause severe personal injury, death or substantial
property damage.
Assemble base(s) as shown in
Figure 8
, in the order shown in the table below. Dual base shown.
Level and straighten burners to avoid misfiring.
Base assembly must be located in order shown in
Base Arrangement Table
, below, so flue collector/
draft hoods, jackets, and gas controls are installed in correct position.
Burners must be properly seated in their locating slots with openings facing up. Front of burners
must rest fully over main burner orifices. Gas orifices must inject down center of burners. Failure to
properly level and seat burners will result in severe personal injury, death or substantial property
damage.
Base Arrangement Table (Note 1)
Boiler
Model
Number
Base Size
Boiler
Model
Number
Base Size
LGB-4
4
--
LGB-14
C
B
LGB-5
5
--
LGB-15
C
C
LGB-6
A
--
LGB-16
D
C
LGB-7
B
--
LGB-17
D
D
LGB-8
C
--
LGB-18
E
D
LGB-9
D
--
LGB-19
E
E
LGB-10
E
--
LGB-20
F
E
LGB-11
F
--
LGB-21
F
F
LGB-12
G
--
LGB-22
G
F
LGB-13
B
B
LGB-23
G
G
Note 1: From boiler left side (front view). Side panels
shipped in separate carton.
The boiler contains ceramic fiber and fiberglass materials. Use care when handling these materials per
instructions on
page 28
of this manual. Failure to comply could result in severe personal injury.