Weil-McLain FLAME GUARDIAN WMBC-1A Control Supplement page 2

Table 1
Pilot burner and flame sensor
locations
Figure 1
Mount control panel to jacket
as shown
2
LGB
(Series 2) — Control Supplement
I
Installation
1. For use with LGB-6 through 12 boilers.
2. LOCAL INSPECTOR MUST CERTIFY BOILER FOR IRI COMPLIANCE.
3. Assemble pilot burner and flame sensor to main burners with pilot brackets. See Figures 2
and 3. Install ground wiring as shown in Figures 2 and 3.
4. Reinstall burner assemblies. See Table 1 for pilot burner and flame sensor locations.
5. Assemble control panel to boiler. See Figure 1.
6. Install gas controls as shown in Figure 4, page 4.
7. IRI installations require manual reset controls. Weil-McLain recommends installing manual
controls in addition to standard as required by local inspector. Refer to the LGB Boiler
Manual, "Boiler Controls" section.
a. Steam boilers require a manual reset Low Water Cutoff and manual reset Pressure Limit
Control.
b. Water boilers require a manual reset Low Water Cutoff and manual reset Temperature
Limit Control.
Boiler Model
LGB-6
LGB-7
LGB-8
LGB-9
LGB-10
LGB-11
LGB-12
Flame Sensor *
2
2
2
2
2
2
2
* From left burner.
Panel Front of
Boiler
Drill (3) Holes in Front
Pilot Burner *
9
11
13
15
16
16
16
Drill (7) 1/8" Drill (7) 1/8"
Holes In Jacket Holes In Jacket
to Mount to Mount
Bracket Bracket
Drill (4) Holes in Side Drill (4) Holes in Side
55BGL
Part Number 550-141-807/0298