Weil-McLain FLAME GUARDIAN WMBC-1A - Manual (Page 2)

Part Number 550-141-807/0298 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.
Front of
Boiler Panel
Drill (7) 1/8“
Holes In Jacket
to Mount
Bracket Drill (7) 1/8“
Holes In Jacket
to Mount
Bracket
Drill (3) Holes in Front
Drill (4) Holes in Side Drill (4) Holes in Side
55BGL
Figure 1
Mount control panel to jacket
as shown
Table 1
Pilot burner and flame sensor
locations
Boiler Model Flame Sensor * Pilot Burner *
LGB-6 2 9
LGB-7 2 11
LGB-8 2 13
LGB-9 2 15
LGB-10 2 16
LGB-11 2 16
LGB-12 2 16
* From left burner.