Weil-Mclain 133-041-304 LGB-4 400 Input MBtu 85.1% AFUE Commercial Natural Gas Water Boiler Series 2

WATER BOILERS:

• Combination operating and high limit temperature control (LGB™-4 thu 20 only)
• Operating temperature control (LGB™-21 thru 23 only)
• High limit temperature control (LGB™-21 thru 23 only)
• Combination pressure temperature gauge
• 30 PSI ASME relief valve-side outlet
• Built-in air eliminator in end sections
• Probe-type low water cutoff, PS-851-120 (packaged only)

ADDITIONAL EQUIPMENT

• WFFP control panels (LGB-6 thru 23)
• WMBC control panels (LGB-5 thru 23)
• Probe-type low water cutoff, ps-851-120 (non-packaged water only)
• Factory-assembled sections (LGB-4 thru 14 only)
• Fire-tested packaged unit (LGB-4 thru 14 only)
• 1½" Inspection tappings with brass plugs — two for each section
• 80 PSI working pressure test of sections
• Water level controls and low water cutoffs
• Low-high-low firing (LGB™-6 thru 12 only)
• Stage firing (LGB™-13 thru 23 only)
• Energy management control systems (BCP panels)
• IRI, FM and CSD-1 control systems
• Natural gas to propane gas conversion kit
• W-M and PLUS indirect-fired water heaters
• W-M Maxiflo pool heaters
• W-M brazed plate heat exchangers

WFFP CONTROL PANEL EQUIPMENT STANDARD:

• WFFP-1 Panel (LGB-6 Thru 12)
• WFFP-2 Panel (LGB-13 Thru 23)
• 30-second time delay relay (two on WFFP-2)
• Two 24-volt DPDT relays (four on WFFP-2)
• Terminal block
• Fuse (two on WFFP-2)
• Toggle switch
• Four Indicator lamps (eight on WFFP-2)

ADDITIONAL:

• Alarm bell and transformer for remote indication of flame failure
• Alarm bell – panel mounted