EF3 / BF3 / VF3 Series

SELECTION GUIDE:

LOW PRESSURE STEAM OR HOT WATER

• EF3 ENVOY , 2″ tubes, 77 to 1501 sq. ft. H.S.
• EF3 ENVOY , 2-1/2″ tubes, 1000 to 4500 sq. ft. H.S.
• BF3 BARON , 2-1/2″ tubes, 82 to 1000 sq. ft. H.S.
• VF3 VICTOR, 3″ tubes, 100 to 4500 sq. ft. H.S.

Special Features for these solid fuel systems include :

• FULL WETBACK construction prevents the short circuiting of flue gases
• Open furnace bottom (no base or refractory floor)
• Hinged furnace access door; front, rear or side 16 or 20 inch diameter
• Custom rear flue gas box outlet
• Integral front flue box liner protects insulation from wear and damage
• Outstanding inspection access as well as quick and easy maintenance
• Flushout and inspection openings are 3×4 inch handhole type. Offset studs ease installation.
• ASME fireside fusible plug
• A variety of other customer-specified options are available

OPTIONAL Hot Water Trim

• Relief valve(s)
• Pressure gauge with gauge cock
• Water temperature indicator
• Manual reset, probe type low water cutoff
• Operating temperature control
• Manual reset high limit temperature control
• High fire temperature control or proportional firing rate (modulating) control
• Drain valve
• Stack thermometer

OPTIONAL Steam Trim

• Safety valve(s)
• Waterglass set
• Pressure gauge
• Gauge cock
• Three trycocks
• Pressure control – high limit safety (manual reset)
• Pressure control – operating
• Pressure control – high fire or proportional firing (modulating) control
• McDonnell & Miller 157S low water cutoff and pump control
• Water column blowdown valve
• Manual reset, probe type auxiliary low water cutoff control
• Drain valve
• Stack thermometer

Options and Alternatives

• Auxiliary hinge mounted oil or gas backup burner
• Firing rate control pressure or temperature controller
• Stainless steel jacket
• Hinged access doors – 16, 20 or 24 inch pipe size
• Furnace pressure taps
• Additional peepsite assemblies