Balanced
Combusion
System™
Sidewall Vented
Oil & Gas Water Heaters
Featuring Bock’s Legendary 
The heat exchanger with hundreds of turbofins to boost heat transfer
with less fuel.
20 to 113 Gallon capacities
60,000 to 190,000 BTU
Cobalt-enriched
Dual Magnesium Anode Rods to Inhibit Corrosion
Stainless steel concentric sidewall vent for maximum durability and
easy installation. BCS sidewall venting offers these benefits:
Air is warmed before entering burner to improve combustion efficiency
Burner operation is unaffected by room exhaust fans or negative air issues
Corrosive aerosols near water heater are not drawn into burner
80023.indd 1 | 5/20/2008 2:24:25 PM |