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Commercial Power Gas Water HeaterBock Large Capacity (Heavy Commercial & Industrial) Duel Fuel Water Heaters

C Glass-lined steel tanks up to 3/4" thick are constructed for 150 PSI working pressure and 300 PSI test pressure. ASME tanks constructed for 150 PSI. Enameled steel outer jacket. Skid-mounted with lift lug in stack. Combustion chambers have 12" x 15" access port and 6" spring-loaded inspection door. 2" NPT inlets, outlets and return connections. 3/4" tappings for dual bulb operating and high limit controls. Low water cutoff available. Thermometer tappings provided. T&P relief valve provided. Three year limited warranty on tanks; one year limited warranty on components.

  • Turboflue® - Bock's patented design is the industry's most advanced and efficient heat exchanger. Simply put, it heats water faster and uses less fuel, which reduces energy costs.
  • C-Glass®- Durable and exclusive porcelain enamel glass is used to line all tanks and Turboflues. Highly resistant to aggressive water. Fresh silica mixed daily to provide the highest quality.
  • Built to last - Hand-crafted from heavy gauge steel. Longer life equals a higher "Return on Investment".
  • Multiple magnesium anode rods - Inhibit corrosion and maximize tank life. Electrolysis attacks the anode rods, not the welded seams of the tank.
  • Double pressure tested - Only Bock pressure tests its tanks twice.
  • Fully welded tank skirt - prevents noxious flue gases from escaping between the tank and jacket.
  • Insulation fiberglass (non CFC foam optional) - decreases standby heat loss.
  • Accurate temperature control - Only Bock offers dual aquastats or operating and high limits, as standard.
  • Spring loaded inspection door - Easy access for inspection and maintenance, also functions as a pressure relief valve.
  • Brass drain valve - Accessible, tamper-proof.
  • Factory installed T&P valve - CSA listed.
  • Multiple large hand holes for easy inspection and maintenance.
  • UL listed.
  • ASME construction available.
  • Integrated 2" steel skid - for safe and easy transfer.
  • Wet leg design - surrounds the combustion chamber with water to capture heat from the refractory.
  • Fan-assisted burner - facilitates proper system draft, provides clean, controlled combustion and higher efficiencies.
  • Externally mounted burner - provides easy installation and maintenance.
  • Direct spark ignition - with flame rod controls provides fail safe operation.
  • Connects to standard chimney - or a power vented system.
  • Barometric draft regulator.
  • LP gas optional.
  • 3 year limited warranty - on steel tank.
  • For your safety (and to comply with the warranty), have all water heater installations and Repairs completed by a licensed and insured contractor. All Bock Water Heaters require field setup and adjustment using combustion testing equipment per NFPA Standards.
  • Residential delivery may not be available for this unit - shipment may be made to your contractor, a commercial location, or to Will Call at the nearest freight terminal. Contact us for more information.
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Bock Large Capacity Duel Fuel Water Heater - 150 Series  (ASME Certification)
Bock 150DF-400 Water Heater
176 Gallon
400,000 BTU
Recovery: 447 GPH @ 90°F Rise
Minutes to Recovery: 24
Firing Rate: 2.8 gph
Shipping Wgt. 2,108 lb
Bock 150DF-600 Water Heater
168 Gallon
600,000 BTU
Recovery: 671 GPH @ 90°F Rise
Minutes to Recovery: 15
Firing Rate: 4.3 gph
Shipping Wgt. 2,208 lb
Bock 150DF-800 Water Heater
160 Gallon
800,000 BTU
Recovery: 894 GPH @ 90°F Rise
Minutes to Recovery: 11
Firing Rate: 5.7 gph
Shipping Wgt. 2,308 lb
Bock Large Capacity Duel Fuel Water Heater - 200 Series (ASME Certification)
Bock 200DF-450 Water Heater
221 Gallon
450,000 BTU
Recovery: 503 GPH @ 90°F Rise
Minutes to Recovery: 26
Firing Rate: 3.7 gph
Shipping Wgt. 2,700 lb
Bock 200DF-650 Water Heater
212 Gallon
650,000 BTU
Recovery: 727 GPH @ 90°F Rise
Minutes to Recovery: 18
Firing Rate: 4.7 gph
Shipping Wgt. 2,700 lb
Bock 200DF-850 Water Heater
204 Gallon
850,000 BTU
Recovery: 950 GPH @ 90°F Rise
Minutes to Recovery: 13
Firing Rate: 6.1 gph
Shipping Wgt. 2,700 lb
Bock 200DF-1150 Water Heater
192 Gallon
1,150,000 BTU
Recovery: 1,286 GPH @ 90°F Rise
Minutes to Recovery: 9
Firing Rate: 8.3 gph
Shipping Wgt. 2,700 lb
Bock Large Capacity Duel Fuel Water Heater - 250 Series (ASME Certification)
Bock 250DF-800 Water Heater
273 Gallon
800,000 BTU
Recovery: 898 GPH @ 90°F Rise
Minutes to Recovery: 18
Firing Rate: 5.8 gph
Shipping Wgt. 3,516 lb
Bock 250DF-1000 Water Heater
260 Gallon
1,000,000 BTU
Recovery: 1,130 GPH @ 90°F Rise
Minutes to Recovery: 14
Firing Rate: 7.3 gph
Shipping Wgt. 3,606 lb
Bock 250DF-1250 Water Heater
251 Gallon
1,250,000 BTU
Recovery: 1,393 GPH @ 90°F Rise
Minutes to Recovery: 11
Firing Rate: 9.0 gph
Shipping Wgt. 3,666 lb
Bock 250DF-1500 Water Heater
242 Gallon
1,500,000 BTU
Recovery: 1,703 GPH @ 90°F Rise
Minutes to Recovery: 9
Firing Rate: 11.0 gph
Shipping Wgt. 3,726 lb



IMPORTANT:  By purchasing this water heater from JupiterHeating.com, the customer is agreeing that the unit will be installed by a licensed, professional heating contractor; that the customer and installer will follow all local zoning regulations, as well as all manufacturer's installation instructions, policies, and warranty requirements; and that the customer has read and understood JupiterHeating.com's Terms of Sale.


Information Source: Bock Water Heaters

Bock Water Heaters

Information Source: Bock Water Heaters

Warning: Do not install on combustible flooring. Install in accordance with all local codes and ordinances and with the American Standards Association recommendations.