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Crown Boiler Company BWC070
70,000 BTU, Water Boiler, 91 %Efficiency, Electronic Ignition, Natural Gas, Direct Vented

Compare to:$4,236.38
You save:$1,053.39

The BWC is an aluminum gas fired condensing boiler designed for use in forced hot water heating systems requiring supply water temperatures of 180°F or less. This boiler may be vented vertically or horizontally with combustion air supplied from outdoors. This boiler is not designed for use in gravity hot water systems or systems containing significant amounts of dissolved oxygen.

Please read this Important Safety Notice

Standard Features

  • 3/4" boiler drain
  • Condensate trap
  • Combination temperature/pressure gauge
  • A.S.M.E. relief valve (30 PSI)
  • Taco # 008 circulator
  • Stainless steel burner
  • Direct spark ignition
  • Variable-speed blower assembly
  • Differential pressure switch for proving air flow
  • Probe style LWCO
  • Safety limit control
  • Micro processor control module
  • System sensors

Heating Capacity
70000 BTU 

Effective Heating Capacity (BTUs)

Water Capacity
0.41 Gallons 

Net Water Rating
55000 BTU 

Efficiency (% AFUE)
91 % 

Efficiency Range
90 - 94%  

Horizontal Venting
Concentric, Dual  

Vertical Venting
Only Dual  

Max Vent Length- Horizontal
55 Ft 

Max Vent Length- Vertical
49.5 Ft 

Max Air Inlet Length- Horizontal
55 Ft 

Max Air Inlet Length- Vertical
49.5 Ft 

Max Vent Length (Horizontal- Concentric / Dual)
32 / 55 ft 

Max Inlet Length (Vertical)
49.5 ft 

Max Inlet Length (Horizontal- Concentric / Dual)
32 / 55 ft 

Min Vent Length (Concentric)
10 inches 

Min Vent Length (Dual Pipe)
2 ft 

ENERGY STAR® Qualified

Piping Connections - Water
1 1/4 Inch(es) 

Air Inlet Diameter
3 inches 

Dual Pipe Vent Diameter
3 inches 

Concentric Pipe- Vent Diameter
60/100 mm 

Product Weight
102 lbs 

Meets CSA Standards

17 87/100 Inches 

17 Inches 

31 1/2 Inches 

Cast Aluminum Sections Warranty
10 Years 

Parts Warranty
1 Years 
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(800) 865-5931
Monday to Friday
8:30am - 5:00pm Central
  Mailing Address
1901 N. Clybourn Avenue
Suite 200
Chicago, IL 60614
[email protected]
or Contact Us Here
(425) 928-2455
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