CGA-3 - 51,000 BTU Output Boiler, Spark Ignition (Nat Gas) Zoom

CGA-3 - 51,000 BTU Output Boiler, Spark Ignition (Nat Gas)


Brand: Weil Mclain

Weil Mclain
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Fuel Type: Natural Gas
System Type: Hydronic (Water)
Width (Inches): 10"
Height (Inches): 52.375
Features: EI/Spark Ignition
Vent Size: 4"
Water Connection: 1"
Gas Connection: 1/2"
BTU Input: 70000
DOE Rating:
IBR Rating:
Warranty: 20 Year Limited Warranty on Heat Exchanger/2 yrs Parts
Boiler Type: Standard
Depth (Inches): 23-1/4"
Vent Type: Type B Vent (Chimney)

Description for Weil Mclain 381-357-802

Note: Product Title reflects this boiler's IBR Net Output Rating

Weil McLain CGa boilers are high efficiency, high quality, and easy to install and service. Applications include residential, light commercial, multiple boilers, indirect fired water heating, radiant heating, and more.

This Weil Mclain CGA-PIDN, Spark Ignition, Natural Gas, Atmospheric, Packaged Water Boiler comes with a Taco 007 Circulator and requires 4" x 20' Minimum Chimney Size.


  • Factory Tested
  • Two-Piece Top Jacket Panel
  • Insulated Extended Steel Jacket
  • Cast Iron Sections with Built-in Air Separator
  • Radiation Plates
  • Vertical Draft Hood
  • Automatic Vent Damper
  • Combination Gas Valve for 24 Volt
  • Wiring Harness
  • Stainless Steel Burners
  • Electrical Junction Box
  • Rollout Thermal Fuse Element
  • High-Limit Temperature Control
  • Circulator Included
  • Spill Switch

PLEASE NOTE: The product weighs 200 lbs. and may require the use of a
lift gate.
If you do require a lift gate at your delivery, you'll have the option to add this FREE of charge when you checkout.

CGA-3 - 51,000 BTU Output Boiler, Spark Ignition (Nat Gas)


by PowerReviews
Weil MclainCGA-3 - 51,000 BTU Output Boiler, Spark Ignition (Nat Gas)

(based on 1 review)

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(4 of 4 customers found this review helpful)


Pleasantly Surprised


from NJ

Verified Buyer



      Best Uses

        Comments about CGA-3 - 51,000 BTU Output Boiler, Spark Ignition (Nat Gas):

        The ordering process was crisp and easy..the delivery happened EXACTLY as they said and was ACTUALLY a day earlier..the product is a well know boiler and the pricing made it a great online introduction to

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        • CGA-3 - 51,000 BTU Output Boiler, Spark Ignition (Nat Gas)


          What size Diaphragm expansion tank is recommenced for this unit if used with a Hydronic baseboard system? The reason I ask is it's rated at 51000 net so it's boarderline for the smaller tank but may need the larger tank.
          Asked on 4/11/2014 by Jeff from Virginia

          1 answer

          • CUSTOMER CARE


            We would recommend a #30 expansion tank (e.g. Amtrol part 102-1). 51,000 BTUs is on the borderline between a #15 and a #30 as you mentioned, but going up a size is the safe thing to do. The only harm in oversizing an expansion tank is the added equipment cost.

            Answered on 4/18/2014 by SupplyHouse Staff from NY
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