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CGI-3 - 42,000 BTU Output Cast Iron Boiler, Spark Ignition - Series 4 (LP Gas)
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381-359-016 has been discontinued
Discontinued April 17, 2026
This product was discontinued by the manufacturer.
MANUALS (4)
This item replaces: 381-357-906
Schematic Feature!
Replacement Parts
Suggested Alternative:
CGI-3 - 43,000 BTU Output Boiler, Spark Ignition w/ Taco 007e Circulator - Series 5 (LP Gas)
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Product Highlights
–
42000 Max BTUs
Propane
Power Vent, Stainless Steel
20 Year (Heat Exchanger)/ 2 Year (Parts) Warranty
Hydronic (Water)
10" Width
Description
–
Heating equipment must be installed, commissioned, and serviced by a licensed and qualified professional in accordance with manufacturer instructions, applicable codes, and industry standards. Manufacturers do not accept warranty or technical support requests from homeowners or unlicensed individuals. All warranty and technical inquiries must be initiated by the licensed professional responsible for the installation.
Note: Product Title reflects this boiler's IBR Net Output Rating
CGi Gas Boiler Series 4
Note: Product Title reflects this boiler's IBR Net Output Rating
CGi Gas Boiler Series 4
- Gas fired water boiler with cast iron sections
- Natural draft and direct exhaust capability
- Can be used with natural or propane gas
- Now with built-in low water cut off functionality
- Compact design saves valuable living space
- No vertical draft hood and no mechanical vent damper
- Intermittent electronic ignition with standard components for easy servicing
- 84% AFUE
- US Department of Energy 2021 Compliant
Specs
–
| Application: | Heating |
|---|---|
| Fuel Type: | Propane |
| Efficiency: | 84% |
| Water Connection: | 1" |
| Gas Connection: | 1/2" |
| System Type: | Hydronic (Water) |
| Vent Size: | 4" |
| Width (Inches): | 10" |
| Weight (lbs): | 200 lbs |
| Vent Type: | Power Vent Stainless Steel |
| Height (Inches): | 28.375" |
| Depth (Inches): | 23-1/4" |
| Features: | EI/Spark Ignition |
| Boiler Type: | Standard |
| BTU Input: | 58000 |
| DOE Rating: | 49000 |
| BTU Output: | 42000 |
| IBR Rating: | 42000 |
| Warranty: | 20 Year (Heat Exchanger)/ 2 Year (Parts) |
Questions?
Speak with a real person who will go out of the way to help!
Call or text 888-757-4774
Monday – Thursday
8am–7:45pm
Friday
9am–7:45pm
Saturday – Sunday
9am–5:45pm
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Use Our CalculatorYou May Also Need
CGI-3 PIL (S4)
Replacement Parts
SKU: 381-359-016
Brand: Weil-McLain
Search Parts:
SEARCH PARTS
Replacement Part, SKU
460-003-017
Sorry, we don't currently sell this item. Request This Item
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Replacement Section Assembly
321-114-360
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Product Reviews
4 out of 3 reviews
100% would recommend this product
5 star
33%
4 star
33%
3 star
33%
2 star
0%
1 star
0%
Showing 1-3 of 3 reviews
I might buy this product again, not sure yet.
Heat 7200 sq ft of infloor heating system
none
Colorado
7 years ago
Verified Buyer
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Well packed and on time.
Appears to be a fine boiler. Have not fired it up yet.
My last Weil-McLain lasted 29 years!
Mailman
Sturgeon Bay, WI
11 years ago
Verified Buyer
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excelelnt
great Weil-McLain Quality
great Pex service
On time, well crated,
pete
lavallette, bj
13 years ago
Verified Buyer
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Product Q&A
3 Questions3 Questions
Q: how is it vented
Asked by randi 13 years ago
Add your answer
Verified Reply- PexSupply StaffCombustion air is drawn from the atmosphere, exhaust is power vented. Specific venting requirements can be found in the install instructions found here on our site : http://s3.pexsupply.com/product_files/381-357-858-Install.pdf
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Q: Wondering how many Square ft of living space will this unit deliver?
Asked by wesomedic 15 years ago
Add your answer
Verified Reply- PexSupply StaffThe BTU requirement of any given space depends on more than just the square footage. Please use our BTU calculator ( http://www.pexsupply.com/pex/control/BTUCalculator ) for more information.
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Q: pressure/temperature gauge
Asked by frank 16 years ago
Add your answer
Verified Reply- PexSupply StaffIf you are asking if this unit comes with the gauge, then yes, it does. If this was not your question, please contact our customer service department at 1-888-757-4774.
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