Weil-McLain 381-359-361 - CGI-3 Series 5 Cast Iron Natural Gas Water Boiler, 43,000 BTU, Spark Ignition, with Taco 007e Circulator
Weil-McLain 381-359-361 - CGI-3 Series 5 Cast Iron Natural Gas Water Boiler, 43,000 BTU, Spark Ignition, with Taco 007e Circulator
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The Weil-McLain 381-359-361 is a CGI-3 Series 5 cast iron natural gas water boiler designed to generate reliable hydronic heating. Rated at an 84% efficiency level with an IBR heating output of 43,000 BTU, this unit includes an intermittent spark ignition system and a Taco 007e circulator. It supplies thermal energy directly into closed hydronic loops to satisfy space heating demands.
Cast iron sectional boilers provide steady thermal mass and effective heat exchange during continuous firing cycles. The integrated spark ignition lights the fuel mixture on a call for heat, while the circulator maintains fluid flow through connected system piping.
Key Performance Features:
- Thermal Output: Provides a 43,000 BTU IBR heating output rating.
- Cast Iron Construction: Built with cast iron body sections for durable heat transfer.
- Fuel Specification: Configured for natural gas operation using spark ignition.
- Operating Efficiency: Achieves an 84% efficiency rating during active heating cycles.
- Circulation Component: Comes equipped with a Taco 007e circulator to maintain water movement.
Application: Weil-McLain CGI-3 Series 5 natural gas hydronic heating systems. Confirm this part number against your existing unit, or send your model and serial number to National Boiler Supply to verify before ordering.
| Performance Parameter | Engineering Baseline Value |
|---|---|
| Manufacturer Part Number (MPN) | 381-359-361 |
| Model Designation | CGI-3 Series 5 |
| Body Construction | Cast Iron |
| Fuel Type | Natural Gas |
| Heating Output (IBR) | 43,000 BTU |
| Efficiency Rating | 84% |
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