Series 300 Space Heating Boilers

Series 300 Space Heating Boiler

Triad space heating boilers are the ultimate ready-to-install packaged system featuring a perfectly matched powerful and efficient burner and boiler combination. All necessary boiler controls and secondary plumbing are in place and pre wired, and the vessels easily fit through a 30″ doorway, resulting in a very quick start-up. Firing rates for the Series 300 are available from 210,000 Btu/hr to 375,000 Btu/hr. However, many millions of Btu’s can be delivered by creating an efficient, fully modular system of up to 24 vessels operated by our computerized control panel.

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Design

The Series 300 is manufactured to exceed ASME Section IV standards and will typically provide temperatures of between 160-210°F for space heating or process water applications. The vessel capacity is 35 gallons with a heating surface of 34 sq. ft. These vessels feature 37 vertical firetubes, each of which is 1½” diameter, each fitted with a high-efficiency turbulator for maximum heat transfer. The combustion chamber is fully water-backed, with burners that are UL listed. This boiler qualifies as a Category I gas appliance with industry standard controls wired to NEC specifications.

Safety

A well-made, heavy boiler is naturally a safer boiler. But Superior Boilers also have a firebox design that is completely backed by water, along with extra safety controls on the boiler that results in a very safe and secure package.

Standard Features

The following standard features include nationally known parts and controls that are available at most supply houses, allowing for quick and easy repair and maintenance, which can dramatically reduce down time:

  • UL Listed Gas Trains and Control Systems.
  • Choice of Power Burners.
  • Main and Auxiliary Gas Valves
  • Air Flow Switch
  • Main Manual Leak Test Valve
  • Bell and Gossett Circulating Pump
  • Honeywell Aquastat Relay
  • Automatic Low Water Cutoff
  • Honeywell Second High-Limit With Manual Reset.
  • Burner Control Relay.
  • High Visibility Operating Light.
  • Pressure/Temperature Gauge
  • Pressure Relief Valve
  • 1½” Diameter Firetubes of SA178-A Steel
  • Turbulators for Maximum Heat Transfer
  • Two Inches of Insulation With a Painted Steel Jacket.

Support Documents

Cut Sheet (PDF)
Sample Spec (Word Doc)
O&M Manual (PDF)

Drawings

Series 300 Space Heating Boilers
Model #
File
210-HEP
300-HEP
375-HEP

Boiler Efficiencies

Series 300 Space Heating Boilers
Model
Input (BTU/Hr)
Gross OutPut
Combustion Efficiency
GPM @ Riseº F
210-HEP
210,000
182.280
87.0%
18.1 @ 20º F
300-HEP
300,000
258,000
86.0%
25.8 @ 20º F
375-HEP
375,000
321,750
86.0%
25.8 @ 25º F

Boiler Dimensions

Series 300 Space Heating Boilers
Feature Dimension
Vessel Width 22"
Vessel Height 57.5"
Boiler Weight 800 lbs
Boiler Depth w/ Burner 36"
Gas Inlet Height 11"
Return Water Inlet Height 7"
Top of Vessel to Bottom Main 8"
Height to Pump Flange 31"
Height to Space Heater Return 18.5"
Height Required at Installation 82"
Clearance to Rear of Boiler 18"
Clearance to Front of Boiler 48"
Clearance to Side of Boiler 18"
Clearance Between Boilers 3"

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