Hot Water Boilers, Hydronic Heating, Steam Boilers

Friday July 25, 2008 ---- Over 80 Years of Quality and Experience

Select one of our Products Below:

Series 300 Combination Boiler - Atmospheric

Overview: The Triad Series 300 Atmospheric Boiler for Combination applications are ready-to-install packaged systems featuring a compact "in-shot" atmospheric burner matched with an efficient vessel. 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.

This boiler can be used to provide Space Heating and Domestic Hot Water or Space Heating and a Low Temperature loop from the same vessel! Each vessel contains a 60 foot copper coil through which hot water is circulated. This coil is surrounded by the boiler water, which transfers heat to the coil.

Firing rates for the Series 300 Atmospheric Combination boiler are available from 210,000 Btu/hr to 300,000 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.

Design: The Series 300 Combination Boiler is manufactured to exceed ASME Section IV standards and typically is used to provide water temperatures of between 60-130°F.

These vessels contain 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. The vessel capacity is 35 gallons with a heating surface of 34 sq. ft.

This boiler qualifies as a Category I gas appliance with industry standard controls wired to NEC specifications.

Safety: A well-made, heavy vessel is naturally a safer boiler. But TRIAD 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 Controls
Adams HA-300 Atmospheric Burner
Bell and Gossett Circulating Pump
Second Bell and Gossett Pump for the Coil
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.

Boiler Efficiencies:

Model	Input (BTU/Hr)	Gross OutPut	Efficiency Combustion	Efficiency Thermal	GPM @ Riseº F	Pressure Drop Thru the Coil
210-ATM	210,000	171,990	82.0%	80.6%	6.8 @ 50º F	1.36
300-ATM	300,000	240,400	80.0%	79.2%	9.5 @ 50º F	1.98

Options: TRIAD offers several options to customize your boiler. A job is not complete until the boiler has been properly equipped for the application.

Choice of burner manufacturers fired by natural gas, oil, propane, or dual fuel.
Fan-Damper relays
Barometric Dampers and Galvanized Tees
Clean-out openings and plugs
Microprocessor Control Panel for true lead-lag modulation
Factory built and customized primary mains and headers
Immersion Aquastats
Various Relief Valve sizes for different applications
Lifting Lugs
Rail Legs

Boiler Dimensions:

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 Lower/Upper Coil Openings	22"/46"
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"