Series 900 Domestic Hot Water Boiler

Series 900 Domestic Hot Water Boiler

Superior Boiler Series 900 Boilers for providing Domestic Hot Water are efficient, ready-to-install indirect water heaters 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 32″ doorway, resulting in a very quick start-up. Each vessel contains a 97 foot copper coil through which the domestic hot water is circulated. This coil is surrounded by the hot boiler water, which transfers heat to the coil. Firing rates for the Series 900 Domestic Hot Water are available from 600,000 Btu/hr to 1,000,000 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 900 Domestic Hot Water Boiler is an indirect water heater manufactured to exceed ASME Section IV standards and typically is used to provide supply temperatures from the coil of between 140-180°F, yet can accept extremely low return temperatures (below 100°F) without shocking the boiler.  The temperature of the coil water is impacted by the temperature of the Space Heating side because the coil is immersed in that water. These indirect water heaters contain 73 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 75 gallons with a heating surface of 78 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 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:

  • Burner and Boiler are a UL listed package for Type B venting.
  • 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 Pumps
  • 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 900 Space Heating Boilers
Model #
File
600
700
800
900
1000

Boiler Efficiencies

Series 900 Space Heating Boilers
Model
Input (BTU/Hr)
Gross OutPut
Combustion Efficiency
GPM @ Riseº F
Pressure Drop Thru the Coil
600
600,000
508,800
85.0%
10.5 @ 100º F
2.86
700
700,000
589,400
84.0%
11.8 @ 100º F
3.53
800
800,000
664,800
83.0%
13.3 @ 100º F
4.53
900
900,000
746,100
83.0%
14.9 @ 100º F
5.65
1000
1,000,000
829,000
82.9%
N/A

Boiler Dimensions

Series 900 Space Heating Boilers
Feature
Dimension
Vessel Width
30.5"
Vessel Height
66"
Boiler Weight
1400 lbs
Boiler Depth w/ Burner
61"
Gas Inlet Height
12"
Return Water Inlet Height
9"
Top of Vessel to Bottom Main
9"
Height to Lower/Upper Coil Openings
35.25"/56"
Height to Pump Flange
38"
Height to Space Heater Return
23.5"
Height Required at Installation
90"
Clearance to Rear of Boiler
18"
Clearance to Front of Boiler
48"
Clearance to Side of Boiler
18"
Clearance Between Boilers
6"

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