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OUTSIDE is the service.
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INSIDE is plenty of gentle heat!
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 | ASME CODE CONSTRUCTION - Built-in Quality
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 | VERSATILE - Residential or Commercial Application
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 | OUTDOOR INSTALLATION - No Chimney or Boiler Room Required
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 | OVAL FIRE TUBE - Greater Efficiency, Over 80%
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 | CAN BE INSTALLED IN MULTIPLE UNITS- For Higher Capacity Requirements
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 | PLUS A NEW FEATURE ! -
Flue Collector and chamber base assembly are built of aluminized or galvanized steel for
added life and protection against atmospheric corrosion.
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|
 |

 | The Thermotron OS Series is ideal for any application, residential or
commercial . The Thermotron OS Outdoor Boiler is preassembled for simple and proper
installation. Access to burner controls for maintenance and adjustments is easy but not
quite "child's play". Model OS Series is supplied with a 3450 rpm flame
retention, forced draft burner with a fast acting fuel pump for smooth, clean starts and
stops. In addition to hydronic heating, provision can be made for indoor tankless water
heating or mated to an indirect water heater.
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 | In the rugged and dependable Thermotron OS Series of Outdoor Boilers,
Thermo-Dynamics has turned hydronic heating outside-in. We've taken the bulky, noisy,
exhaust-producing parts of the heating system and placed them outside. By doing this, we
have eliminated all need for chimney connections, making dependable hot water available
where it's never been possible before. And since it does not require an indoor chimney,
heat does not escape through this passage.
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 | The performance dependability of the THERMOTRON OS Series is the result
of years of testing and field trials. Special steel flue restrictors are incorporated to
assure quiet, efficient operation. Durable heat exchanger constructed according to ASME
code using appropriate heavy gauge steel boiler tubes and boiler plate. Precase refractory
combustion chamber surrounded by insulating pellets for minimum heat loss through base.
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National Board Stamped and Registered
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STANDARD EQUIPMENT
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ASME Code Boiler
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Aluminum Jacket w/Hear Shield Vent
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Insulation
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Ceramic Combustion Chamber 1-1/2" thick
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Altitude Gauge
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Relief Valve
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Key Vent
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3450 RPM Flame Retention Burner
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Burner Mounted Cadcell Protectorelay
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5 Year Limited Warranty
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Expansion Tank, Expansion Tank Piping
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L4081A Dual Aquastat
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3" Supply and Return Tappings
(Models 901 thru 1600)
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1-1/4" Supply and Return Tappings
(Model 510 thru 801)
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Model OS
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510
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560
|
640
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720
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801
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901
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1010
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1450
|
1600
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Gross Input
|
140,000
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154,000
|
175,000
|
189,000
|
210,000
|
245,000
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280,000
|
315,000
|
350,000
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Overall Efficiency
|
80.7
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80.0
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80.1
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80.6
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80.2
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80.5
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80.1
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*
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*
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Boiler Water Cap
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15
|
15
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14
|
14
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14
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25
|
25
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25
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25
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Flue Pipe Dia.
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6"
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6"
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6"
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6"
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6"
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8"
|
8"
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8"
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8"
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Firing Rate - GPA
|
1.00
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1.10
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1.25
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1.35
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1.50
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1.75
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2.00
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2.25
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2.50
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Width
|
22"
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22"
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22"
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22"
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22"
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26-1/4"
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26-1/4"
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26-1/4"
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26-1/4"
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Length
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31"
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31"
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31"
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31"
|
31"
|
34"
|
34"
|
34"
|
34"
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Height
|
38-1/2"
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38-1/2"
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38-1/2"
|
38-1/2"
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38-1/2"
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45"
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45"
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45"
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45"
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Weight
|
385
|
390
|
412
|
417
|
422
|
560
|
565
|
636
|
640
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* Not available over
300,000 BTU gross input.
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