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- High heat exchanger condensing efficiency
- Modulation down to 20% of full fire (5:1 turndown)
- Sealed combustion chamber
- Pre-mix stainless steel burner
- Low NOx system exceeds the most stringent regulations for air quality – 10 ppm NOx
- Horizontal or vertical direct vent
- Horizontal vent and air terminals
- Vent and air pipe lengths of up to 100 equivalent feet (each)
- Built-in condensate trap
- Vent temperature cutoff feature
- Indirect water heater priority (sensor included)
- 160 psi (1102 kPa) maximum working pressure
- Stainless steel heat exchanger with welded construction
- ASME "H" stamp
- 75 psi (517 kPa) ASME rated pressure relief valve
- Water flow switch
- Temperature & pressure gauge
- Drain valve
- Water flow switch
Triangle Tube is best known for two things: feats of hydronic innovation and incredibly efficient products. If you are looking for those qualities in your hot water boiler, the Keystone certainly fits the bill. The Keystone is a high-efficiency, condensing boiler for large spaces. The condensing technology behind the Keystone will capture and reuse gaseous heat that escapes traditional boilers. The stainless steel construction of the heat exchanger and an internal condensate trap will protect the KS 500 from corrosion. The Keystone's modulating burner scales heat production based on your needs and reduces unnecessary energy consumption. All told, the Keystone is an incredibly reliable and efficient water heating solution.
Triangle Tube Boiler Installation & Warranty Information
We recommend that the installation of all Triangle Tube Boilers and Water heaters be done by a licensed, trained and qualified technician with the proper knowledge and background.
Should you experience an issue during the installation or the initial startup of the unit, please do not contact the manufacturer. You should have the technician that installed the unit contact either us or the manufacturer. Triangle Tube cannot accept any service or warranty calls from anybody but a licensed technician.
Neither we or Triangle Tube can be held liable for improper installation and operation of any Triangle Tube boiler product purchased from our company. Should a warranty issue arise where parts will need to be replaced, an installation receipt will be required along with your sales receipt. Failure to provide a receipt or invoice may result in the warranty not being honored.
Additional Information
| SKU | KS 500 |
|---|---|
| Manufacturer | Triangle Tube |
| AHRI Certificate Number | 5297141 |
| Furnace Efficiency / AFUE | 95% |
| Heating BTU | 500,000 |
| Venting Type | Direct Vent |
| Efficiency | 95% |
| Electrical | 60 Hz |
| Electric Phase Filter | Single Phase |
| Connection | NPT |
| Type | Direct Vent |
| Fuel Type | Natural Gas |
| Certification | CSA Listed, ASME Certified, AHRI Certified, ISO Certified |
| Height | 38" |
| Width | 24.50" |
| Depth | 37" |
| Weight (in lbs) | 381.0000 |
| Warranty | Parts Warranty 1 Year, Heat Exchanger Warranty 10 Years |
| Resources | You will need Adobe® Acrobat® Reader to view PDF documents |
| Safety Information | PROPOSITION 65 WARNING |
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