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Triangle Tube Keystone - 850,000 BTU - Hot Water Boiler - NG - 95.7% EFF - Direct Vented - 0 to 2,000 Ft. Altitude
Model:
KS 850
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Recommended Accessories
Expert Recommended Accessories
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Required Accessories
9
These accessories are required to properly setup/install this product.
Optional Accessories
10
Features
- (1) Triangle Tube KS 850 Hot Water Boiler
- (1) Outdoor Reset Sensor
- (1) Natural Gas to Liquid Propane Conversion Kit
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. Stainless steel construction of the heat exchanger and an internal condensate trap will protect the KS 850 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.
Product Features
Pre-Mix Burner
The pre-mix burner on Keystone boilers means that your heating will be environmentally friendly and clean. Pre-mixing the fuel improves air quality and reduces NOx output to less than ten parts per million, well within the strictest low NOx guidelines.
Easy Setup
Keystone boilers include several features that streamline the installation process. A large, easy-to-use display and consolidated connections at the top of the unit make setting up a Keystone quick and simple.
Communicating
Up to eight Keystone units may be staged together through the Keystone's controls. This allows you to expand your water heating to accommodate the largest of applications without sacrificing efficiency. The Keystone's controls also support integration into building automation systems.
PID Staging
The Keystone uses Proportional, Integral, Derivative (PID) logic for staging. PID staging will consider three things when deciding to activate a boiler: how far the water temperature is from the target temperature, how long the temperature has been there, and how quickly the temperature is changing. PID logic improves efficiency and averts temperature drops in your HVAC system.
Product Includes
Specifications
KS 850
General Information
Product Line
Keystone
Medium
Medium
Medium refers to the substance that carries heat through the heating system. Systems are either designed to use either Hot Water or Steam as a medium, and components are usually specific to one or the other.
Hot Water
Fuel Type
Fuel Type
To create heat, some form of fuel is required. Fuel Type specifies what the product uses as an input to create heat.
Natural Gas
Combustion Type
Combustion Type
Condensing appliances use leftover thermal energy from combustion gases to heat water in a secondary heat exchanger, resulting in higher efficiency and lower exhaust temperature.
Condensing
Vent Type
Vent Type
Products that use combustion (burning) of fuel to create heat also create potentially dangerous gasses that need to be exhausted (AKA "Vented"). Depending on the product, venting can be done via a chimney, through a side wall, or use a second vent to provide fresh air to the appliance.
Direct Vent
DHW Production
DHW Production
DHW (Domestic Hot Water) is potable water for uses other than space heat. Some boilers are able to provide DHW "out of the box", while others can do so with the purchase of optional accessories.
No
Modulating/Staging
Modulating/Staging
Stages are unique speeds or levels that equipment can operate at. More stages allow for better fine-tuned control of output, which improves comfort and efficiency. Modulating equipment can operate across a range of levels, giving the highest level of fine-tuned control. Learn More
Modulating
Connection Type
NPT
Mount Type
Floor
Minimum Altitude
0 Feet
Maximum Altitude
2000 Feet
Assembly Type
Packaged
Gas Conversion Kit
Included
Performance
Maximum Input Capacity
Maximum Input Capacity
The Maximum Input Capacity describes how quickly the appliance will use fuel when delivering it's maximum capacity. The units may change depending on the fuel being used.
850000 BTU
Minimum Input Capacity
170000 BTU
Efficiency Type
Thermal Efficiency
Efficiency
95.7 %
Electrical Data
Voltage
120 Volts
Phase
1
Frequency
60 Hz
Dimensions
Flue Connection Size
6 Inches
Supply Connection
2 Inches
Return Connection
2 Inches
Product Height
38 Inches
Product Width
24 1/2 Inches
Product Depth
55 Inches
Product Weight
502 Pounds
Certifications
CSA Listed
Yes
ASME Certified
Yes
AHRI Certified
Yes
ISO Certified
Yes
AHRI Reference Number
5297144
Warranty Information
Parts Warranty
Parts Warranty
A warranty is a safeguard from defects in manufacturing and can vary in length and terms. Some manufacturers require registration for extended warranty benefits, be sure to check out features and the warranty document. To see the manufacturer's warranty statement, click on the Manuals tab. Learn More
1 Year
Heat Exchanger Warranty
10 Years
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Triangle Tube Keystone - 850,000 BTU - Hot Water Boiler - NG - 95.7% EFF - Direct Vented - 0 to 2,000 Ft. Altitude
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