Keystone Water Heater

Keystone Water Heater

Keystone Condensing Water Heaters produce high volume hot water with high energy efficiency. These products feature a stainless steel heat exchanger with a thermal efficiency between 95 and 97%. Their compact design minimizes floor space while the cabinet provides easy access to all components. The large user friendly control interface makes set-up easy. The advanced control modulates the water heater with a 5 to 1 turndown ratio. Up to 8 water heaters can be joined in a cascade while the control features parallel modulation and water heater rotation to maximize efficiency and service life.

Warranty Info

5 Year Limited Warranty & 1 Year Limited Parts Triangle Tube hereby warrants the Keystone Condensing Boiler &/or Keystone Condensing Water Heater when properly registered with our factory at the time of purchase (as set forth below) to be free from defects in material or workmanship. Triangle Tube will repair or, at its option, replace the component part under the conditions explained in paragraph 4 , hereof.

Features or Benefits

  • Perfectly sized for large residential and light commercial applications.
  • Compact Footprint
  • Modulating with 5 to 1 Turndown
  • Advanced Cascade Capability
  • Building Automation System Interface
  • LP Conversion Kit
  • PVC, PP, and SS Venting up to 100'

Performance Specifications

Water Heater Model Fuel Input MBH Thermal Efficiency % Output MBH Turndown Ratio
KW 199 T Natural Propane 40 - 199 97 193 5 : 1
KW 285 T Natural Propane 57 - 285 95 271 5 : 1
KW 399 T Natural Propane 80 - 399 96 383 5 : 1
KW 500 T Natural Propane 100 - 500 96 480 5 : 1
KW 600 T Natural Propane 120 - 600 97 582 5 : 1
KW 750 T Natural Propane 150 - 750 94 705 5 : 1
KW 850 T Natural Propane 170 - 850 96 816 5 : 1
KW 1000 T Natural Propane 100 - 1,000 95 950 10 : 1
KW 1200 T Natural Propane 120 - 1,200 95 1140 10 : 1