Description
Takagi TK-110U-I tankless water heater model is a direct replacement for T-KJr2-IN Natural (NG) and Propane (LP) gas non-condensing models. The new unit uses natural gas by default and comes with a propane conversion kit.
TK-110U-I indoor heater now includes a built-in temperature control on the front panel.
Cross-References:
- Rinnai: V65i (HE Series)
- State: GTS-110U-I
- American: GT-110U-I
Features:
- Factory-installed power cord with plug
- Field convertible from Natural Gas to Propane (kit included)
- Fully modulating, non-condensing, with copper heat exchanger
- Up to 6.6 GPM max flow rate
- Built-in safety features include freeze protection, manual reset hi limit (up to 194F), overheat cut-off fuse, inlet & outlet thermistors (for constant temperature monitoring), air-fuel ratio rod and flame sensor
- Flue vented using Cat. III stainless steel (such as Z-Vent or NovaVent)
- Electronic ignition – no pilot light
- Temperature controller on front panel
- Wall-mounting design with integrated brackets
- AHRI certified, Low-Lead compliant, Low Nox (SCAQMD Rule 1146.2 – California & Texas, NG models only)
Technical Specifications:
- Shower Capacity: 2.5 – 1.5 Showers (3 GPM @ 75°F rise; 4.5 GPM @ 50°F rise; 6.6 GPM @ 35°F rise)
- Min Flow: 0.4 GPM
- Gas Input (Min – Max): 15,000 – 199,000 BTU/h
- Fuel Type: Natural Gas (4 – 10.5 WC pressure) or Propane (8 – 14 WC pressure) – LP conversion kit included
- UEF: 0.81
- Hot & Cold Water Connections: 3/4″ NPT
- Gas Connection: 3/4″ NPT
- Flue/Exhaust: 4″ (up to 60ft of pipe length equivalent, max. 6 elbows) – Cat III Stainless Steel only
- Combustion Air Intake: 3″ (up to 60ft length, 6 elbows max) – Flexible Aluminum Duct, Cat. IV (PP, PVC or CPVC) or Cat. III (St. Steel)
- Installation Altitude: 0 – 2,000 (de-rate for higher elevations, up to 10,100ft max – see manual for details)
- Power Supply: 120V, 60Hz (factory wired plug-in cord)
- Consumption: 54W Operation, 2W Stand-by, 96W Freeze protection
- Dimensions: 13-3/4″ Wide x 22-1/2″ High x 10″ Deep
- Weight: 37.5 lbs
Warranty:
15-year limited warranty on heat exchanger in residential applications/5-year limited warranty on heat exchanger in commercial applications/5-year limited warranty on all parts






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