Takagi TK-510C-NI Indoor Tankless Water Heater w/ Concentric Vent, Natural/Propane Gas Convertible, 199KBTU


Brand: Takagi

Mfr Part#: TK-510C-NI

Usually ships: within 5-7 business days
Qty Price
$919.95 / each & Free Shipping
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Takagi TK-510C-NI model is a non-condensing indoor natural gas (convertible to propane w/ kit included) tankless water heater with concentric type vent, intended for small to medium residential & commercial applications.


  • Ultra-Low NOx;
  • Concentric venting;
  • Field convertible from natural gas to propane;
  • Easy-Link up to 4 units (no additional parts or accessories needed); Multi-link up to 20 units;
  • Built-in freeze protection;
  • Safety features include Manual Reset Hi Limit (up to 194°F), Overheat Cutoff, Inlet & Outlet Thermistors for constant temperature monitoring, Air/Fuel ratio rod, Flame Sensor, etc.;
  • Lead-free compliant;
  • Complies with SCAQMD Rule 1146.2 (California & Texas);
  • AHRI certified;
  • NSF certified.

Technical Specifications:

  • Shower capacity at 70F (warm climates): 3.5 showers;
  • Shower capacity at 50F (cooler climates): 2.5 showers;
  • Fuel Type: Natural Gas (Propane conversion kit is included);
  • Gas Connections: 3/4" NPT;
  • Gas Consumption Input: 15,000-199,000 BTU/H;
  • Inlet Gas Pressure: 5.0-10.5" in W.C. (for Natural Gas); 8.0-14.0" in W.C. (for Propane);
  • UEF: 0.81;
  • Energy Factor (EF): 0.82;
  • Hot/Cold Connections: 3/4" NPT;
  • Water Connection Locations: Bottom;
  • Max GPM: 10;
  • Dimensions (H x W x D): 20-1/2" x 13-3/4" x 10-1/2";
  • Weight: 51 lbs;
  • LEED Rating: 0.0;
  • Emissions: less than 14 ng/J;
  • Venting: 3"/5" Concentric Vent;
  • Max. Vent Length: 43ft, (4) elbows max;
  • Max. Elevation: 10,100 ft;
  • Power Source: 120V/60Hz.


15-year limited warranty on heat exchanger in residential applications/10-year limited warranty on heat exchanger in commercial applications/5-year limited warranty on all parts
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