Takagi T-K4-OS-NG Tankless Water Heater (Outdoor, Natural Gas), 190KBTU

Takagi T-K4-OS-NG Tankless Water Heater with gas inputs up to 190,000 BTU per hour and an energy factor of 0.82.

The T-K4-OS-NG has a built-in power venting system and was designed specifically for outdoor installations. The T-K4-OS does not require any additional Category III venting or vent caps, making installation one step easier for installers.

Takagi Tankless Water Heater T-K4-OS has max GPM of 8.0GPM and four preset temperatures: 113F, 122F (default), 131F, 140F.  

To achieve any temperatures other than those presets, use the Takagi TK-RE02 remote temperature controller .

To see more Takagi Venting Parts & Controls, please click here .

Features:

Fully modulating, gas fired tankless water heater;

Outdoor installation only;

Safety Features:

• Air-Fuel Ratio (AFR) sensor;
• Exhaust & Water Temperature Safety Control;
• Overheat Cutoff Fuse

Internal Freeze-Protection System;

Manual reset high limit switch;

Horizontal or Vertical Installation;

Specifications of Takagi T-K4-OS-NG:

Fuel Type: Natural Gas;

Max BTU Rating: 190,000 BTU/h;

Min BTU Rating: 11,000 BTU/h;

Max. Flow Rate: 8 GPM (Gallons Per Minute);

Water Pressure: 15 ‐ 150 psi (40 psi or above is recommended for maximum flow);

Energy Factor (Natural Gas): 0.82;

Hot/Cold Water Connections: 3/4" NPT;

Gas Connection: 3/4" NPT;

Weight: 34.6 lbs;

Dimensions (inches): 20.3" high x 13.8" wide x 8.5" deep;

Electric Consumption: 120 VAC ; Standby: 0.05 A, Operation: 0.73 A, Freeze-Protection: 0.93 A;

Ignition: Electric Ignition;

Natural Gas Pressure Inlet: 5.0" W.C. min.; 10.5" W.C. max;

Manifold Presure (Natural Gas): 2.5" W.C.;

Temperature Settings (dipswitch settings without remote controller): 113F, 122F, 131F and 140F;

Temperature Range (with TK-RE02 Remote Control): 99 - 167F (122F Default factory Setting);

Literature:

Takagi T-K4-OS Tankless Water Heaters Specs Sheet (pdf)
Takagi T-K4 Tankless Water Heaters Manual (pdf)

Takagi Product Guide 2010 (pdf)