Description
This product qualifies for a federal tax rebate of up to $600. Click here for details.
Takagi TK-540P-NEH model is a model is a high-efficiency condensing outdoor natural gas tankless water heater with a built-in hot water recirculation pump (for systems with a dedicated hot water return line). Intended for medium to large residential applications.
Features:
- Fully modulating, high-efficiency condensing design with commercial copper primary and 316L secondary heat exchangers
- Model with built-in DHW (Domestic Hot Water) recirculation pump (up to 100ft with 1/2″ pipe and up to 500ft with 3/4″)
- UEF 0.95 – Energy Star certified, may qualify for a rebate
- Remote temperature & pump controller included
- Up to 10 GPM max flow rate
- Built-in safety features include freeze protection, air-fuel ratio sensor, exhaust & water temperature control, overheat cut-off fuse
- Outdoor model – no vent pipes needed
- Electronic ignition – no pilot light
- 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: 4 – 3 Showers (5 GPM @ 75°F rise; 7.5 GPM @ 50°F rise; 10 GPM @ 38°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)
- UEF: 0.95
- Hot & Cold Water Connections: 3/4″ NPT
- Gas Connection: 3/4″ NPT
- Recirculation Connection: 3/4″ NPT
- Installation Altitude: 0 – 2,000 (de-rate for higher elevations, up to 10,100ft max – see manual for details)
- Power Supply: 120V, 60Hz (hardwired)
- Dimensions: 17-3/4″ Wide x 24-7/8″ High x 11-1/4″ Deep
- Weight: 60 lbs
Warranty:
15-year limited warranty on heat exchanger in residential applications/6-year limited warranty on heat exchanger in commercial applications/5-year limited warranty on all parts






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