Navien NWP500-50 Heat Pump Water Heater 208-240 V AC (50 gal) NWP500S050AUMB

Product Description

The Navien NWP500-50 is a hybrid heat pump water heater that uses 208-240 V AC, 60 Hz single-phase power and features a nominal 50 gallon storage capacity. The unit combines a stainless steel tank with aluminum condenser coils, a UEF of 3.85, built-in Wi-Fi, EcoPort CTA-2045 demand response readiness, and top/side water connection options for indoor installation and ducting.

• Nominal 50 gal capacity with 45.2 gal rated storage volume and 65 gal first hour rating
• Input voltage 208-240 V AC, 60 Hz; MCA 25.9A (208 V) / 28.8A (240 V); 30 A circuit breaker recommended
• Stainless steel tank, aluminum condenser coils, R-134a refrigerant (28.2 oz), quiet operation <45 dBA

Product Highlights

High-efficiency hybrid heat pump water heater with Wi-Fi, EcoPort demand response, ENERGY STAR certification, and top/side connections.

Product Information

Standard Information

• Brand: NAVIEN
• Manufacturer Part Number: NWP500-50

Technical Specifications

• Brand: Navien
• Model: NWP500-50
• Manufacturer Part Number: NWP500-50
• Alternate Part Number: NWP500S050AUMB
• Nominal Capacity: 50 gal (189.27 L)
• Rated Storage Volume: 45.2 gal (171.1 L)
• First Hour Rating: 65 gal (246.05 L)
• UEF: 3.85
• AHRI Certification Number: 217,191,097
• Dimensions: 21.7" W x 63.0" H (55.1 cm W x 160.0 cm H)
• Height: 63 in
• Diameter: 21.7-21.8 in
• Net Weight: 181 lbs (82.1 kg)
• Installation Location: Indoor
• Water Pressure Range: 15-150 PSI (1.05-10.55 kg/cm2)
• Cold Water Inlet: 3/4" NPT
• Hot Water Outlet: 3/4" NPT
• Drain: 3/4" NPT
• T&P Relief Valve: 3/4" NPT
• Condensate Drain: 3/4" NPT
• Element Thread: 1" NPSM (11-1/2 threads per inch)
• Casing Material: Cold rolled carbon steel
• Storage Tank Material: Stainless steel
• Condenser Material: Aluminum coil
• Air Intake Size: 8"
• Air Exhaust Size: 8"
• Safety Devices: Condensate level sensor; ECO (Energy Cut Off); Temperature and Pressure relief valve
• Input Voltage: 208-240 V AC, 60 Hz, 1 Phase
• MCA: 208 V (25.9 A) / 240 V (28.8 A)
• Recommended Circuit Breaker: 30 Amps
• Wire Size: Up to 10 AWG - Suitable for 167 °F (75 °C)
• Compressor LRA: 11.6 Amps
• Compressor RLA (208 V): 11.6 Amps (note: RLA value listed originally as 2 A appears incorrect; see note)
• Fan Motor FLA: 0.22 Amps (208 V)
• Upper Heating Element (208 V): 3,755 W
• Lower Heating Element (208 V): 3,755 W
• Upper Heating Element (240 V): 5,000 W
• Lower Heating Element (240 V): 5,000 W
• Refrigerant Type: R-134a
• Refrigerant Charge: 28.2 oz (800 g)
• Built-in Features: Wi-Fi; EcoPort CTA-2045 demand response readiness; multi-line LED control panel
• Operating Modes: Hybrid / electric
• Air Intake/Exhaust Flanges: Includes flanges for ducting
• Sound Rating: <45 dBA
• Energy Certification: ENERGY STAR certified; designed to meet NEEA AWHS Tier 4 requirements