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Noritz America NR501-OD-NG 5.0 GPM Outdoor Vent

Item # NR501-OD-NG
UPC # 817000012991
  • i Save space and provide a higher efficiency
  • i Giving you the most energy efficient model
  • i Easy to install and it's easy to maintain
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About This Product

Noritz America NR501-OD-NG 5.0 GPM Outdoor Vent

Our NR501 outdoor model is our newest and most affordable model for apartments, condominiums and townhouses with 1-2 showers. NR50 outdoor model is the way to upgrade your lifestyle to continuous hot water when you need it. This compact model is perfect in the southeastern region of the USA.

Key Features:
Outdoor model - NO VENTING REQUIRED - No expensive venting required
12 year warranty - Longer coverage than competition, 12 years on heat exchanger, 5 years on parts, 1 year labor
Optional Freezing protection kit - Freezing protection kit is sold separately
0.5 GPM min. flow activation - Capable to handle higher incoming water temperature than current residential series
1/2" Gas fitting - NO NEED TO UPSIZE - No need to upgrade gas line if pipe length is less than 20' (Natural Gas) from meter or 40' (Propane) from gas tank

Other Features:
Safety lock out - Default max. 120° (refer to owner's manual for higher temp)
Standard burner - High performance single flame burner
Fully modulating burner - Automatically adjusts burner level accordingly
Turbo Flow - Up to 5.0 GPM @ 30° temperature rise (4.2 GPM @ 45° rise)
Direct ignition - No standby pilot light
Thermal fuse - Automatic overheat protection system
Resin coated PC board - Increases durability and protection from elements
Automatic air regulator - Monitors internal temperature/maximizes burner efficiency
Resin coated PC board - Increases durability and protection from elements


 Home Size 
 Southern climate: 1.5 bathrooms
  Northern climate: 1 bathroom*
 Indoor Unit Dimensions            
 Outdoor Unit Dimensions  20.5” (H) x 13.8” (W) x 6.7” (D)
 Weight  33 lbs.
 Gas Consumption
  (NG & LP)
 Max. 120,000 Btuh - Min. 15,000 btuh
 Capacity Range  0.5-5.0 Gal./min.
 Energy Factor  0.82 (NG&LP)
 Thermal Efficiency  83%
 Temperature Settings  100-150° F (in 5° F Intervals) 160° F
 Accessories  Anchoring Screws, Freeze Protection Kit (optional)
   *Freeze Protection Kit is required for Northern climate





Available in Natural Gas (NG) and Propane (LP) models only.

  • Temperature Settings: 100-160oF (12 options)
  • Thermal efficiency for all models: 83%
  • Self-diagnostic onboard computer system
  • Battery back-up compatible
  • Recirculation compatible