0631 Series Residential Tankless Water Heater
Our 631 series is perfect for homes with 1-3 showers. When properly sized, they provide an endless supply of hot water to an entire home. With state-of-the-art gas combustion technology, Noritz burners maximize output and provide temperature stability while maintaining low emissions. Built-in features include safety lock-out, freeze protection, and high elevation adjustment. PVC CANNOT be used for venting.
These units offer several innovations:
- Safety lock out - Default max. 120 degrees (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 7.1 GPM @ 35 degree temperature rise (6.3 GPM @ 45 degree 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.
| MODEL |
INSTALLATION |
WARRANTY |
| ENERGY FACTOR (EF)* |
| Natural Gas (NG) |
Propane (LP) |
|
| N-0631S |
Indoor/Outdoor |
12yr/5yr parts/1yr labor |
0.83 |
0.83 |
| N-0631S-OD |
Outdoor |
12yr/5yr parts/1yr labor |
0.82 |
0.83 |
*Energy Factor (EF) is a measurement of relative energy efficiency for a water heater; the higher the EF, the more energy efficient the water heater.
- 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
- Back-up battery compatible
- Recirculation compatible
- MSRP: $1,029.00 (unit only)
- QUALIFIES FOR UP TO $1,500 TAX CREDIT (2009-2010 only)
- WARNING!!! PVC cannot be used for venting. Use only Category III (4" stainless steel venting).
Accessories:
- Isolation valves (#IK-WV-4)
- Outdoor vent cap (#VC-4-1) for N-0631S model only.
- Pipe cover (#PC-1S)
- Remote controller (#RC-7649M; for Canada #RC-7650M)
- Remote controller cord (10 ft.: #RC-CORD10; 26 ft.: #RC-CORD26)
- Remote controller outdoor junction box (#RC-OJB)
- ScaleShield (#SS-HB-1)
- Recess box (#RB-600) for N-0631S-OD model only.
