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Light Duty Commercial TTW®4 Power Vent Energy Saver Gas Water Heaters
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Light Duty Commercial TTW®4 Power Vent Energy Saver Gas Water Heaters
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Light Duty Commercial TTW®4 Power Vent Energy Saver Gas Water Heaters
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Light Duty Commercial TTW®4 Power Vent Energy Saver Gas Water Heaters
Light Duty Commercial TTW®4 Power Vent Energy Saver Gas Water Heaters (TW4-65S-70FB-3N)

Light Duty Commercial TTW®4 Power Vent Energy Saver Gas Water Heaters
Manufacturer N/A Bradford White®
Capacity N/A 48 U.S. gal40 Imp. gal182 L N/A 48 U.S. gal40 Imp. gal182 L N/A 48 U.S. gal40 Imp. gal182 L N/A 48 U.S. gal40 Imp. gal182 L N/A 65 U.S. gal54 Imp. gal246 L
Input Power N/A 67000 BTU/hr19.6 kW N/A 60000 BTU/hr17.6 kW N/A 67000 BTU/hr19.6 kW N/A 60000 BTU/hr17.6 kW N/A 70000 BTU/hr20.5 kW
First Hour Rating1 N/A 108 gal409 L N/A 108 gal409 L N/A 108 gal409 L N/A 108 gal409 L N/A 126 gal477 L
Type N/A Natural Gas N/A Liquid Propane Gas N/A Natural Gas N/A Liquid Propane Gas N/A Natural Gas
Recovery at 100 ºF Temperature Rise
N/A 65 U.S. gal/h54 Imp. gal/h N/A 58 U.S. gal/h49 Imp. gal/h N/A 65 U.S. gal/h54 Imp. gal/h N/A 58 U.S. gal/h49 Imp. gal/h N/A 68 U.S. gal/h57 Imp. gal/h
Recovery at 56 ºC Temperature Rise
N/A 246 L/h N/A 220 L/h N/A 246 L/h N/A 220 L/h N/A 257 L/h
Schematic N/A
Light Duty Commercial TTW®4 Power Vent Energy Saver Gas Water Heaters (TW4-65S-70FB-3N) - 2
Floor to Vent Connection A N/A 65-7/8 in1673 mm N/A 65-7/8 in1673 mm N/A 65-7/8 in1673 mm N/A 65-7/8 in1673 mm N/A 69 in1753 mm
Jacket Diameter B N/A 22 in560 mm N/A 22 in560 mm N/A 22 in560 mm N/A 22 in560 mm N/A 24 in610 mm
Vent Size C N/A 3 in76 mm
Floor to T and P Connection D N/A 50-1/8 in1273 mm N/A 50-1/8 in1273 mm N/A 50-1/8 in1273 mm N/A 50-1/8 in1273 mm N/A 53-1/2 in1360 mm
Floor to Gas Connection E N/A 11-3/4 in320 mm
Floor to Space Heating Return F N/A 13-1/2 in343 mm
Floor to Space Heating Outlet G N/A 50-1/8 in1273 mm N/A 50-1/8 in1273 mm N/A 50-1/8 in1273 mm N/A 50-1/8 in1273 mm N/A 53-1/2 in1360 mm
Floor to Heater Top H N/A 56-3/8 in1432 mm N/A 56-3/8 in1432 mm N/A 56-3/8 in1432 mm N/A 56-3/8 in1432 mm N/A 59-1/2 in1511 mm
Floor to Water Connection J N/A 57-3/4 in1467 mm N/A 57-3/4 in1467 mm N/A 57-3/4 in1467 mm N/A 57-3/4 in1467 mm N/A 60-3/4 in1543 mm
Depth K N/A 26-3/4 in679 mm N/A 26-3/4 in679 mm N/A 26-3/4 in679 mm N/A 26-3/4 in679 mm N/A 28-3/4 in730 mm
Approximate Shipping Weight N/A 188 lb85 kg N/A 188 lb85 kg N/A 188 lb85 kg N/A 188 lb85 kg N/A 222 lb101 kg
Maximum Equivalent Length for 3" Vent Pipe
N/A 60 ft
Maximum Equivalent Length for 4" Vent Pipe
N/A 180 ft
Minimum Equivalent Length for 3" Vent Pipe N/A 7 ft
Minimum Equivalent Length for 4" Vent Pipe N/A 15 ft
One 90º Elbows for 3" Vent Pipe N/A 55 ft
One 90º Elbows for 4" Vent Pipe N/A 175 ft
Two 90º Elbows for 3" Vent Pipe N/A 50 ft
Two 90º Elbows for 4" Vent Pipe N/A 170 ft
Three 90º Elbows for 3" Vent Pipe N/A 45 ft
Three 90º Elbows for 4" Vent Pipe N/A 165 ft
Test Pressure N/A 300 psi2068 kPa
Working Pressure N/A 150 psi1034 kPa
Gas Connection N/A 1/2 in13 mm
Style N/A Light-Duty Power Vent
Size N/A C
Industry Standards N/A ANSI Standards Z-21.10.3 ASHRAE 90.1b (Current Standards) C.E.C. Listed CSA® Certified
Features N/A The TTW® 4 FVIR Defender Safety System® Models Feature:
  • Advanced ScreenLok® Technology Flame Arrestor Design - Flame arrestor is designed to prevent ignition of flammable vapor outside of the water heater.
  • Flammable Vapor Sensor - Electronic sensor prevents burner operation if flammable vapors are detected. The sensor will also prevent operation if there is ongoing flammable vapor burn inside the combustion chamber.
  • Maintenance Free - No regular cleaning of air inlet openings or flame arrestor is required under normal conditions.
  • Sight Window - Offers a view into the combustion chamber to observe the operation of the pilot and burner.
All TTW®4 Models Feature:
  • Bradford White ICON System™ - Intelligent gas control with spark to pilot ignition system eliminates the constant burning pilot. This results in savings of pilot gas during stand by periods (120 V.A.C.).
    • Enhanced Performance - Proprietary algorithms provide enhanced First Hour Delivery ratings and tighter temperature differentials.
    • Advanced Temperature Control System - Microprocessor constantly monitors and controls burner operation to maintain consistent and accurate water temperature levels.
    • Intelligent Diagnostics - An exclusive green LED light prompts the installer during start-up and provides ten different diagnostic codes to assist in troubleshooting.
    • Separate Immersed Thermowell - High strength advanced polymer composite thermowell provides isolation between electric temperature sensor and surrounding water. No need to drain the tank when removing gas valve.
  • Compatible with Optional Accessory Packages - Performance Package, Protection Package and Inlet Shut-Off Valve.
  • Power Vented Water Heater - Designed for installations where atmospheric units cannot be used. Exhaust gases are vented under positive pressure directly out of the building through the roof or the wall.
  • Powerful Blower Motor - Our significantly quiet design has greater resistance to outside winds and the power to vent in many difficult venting situations.
  • Horizontal and Vertical Venting - With 3" or 4" PVC, ABS, or CPVC (Maximum equivalent vent length on reverse side).
  • Factory Installed Hydrojet® 2™ Total Performance System - Cold water inlet sediment reducing device helps prevent sediment build up in tank. Increases first hour delivery of hot water while minimizing temperature build up at top of tank.
  • Vitraglas® Lining - Bradford White tanks are lined with an exclusively engineered enamel formula that provides superior tank protection from the highly corrosive effects of hot water. This formula (Vitraglas®) is fused to the steel surface by firing at a temperature of over 1600 ºF (871 ºC).
  • 2" Non-CFC Foam Insulation - Covers the sides and top of tank, reducing the amount of heat loss. This results in less energy consumption, improved operation efficiencies and jacket rigidity.
  • Pedestal Base.
  • Water Connections - 3/4" NPT factory installed true dielectric fittings.
  • 3/4" NPT Side Connections.
  • Factory Installed Heat Traps - Design incorporates a flexible disk that reduces heat loss in piping and eliminates the potential for noise generation.
  • Protective Magnesium Anode Rod.
  • T & P Relief Valve - Installed.
  • Low Restriction Brass Drain Valve - Durable tamper proof design.
General Information N/A All gas water heaters are certified at 300 psi (2068 kPa) test pressure and 150 psi (1034 kPa) working pressure.

All water connections are 3/4" NPT (19 mm) on 11" (279 mm) centers. All gas connections are 1/2" (13 mm).

All models design certified by CSA® International (formerly AGA/CGA), ANSI Z-21.10.1 and/or 10.3 and peak performance rated.

Dimensions and specifications subject to change without notice in accordance with our policy of continuous product improvement.

Suitable for Water (Potable) Heating and Space Heating.

Toxic chemicals, such as those used for boiler treatment, shall NEVER be introduced into this system. This unit may NEVER be connected to any existing heating system or component(s) previously used with a non-potable water heating appliance.
Warranty N/A
  • 3-Year Limited Tank Warranty / 1-Year Limited Warranty on Component Parts.
 		N/A
  • 3-Year Limited Tank Warranty / 1-Year Limited Warranty on Component Parts.
 		N/A
  • 5-Year Limited Tank Warranty.
  • 1-Year Limited Warranty on Component Parts.
 		N/A
  • 5-Year Limited Tank Warranty.
  • 1-Year Limited Warranty on Component Parts.
 		N/A
  • 3-Year Limited Tank Warranty / 1-Year Limited Warranty on Component Parts.
Note N/A Meet or exceed ASHRAE 90.1b (Current standard) C.E.C. Listed 80% Thermal Efficiency.

Propane models feature a Titanium Stainless Steel propane burner.

110 V.A.C. Required for Power Venting/110 V.A.C. 60 HZ 3.1 Amperes.

NSF construction available.

Meets NAECA Requirements.
  • 1 First Hour Rating is based on the latest AHRI Directory listings.