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COMMERCIAL GAS MODELS<br />
LIGHT DUTY TTW ®<br />
Light Duty TTW ® (Through-the-Wall) units are perfect for applications<br />
where installation flexibility is as important as meeting hot water<br />
demands. Power vented for positive exhaust, these units can be vented<br />
horizontally and vertically up <strong>to</strong> 180 feet. These extremely long vent<br />
lengths solve difficult ventilation challenges. Light Duty TTW ® models are<br />
also available in Ultra Low NOx versions.<br />
APPLICATIONS:<br />
Small commercial kitchens and strip malls<br />
FEATURES:<br />
full descriptions are available in glossary beginning on page 33<br />
• ICON System Control<br />
• ICON System Accessory Package<br />
Compatible<br />
• OnGuard RMT System Compatible–<br />
Accessory Module Required<br />
• Defender Safety System ® (50 and 65-<br />
gallon models only)<br />
• Electronic Ignition<br />
• Powerful and Quiet Blower Mo<strong>to</strong>r<br />
• Horizontal and Vertical Venting<br />
• Hydrojet ® 2 Total Performance System<br />
(TW4-75S has Hydrojet ® Total<br />
Performance System)<br />
• Vitraglas ® Lining<br />
• ¾” NPT Dielectric Waterway Fittings<br />
• Fac<strong>to</strong>ry Installed Heat Traps<br />
• Max Temp - 180˚F<br />
• NSF Construction Available<br />
• Side Connections<br />
• Protective Magnesium Anode Rod<br />
• Low Restriction Brass Drain Valve<br />
• T&P Relief Valve Installed<br />
• 2" Non-CFC Foam Insulation<br />
• 3–Year Limited Tank Warranty– can be<br />
upgraded <strong>to</strong> 5–Year at additional cost<br />
Model<br />
Number<br />
TW4-50S-67FB-3N<br />
TW4-65S-70FB-3N<br />
TW4-75S-76B-3N<br />
Capacity Input Recovery at<br />
100°F Rise*<br />
Nat. LP<br />
Nat. LP U.S. U.S.<br />
BTU/Hr. BTU/Hr. GPH GPH<br />
U.S.<br />
Gal.<br />
48<br />
65<br />
75<br />
67,000<br />
70,000<br />
76,000<br />
60,000<br />
63,000<br />
75,500<br />
65<br />
68<br />
74<br />
58<br />
61<br />
73<br />
Floor <strong>to</strong><br />
Vent<br />
Conn.<br />
in.<br />
65 7 /8<br />
69<br />
68 3 /8<br />
Jacket<br />
Dia.<br />
in.<br />
22<br />
24<br />
26<br />
Vent<br />
Size<br />
Min.<br />
in.<br />
3<br />
3<br />
3<br />
Approx.<br />
Shipping<br />
Weight<br />
lbs.<br />
188<br />
222<br />
257<br />
These models are not recommended for sanitation purposes.<br />
For Propane (LP) models change suffix "B" <strong>to</strong> "S" and "N" <strong>to</strong> "X” (Example: TW4-50S-67FS-3X)<br />
*Based on manufacturers rated recovery efficiency.<br />
8<br />
Venting Dimensions<br />
TW4-50S-67<br />
TW4-65S-70<br />
TW4-75S-76<br />
Max. Equivalent Length<br />
Min. Equivalent Length<br />
Number 1<br />
of 2<br />
90° Elbows 3<br />
3"<br />
Vent Pipe<br />
†60 ft.**<br />
7 ft.<br />
55 ft.<br />
50 ft.<br />
45 ft.<br />
4"<br />
Vent Pipe<br />
†180 ft.<br />
15 ft.<br />
175 ft.<br />
170 ft.<br />
165 ft.<br />
Subtract 5ft. for each additional 90° elbow<br />
†For high altitude installations, consult the installation instructions.<br />
**TW4-75S Max. 3" vent length is 50ft.<br />
QUESTIONS SPEAK WITH OUR EXPERTS AT 800.523.2931
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