PDF《Double Duty Atmospheric and》

How It Works The Double Duty, like our other popular residential water heaters, heats water for domestic use and stores it in a triple tested, glass-lined storage tank.

While in the tank, the domestic hot water transfers heat to the glass-coated heat exchanger that is immersed inside the tank. Within these tubes, water for space heating is circulated and heated. This internal heat transfer allows the Double Duty to serve two purposes. It provides hot water for domestic use while maintaining a comfortable space temperature through hydronic or radiant heating for a room addition or a apartment over a garage. Atmospheric and Power Vented Gas Water Heaters Standard Features ? 2" Non-CFC Foam Insulation - Improved formulation provides uniform tank coverage with a thick blanket of insulating foam. This non-CFC polyurethane closed cell foam minimizes standby losses and maximizes heat retention. ? Glass-Lined Steel Tank - The tank is automatically formed, rolled, and welded to ensure a continuous seam for the glass lining. The durable glass lining is fused to the interior of the tank at 1600°F to assure lasting protection against rust and corrosion while providing clean, clear hot water. ? Aluminum Tank Saver Anode - High capacity anode rod provides protection from the effects of electrolytic corrosion. ? Heat Traps - Factory installed, minimizes heat loss through piping. ? Dielectric Nipples - Factory installed waterways protect the tank from the corrosive action between dissimilar metals, while providing piping convenience. ? Double Wall Heat Exchanger - Double Wall 1-1/2" O.D. glass coated steel coil separates domestic water from heating fluid. A leak path between the two walls of tubing, terminating at a weep port on the top side of the top heat exchanger opening, provides a visual alert should a leak occur in either tube. ? Low Heat Exchanger Head Loss - With less than

4 ft. of head at

10 gpm flow through the coil, the required pump size for heat exchange can be greatly reduced. ? Brass Drain Valve ? Temperature & Pressure Relief Valve ?

6 Year Limited Warranty* (See warranty for details) ?

10 Year Extended Warranty Available (In residential applications) *

3 year limited warranty on tank and

1 year limited warranty on Parts when installed in commercial applications Additional Features for Power Vented Models: ? Vertical or Sidewall Venting ? Vents up to

60 equivalent feet with 3" PVC ? Vents up to

180 equivalent feet with 4" PVC Note: 90° elbows =

5 eq. ft. Domestic Water and Space Heating All In One Double Duty Use space heating Btu/hr requirement and supply water temperature to select appropriate Double Duty heater. XDN051G XPN075 Dimensions and Specifications Double Duty Pressure Drop Lochinvar Corporation ?

300 Maddox Simpson Pkwy ? Lebanon, TN

37090 ? 615-889-8900 / Fax: 615-547-1000 www.Lochinvar.com PDP-5M-4/11CPrinted in U.S.A. DD-09 (Replaces DD-08 5/10) HOT WATER OUTLET COLD WATER INLET HOT WATER OUTLET COLD WATER INLET B D A G F E Power Vented Top Model Gal. Btu/hr GPH @ Vent Shipping Number Cap. Input 90°F Rise AFUE A B D E F G Size Weight Atmospheric Models XDN051G

45 65,000

70 80.0 56-1/2" 22" 59-1/4" 50" 28" 13" 4"

238 XDL051G (LP)

45 61,000

66 80.0 56-1/2" 22" 59-1/4" 50" 28" 13" 4"

238 XDN075?

72 76,000

82 80.0 60-1/2" 26" 63-3/4" 53" 31" 16" 4"

328 XDL075 (LP)?

72 76,000

82 80.0 60-1/2" 26" 63-3/4" 53" 31" 16" 4"

328 Power Vented Models XPN051G

45 67,000

72 82.0 56-1/2" 22" 66" 50" 28" 11-3/4" 3"