Hoffman    Anoka, MN 55303 1778
Apr 14, 2009 Compatible with 48 Vdc and 115 Vac power supplies, CLIMAGUARD outdoor heat exchangers are double-crimped and dip-sealed to prevent harsh environmental elements from entering enclosure. With support for both surface- or recess-mounting, lab- and field-tested units are UL Type 12/3R/4 rated and Telcordia GR-487 capable. Maximum 2,000 W of heater option is available on dc and ac volt heaters, and variable-speed blowers come standard on dc-powered units for noise free operation.

Haewa Corp.    Duluth, GA 30097
Oct 31, 2002 Model WW4000S water-to-air heat exchanger, housed in 19.69 x 31.50 x 7.09 in. enclosure, is suited for operation in extremely polluted and high temperature environments. Its design employs internal thermostat and 2 fans that produce 648 cfm air flow. Cooling water flow of 3.5 gpm at 50°F produces 5000 W of cooling capacity when temperature difference between water inlet and ambient is 25°K. Foamed-in-place seals provide Nema 12/IP 55 protection.

APW-Thermal Management/McLean    Champlin, MN 55316
Jan 02, 2002 ProAir heat exchangers can significantly reduce heat rise in sealed, uninsulated enclosures and extend life of enclosed electronics. Model XR20 will limit heat rise to 24°F above ambient and XR29 will keep temperature within 15°F above ambient. Both are available in 115 or 230 V and 50/60 Hz configurations and can be mounted to any internal or external surface of enclosure. Heat exchangers are UL /cUL, CE, UL50 type 12 and UL3R approved.