User manual TJERNLUND V1, V1D, V2D CRAWL SPACE VENTILATORS 8500720

[. . . ] UnderAire Crawl Space Ventilators TM TJERNLUND Fan powered crawl space ventilation quickly reduces moisture helping to protect both home and occupants. Suitable for Damp Locations s Ventilates excess moisture, the cause of mold, mildew and wood rot. [. . . ] Includes thermostat, dehumidistat and pre-wired 6' power cord. Model V2D Two fans and large faceplate sized for ventilation openings through block foundations. Includes thermostat, dehumidistat and pre-wired 6' power cord. UnderAire Crawl Space Ventilators TM Facts to know about Crawl Space Ventilation From Mississippi State University Extension Service: s If soil is damp, as much as 20 gallons of water per 24 hours can evaporate into the air in a 1, 400 sq. s Primary causes of excess moisture include: q Surface runoff water q Poor ventilation q No or poor ground vapor barrier s Signs of excess moisture in crawl space: q Soil is wet q Surface organism growth on floor joists q Wet insulation q Musty odors in crawl space or living areas q Excessive moisture in living areas tending to migrate towards windows Designed and engineered for years of service Galvanized face plate may be trimmed if necessary Models V1D and V2D include adjustable dehumidistat Thermostat deactivates fan below 400F to avoid freeze-ups Models V1D and V2D have 6' grounded power cord Sealed bearing motor(s) Easy to install Ventilators are installed inside crawl space behind existing ventilation opening. Screws and masonry wall anchors are included. Models V1D & V2D Model V1 Specifications Model Performance Motor Dehumidistat Other Tjernlund ventilation products V1 V1D 110 CFM 115/1/60 0. 30 amp OFF/ON or 20-80% RH Opens at 400F 18" x 9" x 2" V2D 220 CFM 2 @ 115/1/60 0. 60 amps OFF/ON or 20-80% RH Opens at 400F 18" x 9" x 2" 110 CFM 115/1/60 0. 30 amps Optional Model DH10 dehumidistat available separately In-ForcerTM fresh air and combustion air intake fans automatically bring outdoor air into tightly sealed homes. Thermostat Dimensions Opens at 400F 14 3/8" x 6 7/8" x 2" Duct Booster® How to determine the number of UnderAireTM Ventilators needed: Calculate the cubic area of the crawl space by multiplying the length x width x height. Divide this number by 15 to determine the minimum CFM necessary to fully ventilate the space in 15 minutes. Example: 20' wide x 40' long x 3' high crawl space = 2, 400 cubic ft. [. . . ] Capacities from 150 to 1, 200 CFM. Complete details on Tjernlund Crawl Space Ventilators are available from your Tjernlund distributor or at www. tjernlund. com TJERNLUND PRODUCTS, INC. 1601 Ninth Street White Bear Lake, MN 55110-6794 Phone: 651. 426. 2993 800. 255. 4208 Fax: 651. 426. 9547 Visit our web site: www. tjernlund. com Copyright © 2006 Tjernlund Products, Inc. [. . . ]