Fantech VHR 704 Installation Manual

Also see for VHR 704: Operation manual Operation manual Operation manual Installation manual

Contents

Fantech VHR 704 Installation Manual Manual pdf 9 page image

9Exterior ducting installationWeatherhood location• Decide where your intake and exhaust hoods will be located.Locating the Intake Weatherhood• Should be located upstream (if there are prevailing winds) from theexhaust outlet.• At a minimum of 2m (6’) away from dryer vents and furnace exhaust(medium or high efficiency furnaces), driveways, oil fill pipes, gas meters,or garbage containers.• At a minimum height of 460mm (18’’) above the ground, or above the levelof expected snow accumulation.• At a minimum distance of 1m (3’) from the corner of the building.• Do not locate in the garage, attic, crawl space, or underneath deck.Locating the Exhaust Weatherhood• At least 460mm (18") above ground or above the depth of expected snow accumulation• At least 1m (3’) away from the corner of the building• Not near a gas meter, electric meter or a walkway where fog or ice could create a hazard• Do not locate in a garage, workshop or other unheated spaceInstalling the ducting to the weatherhoodsA well designed and installed ducting system will allow the HRV to operate at its maximumefficiency. The inner liner of the flexible insulated duct must be secured to the sleeve of theweatherhood (as close to the outside as possible) and to the appropriate duct connection on theHRV. The insulation should remain full and not crushed. The outer liner, which acts as a vaporbarrier, must be completely sealed to the outer wall and the HRV using tape and/or caulking. Agood bead of high quality caulking (preferably acoustical sealant) will seal the inner flexible duct toboth the HRV duct connection and the weatherhood prior to securing them.To minimize airflow restriction, the flexible insulated duct that connects the two outsideweatherhoods to the HRV should be stretched tightly and be as short as possible.Twisting or folding the duct will severely restrict airflow.See “Installation Diagram Examples” for installation examples.1 Using the duct connection ofthe outside hood, outline theintake & exhaust holes to becut. The holes should be slightlylarger than the duct connectionto allow for the thickness of theinsulated flexible duct. Cut ahole for both the intake andexhaust hoods.3 Push the hood into the openingand then attach the hood to theoutside wall with mountingscrews.Repeat the installationprocedure for both the supplyand exhaust hoods.2 Pull the insulated flexible ductthrough the opening until it iswell extended and straight.Slide the duct’s inner vinyl sleeveover the hood duct connectionand secure. Pull the insulationover the duct and pull the vaporbarrier over the sleeve. Securewith appropriate tape orsealant.4 Using a caulking gun, sealaround both hoods to preventany leaks.Steps for hood installation:36" (1m)min.INTAKEOUTSIDE CORNER INSIDE CORNEREXHAUST18" (460mm) min. 18" (460mm) min.6' (2m)min.36” (1m)min.Model DescriptionRC4 4" Roof capUEV4 4" Soffit ventHS4W 4" Louvered shutter* Application for Supply or Exhaust