valutazioni - 2, GPA: 3.5 ( )

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Also, if you plan to stop the unit for more than 12 hours, we recommend to cover the duct with R12 insulation. 4.5.2 CENTRAL DRAW POINT (AS ILLUSTRATED IN SECTIONS 2.1.2 AND 2.3.2) Stale air ductwork Same as for Stand Alone System, described in point 4.5.1. Fresh/Filtered air ductwork (Return side connection) • Trace a 10 1/4’’ x 6 7/8’’ (260 mm x175mm) opening on the forced air unit return duct at a minimum linear distance of 9’ 10” (3 m) upstream (from forced air unit drop: A+B+C). NOTE: For Hepa 1000 and HF 1.0 units only, the minimum linear distance is 2’ (0.61 m) upstream (A+B+C). • Using a metal shear or a hammer and a flat blade screwdriver, punch a hole into the furnace/air handler return duct. Then, using metal shear, cut out the rectangular hole. 1 2 WARNING When performing duct connections, always use approved tools and materials. Respect all corresponding laws and/or safety regulations. Please refer to your local building code. 0 ! 4. INSTALL THE UNIT (CONT’D) VD0114 A B C minimum 9’10” (3 m) upstream - 21 - 4.5 INSTALLING 8’’ DUCTS AND REGISTERS (CONT’D) 4.5.2 CENTRAL DRAW POINT (AS ILLUSTRATED IN SECTIONS 2.1.2 AND 2.3.2) (CONT’D) Filtered air ductwork (Return side connection) (cont’d) • Fix the duct connector to the forced air unit duct using its 4 retaining screws (#8 x 3/4” long). Seal with duct tape. • Take one end of the 8’’ flexible duct and slide it over the duct connector. Secure with a tie wrap. Carefully seal the connection with duct tape. Identifiy the duct using the blue sticker dot included. • Attach this duct to the FRESH AIR TO BUILDING port (see icon on the top of the unit), using tie wrap and duct tape. 4.5.3 RETURN-TO-RETURN (AS ILLUSTRATED IN SECTIONS 2.1.3 AND 2.3.3) Fresh/Filtered air ductwork (Return side connection) Same as for Central Draw Point, described in point 4.5.2. Stale air ductwork (Return side connection) • Locate the stale air ductwork opening at least 3’ (0.9 m) from the fresh/filtered air ductwork connection. Proceed as for the fresh/filtered air ductwork, but instead of using the blue dot sticker to identify the duct, use the red dot. • Attach this duct to the EXHAUST AIR FROM BUILDING port (see icon on the top of the unit), using tie wrap and duct tape. 4. INSTALL THE UNIT (CONT’D) WARNING When performing duct connections, always use approved tools and materials. Respect all corresponding laws and/or safety regulations. Please refer to your local building code. 0 ! 3’ (0.9 m) minimum - 22 - 4. INSTALL THE UNIT (CONT’D) 4.6 INSTALLING INSULATED FLEXIBLE DUCTS (HEPA 2000, HF2.0, HEPA 3000, HF 3.0 AND HEPA 4000 UNITS ONLY) CAUTION Make sure the vapor barrier on the insulated ducts does not tear during installation. Use the following procedure for connecting the insulated flexible ducts to the Tandem® transition* (EXHAUST AIR TO OUTSIDE and FRESH AIR FROM OUTSIDE). NOTE: If the joist are perpendicular to the ducts, or if the connection to the exterior hood is in a limited area, your installation will need two exterior hoods instead of one. In this case, do not use the Tandem® transition. Identify each insulated duct. For fresh air from outside duct, use the blue sticker dots (one dot at each end). For exhaust air to outside duct, use the red sticker dots (one dot at each end). Then, go to point 4.6.2 and refer to the optional single hood enclosed instructions. *Patent pending. 4.6.1 CONNECTION TO TANDEM® TRANSITION 1. For each duct, pull back the insulation to expose the interior flexible duct. 2. Connect the interior flexible duct to the smaller part of the Tandem® transition (5’’ oval) using a 24’’ tie wrap. NOTE: If you are using a 6’’ diameter insulated duct, use the bigger part of the Tandem® transition (6’’ oval). 3. Pull the insulation over the joint. Pull the vapor barrier over the insulation. 4. Apply duct tape gently to the joint in order to make an airtight seal. See figures below. VJ0025 VJ0022 VJ0023 VJ0024 1 2 3 4 EXHAUST AIR TO OUTSIDE DUCT ON TOP Identify each insulated duct. For fresh air from outside duct, use the blue sticker dots (one dot at each end). For exhaust air to outside duct, use the red sticker dots (one dot at each end). Be careful to identify the exhaust air to outside duct (red dot) at the upper section of the transition. - 23 - 24 - 4.6 INSTALLING INSULATED FLEXIBLE DUCTS (HEPA 2000, HF 2.0, HEPA 3000, HF 3.0 AND HEPA 4000 UNITS ONLY) (CONT’D) 4.6.2 CONNECTION TO THE 5’’ TO 6’’ OVAL PORTS OF THE UNIT Use the following procedure for connecting the insulated flexible ducts to the 5’’ to 6’’ oval ports of the unit (EXHAUST AIR TO OUTSIDE and FRESH AIR FROM OUTSIDE). 1. Pull back the insulation to expose the flexible duct. 2. Connect the interior flexible duct to the smaller part of the port (5’’ oval) using a 24’’ tie wrap. NOTE: If you are using a 6’’ diameter insulated duct, use the bigger part of the port (6’’ oval). 3. Pull the insulation over the joint and tuck it between the inner and outer rings of the port. Pull the vapo...

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