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2. TYPICAL INSTALLATIONS (CONT’D)
2.3 MOUNTING CONSIDERATIONS
VJ0030
This unit can be used for a retrofit application. Connect the existing ducts to the
corresponding unit ports. If the previous stale air to outside duct and fresh air
from outside duct are 5’’ diameter, install the 5’’ diameter adapters (included)
over each of the corresponding unit ports. Also, if using the installation kit
no. 15273 or no. EA20130 (not available in the U.S.A.), install these 5’’ diameter
adapters. Use 4 screws (included) per adapter to attach them to the unit. See
figure below.
The joists opening needed to install the Tandem transition must be 9¾’’ (248 mm)
minimum. Also, the maximum heigh of the tandem transition is 8¾’’ (222 mm).
See Tandem transition end view below.
NOTE: The Tandem transition is included in the installation kit no. 15273 (not
available in U.S.A.).
VD0118A
8¾”
222 mm
9¾”
248 mm
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