EFCO 403 Series Roto Vent for Storefront User Manual
Page 2
and for longevity of the product.
Steel screen material is used to ensure a tight fit of the screen inside the vent tube
inserted inside the PVC tube to prevent insect penetration to the interior. Stainless
closed position, no PVC is visible from the interior. Screen cloth is rolled and
facilitates operation of the vent, and is finished to match the system. When in the
molded end cap with felt washers installed. A full length aluminum lift handle
of the rotating ventilator are sealed against air and water infiltration by an injection
are 5 1/2" x 1" and the number of slots vary with the length of the tube. The ends
The rotating ventilator is fabricated from 3 1/2" PVC tubing. The ventilating slots
PAGES 3 & 4
III
APPLICATION BY SYSTEM
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PAGE 12
PAGES 7 - 11
PAGES 5 & 6
V
VI
SIZING FORMULAS
PART PREPARATION & ATTACHMENT
PAGE 1
PAGE 2
SECTION
I
II
IV
VII TUBE REPLACEMENT
LOCATING & DRILLING TEMPLATE
exterior.
1. Bridging system thermal break with non-thermally broken metal flashing or lintels that are exposed to the
inclusive, the list of examples below illustrates conditions under which condensation is likely to occur:
Many current installation practices lead to an increase in the possibility of the formation of condensation. Though not all
EFCO representative for information on EFCO's Thermal Analysis Services.
professional is utilized to perform an analysis of the shop drawings to recommend the best installation methods. Please contact
temperature) are present. When the formation of excessive condensation is a concern, it is highly recommended that a design
Condensation will form on any surface when unfavorable conditions (interior temperature and relative humidity and exterior
NOTE: Please reference EFCO's "Understanding Condensation" brochure which can be obtained through your EFCO representative.
Minimizing Condensation
3. Interior relative humidity levels not maintained at recommended levels, see EFCO's "Understanding
2. System exposure to cold air cavities.
4. Inadequate separation between system and surrounding condition at perimeter.
Condensation" brochure.
involved.
5. Product combinations during the shop drawing stage that result in bridging thermal breaks of one or all products