EFCO Special Purpose Windows Installation - Manual (Page 33)

EFCO CORPORATION 3/5/2014 PART NO. YW40 Page 1 of 1
Window Installation Instructions - Pivot Window Installation Section -
General Installation Instructions for Pivot Windows
1. Install the frame plumb, level, and true.
Maintain a consistent frame to vent gap for
both height and width. The sash may be
removed while installing the frame, at the
installer’s discretion. However, the weight of
the sash must not rest on the weather-strip
and the sash must be returned to the frame
from which it was removed.
2. All pivot windows are to be blocked and
anchored as detailed on the project shop
drawings in order to prevent the jambs from
bowing or twisting. The window dimension at
midpoint shall be within 1/16” of the window
dimension at the head and/or sill.
Note:
Vertically pivoted units must be solidly blocked
at the sill pivot point to support the entire
weight of the sash.
Horizontal pivoted units must be solidly
blocked at the extreme sill to jamb intersection
to support the dead load weight of the sash
being transferred to the jambs.
3. Jack screws in the frame of the pivots are to
be adjusted to provide a consistent gap
between the sash and frame for proper sweep
seal operation. (Jack screws do not replace
blocking.)
Completely read the General Installation Instructions and all other sections which pertain to
your project before starting work. These recommendations are for general erection
procedures only. For actual job conditions, see the details on the shop drawings. For
perimeter anchor types and spacing, refer to the approved shop drawings or consult the
project design professional.
Frame to vent gap
Tighten the jack screw to
adjust bowing at jambs.
Horizontal Pivot
Housing
Vertical Pivot
Housing