Issue 7-23-2007
Besam ICU/CCU - Equal or Unequal Panel
16
© Copyright 2007 Besam Entrance Solutions. May not be reprinted or reproduced without permission.
Mechanical Installation
Checking – Marking out – Fastening
Besam jambs are factory prepared for header installa-
tion. Mount jambs to header using five screws per jamb.
See Fig. 2.
• Drill holes at the top, middle and bottom of
the jambs for securing to the door opening, adjusting
for site conditions that may require the holes to be at a
certain height.
• Drill 1/2" holes through the face of the jamb
and then drill the back holes to a maximum of 1/4".
Suggested methods for attaching the jambs in which the
screw holes are not exposed are as follows:
1. Install “U” shaped clips to the floor in which the
jambs will slide over the top. Drill a hole through
the jamb and clip to attach the bottom of the door.
Drill a hole through the jamb inside of the header
to attach the top of the jamb.
2. Countersink the holes on the exterior jamb walls
in line with the sidelite such that the sidelite
covers the holes when installed.
3. Drill holes through both the interior and exterior
jamb wall and install beauty caps on the exterior
holes.
Leveling header and jambs
Note! The header and jambs must be square and level to ensure a proper installation!
1. Inspect the rough door opening, measuring from side to side and using a level, to find areas where
shims may be needed. Look for high spots in the floor (see Fig. 1 page 15); if there is a slight rise
in the floor at any point then the bottom of the jambs should be set level with the highest point of
the floor, with the header leveled across the opening.
2. Tilt header/jamb assembly up into rough opening in wall.
3. Start with one jamb. Loosely install the middle fastener, using a level on the outside of the frame
to plumb the jamb. Confirm that the header is level across the opening. Repeat for the opposing
jamb, loosely installing first the middle fastener, then the top and bottom. Return to the first jamb
and install the remaining top and bottom fasteners loosely.
4. Starting with the top screws on both jambs, equally shim behind both jambs, leaving equal gaps and
centering the package in the door opening. Tighten the top fasteners. Use your level on the inside of
one jamb to determine shim requirements for the middle fastener, then shim and tighten. Repeat for
the bottom fastener. Shim and tighten the middle and bottom fasteners on the other jamb in the same
way. Check for jamb bowing with a straightedge and correct if present.
5. Recheck the jambs, using a level on the outside and inside of each jamb, and the header. If the
header and jambs are truly square, the top jamb to jamb and bottom jamb to jamb measurement
should be identical. If necessary, strings can be taped from corner to corner on the outside of the
jambs. The strings should cross in the center of the door opening, slightly touching each other. If
there is a gap between the strings or the strings are pushing against each other, than the package is
twisted and needs adjustment before proceeding.
Fig. 2
