Oldcastle BuildingEnvelope Reliance-HTC - Manual (Page 6)

GENERAL INFORMATION
EXPANSION JOINTS
Expansion joints and perimeter joints shown in these instructions and in the shop drawings are shown at nominal
size. Actual dimensions may vary due to perimeter conditions and/or differences in metal temperature between
the time of fabrication and the time of installation. For example, a 12 foot unrestrained length of aluminum can
expand or contract 3/32˜ over a temperature change of 50º F. Any movement potential should be accounted for
at the time of the installation.
SUGGESTIONS FOR IMPROVING SYSTEM THERMAL PERFORMANCE
To maintain or improve your wall installation the following items should be considered.
A. Blinds or drapes prevent warm air from adequately flowing over the window surface.
B. Warm air ventilators too far from the window will not adequately wash the window with air to prevent
condensation.
C. In extreme conditions the fan of the heating system should not cycle on and off, but should run
continuously.
D. Some heating systems have a water injection feature that can raise humidity levels. The higher the
humidity levels the more likely condensation or frost will form. Raising the temperature and reducing
humidity will usually solve the problem.
E. On rare occasions an extremely cold storm may cause frost to appear on the glass framing. A space
heater and electric fan blowing along the plane of the window wall can reduce or eliminate this temporary
condition.
R E L I A N C E − H T C I N S T A L L A T I O N M A N U A L
MAY 2013 3
Phone: 1-866-OLDCASTLE (653-2278)
Web Address: www.oldcastlebe.com