EFCO 8800 Series Assembly Instructions Vol.3 - Manual (Page 11)

EFCO 2009 Page 11
Series 8700 / 8800 Unitized Curtain Wall Installation Instructions - Volume 3
17H1 Stack
Head Assembly
Section 7 - B. Outside 90° Corner Unit Frame Assembly
20. Using an approved solvent or cleaner, clean the sealant contact surfaces of each end of the corner mullions and of the horizontals.
21. Seal the top of the corner mullion as shown in Figure 24 on page 12.
22. Attach the 17H1 stack head assembly and lifting lug to the top of the corner mullion using (10) SFQ5 frame screws as shown below. See Figure 24 on page
12 for more detail.
23. Seal the bottom of the corner mullion as shown in Figure 26 on page 12.
24. Attach the 17H0 stack sill assembly to the bottom of the corner mullion using (10) SFQ5 frame screws as shown below. See Figure 26 on page 12 for more
detail.
Figure 23
FM21 Unit
Lifting Lug
SFQ5 Frame
Screws
17H0 Stack Sill
Assembly
SFQ5 Frame
Screws
Corner Mullion
Top of
Mullion