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EFCO 8800 Series Assembly Instructions Vol.3 User Manual

Page 20

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EFCO 2009

Page 20

Series 8700 / 8800 Unitized Curtain Wall Installation Instructions - Volume 3

17H1 Stack
Head Assembly

22. Using an approved solvent or cleaner, clean the sealant contact surfaces of each end of the corner mullions and of the horizontals.
23. Seal the top of the corner mullion as shown in Figure 55 on page 21.
24. 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 55 on page

21 for more detail.

25. Seal the bottom of the corner mullion as shown in Figure 57 on page 21.
26. Attach the 17H0 stack sill assembly to the bottom of the corner mullion using (10) SFQ5 frame screws as shown below. See Figure 57 on page 21 for more

detail.

Figure 54

FM20 Unit

Lifting Lug

SFQ5 Frame

Screws

17H0 Stack Sill

Assembly

SFQ5 Frame

Screws

Corner Mullion

Top of

Mullion

Section 8 - B. Inside 90° Corner Unit Frame Assembly

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