Bradford White DS1-50S6FSX - Manual (Page 8)

8
Optional Vent-Air Intake System Installations continued-
Installation of Vertical Extensions
1. If applicable, cut a 5-1/2 inch (13.6 cm) diameter minimum clearance hole
in the ceiling where the telescopic vent-air intake tube(s) will pass
through. (See Figure 3).
Figure 3
2. Use one of the following formulas below to calculate the required
length of the three (3) inch (7.6 cm) diameter telescopic tube(s). (See
Figure 4).
IMPORTANT
If your installation does not require optional vertical extension(s), then
continue in this manual to the section titled “Installation of Horizontal
Extensions” and follow the instructions.
50 Gallon Models
(189.3 Liter Models)
V = Y - (71-¼ inches)
V = Y - (183.5 cm)
40 Gallon Models
(151.4 Liter Models)
V = Y - (62-¼ inches)
V = Y - (160.6 cm)