Nortec GS Series - Manual (Page 18)

15 | GS Series Installation
UL Listed Cap
(by others)
Flashing,
4 in. (10 cm) min.
air space between
piping and combustible
materials
BH Vent
Maintain diameter of
exhaust outlet,
any combination of
vertical up / horizontal run,
max 100 ft (30 m),
slope 1/4 in./ft (2 cm/m).
2 ft (60 cm) min.
above any ridge
within 10 ft (3 m)
3 ft (90 cm)
min. above roof
Drain
(Note: Condensate
may require treatment,
consult local codes)
Support venting so
that weight is not
on exhaust outlet.
Condensate tee
(by others)
within 2 ft (60 cm)
of unit. 2 ft (30 cm)
min.
BH Vent Exhaust
Exhaust outlet
Install male to male
adapter (by others).
Terminate
Vertically
Horizontally
or
Horizontal exhaust
terminal must be
certified and can be
ordered from Nortec. If
BH venting used, orient
vertically, 6 in from wall.
Chose only one terminal
location (2 shown for
illustration only)
Figure 10: Vertical and Horizontal Venting Using BG Type With Sealed Combustion
Figure 9: Vertical and Horizontal Venting Using BH Type