Bosch AQUA STAR 250SX LP - Manual (Page 14)

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14
Appliance details
Supporting the exhaust vent system and the use
of an external condensate trap
External condensate traps
B A condensate trap must be used in any sidewall
exhaust vent installations when the total vent length
is
≥ 5 ft (1.5 m) OR the vent pipe passes through an
unheated space (below 60F). See diagram below for
connecting a condensate tube.
B A condensate trap must be used for any vertical
exhaust installations. See diagram below for
connecting a condensate tube.
B When installing the condensate tubing at the exhaust
collar (see diagram below), be sure to form a trap by
means of a 3" (76.2 mm) loop filled with water. This
tube must be 3/8" ID high temperature silicone
for at least the first 6 inches (152 mm) and attached
with a gear clamp or hose clamp. The condensate
must be disposed of according to local regulations.
Fig. 17Horizontal side wall venting installation
(combustion air piping not being shown)
If the total horizontal exhaust vent length in a side wall
installation is greater than or equal to 5 feet (1.5m), a
condensate drain tube must be attached to the exhaust
collar.
Fig. 18 Above the roof clearance requirements from
rain cap (combustion air piping not being
shown)
Fig. 19 Vertical venting installation (combustion air
piping not being shown)
i
The venting materials and accessories
required to properly install the water
heater are available from CEC and their
distributors.
Condensate port on exhaust collar
Gear clamp
Condensate
tube/trap
Remove the screw from the
condensate tapping