13
DRISTEEM GTS HUMIDIFIER INSTALLATION AND OPERATION MANUAL
VERTICAL VENTING REQUIREMENTS
• Do not reduce the vent diameter.
• If turns are required in the vent piping, make
sweeping bends; avoid small-radius turns.
• Use the same size stack as the vent furnished with the
humidifi er.
• Maintain proper support of vent connections and
joints.
• Observe clearances (in accordance with applicable
codes) from all combustible materials and install an
approved cap for the stack outlet.
• The bottom of the cap must be one stack diameter
above the top of the stack.
• Extend chimney or vent at least 1 m above its passage
through a roof and at least 0.6 m above any ridge
within 3 m of the chimney (governing codes apply).
• The vent system must terminate above the roof surface
per the local and national directives and regulations
for the installation of gas-fi red equipment. DriSteem
recommends installing a high-wind vent cap on all
GTS humidifi ers.
• This
humidifi er may be commonly vented with other
listed Category I gas-fi red appliances. Total input rates
of all appliances determines the vent size.
Venting
HORIZONTAL VENTING REQUIREMENTS
• Contact your DriSteem distributor for all horizontal
venting parts.
• Ensure that distances from vent terminal to adjacent
public walkways, buildings, and openable windows
and building openings are consistent with local and
national directives and regulations for the installation
of gas-fi red equipment.
• In areas accessible to the public, vent terminal must
be at least 2.1 m above ground level to prevent burns
from hot terminal surface.
• The vent terminal and air intake locations must be
at suffi cient height above ground level to prevent
blocking by expected snowfall.
• Maintain minimum horizontal clearance of 1.2 m
from electric meters, gas meters, regulators, and relief
equipment.
• Building materials must be protected from degradation
by fl ue gases.
• Vent box pressure must be –2.5 Pa. Set by adjusting
power venter and barometric damper with all burners
running (see manufacturer's instructions included with
power venter and damper).
WARNING
Horizontal venting with a vertical termination:
For applications where the vent pipe terminates in
a vertical position, the horizontal length must not
exceed the height of the vent unless a power venter
is used. Failure to follow these instructions could
cause fl ue gases to exit the vent piping, causing
severe personal injury or death.