Installation guide

Page 32 • DRI-STEEM GTS Humidifier Installation, Operation, and Maintenance Manual
Vertical and horizontal venting guidelines (stack connection)
• The GTS is a Fan Assisted Category I (natural draft) Appliance.
Installations where the vent terminates in a side wall of the
building, or where the overall horizontal run exceeds the overall
vertical run require a power venter. See Page 34.
• Maximum flue temperature is 400 °F (205 °C) + ambient.
• Flue draft negative pressure greater than 0.2" wc (50 Pa) may cause
unacceptable post ignition.
• Vent piping must be UL or UL/CSA listed type B, B-W, or any
other vent type approved for a Category I appliance.
– Type B: Double wall construction, inner wall aluminum, outer
wall galvanized steel
– Type B-W: Same as type B except fabrication in oval shapes only
Do not use more than one type of venting per application Required
clearance for Type B and B-W vent piping is 1" (25 mm).
• Do not use vent equipment from more than one manufacturer.
• When connecting the humidifier to a gas vent or chimney,
installation must be in accordance with Part 7, Venting of
Equipment, of the National Fuel Gas Code, ANSI Z223.1; or
Section 7, Venting Systems and Air Supply Appliances, of the
CAN/CGA B149 Installation Codes; or National Gas Safety Code
(Installation & Use) Regulations (latest revision); governing codes,
and the vent manufacturer’s instructions.
• When applying the codes, reference also the venting
manufacturer's instructions, the service gas supplier's regulations,
and the specific instructions provided in this manual.
CAUTION! Install a drip tee or flue box condensate drain for start-
up flue condensate removal. Failure to follow these instructions could
cause water to accumulate in the flue box.
• The purpose of venting the gas humidifier is to completely remove
all products of combustion and ventilation gases to the outside air.
• For vertical vent pipe terminations only: Do not reduce the vent
diameter and avoid short turns in the vent piping. Use the same
size stack as the vent furnished with the humidifier. Maintain a
minimum upward slope of ¼" per linear foot (2%) on all horizontal
runs. 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.
• Inspect for proper and tight construction. Remove any restrictions
or obstructions. An existing chimney may require cleaning.
• For vertical vent pipe terminations only: Extend chimney or vent at
least 3' (1 m) above its passage through a roof and at least 2' (0.6 m)
above any ridge within 10' (3 m) of the chimney (governing codes
apply).
• Do not connect this humidifier to a chimney flue servicing a
separate appliance designed to burn solid fuel.
Vertical and horizontal venting
More instructions on the next page ▶
WARNING!
The humidifier must be installed by
a qualified technician and meet the
requirements of all governing codes. Failure
to follow these instructions could cause
severe bodily injury or death.
Note:
For European models, contact your
distributor for horizontal venting parts.
Installation