Smith SERIES 28RTS/HE Installation & Operating Instructions Manual page 6

SERIES 28RTS/HE BOILER INSTALLATION AND OPERATION INSTRUCTIONS
Page 6
Figure 2- Vertical Venting
VENT CONNECTIONS
WARNING: Never modify or alter any part of the
boiler's smoke hood. This includes the removal
or alteration of any baffl es. Never install a vent
pipe of a diameter smaller than that of the boiler
smoke hood outlet. Failure to comply with this
warning can result in severe personal injury or
death.
Locate the boiler as close to the chimney as possible.
Use the shortest, straightest vent connector possible
for the installation. If horizontal runs exceed 5 ft., 1.5 m
they must be supported at 3 ft., 0.9 m intervals with
overhead hangers. Use a single wall stainless or single
wall galvanized steel vent pipe the same diameter as
the flue collar to connect the boiler to a masonry
chimney. When using an approved metal chimney
system use the appropriate vent connector. The vent
connector should be sloped up toward the chimney at a
minimum rate of 1/4 in/ft, 2 cm/m. On masonry chimneys
the connector must terminate fl ush with the inside of the
chimney fl ue. Fasten each single wall vent connection
with at least 3 corrosion resistant sheet metal screws.
The vent materials used in positive pressure
vent systems must be certified to UL 1738 for
installations in the United States, ULS636 for
installations in Canada. The following manufactures
have systems that meet these requirements:
Heat-Fab, Inc.
38 Hayward Street
Greenfi eld, MA 01301, (800) 772-0739.
Z-Flex U.S., Inc.
20 Commerce Park
North, Bedford, NH 03110-6911, (800) 654-5600.
Protech Systems Inc.
26 Gansevoort Street
Albany, NY 12202 (518) 463-7284
WARNING: Breeching under positive pressure
must be certifi ed to UL 1738 for installations
in the United States, ULS636 for installations
in Canada. Type B1 vent SHALL NOT be used.
Failure to comply with this warning can result
in severe personal injury or death.