Venting System Inspection & Installation - UTICA BOILERS Starfire 3 Installation Manual And Operating Instructions

VENTING SYSTEM INSPECTION & INST VENTING SY VENTING SY
VENTING SY VENTING SY
WARNING: WARNING: WARNING: WARNING: WARNING:
NOT BE CONNECTED INTO ANY PORTION OF A MECHANICAL DRAFT SYSTEM
OPERATING UNDER A POSITIVE PRESSURE.
INSPECT CHIMNEY to make certain it is constructed according to the latest revision of
the NFPA211. Local codes may differ from this code and should be checked. Where there
is a conflict, the local code will prevail. In Canada refer to the National Building Code or
CSA-A405 as applicable.
This boiler must be installed into a chimney which has a masonry or metallic chimney
liner.
An unlined chimney will have leaks that will cause poor chimney performance (NO
DRAFT), and could result in poor positive pressure in the combustion chamber.
Horizontal portions of the venting system should not exceed 10 feet in length. Horizontal
lengths over 10 feet will have a negative effect on the chimney performance.
The chimney should extend at least 2 feet above any portion of the building within 10
feet. See figure 14 below. It should produce a negative draft of .06 to .08 inches of water
column, (W.C.), as measured with a draft gauge between the boiler and barometric draft
control while maintaining an .02 inch W.C. negative draft in the combustion chamber. See
chart below for recommended chimney or vent sizes.
Inadequate draft will cause improper combustion, resulting in dirty flue ways and high fuel
bills.
CONNECT FLUE PIPE same size as boiler outlet to chimney, sloping upward
continuously toward the chimney approximately 1/4" per foot. Bolt or screw joints together
to avoid sag.
If an oil fired water heater is vented into the same flue as the boiler, provide a separate
hole into the chimney whenever possible. When this isn't possible, use a "Y" connection in
the flue pipe, using a separate draft regulator for each unit. When a chimney will not provide
adequate draft to handle the input from the water heater and boiler simultaneously, wire the
units so that only one will operate at a time, favoring the water heater.
FIGURE 14
STEM INSPECTION & INST STEM INSPECTION & INSTALLA STEM INSPECTION & INST
STEM INSPECTION & INST
BOILER IS TO BE VENTED BY NATURAL DRAFT AND SHALL
PAGE 12
CHIMNEY OR VENT SIZES
ROUND
MODEL NO. INCHES
MIN MAX MIN MAX MIN MAX
SFH365,3100
6 8
4100
SFH4125,3125
7 8
4150, 5125
SFH5175,5200 8 10
SFH6150,6225 8 10
SFH7275 8 10
ALLATION ALLA ALLA TION TION TION
ALLA TION
SQUARE HEIGHT
INCHES FEET
8X8 8X8 15 40
8X8 8X10 15 40
8X8 8X12 15 50
8x8 8x12 15 50
8x8 8x12 15 50