Chimney Requirements; Minimum Clearance; Draft Hood; Vent Piping - Slant/Fin SE-70 Installation And Operating Instructions Manual

4
WARNING
LIQUEFIED PETROLEUM (L.P.) PROPANE
GAS-FIRED BOILER LOCATION
REQUIRES SPECIAL ATTENTION
Liquefied Petroleum (L.P.) propane gas is heavier than air.
Therefore, propane boilers, piping, valves should NOT be
installed in locations where propane leaking from defective
equipment and piping will "pool" in a basement or other
space below the leak.
A spark or flame from the boiler or other source may ignite
the accumulated propane gas causing an explosion or fire.
Provide a level, solid foundation for the boiler. Location
should be as near the chimney as possible so that the flue
pipe from boiler to chimney is short and direct.
The UNIFORM MECHANICAL CODE may be in effect in
your geographic area
The following precautions are cited by the 1994 UNIFORM
MECHANICAL CODE, section 304.6:
"LPG Appliances. Liquefied petroleum gas-burning
appliances shall not be installed in a pit, basement or
similar location where heavier-than-air-gas might collect.
Appliances so fueled shall not be installed in an above-
grade under-floor space or basement unless such loca-
tion is provided with an approved means for removal of
unburned gas."
Consult Chapter 5 of the 1994 UNIFORM MECHANICAL
CODE for design criteria of the "approved" means for
removal of unburned gas.

CHIMNEY REQUIREMENTS

A. Sentinel boilers may be vented into a masonry vitreous tile-
lined chimney or type "B" venting system NOT EXPOSED
to the OUTDOORS below the roof line.
Venting and sizing of venting system must be in accor-
dance with Part 7, Part 10 and Appendix G of the National
Fuel Gas Code ANSI Z223.1, NFPA 54, -latest edition
which will be referred to as the National Fuel Gas Code.
Local codes apply.
If a masonry chimney is exposed to the outdoors on one or
more sides below the roof line (exterior chimney), ONE of
the following options apply:
1. Chimney must be re-lined with a metallic liner. When
this is done, the chimney will be considered NOT
exposed to the outdoors and the requirements of the
National Fuel Gas Code for NON-exposed chimneys
and/or local codes will apply.
2. If an exposed tile-lined chimney is to be used WITH-
OUT a metallic liner, the boiler must first meet the
requirements of the following tables and paragraphs of
the National Fuel Gas Code:
I. For Single Sentinel Boiler - Paragraph 10.1.9 and
table 10.11.
II. For multiple appliances - Paragraph 10.2.18 and table
10.12 (or 10.13 if applicable).
In addition, all requirements of Part 7, Part 10 and
Appendix G of the National Fuel Gas Code and/or local
codes apply.
B. If an existing boiler is removed from a common venting
system, the common venting system may be too large
for proper venting of the remaining appliances connected
to the common vent. Follow the test procedure shown in
Appendix "A" on page 19 of this manual to insure proper
operation of venting system and appliances.
C. Inspect for proper and tight construction. Any restrictions
or obstructions must be removed. An existing chimney may
require cleaning.
D. Chimney or vent must extend at least 3 feet above any
ridge within 10 feet of the chimney.
MINIMUM CLEARANCES FOR COMBUSTIBLE
CONSTRUCTIONS
SENTINEL SERIES
MINIMUM CLEARANCES FOR COMBUSTIBLE CON-
STRUCTION. MINIMUM ALCOVE AND CLOSET CLEAR-
ANCE.
Front
Rear
Left Side
Right Side
Top (above boiler)
Flue Connector
A. Minimum boiler clearances shall be as follows:
B. Provide accessibility clearance of 24" on sides requiring
servicing and 18" on sides used for passage.
C. All minimum clearances shown above must be met. This
may result in increased values of some minimum clear-
ances in order to maintain the minimum clearances of oth-
ers.
D. Clearance from hot water pipes shall be 1 inch**.
** At points where hot water pipes emerge from a floor, wall or ceiling, the
clearance at the opening through the finished floor, wall or ceiling boards
may not be less than 1/2 inch. Each such opening shall be covered with
a plate of non-combustible material.
SAFETY
KEEP THE BOILER AREA CLEAR AND FREE FROM
COMBUSTIBLE MATERIALS, GASOLINE AND OTHER
FLAMMABLE VAPORS AND LIQUIDS.

DRAFT HOOD

The draft hood supplied with SE models is part of the listed
boiler assembly. DO NOT alter the hood. See dimensions,
page 2.
Attach the hood to the boiler flue outlet. Connect flue pipe full
size of hood outlet. Vent damper must be installed on the out-
let side of the hood. See Vent Piping, below.

VENT PIPING

A. Vent piping installation must be in accordance with ANSI
Z223.1-latest edition, National Fuel Gas Code, Part 7,
Venting of Equipment. Other local codes may also apply
and must be followed.
B. Boiler vent pipe must be the full diameter of the boiler
outlet. See dimensions, page 2.
C. If more than one appliance vents into a common breeching,
the area of the breeching must be equal to the area of the
largest vent plus 50% of the area of the additional vent areas.
Vent connectors serving appliances vented by natural draft
shall not be connected into any portion of mechanical draft
systems operating under positive pressure. Horizontal
breeching or vent pipe should be as high as possible, consis-
tent with codes, so that vertical vents from appliances will
have a high rise above draft diverter openings. All horizontal
runs must slope upwards not less than 1/4 inch per foot of
run. Horizontal portions of the venting system must be
Sentinel
6"
6"
6"
12"
28"
6"