Operating instructions

B. Provide accessibility clearance of 510 mm (24”) on sides
requiring servicing and 457 mm (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
others.
D. Clearance from hot water pipes shall be 25 mm (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 13 mm (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 the
requirements of the local gas utility, local building codes
and other authorities having jurisdiction.
B. Boiler vent pipe must be the full diameter of the boiler out-
let. See dimensions, page 2.
C. If more than one appliance vents into a common breech-
ing, 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 natur-
al draft shall not be connected into any portion of mechani-
cal draft systems operating under positive pressure.
Horizontal breeching or vent pipe should be as high as
possible, consistent with codes, so that vertical vents from
appliances will have a high rise above draft diverter open-
ings. All horizontal runs must slope upwards not less than
20 mm/m (1/4 inch per foot) of run. Horizontal portions of
the venting system must be supported to prevent sagging
by securing each joint with metal screws and by providing
hanger spaced no greater than 1524 mm (5 feet apart).
4
Sentinel
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 the requirements of the local gas utility, local
building codes and other authorities having jurisdiction.
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 an approved metallic
liner. When this is done, the chimney will be considered
NOT exposed to the outdoors and the requirements for
NON-exposed chimneys and/or local codes will apply.
2. If an exposed tile-lined chimney is to be used WITHOUT
a metallic liner, the boiler must first meet the require-
ments of the following tables and paragraphs of the
National Fuel Gas Code:
I. For Single Sentinel Boiler—Paragraph 11.2.9 and
table 11.11.
II. For multiple appliances—Paragraph 11.3.18 and table
11.12 (or 11.13 if applicable).
In addition, all requirements of the local gas utility, local
building codes and other authorities having jurisdiction
apply.
B. If an existing boiler is removed from a common venting sys-
tem, 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 914 mm (3 feet) above
any ridge within 3048 mm(10 feet) of the chimney.
MINIMUM CLEARANCES FOR COMBUSTIBLE
CONSTRUCTIONS
A. Minimum boiler clearances shall be as follows:
SENTINEL SERIES
MINIMUM CLEARANCES FOR COMBUSTIBLE
CONSTRUC TION. MINIMUM ALCOVE AND CLOSET
CLEARANCE.
)”6( mm 251tnorF
)”6( mm 251raeR
Left Side 152 mm (6”)
Right Side 305 mm (12”)
Top (above boiler) 711 mm (28”)
Flue Connector 152 mm (6”)
WARNING
SPECIAL ATTENTION FOR LIQUEFIED
PETROLEUM(L.P.)
PROPANE GAS-FIRED BOILER INSTALLATIONS
LPG appliances (boilers) shall be installed in
accordance with applicable provisions of NFPA 58
(Liquefied Petroleum Gas Code) latest edition for
installations in US and CAN/CGA B149.1 latest
edition for installations in Canada
Liquefied Petroleum (LP) propane gas is heavier than
air therefore Propane gas can accumulate at floor level.
If you suspect a leak, do not attempt to operate boiler.
A spark or flame from the appliance (boiler) or other
sources may ignite the accumulated propane gas
causing an explosion or fire. It is recommended that
inspections for gas leaks be performed periodically by
a licensed professional and that leak detection devices
be installed as a further safety measure.