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SECTION 1: INTRODUCTION
The following terms are used throughout this manual to
bring attention to the presence of potential hazards or to
important information concerning the product:
CAUTION: Indicates a potentially hazardous situa-
tion which, if not avoided, may result in minor injury
or property damage.
NOTE: Used to notify of special instructions on
installation, operation or maintenance which are
important to equipment but not related to personal
injury hazards.
CODE COMPLIANCE
Boiler installations must conform to the requirements of
the authority having jurisdiction or, in the absence of
such requirements, to the National Fuel Gas Code ANSI
Z223.1-latest edition. Where required by the authority
having jurisdiction, the installation must also conform to
the American Society of Mechanical Engineers Code for
"Controls and Safety Devices for Automatically Fired
Boilers", ANSI/ASME CSD-1.
All electrical wiring must be in accordance with National
Electric Code ANSI/NFPA No.70-latest edition and any
additional state or local code requirements. If an exter-
nal source is utilized, the boiler, when installed, must be
electrically grounded in accordance with requirements of
the authority having jurisdiction or, in the absence of
such requirements, with the National Electrical Code,
ANSI/NFPA No.70-latest edition. UL listed power limited
circuit cable is almost universally approved for safety
controls on heating equipment, either internally or exter-
nally, without protection of conduits or raceway.
DANGER: Indicates an imminently hazardous situ-
ation which, if not avoided, will result in death,
serious injury or substantial property damage.
WARNING: Indicates a potentially hazardous situa-
tion which, if not avoided, could result in death,
serious injury or substantial property damage.
VENTING REQUIREMENTS
When connecting to gas vents or chimneys, vent installa-
tions shall be in accordance with Part 7, Venting of
Equipment, of the National Fuel Gas Code, ANSI
Z223.1-latest edition, or applicable provisions of the local
building codes.
Vent connectors serving appliances vented by natural
draft shall not be connected into any portion of mechani-
cal draft systems operating under positive pressure.
When two or more appliances vent into a common flue,
the area of the common flue should be at least equal to
the area of the largest flue plus 50% of the areas of the
additional flue or vent connectors.
When existing boiler is removed from common venting
system, common venting system is likely to be too large
for proper venting of appliances remaining connected to
it. At time of removal of existing boiler, the following
steps shall be followed with each appliance remaining
connected to the common venting system placed in
operation, while other appliances remaining connected
to the common venting system are not in operation:
1. Seal all unused openings in common venting system.
2. Visually inspect the venting system for proper size and
horizontal pitch and determine there is no blockage or
restriction, leakage, corrosion and other deficiencies
which could cause an unsafe condition.
3. Insofar as is practical, close all building doors and win-
dows and all doors between the space in which the
appliances remaining connected to the common venting
system are located and other spaces of the building.
Turn on clothes dryers and any appliance not connected
to the common venting system. Turn on any exhaust
fans, such as range hoods and bathroom exhausts, so
they will operate at maximum speed. Do not operate a
summer exhaust fan. Close fireplace dampers.
4. Place in operation the appliance being inspected. Fol-
low the lighting instructions. Adjust thermostat so appli-
ance will operate continuously.
5. Test for spillage at draft hood relief opening after 5
minutes of main burner operation. Use the flame of a
match or candle, or smoke from cigarette, cigar or pipe.
6. After it has been determined that each appliance
remaining connected to common venting system proper-
ly vents when tested as outlined above, return doors,
windows, exhaust fans, fireplace dampers and any other
gas-burning appliance to previous conditions of use.
7. Any improper operation of the common venting sys-
tem should be corrected so the installation conforms
with National Fuel Gas Code, ANSI Z223.1-latest edi-
tion. When resizing any portion of the common venting
system, the common venting system should be resized
to approach the minimum size as determined using the
appropriate tables in Appendix G in the National Fuel
Gas Code, ANSI Z223.1-latest edition.
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