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Figure22 Corrosive contaminants and sources
Do not install the Evergreen
®
boiler into a common vent
with any other appliance. is will cause ue gas spillage or
appliance malfunction, resulting in possible severe personal
injury, death or substantial property damage.
Existing common vent systems may be too large for the
appliances remaining connected aer the existing boiler
is removed.
Failure to follow all instructions can result in ue gas
spillage and carbon monoxide emissions, causing severe
personal injury or death.
Use ONLY the venting materials and venting manufactur-
ers’ components and systems approved by Weil-McLain.
Follow all instructions provided by the venting component
and system manufacturer. Failure to do so can cause ue
gas spillage and carbon monoxide emissions, resulting in
severe personal injury or death.
Part number 550-100-211/0122
– 19 –
220 /29 9/3 00 /39 9
Areaslikelytohavecontaminants
Dry cleaning/laundry areas and establishments
Swimming pools
Metal fabrication plants
Beauty shops
Refrigeration repair shops
Photo processing plants
Auto body shops
Plastic manufacturing plants
Furniture renishing areas and establishments
New building construction
Remodeling areas
Garages with workshops
Buildings under construction (where air is contaminated
with particulates)
Productstoavoid
Spray cans containing chloro/uorocarbons
Permanent wave solutions
Chlorinated waxes/cleaners
Chlorine-based swimming pool chemicals
Calcium chloride used for thawing
Sodium chloride used for water softening
Refrigerant leaks
Paint or varnish removers
Hydrochloric acid/muriatic acid
Cements and glues
Antistatic fabric softeners used in clothes dryers
Chlorine-type bleaches, detergents, and cleaning
solvents found in household laundry rooms
Adhesives used to fasten building products and other
similar products
Excessive dust and dirt
Youmustpipecombustionairtothe
boilerairintake
.
Install air inlet piping for the Evergreen
®
boiler as described in this manual.
e air termination tting must be in-
stalled with the clearances and geometry
relative to the vent outlet depicted in this
manual to ensure that ue products do not
enter the air intake.
Ensure that the combustion air will
not contain any of the contaminants in
Figure22. Do not pipe combustion air near
a swimming pool, for example. Avoid areas
subject to exhaust fumes from laundry
facilities. ese areas will always contain
contaminants.
Contaminated combustion air will damage
the boiler, resulting in possible severe per-
sonal injury, death or substantial property
damage.
TheEvergreen
®
boilercannotbecommonventedwithanyother
appliance
. When an existing boiler is replaced with an Evergreen
®
boiler,
the Evergreen
®
boiler CANNOT use the existing common vent. e Ev-
ergreen
®
boiler requires its own vent and air piping, as specied in this
manual. is may cause a problem for the appliances that remain on the
original common vent, because the vent may be too large.
Perform the test sequence below for
each appliance remaining on the
original common vent system. Operate each appliance individually with
other appliances turned o. is procedure will test whether the common
vent system can properly vent each appliance.
(The following is intended to test whether the appliances remaining on an
existing vent system will operate satisfactorily.)
1. Seal any unused openings in the 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 or
other deciencies which could cause an unsafe condition.
3. Test vent system — Insofar as is practical, close all building doors and
windows and all doors between the space in which the appliances remain-
ing 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 replace dampers.
4. Place in operation the appliance being inspected. Follow the lighting
instructions. Adjust thermostat so appliance will operate continuously.
5. Test for spillage at dra hood relief opening aer 5 minutes of main
burner operation. Use the ame of a match or candle, or smoke from
a cigarette, cigar, or pipe.
6. Aer it has been determined that each appliance remaining connected
to the common venting system properly vents when tested as outlined
herein, return doors, windows, exhaust fans, replace dampers, and
any other gas-burning appliance to their previous conditions of use.
Any improper operation of common venting system should be corrected so
the installation conforms with the National Fuel Gas Code, ANSI Z223.1/
NFPA 54 — latest edition. Correct by re-sizing to approach the minimum
size as determined using the appropriate tables in Part13 of that code.
Canadian installations must comply with
Natural Gas and Propane Instal-
lation Code, CAN/CSA
B149.1 or B149.2.
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