Slant/Fin Jaguar - Manual (Page 6)

Jaguar Caravan Multiple and Cascading Boilers 6
4. FRESH AIR AND CONTAMINATION PREVENTION
The combustion air supply must not be susceptible to contamina-
tion sources, whether the combustion air comes from the interior
or exterior of the building. Contaminated air can cause corrosion
or other damage to the heat exchanger and components of the
boiler, causing failure of these parts or unsafe operation.
Below is a list of products and areas which may cause
contaminated combustion air:
PRODUCTS TO AVOID
• Spray cans containing chloro/fluorocarbons
• 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
AREAS LIKELY TO HAVE CONTAMINANTS
• 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 refinishing areas and establishments
• New building construction
• Remodeling areas
• Garages with workshops
5. BOILER ROOM AIR SUPPLY AND VENTILATION
An ample supply of air is required for combustion and ventilation.
When buildings are insulated, caulked and weather-stripped, now
or later on, direct openings to outside may be required and should
be provided. If the boiler is not near an outside wall, air may be
ducted to it from outside wall openings.
Provisions for combustion and ventilation air must be made in
accordance with section 5.3, Air for Combustion and Ventilation, of
the National Fuel Gas Code, ANSI Z223.1-latest edition, or appli-
cable provisions of the local building codes. The following recom-
mendation applies to buildings of energy-saving construction, fully
caulked and weatherstripped.
INSTALLATION IN ENCLOSED BOILER ROOM REQUIRES
TWO UNOBSTRUCTED OPENINGS FOR PASSAGE OF AIR
INTO THE BOILER ROOM.
A. NON-DIRECT VENT INSTALLATION
1. Air drawn horizontally from outdoors DIRECTLY through
an outside wall; one louvered opening near the floor and one
louvered opening near the ceiling, each opening with a mini-
mum FREE air passage area of 1 square inch per 4000
Btuh of total appliances’ input.
2. Air drawn horizontally through HORIZONTAL DUCTS; one
opening near the floor and one opening near the ceiling, each
opening with a minimum FREE air passage area of 1 square
inch per 2000 Btuh of total appliances’ input.
3. Air drawn VERTICALLY from outdoors; one opening at the
floor and one opening at the ceiling, each opening with a mini-
mum FREE air passage area of 1 square inch per 4000
Btuh of total appliances’ input.
4. Air drawn from inside the building; one opening near the
floor and one opening near the ceiling, each opening with a
minimum FREE air passage area of 1 square inch per 1000
Btuh of total appliances’ input.
IF BOILERS ARE INSTALLED ADJACENT TO OTHER FUEL
BURNING EQUIPMENT, THE AREA OF FREE OPENINGS
MUST BE APPROPRIATELY INCREASED TO ACCOMMODATE
THE ADDITIONAL LOAD.
B. DIRECT VENT INSTALLATION
Adequate air supply should be provided to prevent overheating of
the boiler controls and boiler room. Openings for passage of air
into the boiler room for direct-vent installation must be at least
1 ⁄
2
of
the openings required for the non-direct vent as
mentioned above.
If additional non-direct vent appliances are installed in the same
space and adequate air openings are provided for them, there are
no additional air openings required for the Jaguar
J-390C boiler.
For both direct and non-direct installation, the following must be
considered:
-
Openings must never be reduced or closed. If doors or windows
are used for air supply, they must be locked open.
- Protect against closure of openings by snow and debris.
Inspect frequently.
- No mechanical draft exhaust or supply fans are to be used in
or near the boiler area.
- Boiler area must never be under negative pressure. The flow of
combustion and ventilating air to the boiler must not be
obstructed.