Carlin 301CRD - Manual (Page 4)

Model 201CRD & 301CRD 240-VAC Advanced oil burners — Instruction manual
Carlin part number MN2301A Rev. 10/21/10
– 4 –
2. Prepare site • assemble burner • mount burner
Vent system
General
Do not install this burner unless you have verifi ed the
entire vent system and the appliance are in good condi-
tion and comply with all applicable codes.
• The vent and chimney must be sized and constructed
in accordance with all applicable codes.
• Do not install or use an existing manual damper in
the breeching (vent connector) or chimney.
• Do not connect the appliance vent connector to a
chimney or vent serving a fi replace, incinerator or
solid-fuel-burning apparatus.
• In a cold climate, do not vent into a masonry chimney
that has one or more sides exposed to the outside.
You must install a listed stainless steel liner in the
chimney to vent the fl ue products.
• A defective vent system could result in severe personal
injury, death or substantial property damage.
Prepare vent/chimney
• Secure all metal vent joints with screws, following the vent manufac-
turer’s instructions.
• Seal all joints in the vent system and chimney.
• Repair masonry chimney lining and repair all mortar joints as
needed.
• Install a double-acting barometric draft regulator in the vent piping if
specifi ed in the appliance manual. (The damper must be located in
the same space as the appliance.)
• Provide support for the vent piping. Do not rest the weight of any of
the vent piping on the appliance fl ue outlet.
Combustion and ventilation air
openings
General
Check appliance manual and applicable codes for required sizing,
design and placement of combustion/ventilation air openings. You can
use the following general guidelines, taken from NFPA 31, provided
they meet all local requirements.
Free area — Louvers and screens
• Air opening sizes are always given in free area. This means after
deduction for louver obstruction. If you can’t fi nd the louver reduction
for the grilles used, assume free area is 20% of total for wood louvers,
or 60% of total for metal louvers.
• Screens can be no fi ner than ¼-inch mesh, and must be accessible
for cleaning.
Residential installation air openings
Residential — Unconfi ned spaces (at least 7,000 cubic feet per GPH)
• An unconfi ned space means a room with at least 7,000 cubic feet volume for
each GPH input (or 50 cubic feet per MBH) of all appliances in the room.
Example: For a boiler room housing a 6.00 GPH input burner/appliance, multiply
6 times 7,000 cubic feet, equals 42,000 cubic feet. The room must have a
volume of 42,000 cubic feet to be classifi ed as an unconfi ned space. (If the
boiler room has an 8-foot ceiling height, the room would have to have 5,250
square feet, or about 73 feet square.)
• Most boiler rooms do not provide this much volume, and must be treated as
confi ned spaces, requiring dedicated combustion air openings, sized as in the
following.
• Open residential basements and crawl spaces are often large enough, and
will generally allow enough air infi ltration, so special provisions will seldom be
required.
• If the building is tightly constructed, you will have to provide outside air open-
ings into the building regardless of the boiler room volume. The total free area
of these openings must be at least 1 square inch per 5,000 Btuh (28 square
inches per GPH) of all appliances in the space.
• See Table 2 for a summary.
Residential — Confi ned spaces (less than 7,000 cubic feet per GPH)
• Air taken from inside building only —
• Provide two openings — one near the fl oor, the other near the ceiling. Provide
free area of 140 square inches per GPH input.
• If the building is tightly constructed, provide dedicated air opening(s) into the
building with at least 30 square inches free area per GPH.
• Air taken from outside —
• Direct through outside wall or vertical ducts:
Provide two openings — one near the fl oor, the other near the ceiling. Provide
free area of at least 35 square inches per GPH input.
• Through horizontal ducts:
Provide two openings — one near the fl oor, the other near the ceiling. Provide
free area of at least 70 square inches per GPH input.
• Ventilation air from inside, with combustion air from outside
• Size openings to interior to provide 140 square inches free area per GPH
input.
• Size the outside combustion air duct to provide 28 square inches free area per
GPH.
• See Table 2 for a summary.
Commercial installation air openings
Commercial — Air openings directly from outside to boiler room
• Provide one opening that provides a free area of at least 28 square inches
per GPH input.
Example: For a boiler room housing boilers totalling 10 GPH fuel oil input,
the area opening must have a free area of no less than 10 times 28, or
280 square inches. If the opening is wood louvered, divide by 20%, or the
opening must be 1400 square inches (about 38 inches by 38 inches). If
the opening is metal louvered, divide by 60%, or the opening must be 467
square inches (about 22 inches by 22 inches).