Dettson ODH53-F, Инструкция по эксплуатации

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The following table is an excerpt from the Installation Code and
indicates the permitted flue sizes and minimum base temperatures for
circular flues in chimneys with thermal resistance of less than R6 (6
ft
2

hr

F / Btu). Where a new appliance, burner, or chimney is
installed, chimney vent sizes and maximum flue gas temperatures
(measured at the chimney connector with the barometric damper
shut, after 5 minutes of operation) shall comply with Table 2.
Note : Thermal resistance values for typical chimneys
are as follows:
R2 (2 ft
2

hr

F / Btu): Clay-lined masonry, A-vent
R3 (3 ft
2

hr

F / Btu): Metal liner in clay-lined Masonry
R6 (6 ft
2

hr

F / Btu): Metal or clay-lined masonry with R4.5 (4.5
ft
2

hr

F / Btu) insulation between liner
and masonry (e.g. 2" of expanded mica or 1
3/8" of high density glass fibreboard.)
Applying Table 2
If a furnace with a 0.60 USGPH nozzle is to be connected to a 20 foot
tall clay-lined masonry chimney, the thermal resistance of this type of
chimney is R2, (which is less than R6). The actual firing rate at 156
psig is 1.25 x .60 = .75. Therefore this table shall apply as follows:
The minimum size permitted shall be 101.6 mm (4") inside diameter;
The maximum size permitted shall be 127.0 mm (5") inside diameter;
The minimum base temperature shall be about 160 ° C (320 ° F).
2.2.3- Side-wall venting
The furnace can be side-wall vented without the use of a side-wall
power vent with the high static pressure Beckett AFII and Riello 40-
BF oil burners.
Outdoor combustion air must be directly
connected to the burner or the venting system will not function.
Refer to the installation manual of the side wall venting system.
Table 2: Flue pipe diameter and minimum temperature
Total input rating of all
connected appliances
Flue inside diameter
Minimum base temperature
for chimney height of:
kW Btu/h USGPH Min. Max. 11' 20' 28' 36'
21 70,000 0.50 76.2 mm (3") 0.13 m (5") 149°C / 300°F 204°C / 400°F 279°C / 535°F 385°C / 725°F
27 91,000 0.65 76.2 mm (3") 0.13 m (5") 135°C / 275°F 171°C / 340°F 221°C / 430°F 279°C / 535°F
31 105,000 0.75 0.1 m (4") 0.13 m (5") 127°C / 260°F 160°C / 320°F 193°C / 380°F 246°C / 475°F
36 119,000 0.85 0.1 m (4") 0.13 m (5") 121°C / 250°F 149°C / 300°F 179°C / 355°F 221°C / 430°F
41 140,000 1.00 0.1 m (4") 0.15 m (6") 107°C / 225°F 149°C / 300°F 185°C / 365°F 221°C / 430°F
51 175,000 1.25 0.1 m (4") 0.15 m (6") 116°C / 240°F 135°C / 275°F 160°C / 320°F 185°C / 365°F
2.3- AIR FOR COMBUSTION
WARNING
Poisonous carbon monoxide gas hazard.
Comply with NFPA standards for the installation of Oil
Burning Equipment and applicable provisions of local
building codes to provide combustion and ventilation
air.
Failure to provide adequate combustion and
ventilation air can result in personal injury and/or
death.
2.3.1- General
Oil furnaces must have an adequate supply of combustion air. It is
common practice to assume that older homes have sufficient infiltration
to accommodate the combustion air requirement for the furnace.
However, home improvements such as new windows, doors, and
weather stripping have drastically reduced the volume of air infiltration
into the home.
Home air exhausters are common. Bathroom and kitchen fans, power
vented clothes dryers, and water heaters all tend to create a negative
pressure in the home. Should this occur, the chimney becomes less and
less effective and can easily downdraft.
Heat Recovery Ventilation Systems (HRVs) are gaining in popularity.
HRVs are not designed to supply combustion air. If not properly
balanced, a serious negative pressure condition could develop in the
dwelling.
2.3.2- Contaminated Combustion Air
Installations in certain areas or types of structures will increase the
exposure to chemicals or Halogens which may harm the furnace. These
instances will require that only outside air be used for combustion.
The following areas or types of structures may contain or be exposed to
certain substances, potentially requiring outside air for combustion:
a. Commercial buildings;
b. Buildings with indoor pools;
c. Furnaces installed near chemical storage areas.
Exposure to the following substances:
a. Permanent wave chemicals for hair;
b. Chlorinated waxes and cleaners;
c. Chlorine based swimming pool chemicals;
d. Water softening chemicals;
e. De-icing salts or chemicals;
f. Carbon tetrachloride;
g. Halogen type refrigerants;
h. Cleaning solvents (such as perchloroethylene);
i. Printing inks, paint removers, varnishes, etc.;
j. Hydrochloric acid;
k. Solvent based glue;
l. Antistatic fabric softeners for clothes dryers;
m. Acid based masonry cleaning materials.