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Minimum Installation clearances from combustible materials (Chimney installation*)
LOCATION
APPLICATION
Furnace
Sides
Supply plenum, warm air duct within 6' of furnace
Back
Furnace
Top
Furnace casing or plenum
Bottom
Furnace – combustible floor **
Front
Furnace
* See Part 1 Section 4.3 for Direct Vent application clearances.
** Combustible floor requires accessory bases CFB-1 or HFB-1.
However, do not install furnace directly on carpet or other combustible
material which can trap air under the furnace floor.
The furnace must be installed level for safe and quiet operation.
CAUTION
Do NOT operate furnace in a corrosive atmosphere
containing chlorine, fluorine or any other damaging
chemicals. Refer to Part 1, section 5.2.
1.4
VENTING
1.4.1
General
Furnaces can be vented in several ways:
Chimney Vented
Using the Beckett AFG or Riello 40-F burner, the furnaces can be
chimney vented with or without a barometric damper. The unit will
operate at a negative overfire draft and flue draft.
WARNING
Poisonous
carbon
monoxide
explosion hazard.
Read and follow all instructions in this section.
Failure to properly vent this furnace can cause
death, bodily injury and/or property damage.
WARNING
Poisonous carbon monoxide gas hazard.
Never vent this furnace together with another
combustion appliance when side-wall venting.
To do so may result in asphyxiation and death to
the occupants.
TABLE 1
OLB6-OHB6-OLR160 OUF160
Side-wall Vented
Using the Beckett AFII or Riello 40-BF burner with the integral pre-
and post-purge controls, the system can be side-wall vented for
maximum efficiency and without the use of a side-wall power vent.
The unit will operate at a positive overfire draft and flue draft.
1.4.2
When set up for chimney venting, this furnace is certified for use with
an L-vent, A-vent, tile-lined and metal-liner-tile lined chimney, and can
be vented both with and without a barometric draft damper. However,
this furnace is not approved for use without a barometric damper if it is
to be vented together with another oil-fired appliance such as a water
heater.
With a barometric damper
This furnace may be vented into a chimney of suitable size and
adequate chimney base temperature, as specified in the Installation
Code. When a barometric damper is used, the air entering the damper
reduces the possibility of vent condensation. The relevant excerpt
from the code is found in this section and can be used as a guide
where local or national codes do not exist. One option to increase the
chimney base temperature is to use vent connection insulation.
gas,
fire
and
Poisonous carbon monoxide gas hazard.
Never install a hand operated damper in the vent
pipe. However, any Underwriters Laboratories listed
electrically operated automatic type vent damper
may be installed if desired. Be sure to follow the
instructions provided with vent damper. Read and
follow all instructions in this section.
Failure to properly vent this furnace or other
appliances can result in death, personal injury
and/or property damage.
OLB5-OHB5-OLR105 OL105-
NOLF105-OUF105-NOUF105
2.5 cm (1")
2.5 cm (1")
46 cm (18")
5 cm (2")
ø
60 cm (24")
Chimney installations
WARNING
2.5 cm (1")
2.5 cm (1")
2.5 cm (1")
2.5 cm (1")
ø
60 cm (24")
5
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