Venting; General; Chimney Installations; Table 1 : Minimum Installation Clearances From Combustible Materials (Chimney Installation*) - Dettson OLR105A12D Mode D'emploi

CAUTION
Carefully check your furnace upon delivery for any
evidence of damage that may have occurred during
shipping and handling. Any claims for damages or lost
parts must be made with the transport company.
CAUTION
This furnace is not watertight and is not designed for
outdoor installation. This furnace shall be installed in
such a manner as to protect the electrical components
from water. Outdoor installation will lead to hazardous
electrical conditions and to premature furnace failure.
Position the furnace as closely as possible to the chimney or
vent terminal, providing ample clearance to permit easy
accessibility for cleaning the inside of the furnace, the
removal of filters, blower, motors, controls and flue
connections.
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.
The required minimum clearances for this furnace are
specified in Table 1.
CAUTION
Do NOT operate furnace in a corrosive atmosphere
containing chlorine, fluorine or any other damaging
chemicals. Refer to section 2.5.2.
Table 1 : 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 the Direct Vent manual for clearances of this application.
** Combustible floor requires accessory bases CFB-1 or HFB-1.
2.4.2

Chimney installations

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
2.4

VENTING

POISONOUS CARBON MONOXIDE GAS, FIRE AND
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.

General

2.4.1
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.
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.
POISONOUS CARBON MONOXIDE GAS HAZARD.
Never vent this
combustion appliance when side-wall venting.
To do so may result in asphyxiation and death to the
occupants.
OLR160 - OUF160
OLB64R – OHB64F
2.54 cm (1")
2.54 cm (1")
45.72 cm (18")
5.08 cm (2")
ø
60.96 cm (24")
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.
Without a barometric damper
Due to the lack of dilution air that would ordinarily be drawn
into the barometric damper, the dew point of the flue gases
is raised. To offset the increased tendency for vent
condensation, the chimney must be lined. The liner must be
insulated according
recommended by the manufacturer of the liner. Also, the
vent connector should be as short as possible and be
double wall construction or of single wall construction with
2.54 cm (1") of insulation.
5
WARNING
WARNING
furnace together with
OLR105 – (N)OLF105 – (N)OUF105
OLB53R – (N)OLB53F – (N)OHB53F
2.54 cm (1")
2.54 cm (1")
2.54 cm (1")
2.54 cm (1")
ø
60.96 cm (24")
to the insulating
another
procedure