Crown Boiler CLBR68-112 - Manual (Page 15)

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The room thermostat should be located on an interior wall in the natural circulating path
of the room air.
The thermostat should not be installed in a location where it is directly exposed to,
• cold air infiltration, i.e. drafts from outside openings such as windows and doors,
• air currents produced by supply air registers, and
• heat from a nearby source, such as a fireplace, electrical appliances, lamps,
solar radiation, a wall enclosing warm air ducts, a chimney, or a flue gas vent.
These phenomena will adversely influence the operation of the thermostat, preventing it
from properly controlling the room temperature. Conversely, avoid installing the room
thermostat in a location where the natural circulation of air is blocked, such as behind
doors, in shelves, or in corners.
Generally, a room thermostat should be set at the lowest temperature that is
comfortable to the building occupants. This will result in the lowest cost to heat the
building.
Combustion Chamber
The furnace combustion chamber is a hollow, circular cylinder sealed at the bottom end
and open at the top end. The chamber is made of a lightweight, insulating, “soft”,
refractory material. The refractory material is composed of organically bound, alumina-
silica fibers that provide a high temperature region for combustion of the oil to occur.
This type of material exhibits quiet operation and improved combustion efficiency due to
faster heat-up times compared to hard, dense, ceramic refractory materials.
Oil Burner and Oil Nozzle Installation
c CAUTION: This oil furnace is designed to use No. 2 distillate fuel (home
heating) oil only.
This furnace is designed to utilize any one (1) of the following four (4), specially
modified, oil burners interchangeably:
• R.W. Beckett Corp. model AF burner, specification #’s CI3701 & CI3702,
• R.W. Beckett Corp. model NX burner, specification # CI4002
• Carlin Combustion Technology, Inc. model EZ-1HP, specification #
8528200BCLBR1, and
• Riello Canada Inc. model 40-F3, specification # C8511477.
NOTICE: NO other burners may be used in this application.
The heat output from the furnace is fixed, based on the size of nozzle installed in the oil
burner. Four (4) heat input rates are permissible: 85,000, 105,000, 120,000, and
140,000 BTUH.
• For the Riello 40-F3 burner option only, the maximum heat input rate is
133,000 BTUH.