Alternate Heating COAL GUN S1000, Инструкция по установке и эксплуатации

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6
COMBUSTION AIR SUPPLY
It is important to make provision for adequate
supply of combustion air, either via natural
infiltration through a door or window or by
ducting outside. If combustion air is ducted
from the outside, then install a metal vent pipe
of sufficient diameter for the boiler to be used.
Contact Alternate Heating Systems if an outside
air ducting kit is required.
When the intake is ducted outside, inspect the
opening regularly to be sure that it does not
become obstructed by debris.
DRAFT CONTROLS
Where excessive natural draft exists, a
barometric damper is required to prevent the
boiler from overheating. The likelihood of this
condition increases with increased chimney
height. It is a good idea to include a barometric
damper when chimneys are taller than 20 feet.
The standard type “M” field control with a “T”
is recommended for satisfactory performance.
Excessive draft through the boiler will allow an
excessive amount of heat from the boiler to
escape up the chimney. A draft control will
help reduce this loss.
NOTE: The information in the rest of this
section is provided by Field Controls, LLC ,
Kinston, North Carolina, 252.522.3031. This
information is used with their permission.
Some information may not apply to coal
burning systems. The information is taken
from Field Controls, LLC website at:
www.fieldcontrols.com/draftcontrol.php. See
the Field Controls website for specific
models of draft controls or to place an order.
For proper operation and efficient fuel
consumption in oil, gas and/or coal-fired heating
appliances, draft must remain relatively
constant, and above .04 inches water column, as
measured with a manometer. When it is,
combustion is more complete, fuels are utilized
efficiently and money is saved.
Field Draft Controls maintain consistent draft by
counteracting the negative forces caused by
changes in temperature and barometric pressure,
and the effects of wind.
How Draft Controls Work
NOTE: See diagram below which has been
modified for this manual.
Static pressure of the cool air (1) exerts pressure
on the outside of the furnace or boiler, the
breaching, and stack.
The pressure difference between the room air
and heated gas (air) causes products of
combustion (2) to flow (draft) through the unit
and rise through the breaching and chimney.
Room temperature air (3) enters through the
barometric draft control (4) in the precise
amount needed to overcome the excess drafts
caused by temperature variations, wind
fluctuations and barometric pressure changes.
Combustion of fuel is completed and the process
is stabilized. The velocity of combustion gases
through the heat exchanger is slowed so more
heat is extracted. The unit operates more
efficiently, reliably and requires less
maintenance.