5
1.5)
COMBUSTION AIR
WARNING
Poisonous carbon monoxide gas hazard.
Comply with ANSI/NFPA (in the U.S.) or CSA (in
Canada) 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.
1.5.1) 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 requirements of the
furnace. However, home improvements such as new windows,
doors,
and weather stripping have dramatically 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 negative
pressure in the home. Should this occur, the chimney becomes less
and less effective and can easily downdraft.
Heat Recovery Ventilation (HRV) systems 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.
1.5.2) Contaminated Combustion Air
Installation 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 the substances listed below. The installation must be carefully
evaluated, as it may be necessary to provide outside air for
combustion.
a.
Commercial buildings;
b.
Buildings with indoor pools;
c.
Furnaces installed near chemical storage areas.
Exposure to these 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 solvent (such as perchloroethylene);
i.
Printing inks, paint removers, varnishes, etc..;
j.
Hydrochloric acid;
k.
Solvent based cements and glues;
l.
Antistatic fabric softeners for clothes dryers;
m. Acid based masonry cleaning materials.
1.6)
OIL TANKS AND LINES
Check your local codes for the installation of the tank and accessories.
A manual shut-off valve and an oil filter shall be installed in sequence
from tank to burner. Be sure that the oil line is clean before connecting
to the burner. The oil line should be protected to eliminate any
possible damage. Installations having the fuel oil tank below the
burner level must employ a two pipe fuel supply system with an
appropriate fuel pump (for more than an 8 foot rise use a 2 stage
pump and for more than a 16 foot rise use an auxiliary pump).
Follow the pump manufacturer’s instructions to determine the size of
tubing you need in relation to the rise, or the horizontal distance.
Inspect the entire distribution system for leaks at the beginning of each
heating season.
1.7)
BURNER INSTALLATION
IMPORTANT: The burner must always be installed in
the upright position with the ignition control on top.
CAUTION
NEVER use the “interrupted ignition” function if a
Honeywell R7184 series combustion relay is installed
on the burner.
Mounting the burner
a.
The warm air furnace burner mounting plate has a four bolt
configuration;
b.
Position the mounting gasket between the mounting flange and
the appliance burner mounting plate. Line up the holes in the
mounting flange with the studs on the appliance mounting plate
and securely bolt in place.
After the burner is mounted
a.
Remove drawer assembly or air tube combination;
b.
Install nozzle (see specifications);
c.
Confirm electrode settings;
d.
Make the electrical connections;
e.
Complete oil line connections.
CAUTION
Do not fire the burner until you have checked the
following:
Checking the polarity
Oil burners used on the furnaces have solid state control systems
which makes them sensitive to the proper connection of the hot and
neutral power lines. The controls will be damaged if the two lines are
reversed.
1.
Set your voltmeter to line voltage;
2.
Place one prong on your grounded electric entry box and one
prong on the black wire;
3.
Read the voltage;
4.
If the voltage is zero, check the white wire. If line voltage shows,
reverse the 115-volt leads entering the furnace junction box (see
Figure 1, p. 7);
5.
If you do not have a voltmeter, use a pilot light.
