97-6230 • HOTSY 555SS • Rev. 12/06
7
PRESSURE
W
ASHER
OPERA
TOR’S MANU
AL
installation instructions
getting started
IMPORTANT: Proper initial installation of equipment
will assure more satisfactory performance, longer
service life and lower maintenance cost.
IMPORTANT: The use of a backflow preventer on
the water supply hose is recommended and may be
required by local code.
The pressure washer should be run on a level surface
where it is not readily influenced by outside sources
such as strong winds, freezing temperatures, rain, etc.
The pressure washer should be located to assure easy
access for filling of fluids, adjustments and maintenance.
Normal precautions should be taken by the operator to
prevent moisture from reaching the pressure washer. It is
recommended that a partition be made between the wash
area and the pressure washer to prevent direct spray from
the wand coming in contact with the pressure washer.
Moisture reaching the equipment will reduce the pressure
washer’s life. All installations should comply with the local
codes covering such installations.
venting
CAUTION: All venting must be in accordance with ap-
plicable federal and state laws, and local ordinances.
Consult local heating contractors.
If the pressure washer is to be used in an enclosed area,
a flue must be installed to vent burner exhaust to the
outside atmosphere. Exhaust gases should not be vented
into a wall, a ceiling, or a concealed space of a building.
Be sure the flue is the same size as the burner exhaust
vent on the pressure washer lid. Poor draft will cause the
pressure washer to soot and not operate properly. When
selecting the location for installation, beware of poorly
ventilated locations or areas where exhaust fans may
cause an insufficient supply of oxygen. Proper combustion
can only be obtained when there is a sufficient supply of
oxygen available for the amount of fuel being burned. If it is
necessary to install the machine in a poorly ventilated area,
outside fresh air may have to be piped to the burner and a
fan installed to bring sufficient air into the machine. Locate
the pressure washer so that the flue will be as straight
as possible and protrude through the roof at a proper
height and location to provide adequate draft. This oil fired
pressure washer must have a draft regulator installed in
the flue (available from most heating contractors). A draft
regulator will permit proper upward flow of exhaust flue
gases.
oil burner
burner air adjustment:
The oil burner is preset for
operation at altitudes below 3000 feet. If operated at
higher altitudes, it may be necessary to adjust the air band
setting. Adjust the air band for a #1 or #2 smoke spot on
the Bacharach scale.
To adjust, start machine and turn burner ON (refer to
operation
for details). Loosen two locking screws found
in the air shutter openings (refer to
figure 3
) and close
air shutter until black smoke appears from burner exhaust
vent. Note air band position. Next, slowly open the air
shutter until white smoke just starts to appear. Turn air
shutter halfway back to the black smoke position previously
noted. Tighten locking screws.
If the desired position cannot be obtained using only the
air shutter, lock the air shutter in as close a position as
can be obtained, then repeat the above procedure on the
air band setting.
CAUTION: If white smoke appears from burner
exhaust vent during start-up or operation, discontinue
use and readjust air bands.
NOTE: If a flue is installed, have a professional service-
man adjust your burner for a #1 or #2 smoke spot on
the Bacharach scale.
For additional burner component information, see
burner assembly
. It is recommended that the oil burner
be serviced yearly or as needed. Contact your local service
center.
Figure 3 - Burner Air Band Adjustment
air shutter
locking screw
air shutter
air band
air band locking screw
air shutter locking
screw
