Installation Instructions - Hotsy 1065SS Operating Instructions And Parts Manual

Gasoline Engine
The gasoline engine is preset for operation at altitudes
below 1000 feet above sea level. If operated at higher
altitudes, it may be necessary to install a high altitude
main jet in the carburetor. Contact a local authorized
engine sales and service center for details.
Pre-Operation Check
 Pump Oil (SAE 30W non-detergent oil)
 Cold Water Supply (6 gpm • 5/8" • 20 psi)
 Hose, wand, nozzle (nozzle size per serial plate)
 Water filter (intact, nonrestrictive)
 Engine fuel (unleaded 86 or higher)
 Engine oil (SAE 10W30)
 Burner fuel (No. 1 or No. 2 home heating fuel or
diesel)
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 ser-
viceman adjust your burner for a #1 or #2 smoke spot
on the Bacharach scale.
Wayne Oil Burner
Burner Air Adjustment:
The oil burner on this machine is preset for operation at
altitudes below 500 feet. If operated at higher altitudes,
it may be necessary to adjust the air band for a #1 or
#2 smoke spot on the Bacharach scale.
To adjust, start machine and turn burner ON. Loosen
two locking screws found on the air band and close air
band until black smoke appears from burner exhaust
vent. Note air band position. Next, slowly open the air
band until white smoke just starts to appear. Turn air
band halfway back to the previously noted position.
Tighten locking screws.
• For higher altitudes, the air band opening may
need to be increased; for lower altitude, the air band
may need to be decreased.
• For higher humidity, the air band opening may need
to be increased; for lower relative humidity, the air band
may need to be decreased.
10

INSTALLATION INSTRUCTIONS

HOTSY 965SS-1075SS • 9.807-621.0 • Rev. 09/18
• For higher ambient temperatures the air band
opening may need to be increased; for lower ambient
temperatures, the air band opening may need to be
decreased.
Adjust to your operating location's environment as-
needed for best smoke spot and performance compli-
ant with local, state, and federal regulations.
Fuel Pressure Adjustment:
To adjust fuel pressure, First install a pressure gage
into the port just after the pump fuel exit. Turn the ad-
justing screw (located at the regulator port) clockwise
to increase, and counterclockwise to decrease. Do not
exceed 205 psi or lower the pressure below 130 PSI,
when checked at the post-pump pressure port.
The fuel pressure may need to be adjusted due to
altitude. For every 500 ft altitude above sea level, the
boiling point of water goes down 1 °F. At high altitude
environments, this boiling point change may require
the heat input to be lowered so the water input does
not turn to steam earlier than at the factory settings
and activate the pressure sensors and pressure relief
equipment when the unit is operated and much higher
altitudes from factory settings or local dealer site set-
tings. Check with your dealer before making local site
fuel pressure adjustments.
Also, as ambient temperature changes seasonally, the
fuel temperature in the feed tank and air temperature
inlet can impact fuel flow. In more extreme tempera-
tures, this local-site adjustment may also require dif-
ferent fuel nozzles for fuel inlet temperatures that are
at seasonal extremes (higher or lower) in locations
where the temperature changes are beyond moder-
ate temperatures of between 40°F and 90°F. Colder
temperatures will make for a thicker flow and less fine
a fuel spray while hotter temperatures will make for a
thinner flow a more fine spray with the same nozzle.
Consider alternate nozzle configurations from the
baseline factory-supplied nozzle for operating in such
temperature extremes if performance is not meeting
needs with air band and fuel pressure settings alone.
NOTE: When changing fuel pump, a by-pass
plug must be installed in return line port or
fuel pump will not prime.