Maintenance - HeatStar HS250AG Guide Du Propriétaire Et Instructions D'installation

• Undo the screws that secure the combustion head (3) to the
combustion chamber (#1 FIG. 4)
• Remove the three screws on the burner head plate and
change the diffusion ring securing it in such a way that the
ignition electrode is equidistant between the two subsequent
holes;
• Calibrate the gas pressure switch on the gas valve group (#4
Fig.3):
• Regulate the gas pressure switch to a value equal to 80% the
supply pressure;
• Regulate the pressure regulator for the gas valve group
(Fig.3); to the burner pressure stated in SPECIFICATIONS.
• Connect a gauge to the pressure intake (1) upstream and a
second gauge to the pressure intake downstream (2) of the
valve group;
• Start the heater and take the reading off the 1st supply
pressure gauge and if necessary adjust the pressure regulator
(#3 FIG. 6) for the gas supply system until the correct supply
pressure shown in SPECIFICATIONS is reached.
• Take a reading off the 2nd working pressure gauge and if
necessary use a screwdriver to adjust the pressure of the
gas valve group (#4 FIG. 3) to restore the working pressure
shown in SPECIFICATIONS.
• Apply the adhesive label with the words "SET UP FOR ..."
corresponding to the type of fuel and the chosen category
on the gas valve group

MAINTENANCE

To regulate operation of the unit, the fans, combustion
chamber and the burner must be at least annually inspected
and periodically cleaned by a qualified service person.
Warning
Before performing any maintenance operation:
• Stop the machine as indicated in the "STOP"
paragraph;
• Disengage the power supply by removing the plug
from the power socket;
• Close the gas supply stop on/off valve and shut-off
valve (f);
• Wait for the heater to cool down.
During cleaning any foreign bodies must be removed from the
fan suction grille.
To access the burner, remove the flame guard panel (4)
by removing the four screws and clean carefully inside the
combustion chamber and the whole burner head: any debris
shall be taken away.
Warning
Do not direct jets of compressed air towards the air
pressure points near the main fan: the air pressure
switch could be permanently damaged.
Cleaning of the burner shall be regularly performed by
qualified service person. To access the burner, remove the
flame guard panel of combustion chamber (front side) and
Forced-Air Agricultural Construction Heater
clean carefully inside the combustion chamber and the whole
burner head and electrodes.
This heater can be washed, provided that:
A. The heater is disconnected from the electrical supply.
B. All access panels are securely closed.
C. Water spray nozzle shall not discharge within 6 feet of the
heater.
D. The heater is not reconnected to electrical supply until
thoroughly dried.
Improper cleaning of the heater can cause severe personal
injury or property damage due to water and/or cleaning
solutions:
A. In electrical components, connections and wires causing
electrical shocks or component failure.
B. On gas control components causing corrosion which can
result in gas leaks and fire or explosion from the leak. The
hose assembly must be protected from the traffic, building
materials and contact with hot surfaces both during use and
while in storage.
Warning
After cleaning, the flame guard shield must be screwed
securely back in place before operating heater.
Operating the heater without the flame guard shield can result
in combustion producing CO (carbon monoxide) which can
pose danger to those exposed to this to this environment.
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Operating Instructions and Owner's Manual