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1) Remove the aspiration grill which is on fan motor side of the
unit.
2) Remove the screws (2) from the motor slide.
3) Remove the belt (1).
4) Loosen the bolts (3).
5) Turn the pulley clockwise and anti-clockwise in order to in-
crease or reduce the volume of air.
6) Tighten the bolts (3).
7) Put back the aspirations grill
8) Repeat operations from (1) to (7) until the correct volume of air
flow has been achieved.
DRAFT
The evacuation smoke flues shall be made with stee.
Efficient combustion and trouble-free working of the burner de-
pend on efficient flue draft. The unit must be connected to the chimney
flue in accordance with current legal regulations and in line with the
following guidelines:
• The tube which carries the smoke should cover as short a dis-
tance as possible and should slant upwards.
• There should be no sharp bends in the tubes and the diameter of
the tubes must never be reduced.
• Every heater must have its own chimney.
• Flue draft must at least correspond to the minimum compulsory
level in the Technical Specifications.
ANALYSIS OF COMBUSTION WASTE PRODUCTS
The probes which check the composition of combustion waste
products and smoke temperature must be positioned as indicated in
Fig. 2.
When these tests have been completed the hole which was drilled
for the probe must be sealed with a material which is resistant to high
temperatures and which ensures that the tube remains airtight.
CONNECTION TO FUEL SUPPLY
To connect the burner to the fuel supply follow the instructions in
the Burner Instruction Manual.
The gas burner can use both methane gas or propane. Burners are
predisposed at factory to be used with natural gas. If propane shall be
used, burners shall be adapted according to the instruction manual of
the burner.
In case of connection of heater to natural gas,the installation shall
conform with local codes, or, in the absence of local code, with the Na-
tional Fuel Gas Code ANSI Z223.1/NFPA and the Natural Gas and
Propane Installation Code, CSA B149.1.
In case of connection of heater to propane supply cylinder, the in-
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3
2
Fig. 1
200 mm
Fig. 2
stallation shall conform with local codes or, in the absence of local
code, with tyhe Standard for the Storage and Handling of Liquified Pe-
troleum Gases, ANSI/FNPA 548 and the Natural Gas and Propane In-
stallation Code, CSA B149.1.
Heater must be located at least 6 ft in the U.S. or 10 ft in Canada
from any propane gas container.
Propane gas cylinder shall be in compliance with national standards
and shall be arranged to provide for vapor withdrawal from the operating
cylinder.
The gas shall be turned off at the propane supply cylinder when the
heater is not in use.
Visually inspect hose assembly prior to each use of the heater. If it
is evident there is excessive abrasion or wear, or the hose is cut, it must
be replaced prior to the heater being put into operation.
After installation, proper instruments or devices shall be used to
check and avoid any gas leakage. Gas leakage testing shall be regularly
operated.
REGULATION OF COMBUSTION - I° OPERATION
After having checked the hermetic seal and of combustion waste
products line, heater may be operated for the first time.
To perform regulation of combustion correctly, combustion waste
products must be analyzed using appropriate instruments: values rec-
ommended by actual standards must be reached.
The regulation procedure has been on the Burner Instruction Man-
ual; final values of CO2 shall be correspondant to excess air factor of
1,2 (12,5 for gas-oil, 9,7% for G20, 9,6% for G25, 11,7% for G30 and
11,7% for G31) while CO level shall be less than 75 ppm.
INSTRUCTIONS FOR USE
SWITCHING ON
• Set the control knob (2) in position "0";
• Turn on the disconnecting switch on the electric switchboard;
• If the unit is operated manually turn the control knob to
burner starts up, the combustion chamber heats up and then the
fan starts;
• If the unit operates automatically set the room thermostat at the
desired level and turn the control knob (2) to
now start and stop automatically.
• If the heater doesn't start after you have completed the above
operations consult the Troubleshooting section of this manual.
TURNING OFF
In manual operation turn control knob (2) to "0" or turn off control
in automatic operation.
The burner stops while the fan turns itself on and off until the
combustion chamber has completely cooled down.
Warning
Never stop the heater by simply turning off the discon-
necting switch on the electric switchboard. The electri-
cal supply must only be disconnected when the fan has
come to a complete stop.
VENTILATION
When the control knob is turned to the symbol
ates in continuous fan mode.
MAINTENANCE
Warning
The following operations must be carried out by quali-
fied personnel only.
Before carrying out any maintenance operation the
heater must be disconnected from the mains. Therefore:
• Stop the machine as instructed above
• Turn off the disconnecting switch on the electric
switchboard.
• Wait until the heater has cooled.
CLEANING THE HEAT EXCHANGER AND THE COMBUSTION CHAMBER
For the heater to operate efficiently the heat exchanger and com-
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GB
.The
: the heater will
the heater oper-
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