BIEMMEDUE GAN User manual

NATURAL GAS / LPG FIRED HEATER
GENERATEUR D’AIR CHAUD AU GAS NATUREL/L.P.G.
GAN
L-L 110.01-BM
INSTRUCTION MANUAL
MANUEL D’INSTRUCTIONS

WARNING
BEFORE USING THE HEATER, READ AND UNDERSTAND ALL INSTRUCTIONS AND FOLLOW
THEM CAREFULLY.
THE MANUFACTURER IS NOT RESPONSIBLE FOR DAMAGES TO GOODS OR PERSONS DUE
TO IMPROPER USE OF THE UNITS.
GENERAL HAZARD WARNING
FAILURE TO COMPLY WITH THE PRECAUTIONS AND INSTRUCTIONS PROVIDED WITH THIS
HEATER, CAN RESULT IN DEATH, SERIOUS INJURY AND PROPERTY LOSS OR DAMAGE
FROM HAZARDS OF FIRE, EXPLOSION, BURN, ASPHYXIATION, CARBON MONOXIDE
POISONING, AND / OR ELECTRICAL SHOCK.
ONLY PERSONS WHO CAN UNDERSTAND AND FOLLOW THE INSTRUCTIONS SHOULD USE
OR SERVICE THIS HEATER.
IF YOU NEED ASSISTANCE OR HEATER INFORMATION SUCH AS AN INSTRUCTION
MANUAL, LABEL, ETC., CONTACT THE MANUFACTURER.
WARNING: FIRE, BURN, INHALATION AND EXPLOSION HAZARD
KEEP SOLID COMBUSTIBLES, SUCH AS BUILDING MATERIALS, PAPER OR CARDBOARD, AT
SAFE DISTANCE AWAY FROM THE HEATER AS RECOMMENDED BY THE INSTRUCTIONS.
NEVER USE THE HEATER IN SPACES WHICH DO OR MAY CONTAIN VOLATILE OR
AIRBORNE COMBUSTIBLES, OR PRODUCTS SUCH AS GASOLINE, SOLVENTS, PAINT
THINNER, DUST PARTICLES OR UNKNOWN CHEMICALS.
WARNING
NOT FOR HOME OR RECREATIONAL VEHICLE USE. INSTALLATION OF THIS HEATER IN A
HOME OR RECREATIONAL VEHICLE MAY RESULT IN A FIRE OR EXPLOSION, PROPERTY
DAMAGE, PERSONAL INJURY OR LOSS OF FIRE.
WARNING
IMPROPER INSTALLATION, ADJUSTMENT, ALTERATION, SERVICE OR MAINTENANCE CAN
CAUSE INJURY OR DEATH.
READ THE INSTALLATION, OPERATING AND MAINTENANCE INSTRUCTIONS THOROUGHLY
BEFORE INSTALLING OR SERVICING THIS EQUIPMENT.
FOR YOUR SAFETY
IF YOU SMELL GAS:
1. OPEN WINDOWS
2. DO NOT TOUCH ELECTRICAL SWITCHES
3. EXTINGUISH ANY OPEN FLAME
4. IMMEDIATELY CALL YOUR GAS SUPPLIER
FOR YOUR SAFETY
DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPOURS AND LIQUIDS IN
THE VICINITY OF THIS OR ANY OTHER APPLIANCE.

WARNING
The heater is designed and approved for use as a construction heater in accordance with Standard
ANSI Z83,7 CGA 2.14.
CHECK WITH YOUR LOCAL FIRE SAFETY AUTHORITY IF YOU HAVE QUESTIONS ABOUT
APPLICATIONS.
Other standards govern the use of fuel gases and heat producing products in specific
applications.Your local authority can advise you about these.
WARNING
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 andwhile in storage.
WARNING
Proper gas supply must be provided to the inlet of the appliance.
Refer to rating plate for proper gas supply pressure.
Gas pressure in excess of maximum inlet pressure specified at the appliance inlet can cause fire or
explosions, leading to serious injury, death, building damage or loss of livestock.
Likewise, gas pressure below the minimum inlet pressure specified at the appliance inlet may cause
improper combustion,leading to asphyxation, carbon monoxide poisoning and therefore serious
injury or death to humans and livestock.
Position heater properly before use.
For either indoor or outdoor use adequate ventilation must be provided.
Minimum clearance from combustible materials and propane containers: 10 ft.
Do not operate heater with panels removed.
Not for use with ductwork.
To avoid injury from moving parts, disconnect all electrical power to equipment before opening
doors or removing panels.
WARNING
RETAIN THIS INSTRUCTION FOR FUTURE REFERENCE..

CONTROL PANEL
1COMBUSTION CHAMBER
2BURNER
3DIFFUSION RING
4FLAME GUARD SHIELD
5COOLING FAN
6IONIZATION ELECTRODE
7IGNITION ELECTRODE
8CONTROL FLAME RESET BUTTON
9HEATING SWITCH
10 ROOM THERMOSTAT PLUG
11 POWER CONTROL LAMP
12 SAFETY THERMOSTAT LAMP
13 VENTILATION MODE SWITCH
14 SAFETY THERMOSTAT RESET BUTTON
15 CABLE FASTENER FOR POWER CORD
MANIFOLD ASSEMBLY
Fig. 2
aSHUT OFF / FIRING VALVE
bMANIFOLD PRESSURE PORT (MANIFOLD)
cMANIFOLD PRESSURE REGULATOR
dMAIN GAS VALVE
4 1 6 3 2 7 5
a
b
c
d
8
9
10
13
11
12
14
15

EN
IMPORTANT
Before using the space heater, carefully read all of the instructions and follow them scrupulously. The manufacturer
cannot be held responsible for damage to persons and/or property caused by improper use of the equipment.
This instruction manual is an integral part of the equipment and must therefore be stored carefully and passed on with the
unit in the event of a change of ownership.
DESCRIPTION
The hot air generator is designed for heating medium and large
ventilated premises, for which a fixed heating system is required.
Heater is to be run on heating with natural gas or L.P.G. according
to gas supply pressures that must be in conformity with the national
laws.
Gases to be used are indicated in Tab. I together with the supply
pressures, the regulation of the gas valves group (manifold pressure)
and gas flow.
Heater is supplied after a complete functional test and it’s therefore
prearranged for one of the working gas indicated in Tab. I: an
adhesive label applied on the gas selector valve (d) indicates the
selected gas.
To change the type of gas, follow the detailed instructions
indicated in section “CHANGING TYPE OF GAS”.
The heater is of the direct combustion type. The air is heated by
the energy developed during combustion and then conveyed to the
environment to be heated together with the combustion products,
thus making available 100% of the thermal power produced. The
environment must be suitably ventilated in order to ensure adequate
air circu-lation.
In the event of serious malfunction various safety devices
(electronic flame control unit, overheating thermostat, air pressure
switch) trigger turning off the heater .
The electronic flame control unit monitors if the flame is irregular or
goes out, the safety thermostat triggers when the temperature in the
combustion chamber exceeds the safety limit value, the air pressure
switch will cut in if the airflow is insufficient.
In each of the said cases the unit stops according to the procedure
described in “OPERATING INSTRUCTIONS”.
In each of the said cases the lamp (8) will light up and the heater
will stop working. The heater can be restarted only by pressing the
reset button (8). Nonetheless, the cause that triggered the safety
device should always be carefully analyzed and resolved before
restarting the generator (cfr. “FAULTS, CAUSES AND REMEDIES”).
GENERAL ADVICES
Installation, setting and use of the heater must be effected in
accordance with the applicable regulations and laws relating to
machine use.
Warning Check with your local fire safety authority if you have
questions about applications
Here are a few guidelines which shall be followed:
• The instructions in this manual are carefully followed;
• Minimum clearances from combustible material must be:
1 m (3 feet) from side, ceiling, floor and rear (air inlet) of heater
3 m (10 feet) on air outlet of heater.
• Heater shall not be directed toward any propane-gas container
within 6 m (20 feet) and minimum clearances from gas cylinder
must be 3 m (10 feet)
• Don’t install the heater in places where there may be a risk of fire
or explosion
• All fire prevention regulations must be adhered to.
• The heater is not ductable and shall not be connected to any
ductwork for air distribution.
• The room or building which is being heated must be sufficiently
ventilated so that the heater has enough air to function properly;
• The air suction and/or supply pipes are not blocked in any way,
there are not sheets or covers resting on the machine or walls
and bulky objects near the heater;
• The generator is placed near a power switchboard having
specifications in conformity with those declared;
• The unit is placed in a fixed position;
• The generator is regularly monitored during operation and
checked before being started up;
• Don’t let animals or children near the heater.
• Make sure heater is inspected before each use, and at least
annually by a qualified service person.
• After use make sure the disconnecting switch is off.
When using any type of heater it is obligatory:
• not to exceed the maximum level of heat output of the furnace
(“TECHNICAL SPECIFICATION TABLE”);
• to make sure that there is adeguate air circulation and air supply
to the heater and that nothing is obstructing the aspiration and
expulsion of air; movement of air may be obstructed in various
ways including placing covers or other objects on the heater or
positioning the heater too near a wall or other large object. If the
airflow is not adequate, the combustion chamber will overheat
and the overheat thermostat will turn the burner off
(“OBSERVED FAULTS, CAUSES AND REMEDIES”).
INSTALLATION INSTRUCTION
Warning All the operations described in this paragraph must
be performed by professional and skilled personnel
only
The installation shall be in accordance with National Fuel Gas
Code ANSI Z223.1/NFPA 54 and with CAN1-B149.1 Installation
code.
An approved manual gas valve shall be provided by the installer.
The space heater can be installed on a support base, which must be:
• stable and horizontal
• made of non-combustible material
Accessories include support hooks to suspend the heater by hooking
it to the ceiling with ropes and/or chains of appropriate capacity and
length, to be attached to the four suspension points

EN
Warning Make sure that the ropes and/or chains form an angle
not more than 5° with vertical to the ceiling, that the
ropes do not cross, and that a different rope is used
for each hook.
Warning In case of installation in greenhouses, mechanical
ventilation shall be interlocked to the heater operation
or permanent openings shall be fixed for ventilation
air.
ELECTRICAL CONNECTIONS
Warning The equipment is fitted with a temporary power cable,
used for the final control test at factory.
Warning The temporary power cord must be removed and
replaced with a proper power cord whose type and
dimension shall be in accordance with national rules.
Warning The power line of the generator must feature an
earthlead and a residual current circuit breaker.
The supply cable must be connected to a switchboard
with sectioning switch.
Warning When installed, the appliance must be electrically
grounded in accordance with local codes, or in the
absence of local codes, with the National Electrical
Code, ANSI/NFPA 70, and/or the CSA C22.1, Canadian
Electrical Code, if an external electrical source is
utilized.
Only for 120 V models, the electrical power cable must be connected
in conformity to the polarity specified on the main terminal board of
the electrical panel: phase (L) and neutral (N).
Warning Only for 120 V models, if polarities L and N are
incorrect, the space heater may stop a few seconds
after it is switched on for the first time.
If any room thermostat or other accessories are connected to the
system (such as the timer for example) this must be done by
connecting the electrical cable to the thermostat plug (10):
• Take the plug (c) out of the power switchboard, open it and remove
the electrical jumper between terminals 2 and 3 of the plug;
• Connect the thermostat electrical cable to terminals 2 and 3 of the
thermostat plug (c);
• Close the plug again and plug it back into the power switchboard.
Having completed all these operations check carefully that all
electrical connections correspond to the wiring diagram. When the
heater is first turned on you must check that the fan does not use
more current than the maximum permitted limit.
GAS LINE CONNECTIONS
The connection to the gas feed pipe, whose sizes must correspond
to the kind of system to be made, must be carried out by placing the
“gas ramp” as indicated in Fig. 3: the gas pipe, the interception tap
and the anti-vibration joint are not supplied with the heater and they
must be arranged by the person in charge of installation.
1: filter-pressure regulator or filter
2: antivibration joint
3: manual shut-off valve
4: gas ramp Fig. 3
In case of connection of heater to natural gas, the installation shall
conform with local codes or, in the absence of local codes, with the
National Fuel Gas Code ANSI Z223.1/NFPA 54 and the Natural Gas
and Propane Installation Code, CSAB149.1.
In case of connection to a propane supply cylinder:
(a) the installation must conform with local codes or, in the
absence of local codes, with the Standard for the Storage and
Handling of Liquified Petroleum Gases, ANSI/NFPA 58 and the
Natural Gas and Propane Installation Code, CSA B149.1.
(b) to determine size and capacity of the cylinder(s) and for any
specific requirements consult your LP gas supplier. In any case
propane tank should not be lower than 100 lb (90 liters)
(c) the cylinder supply system shall be arranged to provide for
vapour withdrawal from the operating cylinder;
(d) the gas shall be turned off at the propane supply cylinder when
the heater is not in use;
(e) when the heater is to be stored indoors, the connection
between the propane supply cylinder and the heater must be
disconnected and the cylinders removed from the heater and
stored in accordance with Standard for the Storage and
Handling of Liquified Petroleum Gases, ANSI/NFPA 58 and
CSA B149.1, Natural Gas and Propane Installation Code.
The appliance and its individual shut-off valve must be
disconnected from the gas supply piping system during any pressure
testing of that system at test pressures in excess of 1/2 psi (3.5 kPa).
The appliance must be isolated from the gas supply piping system
by closing its individual manual shut-off valve during any pressure
testing of the gas supply piping system at test pressures equal or
less than 1/2 psi (3.5 kPa).
A minimum 1/8” NPT plugged tapping, accessible for test gauge
connection, must be installed immediately upstream of the gas
supply connection to the appliance.
NO

EN
I° STARTUP
The heater is supplied after a complete functional test and it’s
therefore prearranged for one of the gas (natural or L.P.G.) indicated
in Tab. I: an adhesive label applied close to the rating plate indicates
the working gas (usually it’s natural gas).
Should it necessary to change the kind of gas (from natural gas to
L.P.G or viceversa) follow the detailed instructions indicated in
section “CHANGING TYPE OF GAS”.
Only when the heater has been prearranged according to the
proper working gas it will be possible to carry out the following
operations:
• Leak away some gas from the feed pipe;
• Check that the pipe is gas proof;
• Open the gas stop on/off valve and start the hot air generator;
For installation in the U.S.A. at elevation above 2,000 feet (610 m),
the appliance shall be derated 4 per cent for each 1,000 feet (305 m)
of elevation above sea level.
For installation in Canada at elevation above 2,000 feet to 4,500
feet above sea level, the heater is deratedy reducing the input for the
appropriate fuel in accordance with the rating plate manifold
pressure.
Warning THE CONVERSION SHALL BE CARRIED OUT BY A
MANUFACTURER’S AUTHORIZED REPRESENTATIVE,
IN ACCORDANCE WITH THE REQUIREMENTS OF THE
MANUFACTURER, PROVINCIAL OR TERRITORIAL
AUTHORITIES HAVING JURISDICTION AND IN
ACCORDANCE WITH THE REQUIREMENTS OF THE
CAN/CGA-B149.1 OR CAN/CGAB149.2 INSTALLATION
CODES.
A conversion label shall be applied adiacent to the Rating Label:
THIS APPLIANCE HAS BEEN CONVERTED FOR USE
AT AN ALTITUDE OF ___________ FEET (ABOVE 2000 FEET)
Orifice size: ______________________________________
Manifold pressure: ______________________________________
Input rate: ______________________________________
Date of conversion: ______________________________________
Type of fuel: ______________________________________
Converted by: ______________________________________
For installation in Canada at elevation above 4,500 feet above sea
level, consult Provincial or Territorial Authorities having jurisdiction.
CHANGING TYPE OF GAS
This operation may be carried out several times during the working
life of the heater and not only at initial start-up.
First of all refer to Tab. I to identify the reference category for
natural gas or propane gas type. For each gas category the supply
pressure, the working pressure and the arrangement of the diffusion
ring (3) are stated.
To convert from natural gas to propane a transformation kit is
available with the unit, part no. 03AC534 for 250 kW and part no.
03AC535 for 400 kW.
Warning THE CONVERSION SHALL BE CARRIED OUT BY A
MANUFACTURER’S AUTHORIZED REPRESENTATIVE,
IN ACCORDANCE WITH THE REQUIREMENTS OF THE
MANUFACTURER.
After the conversion, a new conversion label shall be applied
adiacent to the rating Label.
OPERATING INSTRUCTIONS
Warning Any time the power cord of the heaters is connected to
a receptacle check the polarity of power supply:
•check switch (9) and (13) are on “0”
•connect plug to receptacle
•if lamp (14) lights up, then reverse polatiry
Warning If the correspondance of phase / neutral polarity is not
correct, the unit may stop in the reset mode.
HEATING MODE
Turning ON
• Make sure switch (9) is on “0”;
• Power the heater by means of the sectioning switch on the
switchboard;
• If the unit is operated manually (without any thermostat or any
other control device) turn the switch (9) to position “1”. The
burner starts up, the combustion chamber heats up and then the
fan starts;
• If the unit operates automatically (being connected to any
thermostat or any other control device) turn the switch (9) to
position “1” and set the room thermostat at the desired level: the
heater will now start and stop automatically.
• If after these operations, the generator does not work, refer to the
“FAULTS, CAUSES AND REMEDIES” paragraph and find the
cause.
Setting Post Ventilation Mode
By the switch (13) on control panel, select the post-ventilation
mode, that is the time the fan goes on blowing air when unit is
switched off:
• when switch (13) is on pos. “0” then postventilation lasts for 30
sec.
• when switch (13) is on pos. “1” then postventilation is continuous.
Turning OFF
In manual operation turn switch (9) to “0” or turn thermostat
control knob off.
After switching off the machine, a post ventilation function works
according to the previous setting.
Warning Finally, close the gas supply on/off valve, close the
shut-off valve (f) and turn off the sectioning switch
(Fig. 1-2).
VENTILATION MODE
To obtain the ventilation function only, make sure switch (9) is on
position “0” and then simply turn the switch (13) to position “1”. To
stop it, turn the switch (13) to position “O”.
Warning Whichever be the reason, the unit try to restart once.
If the cause of malfunction remain, the unit definitevely
stop and lamp (8) will light up
The heater can be restarted only by pressing the reset button (8).
Nonetheless, the cause that triggered the safety device should
always be carefully analyzed and resolved before restarting the
generator (cfr.“FAULTS, CAUSES AND REMEDIES”).
THIS APPLIANCE HAS BEEN SET BY MANUFACTURER
TO OPERATE WITH NATURAL GAS
CET APPAREIL A ETE REGLE PAR LE FABRICANT
POUR FONCTIONNER AVEC DU GAZ NATUREL
Supply pressure
Pression d'alimentation [in w.c.] 8“ – 10“
Orifice size
Gicleur [in]
DO NOT USE WITH PROPANE
PAS POUR L'USAGE DU GAZ PROPANE

EN
TRANSPORT AND HANDLING
Warning Before moving the unit:
• Stop the machine as indicated in the “STOP”
paragraph;
• Disengage the power supply by removing the plug
from the power socket;
• Fully unscrew the fitting connecting the gas hose
pipe to the heater;
• Wait for the heater to cool down.
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 combustuion chamber (front side) and clean carefully inside the
combustion chamber and the whole burner head and electrodes.
Warning After cleaning, the flame guard panel of combustion
chamber (4) must be put back in place and secured
with the relative screws before operate the heater.
Operating the heater without the flame guard panel of combustuion
chamber (4) can cause the flame to work with risk to the health of
exposed persons (because of formation of carbon monoxide, CO)
and constituting a danger for the environment.
TROUBLESHOOTING
In case of serious malfunction, the electronic equipment causes the
heater to go into safety stop, and lamp (8) lights with a steady red
light (stop light).
Warning In case of a safety stop, you have to push the reset
button (8) for 3 seconds to restart the heater.
Warning NEVER do more than two restarts in a row: unburned
fuel can accumulate in the combustion chamber and
suddenly flare up at the next restart.
In case of safety stop, press the reset button (8) for at least 12
seconds to launch a self-diagnosis programme, after which the
button will flash at different rates (Self-diagnosis lamp) according to
the type of safety intervention: the synoptic on the electrical panel
shows the possible types.
If the combustion chamber overheats, the safety thermostat (14) trips
to shut off the burner and lamp (8) lights: to reset the burner, you
have to shut off the heater completely, cut electrical power and push
button (14).
Warning You must always find the cause of the safety
intervention and remove it before pushing reset button
(8) or button (14) and restarting the heater.
If the heater is still not working properly, please contact your nearest
dealer or authorized Service Centre.

EN
If heater still not working properly, please revert to nearest authorized dealer.
FAULT CAUSE REMEDY
• The heater does not start:
lamp is off • No power supply
• Check functioning and position of switch
• Check the mains
• Check power connections
• Check the fuse
• Switch (9) in wrong position • Select correct position
• Defective room thermostat
• Check that thermostat connection plug is inserted
• Verificare il collegamento elettrico del termostato
• Check thermostat setting and correct it
• Check functioning of thermostat
• The heater does not start:
lamp is on
• Gas pressure switch tripped due to no gas or
insufficient pressure • Check that gas feed pipe has been bled • Check gas feed pressure
• The heater works erratically and the burner
goes on and off alternately: • Gas flow insufficient • Check and clean gas filter. • Clean and recalibrate the burner.
• The heater does not work:
lamp flashes
• Voltage control has tripped due to insufficient
electrical supply (V < 95V)
• The heater restarts automatically when sufficient voltage is
restored (V>95V)
• Check the power line if the heater starts and stops several times
• Check the power line if the heater does not start and remains in
safety stop
• The heater does not work:
Lamps and are on.
• Manual reset safety thermostat has tripped due
to excessive overheating of combustion
chamber
• Check that the fan motor starts correctly and is not obstructed
• Check that the fan motor is not burned out or that the motor
condenser is not broken
• Check burner calibration
• The heater does not work:
lamp is steady on
LAUNCH THE SELF-DIAGNOSIS PROCEDURE
PUSH BUTTON (8) FOR 12 SECONDS AND RELEASE:
THE BUTTON LAMP FLASHES WITH 2 TO 7 FLASHES
2 • No flame during ignition cycle
• Check gas pressure at burner
• Check and clean gas filter
• Check that ionisation probe is not discharging to earth
• Check ionisation probe connection cables (they must not
discharge to earth)
3 • Micro switch with blade has tripped (electrical
contact remained open) at start of ignition cycle • Check wire connection of pressure switch • Check pressure switch and replace if necessary
4 • Parasite flame detected in pre-wash phase
during ignition cycle
• Check that there is no remaining gas in the combustion chamber
• Check that ionisation probe is not discharging to earth
• Check ionisation probe connection cables (they must not
discharge to earth)
5 • Micro switch with blade has tripped (electrical
contact has opened) during ignition cycle
• Check wire connection of pressure switch
• Check that burner motor and fan are not blocked or broken;
replace if necessary
• Check that smoke exhaust chimney is not partially or totally
obstructed
• Check pressure switch and replace if necessary
6 • Micro switch with blade has tripped (electrical
contact has opened) during work cycle
• Check connection of pressure switch pipes
• Check that burner motor and fan are not blocked or broken;
replace if necessary
• Check that smoke exhaust chimney is not partially or totally
obstructed
• Check pressure switch and replace if necessary
Number of flashes of lamp (8)
7 • No flame during work cycle
• Check gas pressure at burner
• Check and clean gas filter
• Check that ionisation probe is not discharging to earth
• Check ionisation probe connection cables (they must not
discharge to earth)
• Dirt on fan blades • Remove dirt
• Fan is noisy or vibrates • Poor air circulation • Eliminate all obstacles to air flow
• Insufficient heating • Insufficient burner capacity • Contact Customer Service

WIRING DIAGRAM
AP CONTROL BOX
TA ROOM THERMOSTAT PLUG
ST ELECTRIC PILOT LAMP
FU FUSE
EV GAS TRAIN
CO CONDENSER
MV FAN MOTOR
FUA FUSE
RV HEATING SWITCH
IT TRANSFORMER H.V.
PA AIR PRESSURE SWITCH
EL IONISATION ELECTRODE
RV1 VENTILATION SWITCH
TS OVERHEAT THERMOSTAT
LL TÉMOIN BLOCAGE
RL REMOTE BLOCK INDICATOR LIGHT
LLI2 LAMPE TEMOIN SECURITE DE
SURCHAUFFE

WIRING DIAGRAM
ACCESSORIES

TECHNICAL SPECIFICATIONS GA/N 250C GA/N 400C
Supply pressure [in WC]
min 8" w.c.
max 10" w.c. min 8" w.c. max 10" w.c.
Ring nozzle [in] N. 16 holes x 0,102" N. 16 holes x 0,138"
Heat input [BTU/h] 250.000 400.000
Manifold pressure [in WC] 2,61 2,38
Normal
altitude 0 -
2,000 ft above
sea level
(U.S.A. and
Canada) Fuel consumption [CFH] 233,51 355,52
Heat input [BTU/h] 236.358 356.011
Manifold pressure [in WC] 2,11 2,14
Natural gas
Altitude 2,000
- 4,500 ft
above sea
level (Canada
only) Fuel consumption [CFH] 210,15 319,97
Supply pressure [in WC]
min 8" w.c.
max 13" w.c. min 8" w.c. max 13" w.c.
Ring nozzle [in] N. 12 holes x 0,079" N. 12 holes x 0,098"
Heat input [BTU/h] 250.000 400.000
Manifold pressure [in WC] 3,64 4,01
Normal
altitude 0 -
2,000 ft above
sea level
(U.S.A. and
Canada) Fuel consumption [CFH] 85,94 141,95
Heat input [BTU/h] 221.334 367.048
Manifold pressure [in WC] 2,95 3,61
L.P.G.
Altitude 2,000
- 4,500 ft
above sea
level (Canada
only) Fuel consumption [CFH] 77,35 127,76
Air flow [cfm] 2.766 4.120
Phase 1 1
Voltage [V] 120 120 208-230
Power supply
Frequency [Hz] 60 60
[W] 530 1000 1050
Electric consumption [A] 5,0 9,5 10-9,6
Gas inlet connection thread 3/4" NPT 3/4" NPT
Noise level at 1 m [dBA] 77 74
Dimensions, L x W x H [in] 45,1 x 23,2 x 17,4 46,7 x 26,9 x 21,1
Heater Weight [lb] 101 123
Biemmedue S.p.A.
Via Industria 12
12062 Cherasco (CN) – ITALIA
www.biemmedue.com – e-mail: [email protected]