BIEMMEDUE GA/N 250C User manual

NNAATTUURRAALL GGAASS // LLPPGG FFIIRREEDD HHEEAATTEERR
GGEENNEERRAATTEEUURR DD’’AAIIRR CCHHAAUUDD AAUU GGAASS NNAATTUURREELL//LL..PP..GG..
GA/N
GA/N
IINNSSTTRRUUCCTTIIOONN MMAANNUUAALL
MMAANNUUEELL DD’’IINNSSTTRRUUCCTTIIOONNSS
Ed. 12/10

2
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 pro-
perty 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, INHALATI N AND EXPL SI N HAZARD
Keep solid combustibles, such as building materials, paper or cardboard, at safe distance away from the heater as recom-
mended by the instructions.
Never use the heater in spaces which do or may contain volatile or airborne combustibles, or products such as gasoline, sol-
vents, 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 serivicing this equipment.
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 and
while in storage.
F R Y UR 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
F R Y UR SAFETY
Do not store or use gasoline or other flammable vapours and liquids in the vicinity of this ar any other appliance.
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.
Fort either indoor or outdoor use adequate ventilation must be provided.
Minimum clearance from combustible materials and propane containers: 15 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.

CONTROL PANEL - TABLEAU DE COMMANDE
Fig. 1
1 COMBUSTION CHAMBER
CHAMBRE DE COMBUSTION
2 BURNER
BRULEUR
3 DIFFUSION RING
BAGUE DIFFUSEUR
4SAFETY THERMOSTAT RESET
RÉARMEMENT DU THERMOSTAT DE SÉCURITÉ
5COOLING FAN
VENTILATEUR
6IONI ATION ELECTRODE
ELECTRODE D’IONISATION
7 IGNITION ELECTRODE
ELECTRODE ALLUMAGE
8CONTROL FLAME ELECTRONIC RESET WITH LAMP
REARMEMENT DE LA COFFRET ELECTRONIQUE
NIQUE AVEC LAMPE
9HEATING SWITCH
INTERRUPTEUR CHAUFFAGE
10 ROOM THERMOSTAT PLUG
PRISE THERMOSTAT D’AMBIANCE
11 CONTROL LAMP
LAMPE TEMOIN D’ALIMENTATION
12 CABLE FASTENER FOR POWER CORD
PRESSE ETOUPE POUR CABLE D’ALIMENTATION
13 CABLE FASTENER FOR REMOTE CONTROL KIT
PRESSE ETOUPE POUR KIT CONTROLE A DISTANCE
14 VENTILATION MODE SWITCH
INTERRUPTEUR VENTILATION
GAS TRAIN
Fig. 2
aMANUAL GAS SELECTOR VALVE
bBURNER PRESSURE PORT (MANIFOLD)
cGAS PRESSURE REGULATOR
GA/N 250 GA/N 400
dMAIN GAS VALVE
ePRESSURE PORT (GAS INLET)
3
a
b
c
d
e
a
b
d
c
0
I
0
I
56
15 1
89414
11
10
37
2
13 12

DDEESSCCRRIIPPTTIIOONN
The GA/N hot air generator is designed for heating medium and
large ventilated premises, for which a fixed or mobile heating system is
required.
GA/N heater is to be run on heating with natural gas or L.P.G. ac-
cording 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 (burner pressure) and
gas flow.
The GA/N 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 (a) indicates the se-
lected gas. To change the type of gas, follow the detailed instructions
indicated in section “C ANGING TYPE OF GAS”.
The GA/N 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 environ-
ment must be suitably ventilated in order to ensure adequate air circu-
lation.
In the event of serious malfunction various safety devices (electro-
nic 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 and the gas pressure swit-
ch will cut in if the gas supply pressure is too low. 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). Nonethe-
less, the cause that triggered the safety device should always be care-
fully analyzed and resolved before restarting the generator (cfr.
“FAULTS, CAUSES AND REMEDIES”).
GGEENNEERRAALL AADDVVIICCEE
Installation, setting and use of the heater must be effected in accor-
dance with the applicable regulations and laws relating to machine use.
The space heater can be installed suspended from the ceiling by
means of cables and/or chains of suitable size and length to fix to the 4
suspension hooks.
Warning
Make sure that the cables and/or chains form a maxi-
mum angle of 5° off vertical on the ceiling.
Warning
Check with your local fire safety authority if you have
questions about applications
ere 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 and rear (air inlet) of heater
0.7 m(2 feet) from ceiling
3 m (10 feet) on air outlet of heater.
• eater 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 GA/N 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 specifi-
cations 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 an-
nually 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
(“TEC NICAL SPECIFICATION TABLE”);
• to make sure that there is adequate 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 (“OB-
SERVED FAULTS, CAUSES AND REMEDIES”).
IINNSSTTAALLLLAATTIIOONN IINNSSTTRRUUCCTTIIOONNSS
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 or .2 Installation code.
An approved manual gas valve shall be provided by the installer.
ELECTRICAL C NNECTI NS
Warning
The equipment is fitted with a temporar power cable,
used for the final control test at factor .
Warning
the temporar power cord must be removed and replaced
with a proper power cord whose t pe and dimension
shall be in accordance with national rules.
Warning
The power line of the generator must feature an earth
lead and a residual current circuit breaker.
The supply cable must be connected to a switchboard
with sectioning switch.
Every heater is supplied along with the safety and control devices
which are indispensable to the correct functioning of the unit being al-
ready electrically connected.
Warning
Electrical grounding shall be in compliance with the Na-
tional Electrical Code ANSI/NFPA 70 or the CSA C22.1
Canadian Electrical Code, Part I.
The following operations must now be carried out:
• Plug in the power cord having read the rating plate that specify
electric supply characteristics.
• Connect accessories such as the room thermostat or clock to the
unit’s control panel with the thermostat receptacle.
aving completed all these operations check carefully that all elec-
trical connections correspond to the wiring diagram. When the heater
is first turned on you must check that the fan does not use more cur-
rent than the maximum permitted limit.
GAS LINE C NNECTI NS
The connection to the gas feed pipe, whose sizes must correspond
to the kind of system to be made, must be carried out
4
EN

1 Main gas pipe 3 Antivibrating coupling
2 Cut-off valve 4 Gas valves group
Fig. 3
by placing the “gas ramp” as indicated in Fig. 3: the gas pipe, the inter-
ception tap and the anti-vibration joint are not supplied with the heater
and they must be arranged by the person in charge of installation.
I° STARTUP
The GA/N heater is supplied after a complete functional test and
it’s therefore prearranged for one of the gas (natural or L.P.G.) indica-
ted in Tab. I: an adhesive label applied on the manual gas selector valve
(Fig. 4) 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 vice-
versa) follow the detailed instructions indicated in section “C ANGING
TYPE OF GAS”.
Only when the heater has been prearranged according to the pro-
per 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 stopcock and start the hot air generator;
These heaters may be used in the altitude range 0-4500ft (0-
1370m) without any change in adjustment. For higher altitude the hea-
ting power shall be reduced 4% every 1000 ft of altitude. Contact your
distributor for further information: a supplementary label shall be ap-
plied on the unit reporting the new adjustment.
CHANGING TYPE F GAS
This operation may be carried out several times during the working
life of the machine and not only at initial start-up. Therefore, first of all
check the adhesive label attached to the manual gas selector valve (a)
in Fig. (2) to establish the original category of the gas and then consult
Tab. I to identify the supply pressure, the working pressure, the use
conditions of manual valve.
To change kind of gas it is necessary (Fig. 2):
• to remove the sticker on the manual gas selector valve stating
the gas used at that time,
• to remove the screw under the sticker and turn the manual
handle on the correct side according to the condition described
in Tab.I and by following instruction:
Fig. 4
• After having moved the handle into the opposite position, put
again the fixing screw and a new sticker on it, stating the gas
which has to be used (a number of different stickers are supplied
with the machine)
Warning
Burner pressure shall not be adjusted: the heater is ready
to run on the new gas
Should it necessary to check the burner pressure:
• connect a manometer to the pressure port (b) ,
• carry out the pressure reading on the manometer and turn the
pressure regulator (c) if necessary to obtain the correct burner
pressure value indicated in Tab. I
OOPPEERRAATTIINNGG IINNSSTTRRUUCCTTIIOONNSS
HEATING M DE
Turning ON
• Make sure switch (9) is on “0”;
• Power the heater by means of the sectioning switch on the swit-
chboard;
• 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 ther-
mostat or any other control device) turn the switch (9) to posi-
tion “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 (14) 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 (14) is on pos. “0” then postventilation lasts for 30
sec.
• when switch (14) is on pos. “1” then postventilation is conti-
nuous.
Turning OFF
In manual operation turn switch (9) to “0” or turn thermostat con-
trol knob off.
After switching off the machine, a post ventilation function works
according to the previous setting.
Warning
Finally, close the gas supply stopcock and turn off the
sectioning switch (Fig. 1).
VENTILATI N M DE
To obtain the ventilation function only, make sure switch (9) is on
position “0” and then simply turn the switch (14) to position “1”. To
stop it, turn the switch “4” to position “O”.
TTRRAANNSSPPOORRTT AANNDD HHAANNDDLLIINNGG
The heater can be raised and hung up using the four anchor holes
on the casing.
Warning
Before moving the unit:
• Stop the machine as indicated in the “ST P” para-
graph;
• 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.
MMAAIINNTTEENNAANNCCEE
To regulate operation of the unit, the fans, combustion chamber,
the burner must be at least annually inspected and periodically cleaned
by a qualified serivce person.
Warning
Before performing any maintenance operation:
• Stop the machine as indicated in the “ST P” para-
graph;
• Disengage the power supply by removing the plug from
the power socket;
• Close the gas supply stopcock;
• Wait for the heater to cool down.
During cleaning any foreign bodies must be removed from the fan
suction grille.
Warning
Do not direct jets of compressed air towards the air pres-
sure points near the main fan: the air pressure switch
could be permanently damaged.
5
EN

OOBBSSEERRVVEEDD FFAAUULLTTSS,, CCAAUUSSEESS AANNDD RREEMMEEDDIIEESS
FAULTS CAUSES REMEDIES
• Check power specifications
• Check power connections
• Check fuse integrity
• Main switch in wrong position • Select correct position
• Check thermostat position
• Check thermostat operation
• Safety device (control unit, safety thermostat, etc.)
•not reset after a repair • Press button (9) on the control panel
• The duct gives too much back pressure and
•airpressure switch PA1 blocks the heater
• Reduce back pressure by straightening the duct
•or by reducing duct length
• Make sure the gas supply hose has been bled
• Check gas supply pressure
• Make sure the suction and feed grilles are
•not blocked
• Make sure the fan is turning properly
• Check the electric motor and capacitor and,
•if these are faulty, replace
• The flame sensor is not operating correctly • Remove the flame sensor and clean
• Makes sure the suction and feed grilles
•are not blocked
• Make sure the environment is well ventilated
• Make sure the warm air can exit freely
• Make sure the flow and pressure of the gas
•are not too high
• Control unit trips due to irregular operation
•of burner • Contact After-Sales Service
• Faulty gas pressure switch • Check the pressure switch and, if necessary,
•replace
• Faulty pressure-switch PA • Check the pressure-switch and, if necessary,
•replace
• Faulty electronic control unit • Check the unit and, if necessary, replace
• Faulty thermostat • Check the thermostat and, if necessary, replace
• Foreign bodies on fan blades • Remove foreign bodies
• Little air circulation • Eliminate and obstacles to proper air flow
• Fan noise or vibrations
• Gas pressure switch trips due to interruption of
•gas flow (gas pressure switch electric contact
•does not close during operation)
• The safety thermostat trips due to overheating of
•the combustion chamber (the thermostat electrical
•contact does not close during operation)
• The generator fails to start
• No power supply
• Faulty operation of room thermostat
• Pressure switch PA intervention for fan malfuction
• The generator stops and the indicator light (9)
•comes on
6

WWIIRRIINNGG DDIIAAGGRRAAMM
7
AP CONTROL BOX
FU FUSE
EL IONIZATION ELECTRODE
FUA FUSE
LI POVER EAT T EMOSTAT
PA PRESSURE SWITC 20 Pa
RE2 DELAY STARTING RELAY (opt.)
TA ROOM T ERMOSTAT PLUG
IT TRANSFORMER .T.
C CAPACITOR
RV EATING SWITC
RE MOTOR RELAY
ST CONTROL LAMP
EV GAS TRAIN
MV COOLING MOTOR
RV1 VENTILATION MODE SWITC
RE1 POST-VENTILATION RELAY
RANTIMOISTURE RESISTANCE (opt.)
16A >> GAN 250
20A >> GAN 400

8
Tab. I
GA/N 250C GA/N 400C
Heat input [BTU/h] 264.686 402.767
Supply pressure [in WC] min 7" w.c.
max 10" w.c.
min 7" w.c.
max 10" w.c.
Burner pressure [in WC] 4,24 4,80
Fuel consumption [CFH] 252,113 381,348
Position of gas selector
valve
Heat input [BTU/h] 233.040 399.892
Supply pressure [in WC] min 8" w.c.
max 13" w.c.
min 8" w.c.
max 13" w.c.
Burner pressure [in WC] 4,00 4,88
Fuel consumption [CFH] 86,861 148,301
Position of gas selector
valve
[cfm] 2.766 4.120
Phase 1 1
Voltage [V] 120 120
Frequency [Hz] 60 60
[W] 500 940
[A] 5,0 8,7
[in] N. 16 holes x 0,079" N. 16 holes x 0,102"
3/4" NPT 3/4" NPT
Noise level at 1 m [dBA] 77 74
Dimensions, L x W x H [in] 45.1 x 23.2x17.4 46.7 x 26.9x21.1
Weight [lb] 101 123
Dimensions, L x W x H [in] 46.9 x 26.0 x 24.57 48.8 x 29.5x28.3
Weight [lb] 134 163
Packaging
TECHNICAL SPECIFICATIONS
Electric consumption
Power supply
Base unit
Ring nozzle
Gas inlet connection thread
Air flow
Natural gas
L.P.G.
BIEMMEDUE S.p.A.
Via Industria, 12
12062 Cherasco (CN) - ITALIA
Tel. [phone] - Fax [phone]
www.biemmedue.com - e-mail: [email protected]