Flagro F-400T Instruction Manual

OPERATING INSTRUCTIONS MANUAL
(Please retain for future reference)
For
F-400T DUAL FUEL CONSTRUCTION HEATER
CERTIFIED FOR USE IN CANADA AND U.S.A.
As per Standard ANSI Z83.7 2000/
CSA 2.14 2000 Gas Fired Construction Heaters Unvented/Unattended Type.
FLAGRO INDUSTRIES LIMITED
ST. CATHARNIES, ONTARIO
CANADA

GENERAL HAZARD WARNING:
FAILURE TO COMPLY WITH THE PRECAUTIONS AND INSTRUCTIONS PROVIDED
WITH THIS HEATER, CAN RESULT IN DEATH, SERIOUS BODILY 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
INSTRUCTIONS MANUAL, LABELS, ETC. CONTACT THE MANUFACTURER.
WARNING:
FIRE, BURN, INHALATION, AND EXPLOSION HAZARD. KEEP SOLID
COMBUSTIBLES, SUCH AS BUILDING MATERIALS, PAPER OR CARDBOARD, A
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.
WARNING:
INTENDED USE IS PRIMARILY THE TEMPORARY HEATING OF BUILDINGS
UNDER CONSTRUCTION, ALTERATION, REPAIR OR EMERGENCIES ONLY.
ALWAYS PROVIDE ADEQUATE VENTILATION. 1 SQ. IN. OF FRESH AIR MUST
BE SUPPLIED FOR EVERY 1000 BTUH OF HEAT.
THIS HEATER SHALL BE INSTALLED SUCH THAT IT IS NOT DIRECTLY
EXPOSED TO WATER SPRAY, RAIN AND/OR DRIPPING WATER.

This heater is designed and approved for use as a
construction heater under ANSI Z83.7 2000 and
CSA 2.14 2000 Gas Fired Construction Heaters
We cannot anticipate every use which may be made
of our heaters. CHECK WITH YOU 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.
SPECIFICATIONS
Model Number - F-400T
Input - 400,000 btuh
Fuel - Natural Gas or Propane
Inlet Pressure - Natural Gas: 3.5” W.C.
- Propane: 11” W.C.
Ignition - Direct Spark Ignition
- Thermostat Control
Air Circulation - 2000 cfm
Fuel Consumption - 18.5 lbs/hr
- 380 cfh
Approved - cULus listed

INSTALLATION:
The installation of this heater for use with natural gas shall conform with local codes or,
in the absence of codes, with the National Fuel Gas Code ANSI Z223.1/NFPA 54 and
the Natural Gas and Propane Installation Code, CSA B149.1.
The installation of this heater for use with propane tank or cylinder shall conform with
Local codes or, in the absence of local codes, with the Standard for the Storage and
Handling of Liquefied Petroleum Gases, ANSI/NFPA 58 and the Natural Gas and
Propane Installation Code, CSA B149.
This heater must be located at least 10ft (3m) from any propane gas cylinder. This
heater shall not be directed toward any propane gas container within 20ft (6m).
CLEARANCE TO COMBUSTIBLES:
F-400T TOP: 5 ft FRONT: 8 ft SIDES: 2 ft REAR: 1 ft
CONNECTING THE CYLINDER:
If cylinders are used to supply the heater, no cylinders smaller than 100lb capacity shall
be used. These cylinders must supply a vapor withdrawal only.
1. All cylinder connections must be made using a wrench to tighten the POL
fitting.
2. Be sure that the cylinder valve is in the closed position when connection
or disconnecting the cylinder.
3. A soap and water solution must be applied to all connections in order to leak
check the system.
The gas must be turned off at the propane supply cylinder(s) when the heater is not in
use. When the heater is to be stored indoors, the connection between the propane
supply cylinder(s) and the heater must be disconnected and the cylinders removed from
the heater and stored in accordance with Standard for the Storage and Handling or
Liquefied Petroleum Gases, ANSI/NFPA 58 and CSA B149.1, Natural Gas and Propane
Installation Code.
PIPING: This heater must be installed by a qualified gas technician following
local codes published by the authority having jurisdiction. Sizing of
supply piping must be determined using the length of pipe run as
well as total btuh rating of the appliance(s). Appropriate piping
tables must be used to determine size of supply piping dependant
on the length of run from source.

PRESSURES: MAXIMUM INLET PRESSURES: LP: 14.0 IN. WC.
NG: 14.0 IN. WC.
MINIMUM INLET PRESSURES: LP: 11.0 IN. WC.
NG: 3.5 IN. WC.
This heater must be supplied by pressures indicated on the
approval label. Over pressure may cause controls to fail.
DO NOT supply this unit with more than ½ psig (14.0 in. W.C.)
Note: A second stage regulator must be installed if the supply
pressure exceeds ½ psig.
FUEL: This heater will operate on propane or natural gas. The manifold
pressures are listed on the approval label. Ensure that the proper
pressure settings are achieved depending on the fuel being used.
A fuel selector valve is located on the manifold of the heater.
Ensure that this valve is in the proper position depending on the
fuel being used. DO NOT operate the heater with the valve in the
incorrect position.
HOSES: All hoses used to connect this heater of fuel supply must be Type 1
approved propane / natural gas hose assemblies.
ELECTRICAL: WARNING
Electrical Grounding Instructions
This appliance is equipped with a three-prong (grounding) plug for
your protection against shock hazard and should be plugged
directly into a properly grounded three-prong receptacle.
120v supply must be available. Please note that the motor on this
unit requires 15 amps. Ensure appropriate gauge extension cord is
used.

MAINTENANCE:
1. Every construction heater should be inspected before each use, and at least
annually by a qualified service person.
2. The hose assembly shall be visually inspected 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. The replacement hose
assembly shall be that specified by the manufacturer.
3. The appliance must be kept clear and free from combustible materials, gasoline
and other flammable vapors and liquids.
4. The flow of combustion and ventilation air must not be obstructed. Be sure to
check the fan assembly and ensure that the motor and blade are operating
properly.
5. Compressed air should be used to keep components free of dust and dirt build
up. Note: Do not use the compressed air inside any piping or regulator
components.

F-400T START UP INSTRUCTIONS:
1. Set fuel selector valve according to gas supply
to be used
2. Connect construction heater to gas supply with
approved hose assembly.
3. Plug the electrical cord into a 15 amp supply.
4. Open all gas supply valves.
5. Depress the main switch to the “START” position.
The fan will start and the burner should ignite.
6. Set the Thermostat to the desired temperature.
7. If heater fails to ignite after 3 attempts call your
supplier for service.
TO SHUT DOWN:
1. Close the main gas supply valve while the heater
is operating.
2. Move the main switch to the "OFF" position.
3. Disconnect the heater from gas supply.

F-400T TROUBLESHOOTING ANALYSIS:
PROBLEM: HEATER WILL NOT LIGHT
POSSIBLE CAUSE:
Air switch improperly set.
REMEDY:
Use centre adjusting screw to set
air switch.
Turn clockwise to increase sensitivity,
turn counter clockwise to decrease
sensitivity.
POSSIBLE CAUSE:
Blockage in copper inlet tubes.
REMEDY:
Disconnect tubes from air switch. Use
high pressure air to clean any debris
that my block the airflow.
POSSIBLE CAUSE:
Faulty Switch.
REMEDY:
Replace Switch.
POSSIBLE CAUSE:
Rear of heater blocked.
REMEDY:
Ensure rear of heater is unobstructed
and proper rear clearances are
maintained. (see approval label)

POSSIBLE CAUSE:
Faulty Solenoid.
REMEDY:
Ensure solenoid is energized.
(use volt meter)
Ensure plunger in the solenoid is being
activated. (use manometer at test point
after solenoid)
(use volt meter)
POSSIBLE CAUSE:
Incorrect Gas Supply.
REMEDY:
Ensure required gas supply pressures
are supplied to the heater.
(see approval label)
POSSIBLE CAUSE:
Spark Plug.
REMEDY:
Ensure gap in spark plug is approx. 3/16".
Check spark plug wire connections.
Ensure spark plug has good spark.
Replace spark plug if necessary.
POSSIBLE CAUSE:
Ignition Board
REMEDY:
Ensure electrical signals for both spark
plug and solenoid are present.
(use volt meter)
Ensure ignition board is properly
grounded.
POSSIBLE CAUSE:
Thermostat.
REMEDY:
Ensure the thermostat is calling
for heat.

PROBLEM: HEATER WILL NOT REMAIN LIT AFTER START UP
POSSIBLE CAUSE:
Faulty flamerod wire.
REMEDY:
Check flamerod wire for any damage.
POSSIBLE CAUSE:
Faulty flamerod
REMEDY:
Ensure connections are secure.
Replace flamerod if necessary.
POSSIBLE CAUSE:
Ignition Board
REMEDY:
Check ground wire for proper
connection.
Check polarity of extension cord
compared to polarity of plug on heater.
Replace faulty ignition board.
POSSIBLE CAUSE:
Thermostat
REMEDY:
Ensure the thermostat is calling for heat.
POSSIBLE CAUSE:
Electrical - All components
REMEDY:
Before replacing an component, all connections must be checked to
ensure electrical circuit is complete. (Use volt meter and refer to
enclosed wiring diagram)
POSSIBLE CAUSE:
Pipe Fittings
REMEDY:
When loosened, tightened or replaced, the complete fitting should be
removed and approved pipe sealant applied to all male threads before
reconnection.
After a heater is serviced, the valve train should be checked for leaks
with a soap and water solution or approved leak detector solution.

F-400T – PARTS LIST
1/3 HP MOTOR
S-400
HIGH LIMIT
S-410 (250F)
¾” SOLENOID VALVE
S-404A
FUEL SELECTOR VALVE
S-403
IGNITOR
S-408A
FAN BLADE
S-401
PRESSURE ADJUSTMENT
CAP FOR S-402 REG
S-402C
REGULATOR (1/2 PSI)
S-402
S.S. FILTER SCREEN
S-402FS
SOLENOID VALVE COVER
200871-002
FLAME ROD
S-406A
FLAME ROD WIRE
S-407A
IGNITOR WIRE
S-1009A
OFF-RUN-START
SWITCH
S-411
BURNER
S-405

F-400T – PARTS LIST
WIRING HARNESS
S-415W
IGNITION BOARD
S-415P
MAIN RELAY
S-412
AIR PROVEN SWITCH
S-414
THERMOSTAT
S-416
FRONT LEG
S-418
REAR SCREEN
S-419
6” RUBBER WHEELS
S-420
¾” PIPE CLAMP
S-423
AIR SENSING TUBES
S-427
POWER CORD
S-431
WHEEL KIT
WK-400

PARTS LIST FOR F-400T
Part Number Part Description
S-400 1/3 HP MOTOR
S-401 FAN BLADE
S-402 REGULATOR (1/2 pis)
S-402FS S.S. FILTER SCREEN
S-403 FUEL SELECTOR VALVE
S-404A SOLENOID VALVE- 120V (CURRENT)
S-405 BURNER
S-406A FLAME ROD
S-407A FLAME ROD WIRE
S-408A LONG REACH IGNITER
S-1009A IGNITION WIRE
S-410 HIGH TEMPERATURE LIMIT
S-411 OFF-RUN - START SWITCH
S-412 MAIN RELAY
S-414 AIR PROVING SWITCH
S-415P POTTED IGNITION CONTROL 120V (2002 TO CURRENT)
S-416 THERMOSTAT
WK-400 WHEEL KIT
S-418 FRONT LEGS
S-419 SCREEN
S-420 RUBBER WHEEL - 6"
S-420A GROMMET
S-423 3/4" PIPE CLAMP
S-427 AIR SENSING TUBES (PACK OF 2)
S-431 ELECTRICAL CORD
ACCESSORIES
B42R0.75 3/4" SECOND STAGE REGULATOR VENTED (MAX 10 PSI INLET)
260SDOPCO 3/4" 260 BD VENTLESS REGULATOR (MAX 10 PSI INLET)
325-5AL600 LINE REGULATOR C/W OPD (MAX 5PSI INLET)
S52180-12 3/4 ID MP X MP 15-FT HOSE ASSEMBLY

TITLE: DWG. NO.
V1 L1 V2 L2 S1 GND
IGN
SOLENOID VALVE
THERMOSTAT
MOMENTARY ON
COIL
HIGH LIMIT
AIR SWITCH
GROUND
L2
L1
ON/OFF RELAY
120 VOLT GND FAN MOTOR
FLAME ROD
SPARK PLUG
FENWAL IGNITION BOARD
GROUND
F-400T WIRING DIAGRAM 2010 400T-202
F-400T WIRING DIAGRAM 2010
Note: If any of the origional wire as supplied with the appliance must be replaced it must be replaced with type 14g TEW wire or its equivalent
FLAGRO INDUSTRIES LIMITED
(POTTED CONTROL)
BROWN BLACK YELLOW WHITE WHITE / BLACK STRIPE PURPLE
RED