Bromic Heating HEAT-FLO HF15 Troubleshooting guide

Version 5.0 AUS
LPG / ULPG MOBILE INDUSTRIAL DIRECT
FIRED AIR HEATER
BY BROMIC
INSTALLATION, INSTRUCTION AND
SERVICE MANUAL
MODELS:
HF15 / HF20 / HF30 / HF50
IMPORTANT: This heater should be installed and
operated in accordance to the manufacturers
instructions outlined within this manual. The user
shall ensure that local gas fitting regulations,
municipal building codes, AS/NZS 1596 and
other relevant statutory regulations are adhered
to. Use appliance only in a well-ventilated
space. Read and understand this manual before
attempting to assemble, operate and service the
appliance. Keep this manual for future reference.
WARNING: THIS HEATER IS APPROVED FOR
INDUSTRIAL USE ONLY

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Head Oce: 10 Phiney Place, Ingleburn, NSW 2565 Australia
Telephone: [phone] (within Australia) or [phone] (from overseas) Fax: [phone]
Email: [e-mail] Web: www.bromicplumbing.com
IMPORTANT
Note: Bromic Plumbing Pty Ltd reserves the right to make changes to specifications, parts, components and equipment
without prior notification. This Installation, operation and service manual may not be reproduced in any form without prior
written consent from Bromic Plumbing Pty Ltd.
This manual contains important information about the assembly, operation, and
maintenance of Blow Heaters. Please pay close attention to the important safety
information shown throughout this instruction manual. Any safety information will be
accompanied by the following safety alert symbols:
DANGER, WARNING, IMPORTANT
WARNING: THIS HEATER IS APPROVED FOR INDUSTRIAL
USE ONLY
DO NOT SPRAY AEROSOLS IN THE VICINITY OF THIS
APPLIANCE WHILE IT IS IN OPERATION
DO NOT USE OR STORE FLAMMABLE MATERIALS IN OR
NEAR THIS APPLIANCE
DO NOT PLACE ARTICLES ON OR AGAINST THIS APPLIANCE
DO NOT MODIFY THIS APPLIANCE

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CONTENTS
GENERAL HAZARD WARNING 4
WHEELS ASSEMBLY (FOR HF30/50 ONLY) 4
VENTILATION 4
OXYGEN DEPLETION 4
CARBON MONOXIDE (CO) POISONING 4
GUIDELINES OF FUEL GASES 5
OPERATING INSTRUCTIONS 5
START-UP OPERATION 6
SWITCHING OFF THE HEATER 6
EMERGENCY SHUTDOWN 6
SPECIFICATIONS 7
TROUBLE SHOOTING 8
MAINTENANCE AND STORAGE 9
SERVICING INSTRUCTIONS FOR QUALIFIED TECHNICIANS 9
ELECTRICAL COMPONENT SERVICE 9
GAS COMPONENT SERVICE 9
BURNER SERVICE 9
ILLUSTRATED PARTS BREAKDOWN AND PARTS LIST 10
ELECTRICAL SCHEMATIC 12

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GENERAL HAZARD WARNING:
IMPORTANT SAFETY
INSTRUCTIONS
READ THIS MANUAL CAREFULLY BEFORE
INSTALLING OR SERVICING THIS PRODUCT.
IMPROPER INSTALLATION, OPERATION, OR
MAINTENANCE CAN RESULT IN DEATH, SEVERE
INJURY OR PROPERTY DAMAGE.
INSTALLATION MUST BE CARRIED OUT BY AN
AUTHORISED PERSON/S IN ACCORDANCE WITH
AS/NZS 1596 THE STORAGE AND HANDLING OF
LP GAS.
CHECK WITH YOUR LOCAL FIRE SAFETY AUTHORITY,
IF YOU HAVE QUESTIONS ABOUT APPLICATIONS.
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
instructions manual, labels, etc. Please contact the
manufacturer.
IMPORTANT:
• This product is not for domestic use! Use only in
open buildings and please abide by the relevant
national and local guidelines and regulations!
• This appliance is not to be installed to fixed
consumer piping
WARNING:
• Fire, burn, inhalation and explosion hazard. Keep
solid combustibles such as building materials,
paper or cardboard, a safe distance away from
the heater. Never use the heater in spaces which
do or may contain volatile or airborne combustible
particles, or products such as gasoline, solvents,
paint thinners, dust particles or unknown chemicals.
WHEELS ASSEMBLY (FOR HF30/HF50 ONLY):
• Remove the heater from the carton box and remove
any Styrofoam transit protection and plastic packaging.
• Place the heater on its side and retrieve the packaging
containing wheels and associated fasteners.
• Place the wheel on the axle and slide it on until it
contacts the rear stop.
• Place a washer on the exposed threaded portion of
the axle.
• Place the securing nut onto the threaded portion of
the axle and rotate clockwise until wheel just freely
rotates.
• Repeat steps 1-5 above for opposite axle and wheel
assembly
VENTILATION:
• OXYGEN DEPLETION - The combustion of propane
and ULPG requires an adequate supply of oxygen.
The appliance shall be operated in a space (measured
in cubic meters), of minimum 5 times the rated gas
consumption of the appliance (in MJ/h). The user shall
ensure that when the appliance is in use, a permanent
opening to the outside air is available for adequate
ventilation. Never use the appliance in an enclosed
space.
• CARBON MONOXIDE (CO) POISONING - Even though
the direct-fired system of this heater operates very close
to 100% combustion eciency, it may still generate
small amounts of CO. Some people are more aected
by CO than others. The symptoms of CO eects are
headache, dizziness, burning eyes and nose, nausea,
dry mouth or sore throat, etc. Be sure to follow strict
advice about ventilation.
• Never block the air inlet (rear) or air outlet (front) of
the heater.
• Be sure to let the fan operate for at least 30 seconds
before igniting the heater and a minimum of 2 minutes
after the burner has stopped.
• Ventilation to the outside air must be provided at all
times whilst operating the heater.
WARNING: USE ONLY IN A
WELL VENTILATED SPACE
CAUTION: Equipment must be grounded.
CAUTION: Hazard of electric shock.
CAUTION: Not for use with ductwork.
CAUTION: Heater should be properly
installed such that it is not directly exposed
to water spray, rain and/or dripping water

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GUIDELINES OF FUEL GASES:
• This heater is intended for the use of temporary heating
of buildings under construction, alteration or repair.
There may be other local standards or regulations
governing the use of fuel gases and heating products,
of which the user should consult their local authority
for advice.
• Propane and Butane belong to odourless fuel gases.
Normally gas suppliers will add an odour-making
agent to help you to detect a gas leakage. However,
the added odour can diminish over time. Fuel gases
maybe present even though no odour exists.
• Installation and storage of gas cylinders must be in
accordance with local regulations and AS/NZS 1596.
• To check the leakage of Propane/Butane, please use a
professional gas-leakage detector or with a soap and
water solution. Never check for gas leaks with a flame!
• Propane and butane are heavier than air. This appliance
should only be used in above ground situations with
adequate natural ventilation, no stagnant areas and
where gas leakage and products of combustion are
rapidly dispersed by wind and/or natural convection.
Do not operate this heater in basement areas and
below ground.
• Always maintain proper clearances from
combustible material. A minimum clearance of
2.5meters from the heater outlet and 1.25 meters
from the top, sides and inlet should be observed.
Never operate the appliance on elevated structures
such as platforms or scaolds.
• Install the heater such that it is not directly exposed
to water spray or rain.
OPERATING INSTRUCTIONS:
Operator controls - Automatic model (HF30/HF50) Operator controls - Manual piezo model (HF15/HF20)
PRE-START CHECKS AND WARNINGS:
• 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 and of a certified
approved type.
• The installation must conform with local codes, with
location of and/or alternative locations of gas inlet
connections to be as detailed in AS/NZS 1596, for
pipe sizing and installation details.
• The heater must be located at least 1.5m from any
propane gas cylinder.
• The heater discharge shall not be directed towards
any ULP (Propane / Butane) gas container within
6m
• The capacity of cylinder(s) to be used should be a
minimum of 45kg.
• The cylinder supply system shall be arranged to
provide for vapour withdrawal from the operating
cylinder only.
• When the heater is not in use, the gas must be
turned o at the propane supply cylinder(s).
• This appliance is NOT intended to be operated
on recreational vehicles and/or boats/marine
environments.
• When the heater is to be stored indoors, the
connection between the propane supply

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OPERATING INSTRUCTIONS CONTINUED...
SWITCHING OFF THE HEATER
(NORMAL SHUT-DOWN)
• To switch o the heater, always close the gas cylinder
valve first.
• Allow the fan motor to continue to run for at least 2
minutes, so as to allow the heater to suciently cool
down.
• Switch o the motor, unplug the power cord.
• If the heater will not be used again for a short period,
disconnect the gas hose from the heater first, then
disconnect the hose and regulator from the valve on the
gas cylinder.
WARNING: Be sure that the valve on the gas cylinder
has been shut o firmly before disconnection! When
changing cylinder(s), be sure that the surrounding
atmosphere is free from any potential ignition sources.
Should there be any gas leakage during operation,
close the valve on the gas cylinder immediately,
open all windows and doors to dissipate any gas with
natural ventilation.
IMPORTANT: The minimum period between
every repeat operation should be not less than
3 minutes!
EMERGENCY SHUTDOWN
• Turn o the power switch on the heater body
• Shut o the gas supply to the gas cylinder
• Shut o the gas valve on the heater body
• Remove the electric plug from the mains electric supply
• Do not operate heater until the cause of the emergency
shutdown has been identified and remedied
cylinder(s) and the heater must be disconnected
and the cylinders removed from the heater.
• Check the heater thoroughly for damage. Never
operate a damaged heater. This includes damaged
gas hose and electrical cord.
• Be sure the heating area is adequately ventilated,
free of moisture and dust and far away from any
combustible material.
• Place the gas cylinder (for a detail specification,
contact your gas supplier) behind the heater. Never
place the gas cylinder in front of an operational
heater.
• Check firstly the outlet pressure of the gas regulator
and gas hose according to the specification on the
appliance name-plate. Do not install a kinked gas
hose.
• Screw-fasten the gas hose with regulator to the left
had thread, POL type, gas cylinder valve. Ensure the
connection is gas tight.
• Screw-fasten the gas hose to the industrial blow
heater gas inlet connector, located at the inlet side of
the appliance. Note that this is a left hand threaded
connection. Ensure the connection is gas tight.
• Check the gas connections and turn on the gas
supply valve. Test the connections for leaks with a
soap water solution or leak testing kit. Never check
for leaks with a flame.
• Plug in the extension cord to a wall socket (10Amp).
• Open the gas valve on the cylinder slowly. Be sure
there is no gas leakage.
• Press the ON-OFF switch. The heater should
begin a start sequence and the fan should operate
approximately 10 seconds form switching the unit
on. The unit will automatically open the gas valves
and initiate an ignition sequence. The heater should
now be operating automatically.
• After the burner ignites, the heater will continue to
operate. The user may adjust the room temperature
control dial to set the desired room temperature.
MANUAL PIEZO MODELS
(HF15/HF20)
• Check the heater thoroughly for damage. Never
operate a damaged heater. This includes damaged
gas hose and electrical cord.
• Be sure the heating area is adequately ventilated,
free of moisture and dust and far away from any
combustible material.
• Place the gas cylinder (for a detail specification,
contact your gas supplier) behind the heater. Never
place the gas cylinder in front of an operational
heater.
• Check firstly the outlet pressure of the gas regulator
and gas hose according to the specification on the
appliance name-plate. Do not install a kinked gas
hose.
• Screw-fasten the gas hose with regulator to the left
had thread, POL type, gas cylinder valve. Ensure the
connection is gas tight.
• Screw-fasten the gas hose to the industrial blow
heater gas inlet connector, located at the inlet side of
the appliance. Note that this is a left hand threaded
connection. Ensure the connection is gas tight.
• Check the gas connections and turn on the gas
supply valve. Test the connections for leaks with a
soap water solution or leak testing kit. Never check
for leaks with a flame.
• Plug in the extension cord to a wall socket (10Amp).
• Press the ON-OFF switch. Let the fan motor run for
at least 30 seconds to check if the fan works properly
and/or to purge any remaining fuel gas.
• Open the gas valve on the cylinder slowly. Be sure
there is no gas leakage.
• After ensuring fan operation, push in and hold the
automatic gas control valve button. Simultaneously,
push the piezo-ignitor button repeatedly until the
burner ignites.
• After the burner ignites, keep the gas valve button
depressed for at least 5 seconds, then release. The
heater will continue to operate.
AUTOMATIC MODELS (HF30/HF50)

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SPECIFICATIONS
For exact appliance specification, please refer to data plate axed to appliance at the intake side of
blow heater.
*specified rating based on theoretical calculation and is therefore approximate.
Model HF 15 HF 20 HF 30 HF 50
Maximum Heat Output *54 MJ/h *72 MJ/h *108 MJ/h *170 MJ/h
Gas Consumption 1.08 KG/H 1.44 KG/H 2.16 KG/H 3.4 KG/H
Burner type Single gas burner Single gas burner Single gas burner Single gas burner
Ignition Type Push button piezo Push button piezo PCB controlled
Automatic ignition PCB controlled Automatic ignition
Air Flow 500 m³/h 500 m³/h 1000 m³/h 1000 m³/h
Gas Type Propane (LPG) and
Universal (ULPG) gas only
Propane (LPG) and
Universal (ULPG) gas only
Propane (LPG) and
Universal (ULPG) gas only
Propane (LPG) and
Universal (ULPG) gas only
Gas Inlet Connection ¼” G – Left hand
thread
¼” G – Left hand
thread
¼” G – Left hand
thread
¼” G – Left hand
thread
Injector Size 0.95 mm 1.15 mm 1.10 mm 1.55 mm
Dimensions (L x W x H) 520mm x 270mm
x 450mm
520mm x 270mm
x 450mm
645mm x 340mm
x 500mm
740mm x 340mm
x 500mm
Unit Weight 8.95kg 8.95kg 14.8kg 16.1kg
Operating Pressure 70 kPa 70 kPa 150 kPa 150 kPa
Limit Thermostat Setting 100°C ± 5° 100°C ± 5° 100°C ± 5° 100°C ± 5°
Minimum Room Volume 270m³ 360m³ 540m³ 900m³
IP Class IP 44 IP 44 IP 44 IP 44
Electrical 230-240V/ 1φ/ 50Hz 230-240V/ 1φ/ 50Hz 230-240V/ 1φ/ 50Hz 230-240V/ 1φ/ 50Hz
Motor Rating 28W / 1430 rpm 28W / 1430 rpm 75W / 1430 rpm 75W / 1430 rpm

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TROUBLESHOOTING
• The appliance is equipped with a self-fault diagnostic device. Any repair of the heater should only be carried
out by a qualified technician.
• Be sure the heater is disconnected from the gas cylinder before any repair work is undertaken.
• Be sure that the power cord is disconnected from the power socket and that the appliance is electrically
isolated, prior to any repair/maintenance work being undertaken.
• Never try to modify the heater from its original configuration.
• Only use manufacturer’s original spare parts to repair the appliance.
• If the heater cannot be adjusted to operate as per the manufacturers specifications, contact the
manufacturer or an approved service agent. Do not continue to operate the appliance.
PROBLEM POSSIBLE CAUSE REMEDY
Fan does not work
- No electric supply
- Fan blade blocked by shell
- Flow switch open
- Check heater is on
- Adjust motor grid or rear handle screw.
- Check flow switch is not impeded, replace if
faulty
Ignition failed
Piezo model
(HF 15 / HF 20)
- Igniting cable worn out
- Hi voltage module defective
- Distance between electrode and
burner too large.
- Service with qualified person
- Change module
- Adjust distance between 3-8mm
Ignition failed
Automatic model
(HF 30 / HF 50)
- Temperature switch set lower than
ambient temperature
- When power supply cut o and
recovery, heater does not automatic
start
- Set a target temperature higher than ambient
temperature by adjusting thermostat dial (Item
5 of automatic model -refer to page 5)
- After power supply cut-o and recovery, the
ON-OFF switch (Item 4 of automatic model -
refer to page 5) must be manually reset for
operation to resume
No gas
- Gas cylinder empty
- Gas valve on cylinder closed
- Gas valve of heater is closed
- Gas solenoid shut
- Limit thermostat open
- Replace with new cylinder
- Check the valve on cylinder is open
- Press the button of the gas valve
- Ensure solenoid has power, replace solenoid
- Check limit thermostat and reset if necessary
Gas leak in inlet line
- Leaking regulator / gas hose - Immediately close the gas connection and
check hose and connections in the gas supply
line. Replace hose and regulator immediately.
Flame extinguishes
while heater is running
- Thermo electric element not at
operating temperature
- Thermostat turns o
- Restricted air flow.
- Repeat ignition process.
- Allow heater to cool for minimum 5 minutes.
- Check heater inlet and outlets and move any
obstructions.

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MAINTENANCE AND STORAGE
• Keep the heater clean, especially the motor grid and fan blades. This should be done seasonally or sooner if
used in dirty operating conditions.
• Store the heater in dry, clean and safe place, away from the reach of children.
• The heater should be inspected at least once a year by a suitably qualified person.
• Frequently check the gas hose and its screw connections for leaks. Replace damaged gas hoses immediately.
• Frequently check the electrical cord for damage and abrasion. Replace damaged cords immediately.
• Appliance repair and replacement of damaged electrical cords/gas hoses, should only be done by a suitably
qualified person.
SERVICING INSTRUCTIONS AND MAINTENANCE SCHEDULE
• After isolating the appliance from gas and electrical supplies, remove the 4 screws that hold the appliance
cover in place. This will allow access to components for service/inspection:
• After maintenance/inspection work is complete, make sure all screws and fasteners are tight. Reconnect the
gas hose and check for leaks. Following the instructions set out in this manual, check for the correct operation
of the heater and make sure that all safety components are functioning correctly – flow switch, flame failure
device, limit thermostat.
ELECTRICAL COMPONENT SERVICE
• Check the flow switch for continuity and that all connections are in good condition.
• Check the limit thermostat for continuity and that all connections are in good condition.
• Check the electrical fan connections are in good condition and that the fan is securely mounted within the
appliance casing.
GAS COMPONENT SERVICE
• Check the gas tightness of the various components within the gas train by brushing a soapy solution over the
suspect connection. NEVER use a naked flame to check for suspected gas leaks.
• Ensure all connections are gas tight and fasteners are adequately tightened.
BURNER SERVICE
• Check the connection between the injector holder and venturi pipe. If connection is loose, tighten securing screw.
• Loosen and remove retaining screw from injector holder to burner venturi. Set aside screw in safe location for
future reassembly. Remove injector body and inspect injector for blockage. If required, injector can be cleaned
by blowing compressed air in opposite direction to normal gas flow.
• Remove all securing screws/bolts for the combustion assembly and set aside for future reassembly. Remove
the combustion assembly and clean with compressed air where necessary. Check flame failure device
(thermocouple) and ignition electrode for any cracks and that they are correctly positioned. Reassemble the
burner unit in reverse order to the above instructions. Ensure all fasteners are adequately tightened
ELECTRODE
THERMOCOUPLE
BURNER
HIGH TEMP. SWTCH
Note: Service is to be carried out annually by qualified technicians

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REF30/50 MANUAL MODEL SPARE PARTS SCHEDULE
ITEM DESCRIPTION QUANTITY
1 M4 x 25 bolt 4
2 Handle 1
3 Dished washer 2
4 M4 nut 2
5 Motor grille 1
6 6.3 x 13mm screw 14
7 Motor assembly 1
8 Fan blades 1
9 Dished washer 1
10 Spring washer 15
11 Screw 9
12 Plug and cord 1
13 Electrical cord grommet 1
14 Piezo-ignitor 1
15 ON-OFF Switch 1
16 Regulator 1
17 Gas hose 1
18 Inlet connection 1
19 Gas cock 1
20 Motor housing 1
21 M12 nut 1
22 Elbow 1
23 Gas safety valve 1
24 Thermo element 1
25 Nipple 1
26 Gas pipe 1
27 Nozzle body 1
28 Grommet 1
29 Terminal block 1
30 Solenoid valve 2
31 M8 Nut 1
32 Thermostat 1
33 Burner assembly 1
34 Nipple 1
35 Cover 1
36 Injector nozzle 1
37 Nut 1
38 Ignition electrode 1
39 M4 x 10 screw 1
40 Ignition cable 1
41 Inner combustion liner 1
42 Outlet safety guard 1
43 Heater body 1
44 Frame stand 1
45 Wheels 2
46 Dished washer 2
47 Nut 2
48 Flow proving switch 1
49 Bracket 1
ILLUSTRATED PARTS BREAKDOWN AND PARTS LIST
HF 15/20 - MANUAL MODEL

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ILLUSTRATED PARTS BREAKDOWN AND PARTS LIST...Cont...
REF30/50 AUTO MODEL SPARE PARTS SCHEDULE
ITEM DESCRIPTION QUANTITY
1 Motor assembly 1
2 Solenoid valve 2
3 Indicating Lamp 1
4 Flame Detection Needle 1
5 Burner Assembly 1
6 Igniting Electrode 1
7 Gas Regulator 1
8 Thermostat 1
9 PSB Controller 1
10 Temperature Switch 1
11 Heater Body 1
12 Motor Mount 1
13 Damper 1
14 Inlet Grill 1
15 Fan Blades 1
16 Grill Outlet 1
17 Burner Assembly 1
18 Gas Hose 1
19 Gas Pipe 1
20 Injector Block 1
21 Wheel Frame Support 1
22 Bracket 1
23 Construction Joint 1
24 M18 x 1 Nut 1
25 Injector Nozzle 1
26 Flow Switch 1
27 ON - OFF Switch 1
28 Combustor Liner 1
29 Cover 1
30 Controller Box 1
31 Cord Grommet 1
32 Plug & Cord 1
33 Handle 1
34 Wheel 2
35 Terminal block 1
36 Rubber bush 2
37 Ignition Line 2
38 Test Connection 1
HF 30/50 - AUTOMATIC MODEL

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A (Br)
N (Bl)
E (Gr)
MAIN SWITCH
SOL 1
FAN MOTOR
TERMINAL BLOCK
LEGEND
A ACTIVE N NEUTRAL E EARTH SOL SOLENOID LT LIMIT THERMOSTAT FFD FLAME FAILURE DEVICE TH THERMOCOUPLE
TH
LT
FFD
FLOW SWITCH
SOL 2
SAFETY CIRCUIT
ELECTRICAL SCHEMATIC - MANUAL MODEL

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FLOW SWITCH
THERMOSTAT
MAIN SWITCH
SOLENOID 2
SOLENOID 1
LUMINOUS INDICATOR
LIGHT
MOTOR
LIVE LINE
NEUTRAL LINE
IGNITION FLAME SENSOR
ELECTRICAL SCHEMATIC - AUTOMATIC MODEL