SPACE WARMER® KEROSENE/DIESEL
HEATERS WITH WHEELS
MODEL NO: AB1258.V4, AB1758.V4
Thank you for purchasing a Sealey product. Manufactured to a high standard, this product will, if used according to these instructions,
and properly maintained, give you years of trouble free performance.
IMPORTANT: PLEASE READ THESE INSTRUCTIONS CAREFULLY. NOTE THE SAFE OPERATIONAL REQUIREMENTS, WARNINGS & CAUTIONS. USE
THE PRODUCT CORRECTLY AND WITH CARE FOR THE PURPOSE FOR WHICH IT IS INTENDED. FAILURE TO DO SO MAY CAUSE DAMAGE AND/OR
PERSONAL INJURY AND WILL INVALIDATE THE WARRANTY. KEEP THESE INSTRUCTIONS SAFE FOR FUTURE USE.
1. SAFETY
1.1. ELECTRICAL SAFETY
WARNING! It is the user’s responsibility to check the following:
9 Check all electrical equipment and appliances to ensure that they are safe before using. Inspect power supply leads, plugs
and all electrical connections for wear and damage. Sealey recommend that an RCD (Residual Current Device) is used with
all electrical products.
Electrical safety information. It is important that the following information is read and understood:
9 Ensure that the insulation on all cables and on the appliance is safe before connecting it to the power supply.
9 Regularly inspect power supply cables and plugs for wear or damage and check all connections to ensure that they are secure.
Important: Ensure that the voltage rating on the appliance suits the power supply to be used and that the plug is tted with the correct fuse.
8 DO NOT pull or carry the appliance by the power cable.
8 DO NOT pull the plug from the socket by the cable.
8 DO NOT use worn or damaged cables, plugs or connectors. Ensure that any faulty item is repaired or is replaced immediately
by a qualied electrician.
If the cable or plug is damaged during use, switch o the electricity supply and remove from use.
Ensure that repairs are carried out by a qualied electrician.
1.2. GENERAL SAFETY
Read instructions carefully. Read and follow all instructions. Place instructions in a safe place for future reference.
8 DO NOT allow anyone who has not read these instructions to assemble, light, adjust or operate the heater.
9 If the information in this manual is not followed exactly, a re or explosion may result causing property damage, personal injury or loss of life.
Check that the heater is in sound condition and good working order. Servicing must be performed by qualied operatives only.
Take immediate action to repair or replace damaged parts. Use recommended parts only. Unapproved parts may be dangerous and
will invalidate the warranty.
9 Only use clean kerosene or diesel (NOT BIO-DIESEL) to fuel your heater, in accordance with instructions contained in this manual.
WARNING! Only use heater in well ventilated areas. Ensure continuous ventilation from outside of the building is provided to the heater
operating area. Refer to 5.2 Installation Maximum Opening Size. Unvented portable heaters use air (oxygen) from the area in which it
is used. Adequate combustion and ventilation air must be provided.
WARNING! DO NOT store or use compressed air cylinders, petrol or other ammable liquids/gases in the vicinity of this or any other appliance.
WARNING! re, burning and inhalation hazard. Keep solid combustibles such as building materials, paper and cardboard away from
the heater. Never use the heater in spaces which do or may contain volatile or airborne products such as petrol, solvents, paint thinner,
dust particles or unknown chemicals.
WARNING! Direct red heaters may cause carbon monoxide (CO) poisoning when incorrectly used e.g. indoors without adequate air
circulation, or if not working properly. CO poisoning may lead to death.
8 DO NOT use the heater in closed rooms, living areas, basements or below ground level.
8 DO NOT allow untrained persons to operate the heater and DO NOT operate the heater without the cover.
8 DO NOT move or handle the heater when hot.
8 DO NOT leave the heater unattended when in use. Switch the heater o and unplug from the mains before leaving work area.
8 DO NOT ll the fuel tank whilst the heater is running or still hot.
8 DO NOT overll the fuel container. Wipe up any spilt fuel immediately.
8 DO NOT obstruct the air inlet (rear) and air outlet (front) of the heater. DO NOT use duct work in front or at the rear of the heater.
8 DO NOT look into the exhaust end of the heater.
8 DO NOT allow children or animals near the heater when in use, or while hot.
WARNING! Not for recreational vehicle use.
▲ DANGER! The front outlet is very hot during operation. DO NOT touch danger of burning.
WARNING! RISK OF ELECTRIC SHOCK. DO NOT expose the heater to water spray, rain, dripping water or wind.
8 DO NOT operate the heater when you are tired or under the inuence of alcohol, drugs or intoxicating medication.
8 DO NOT touch the heater outlet or dome when rst switched o as these are very hot and will take time to cool.
9 Ensure that the heater is correctly turned o when not in use and store in a safe, dry area, out of reach of children.
8 DO NOT unplug the heater to switch it o. Use the ON/OFF switch.
WARNING! Improper maintenance can lead to poor combustion and soot production
WARNING! IF YOU NEED ASSISTANCE OR HEATER INFORMATION SUCH AS AN INSTRUCTIONS MANUAL, LABELS, ETC.
CONTACT THE MANUFACTURER.
Refer to
instructions
Warning!
Warning!
Hot surfaces
Warning!
automatic
start-up
Original Language Version
© Jack Sealey Limited
AB1258.V4, AB1758.V4 Issue 4 (3) 15/01/24
NOTE: This appliance is not intended for persons (including children) with reduced physical, sensory or mental capabilities, or lack
of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person
responsible for their safety. Children should be supervised to ensure that they do not play with the appliance.
2. INTRODUCTION
Clean burning and proven pump system can operate with either kerosene or diesel. Stainless steel combustion chamber. Dual LED
Display for ambient and thermostatically controlled desired temperature. Fitted with safety cut-outs and fuel gauge. Features sturdy
handle and heavy-duty wheels for easy manoeuvrability Complies with rigorous standards.
3. SPECIFICATION
MODEL NO. AB1258.V4 AB1758.V4
Airow (cfm) 529 647
Electrical fuse rating 13A 13A
Electrical Plug type 3-pin BS 3-pin BS
Fuel Kerosene/Diesel Kerosene/Diesel
Fuel tank 50L 50L
Heated area 42,300ft³(1,200m³) 49,500ft³(1,400m³)
Motor power 340W 340W
Output 135,000Btu/hr(40kW) 175,000Btu/hr(50kW)
Running time per lling (max.) 11hr 11hr
Supply 230V~50Hz 230V~50Hz
Transport wheels Yes Yes
4. ASSEMBLY
4.1. To assemble the heater, proceed as follows (see Fig.1):
4.2. Insert the wheel shaft E into the corresponding hole of the caster xing plate J, insert the cotter I to the corresponding holes of the
wheel shaft; put plain washer F to the two sides of shaft, slide the wheel D over the wheel shaft E, screw the nut G to x the wheel on
the shaft
4.3. Install the wheel cover H.
4.4. Use the clamping screw C and Plain washer ø6 B to install the Handle A into the corresponding hole of the caster xing plate J.
FIG.
1
NO. DESCRIPTION QTY.
A Handle 1
B Plain washer Ø6mm 4
C Clamping screw 4
D Wheel 2
E Wheel shaft 1
F Plain washer Ø12mm 2
G Nut M12 2
H Wheel cover 2
I Cotter pin 2
J Castor xing plate 2
5. INSTALLATION
5.1. Position the heater on a at, level, non-ammable, solid surface.
5.2. Direct-red heaters are intended for use in outdoor open areas or in indoor well ventilated areas. For indoor use, provide permanent
ventilation openings of at least 25 cm²/kW, equally distributed between oor and high level, with a minimum of 250 cm².
Maximum Opening Size:
AB1258, AB1758 - 1250cm
2
9 Only install the heater in normal upright position.
8 DO NOT place the heater near walls, corners or low ceilings.
8 DO NOT place the heater below a socket outlet.
8 DO NOT place the heater on moving vehicles or where it can tip over.
9 Keep the heater away from ammable, combustible, explosive or corrosive materials.
9 Keep the heater away from curtains or similar materials that could block the air inlet and outlet.
9 Never block or restrict the air inlet and outlet for any reason.
9 Keep the power cable away from heat sources, sharp edges, cutting and moving parts.
8 DO NOT expose directly to the weather or to excessive humidity.
8 DO NOT place the heater in the immediate surroundings of a bath, shower or swimming pool.
5.3. Follow general and special re safety regulations in force in all elds of applications. In any case ensure the following minimum safety
clearances from materials or objects in the surroundings of the heater:
Side: 0.6 m Air inlet side: 1 m Top: 1.5 m Hot air outlet side: 3 m Floor: 0 m
Original Language Version
© Jack Sealey Limited
AB1258.V4, AB1758.V4 Issue 4 (3) 15/01/24
5.4. Floors and ceilings must be made of reproof materials in the place where the heater is operated.
8 DO NOT connect direct-red heaters to air ducts
6. OPERATING CONDITIONS
6.1. KEROSENE AND DIESEL FUEL USAGE
These AB heaters are factory adjusted to give the most efficient burn on kerosene but will also burn diesel. Note that kerosene will tend to
burn more cleanly than diesel. Care should be taken to provide at least the minimum amount of ventilation recommended when burning
diesel.
6.2. STORAGE OF FUEL
Always store kerosene and diesel in a well ventilated area well away from general living space. Do not store in direct sunlight or near a
source of heat or other source of ignition such as a torch or a portable generator. Do not use fuel that has been stored from one season
to the next as it may have deteriorated and will not burn properly in the heater. Store the fuel in a suitable container which complies with
requirements set out in local authority regulations.
WARNING! Air contaminants taken into the heater may affect the heat output, damage the unit and may cause health problems.
Example: Bodyshop filler dust / paint overspray will damage the motor bearing, clog the filter and pump and contaminate the combustion
chamber causing flame flutter and health hazards. Please note that any parts damaged by filler dust / paint overspray will not be covered
by warranty. Additionally, a cleaning charge will be made for any heaters damaged by filler dust.
7. OPERATION (REF. FIG.1A)
7.1. START UP
7.1.1. Fill tank with clean fuel. Only use Diesel or Kerosene. The fuel
gauge on top of the tank allows to check fuel level.
7.1.2. Connect the power cord plug to a AC220-240V 50 Hz earthed
electrical supply system. Earthing is mandatory.
7.1.3. When complete “start-up” above, the left display window shows “--
”, the right display window shows ambient temperature value.
7.1.4. Push the power switch to “ON”(1) position.
7.1.5. The default temperature setting is 20°C, shown on the left display
window.
7.1.6. If the ambient temperature is lower than default temperature, the electrodes start sparking, after 7 seconds, the heater starts.
7.1.7. If the ambient temperature is higher than default temperature, turn thermostat control knob to desired temperature, the electrodes start
sparking, after 7 seconds, the heater starts.
7.2. COLD START UP
7.2.1. At low temperature keep the air vent hole g.4 closed by a nger during ignition to make start-up easier.
7.2.2. ABNORMAL OPERATION: in case of malfunction (ame failure, reduced air ow, bad combustion, etc.) the heater stops and the
indicator light starts FLASHING (THE LOCK-OUT MODE code will be showed on the display window).
7.3. MANUAL REST/RESTART
7.3.1. If the heater is in lock-out mode, check and remove the cause of lock-out before restarting the heater.
7.3.2. To reset, turn the ON/OFF switch to 0 and then again to I. In case of repeated malfunction, call technical service.
Turning the thermostat control knob will NOT reset the heater.
7.4. SHUT DOWN
7.4.1. Move switch to “OFF” (O) position. Unplug the unit when not used for a long time.
7.4.2. Never disconnect the heater from mains to stop it while in operation. Always allow the cooling sequence to be completed, otherwise the
residual heat could damage internal components.
8 DO NOT cover the heater.
8 DO NOT block the air inlet and outlet.
WARNING! The heater outlet is very hot during operation and after use. DO NOT TOUCH! Use personal protecting equipment if
needed.
WARNING! Children should be supervised to ensure that they do not play with the appliance.
Note: The appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or
lack of experience and knowledge.
7.4.3. Unplug the heater before moving it. Never pull the cable to unplug or move the unit.
8 DO NOT leave the heater unattended when in use.
8 Never use the appliance with wet hands or when either the heater or the power cable is wet.
WARNING! If the supply cable is damaged, it must be replaced by the manufacturer, by a service agent or a similar qualied person.
8. CLEANING & MAINTENANCE
WARNING! Before starting any maintenance task, shut down, unplug and let the heater cool down for at least 15 minutes.
8 DO NOT attempt any electrical repair yourself. If the heater needs service or repair, contact a qualied technician.
8 DO NOT use a faulty unit unless a qualied technician has inspected and repaired it.
9 When cleaning, make sure that water does not enter the unit.
8 DO NOT open the enclosure to clean the inner parts. DO NOT spray water into the heater.
8 Never use solvents, gasoline, toluene and similar aggressive chemicals to clean the heater.
8.1. Regularly wipe the enclosure using a soft sponge or cloth. For very dirty parts, use a sponge wetted with lukewarm water and a mild
detergent, then dry using a clean cloth.
8.2. Keep air inlet and fan free from dust and dirt. To clean inner parts, gently blow compressed air through air inlet.
8.3. Regularly inspect the power cable: if worn, cracked or damaged have it replaced by technical service.
8.4. Before storing the heater, make sure it is perfectly cool and dry. Cover the unit with a plastic bag, put it in its packing box and store it in
a dry, ventilated place.
FIG.
1A
Original Language Version
© Jack Sealey Limited
AB1258.V4, AB1758.V4 Issue 4 (3) 15/01/24
8.5. LONG TERM STORAGE
If the heater is to be stored for a long period of time, drain the fuel through the fuel cap
opening. Rinse and swirl a small amount of fuel within the tank and then empty it fully. When
you come to use the heater again do not use old fuel which has been stored from the previous
season. Use of old fuel can damage your heater.
Although our heaters operate with diesel fuel, when the temperature is below 0°C diesel
additives are required to maintain the diesel’s viscosity. Typically diesel can cloud in freezing
conditions and will start to gel. You will need additives for your fuel in these conditions.
Kerosene does not start to gel until the ambient temperature is around -40°C.
Refer to g.1B.
8 DO NOT use paran in these heaters.
8.6. MAINTENANCE The following checks BY QUALIFIED PERSONNEL ONLY are
recommended before every seasonal use:
8.6.1. Nozzle
Carefully unscrew nozzle from nozzle tting. Blow compressed air through nozzle orice to free it from dirt. Replace nozzle if
necessary.
8.6.2. Air Filters
Clean air lters. Remove lter end cover (11), wash air intake lter (10) using a light detergent and dry it thoroughly before re-installing.
Replace air delivery lter (9) once a year g.2.
FIG.
2
8.6.3. Ignition Electrodes g.3
Clean and if necessary replace the ignition electrode. For electrode gaps see g.3.
FIG.
3
8.6.4. Compressor Pressure Adjustment g.4
WARNING! The compressor pressure is factory set and must be checked by qualied technicians only. Tampering with the unit may be
dangerous.
Remove pressure gauge cap. Connect a pressure gauge on the pressure measuring port on the rear guard. Start heater and read
air pressure value. If necessary adjust pressure to correct value by turning the adjusting screw (the air vent hole in the adjusting screw
middle) clockwise to increase, anticlockwise to decrease the pressure.
Model Air Pressure (bar)
AB1258, AB1758 0.45
FIG.
4
FIG.
1B
Original Language Version
© Jack Sealey Limited
AB1258.V4, AB1758.V4 Issue 4 (3) 15/01/24
Sealey Group, Kempson Way, Suffolk Business Park, Bury St Edmunds, Suffolk. IP32 7AR
01284 757500 sales@sealey.co.uk www.sealey.co.uk
WEEE REGULATIONS
Dispose of this product at the end of its working life in compliance with the EU Directive on Waste Electrical and Electronic Equipment
(WEEE). When the product is no longer required, it must be disposed of in an environmentally protective way. Contact your local solid
waste authority for recycling information.
9. TROUBLESHOOTING
PROBLEM CAUSE REMEDY
Motor does not start
E1 displayed on the screen
No power or low voltage Check power line and voltage
Faulty or damaged mains cable Check and replace if needed
Faulty motor/capacitor Check and if necessary replace
Lockout of appliance due to previous overheating Detect the cause of the overheating
Shut the appliance down
Check air inlet and outlet
Wait a few minutes and restart the heater
E2 displayed on the screen The temperature probe is faulty or the connector
for the temperature probe is loose
Check and replace the temperature probe
if needed
Check and replace the PCB if needed
Motor runs, but the heater does
not ignite and locks out after a
short time
E1 displayed on screen
Empty fuel tank, dirty or wrong fuel Remove wrong or dirty fuel
Fill tank with clean diesel or kerosene
Fuel lter clogged Clean or replace fuel lter
Air leaks on oil line Check hoses, tighten connections, if
necessary replace
Burner nozzle clogged Clean nozzle with compressed air, replace
if necessary
Fuel viscosity increased at low temperature Mix diesel with 10-20% kerosene
Flames come out of ue outlet
E1 displayed on screen
Insucient airow into combustion chamber Check air inlet, fan, motor
Compressor pressure too high Check air pressure , adjust if needed*
Heater stops during operation
Ambient temperature displayed on
the screen
The room temperature set on room thermostat has
been reached
Normal operation
To start turn temperature control knob
clockwise onto a higher setting
Heater stops during operation
E1 displayed on screen
Flame failure Check and remove the cause of the
malfunction
To reset, turn On/O switch to 0 and then
to I
Call technical service if problem persists
Bad combustion
Reduced airow
Overheating
LC displayed on the screen A 3 times failure for igniting will lock the PCB and
stop operation
With mains supply connected, heater will
unlock after the power switch is switched to
ON 3 times in 10 seconds
Note: It is our policy to continually improve products and as such we reserve the right to alter data, specifications and component parts without prior
notice. Please note that other versions of this product are available. If you require documentation for alternative versions, please email or call
our technical team on technical@sealey.co.uk or 01284 757505.
Important: No Liability is accepted for incorrect use of this product.
Warranty: Guarantee is 12 months from purchase date, proof of which is required for any claim.
Original Language Version
© Jack Sealey Limited
ENVIRONMENT PROTECTION
Recycle unwanted materials instead of disposing of them as waste. All tools, accessories and packaging should be
sorted, taken to a recycling centre and disposed of in a manner which is compatible with the environment. When
the product becomes completely unserviceable and requires disposal, drain any uids (if applicable) into approved
containers and dispose of the product and uids according to local regulations.
REGISTER YOUR
PURCHASE HERE
AB1258.V4, AB1758.V4 Issue 4 (3) 15/01/24
Product Information Sheet. Local Space Heaters, Gas / Liquid Fuel.
SUPPLIER_NAME_OR_TRADEMARK Sealey EU Ltd.
DELEGATED_ACT 2015/1188/EU
MODEL_IDENTIFIER AB1258
ADDRESS
Farney Street, Carrickmacross, Co. Monaghan, A81 PK68 Ireland
PHONE_NUMBER 01284 757 500
EMAIL_ADDRESS TechnicalCompliance@sealey.co.uk
Indirect heating functionality
No 50.0
Fuel type
Liquid
NA
110.0
Heat output
Nominal heat output kW
50.0 100.0
Minimum heat output (indicative) kW
NA NA
Auxiliary electricity consumption
At nominal heat output kW 0.002 No
At minimum heat output kW NA No
In standby mode kW NA No
Yes
No
No
No
No
No
No
No
No
Permanent pilot flame power requirement
Pilot flame power requirement (if
applicable) kW
NA
Suppliers website https://www.sealey.co.uk/
With distance control option
With adaptive start control
With working time limitation
With black bulb sensor
With electronic room temperature control
plus week timer
With electronic room temperature control
plus day timer
Other control options
Room temperature control, with presence
detection
Room temperature control, with open
window detection
With electronic room temperature control
Single stage heat output, no room
temperature control
With mechanical thermostat room
temperature control
Type of heat output/room temperature
control
Useful efficiency
at nominal heat output
at minimum heat output
Space Warmer® Paraffin/Kerosene/Diesel Heater 125,000Btu/hr with Wheels
Indirect heat output (kW)
Direct heat output (kW)
Space Heating Emissions mg/kWh
Two or more manual stages, no room
temperature control
Product Information Sheet. Local Space Heaters, Gas / Liquid Fuel.
SUPPLIER_NAME_OR_TRADEMARK Sealey EU Ltd.
DELEGATED_ACT 2015/1188/EU
MODEL_IDENTIFIER AB1758
ADDRESS
Farney Street, Carrickmacross, Co. Monaghan, A81 PK68 Ireland
PHONE_NUMBER 01284 757 500
EMAIL_ADDRESS TechnicalCompliance@sealey.co.uk
Indirect heating functionality
No 50.0
Fuel type
Liquid
NA
110.0
Heat output
Nominal heat output kW
50.0 100.0
Minimum heat output (indicative) kW
NA NA
Auxiliary electricity consumption
At nominal heat output kW 0.002 No
At minimum heat output kW NA No
In standby mode kW NA No
Yes
No
No
No
No
No
No
No
No
Permanent pilot flame power requirement
Pilot flame power requirement (if
applicable) kW
NA
Suppliers website https://www.sealey.co.uk/
Space Warmer® Paraffin/Kerosene/Diesel Heater 175,000Btu/hr with Wheels
Indirect heat output (kW)
Direct heat output (kW)
Space Heating Emissions mg/kWh
Two or more manual stages, no room
temperature control
With electronic room temperature control
Single stage heat output, no room
temperature control
With mechanical thermostat room
temperature control
Type of heat output/room temperature
control
Useful efficiency
at nominal heat output
at minimum heat output
With electronic room temperature control
plus week timer
With electronic room temperature control
plus day timer
Other control options
Room temperature control, with presence
detection
Room temperature control, with open
window detection
With distance control option
With adaptive start control
With working time limitation
With black bulb sensor
