LIFESTYLE APPLIANCES LFS921P Quick guide

Installation and Instructions
Manual
Greenhouse Heater
Caution! Please read the installation and instructions manual carefully before using the heater!

1. Important safety instructions
This appliance must only be used for space heating. IT IS NOT FOR DOMESTIC USE. Use only in a well-
ventilated area, do not use in Leisure Vehicles such as Caravans, Awnings and Mobile homes, It must not be
used in high-rise flats, basements, bathrooms or bedrooms or as fixed heating. Do not position the
heater close to walls, furniture, curtains, bed linen, or any other inflammable materials where their
positioning may create a fire risk. The unit cannot be used underground.
The unit can only be used with a fixed pressure regulator. The output pressure of the regulator must match
the pressure indicated in the rating label ( 37 mbar ). The rating label can be found on the
heater. The pressure regulator must be approved according to the relevant standards.
The unit can only be used with propane gas.
Check for the presence and proper condition (no damage) of the seals on the cylinder valve each time the gas
cylinder is changed. Do not use any additional seals.
The Gas cylinder must be protected against heat (for instance, strong direct sunlight).
The heater must only be used with the cylinder in a vertical position.
Make sure the high pressure rubber gas hose is not bent or twisted. The rubber gas hose must be approved
according to the relevant standards.
The flexible hose must be placed in such a manner as to avoid contact with the heated parts of the unit.
Replace the hose as soon as it starts presenting signs of damage or deterioration (inspect regularly).
After assembling the heater, check all connection points for the presence of leaks using a leak detection spray.
Never use a naked flame to perform this leakage test and keep naked flames away when conducting a
leak test. In the event of gas leakage, the appliance MUST be turned off at the gas cylinder
valve. Do not move the unit when it is in operation or hot.
The unit must always be kept under regular supervision during its operation.
Do not touch the outside casing of the unit during or immediately after being used to avoid getting
burnt. The guard on this appliance gets hot when in use, do not touch or remove when using the
heater. Any modification to the heater may be dangerous and is not authorised unless it is made by authorised and
qualified personnel only.
Keep naked flames and ignition sources (such as sparks and others) away during the change of a cylinder.
Close the cylinder valve fully before changing the cylinder.
When using the greenhouse heater, place it on a flat, stable and non-flammable surface and keep
it at a safe distance from any flammable materials and fabrics. The minimum distances required
are, 40cm for overhead surfaces and 10cm for adjacent side surfaces. The distance for surfaces to the rear is
achieved through the assembled brackets.
When using the greenhouse heater only use the brackets ( feet ) supplied with the unit when assembling and
mounting the heater.
Maintenance and repair should be performed by authorised and qualified personnel only.
Please contact the manufacturer to ask for the technical instructions needed to do the maintenance or repair the
heater. Maintenance or repairs are for authorised and qualified personnel only.
2. Assembling and connecting the heater to the gas cylinder
This appliance must be installed in accordance with the regulations in force.
Before operating the heater, the two supplied brackets (feet) must be mounted on the bottom of the
greenhouse heater with screws supplied (see image A).
Before operating the heater, make sure that the gas connection supply components i.e. type of gas and gas
pressure regulator for this heater are compatible. The regulation values for this unit can be found on
the rating label and in this manual. This unit does not include an exhaust gas evacuation system.
It must be mounted and connected according to the instructions. Pay special attention to the ventilation
requirements.
Attention: After assembling the gas hose to the heater and to the gas regulator, check all connection points for
the presence of gas leakages by using only leak detection spray or a water and soap solution. Never use a
naked flame.
The following items are required to enable the heater to be assembled for use:
-Commercial Gas Cylinder 13kg or 19kg or 47kg;
Pressure regulator fixed 37 mbar (standardized and approved) in accordance with the cylinder with a
minimum amount of gas flow of 1,0kg/h;
-Hose (standardized and approved) with sufficient length (approx. 80cm);
-Leak detection spray or water with soap;
The greenhouse where you use the appliance must have a minimum volume of 8 CBM. It must have a
section of free flowing ventilation of at least 50 cm2, both in the top and botton parts of the
greenhouse. G)

3. Operating the heater
1. To improve the efficient operation or you heater make sure your heater is raised off the greenhouse floor
by at least 30 cm (12 inches). This will reduce the effect of cold strike from the greenhouse floor onto the
thermostat body.
2. . To improve the efficient operation or you heater detach the thermostat probe from its 2 plastic securing
clips at the rear of the heater and fully uncoil the wire that is attached to the probe (see image E). Position the
probe DIRECTLY above the heater at a similar height at which you require the greenhouse temperature to be
sensed. MAKE SURE THE PROBE IS NOT SECURED TO ANYTHING METALLIC AS THIS WILL
ADVERSELY EFFECT THE TEMPERATURE SENSING EFFICIENCY OF THE THERMOSTATIC PROBE
AND CAUSE EXCESSIVE GAS USAGE AS WELL AS CAUSING THEGREENHOUSE TO BE HOTTER THAN
THE DESIRED TEMPERATURE SETTING ON THE HEATER. N.B. THE CLOSER THE PROBE IS TO THE
HEATER THE LESS TIME THE HEATER WILL BE ON SO THE COOLER THE GREENHOUSE WILL BE
3. Open the cylinder valve
4. Turn the thermostat setting knob clockwise until you reach the stop. This will align the No 0 setting with
the datum mark which is a hole at a 12 'o clock position ABOVE the Thermostat setting knob. (See image B)
5. Depress the gas valve button (see image B) and hold for at least 30 seconds. Whilst continuing to depress
the gas valve button press the piezo ignitor button (see image C) repeatedly to generate a spark that will ignite
the pilot flame . If the flame of the pilot assembly does not ignite repeat the process again. N.B. THE GAS
VAL VE BUTTON WILL NEED TO BE HELD DOWN FOR WELL IN EXCESS OF 30 SECONDS
ON FIRST IGNITION AND AFTER PERIODS OF NON USE TO ENSURE ALL THE AIR HAS BEEN
PURGED FROM THE HEATER'S GAS SYSTEM.
6. After successful ignition, keep the gas valve button depressed to ensure the thermocouple probe, which
sits adjacent to the pilot flame, is properly heated to enable the main gas valve to stay open. The pilot flame
should now stay lit.
7. You can now adjust your thermostat by turning the thermostat setting knob (see image D) to your desired
setting. 0 setting will give basic frost protection whist setting 1 to 6 which is the maximum setting will give
temperature ranges ( +/- 3 degrees) as detailed in the Thermostat section on page 3.
N.B. YOUR HEATER IS THERMOSTATICALLY CONTROLLED TO PILOT, YOU CANNOT
ADJUST THE FLAME. THE ACCURACY AND EFFICIENCY OF YOUR HEATER IS
DETERMINED BY HOW WELL IT IS SET UP IN YOUR GREENHOUSE. SPECIFICALLY THE
POSITIONING OF THE THERMOSTATIC PROBE.
4. Turning off the heater
To turn off the heater, rotate the thermostat button to O and close the cylinder valve fully.
5. Care and Cleaning
Allow the heater to cool down before cleaning it. Do not clean it when the heater is in operation or just turned
off. Use a soft dry cloth, Do not use abrasive cleaning agents or materials that may scratch the unit or
flammable substances. Only use cleaning products that are specifically designed for paint and
stainless steel. Periodically check that the gas hose is intact, undamaged and the date mark is within 5 years . If
the date has expired, get a qualified or authorised person to change the gas hose.
To ensure the correct operation of the burner, we recommend annual maintenance to be performed at an authorised
service centre.
Attention: spiders or small insects could take up residence inside the burner, pilot assembly or nozzles,
altering the flow of gas and adversely affecting combustion. It is advised to frequently inspect the
aforementioned points, and have the heater cleaned if necessary by a specialised person. SUCH
INFESTATION IS NOT COVERED UNDER WARRANTY
Be careful not to allow cleaning products inside the burner.
6. Storage instructions
Close the cylinder valve after usage or in case of damage.
Remove the pressure regulator by turning the nut clockwise to loosen. Always check the seal of the gas
cylinder valve for damage. In case of doubt or actual damage call an expert or filling station. Never keep a gas
cylinder below ground level or in an unventilated place.
When the season is over put the heater in a dry place after covering it to minimise the chances of the heater
being contaminated by insects or dust.

7. Important instructions on safety
If a gas leak is detected:
Close the gas cylinder valve immediately and avoid naked flames that could ignite the gas.
Open the windows and fully ventilate the greenhouse.
Donot operate any electrical switch and put out any naked flame.
Call authorised and qualified personnel only.
Donot try tofind the leak using a naked flame.
Caution: Certain accessible parts of the heater can become very hot. Keep small children away from the
heater.
The unit is equipped with a protection device against lack of oxygen. When CO2 levels exceed the values allowed,
the gas is cut off by extinguishing the pilot flame cooling the fitted flame failure device ( thermocouple )
8. Before calling in Technical Service
The heater does not ignite:
I - Check if there is gas in the bottle and that the regulator is correctly fitted with the cylinder valve open.
2 - Check to see that the gas tube is connected with no twists.
3 - Check that the instructions have been followed correctly.
4 - If this occurs after changing bottles it may be due to:
4.1 - There is air in the bottle. Press the ignition button down for a longer period of time until the pilot flame
ignites.Then adjust the thermostat setting knob tothe desired position.
4.2 - The bottle may have been exposed to low exterior temperatures. Apply fairly hot wet cloths to the upper part
of the bottle toincrease gasification and the normal exit of gas.
4.3 -Ifthe pilot flame fails to hold after completing the detailed ignition instructions, repeat the operation,
following the instructions carefully.
5 - If the heater goes_ out after working for some time, it is likely that it is operating in an oxygen depleted
atmosphere. ventilate the greenhouse and reignite the heater. The heater is equipped with a protection device
against lack of oxygen, the heater may stop because of the safety cut off device onthe heater in the Oxygen
Depletion System, that is to say if the CO2 revels exceed the values allowed, the gas input is cut-off. This is not
a malfunction, but a safety feature.
6 - If the heater goes out after a really short period of time, ensure that it is not exposed to air currents or that
the bottle has not run out.
7 - It is advised that these heaters should not be used in Polytunnels, they should only be used in a well ventilated
greenhouses,where air circulation and ventilation is essential.
Thermostat:
This greenhouse heater is supplied with a thermostatic device that can allow you tocontrol the air temperature. The
approximate temperatures in reference to the numbers on the thermostat control knob are:
Position 1-7°C / Position 2 -12°C/ Position 3 -l 7°C / Position 4 -22°C
Position 5 - 27°C / Position 6 - 32°C
Note: As this thermostat is mechanical you have a +/- 3°C tolerance with regard to these values.
I - Ensure that the thermostat probe ( the copper probe situated behind the heater secured by 2 plastic clips) is
placed where you can control the general air temperature of the greenhouse otherwise you may have a
general temperature inside the greenhouse of 20° C but because the probe 1s placed where the temperature is
15°C the heater will keep working.
The consumer must carefully select the place where they have the probe positioned to achieve the temperature
they desire in the greenhouse.
2 - This is a mechanical thermostat not an electronic one so there is a difference between the temperature in the
greenhouse andtheonedetected by the probe from the thermostat (+/-3°C), therefore there maybesomediscrepancies
between an electronic thermometer (which will give you the exact temperature) and the mechanical thermostat
used in the greenhouse heater.
3 - When the probe senses the temperature chosen via the thermostat knob, only the burner shuts
down. The pilot flame stays alight, this doesn't mean the heater has a malfunction but the burner will only
ignite again when the temperature in the probe is below the temperature chosen via the thermostat control knob.
3.1 - Example:The range from the thermostat is between 7°C and 32° C, therefore if you operate the heater
and you turn it to position 3, this represents a temperature in the probe between 14 ° and l 9° .If the temperature is
higher than 19° C in the vacinity of the probe the main burner °will not light until the ambient
temperature in the vacinity of the thermostatic probe drops below 14° C.

GREENHOUSE HEATER FAQ ADVICE SHEET
SYMPTOMS FAULT REMEDY
1.Pilot will not light No spark across
electrode gap or
the spark is
weak.
(a) Ensure that piezo-electric igniter is functioning correctly.
(b) Check that the piezo cable is not damaged.
(c) Check that the piezo cable is attached securely to the piezo button
2.Pilot will not light but good strong spark Insufficient On first ignition or after periods of non use the gas takes a long time to
is visible purging of the air finally reach the jet for the pilot assembly. It can take in excess of 1
within the gas minute with the control valve button depressed to finally realise a full flow
hose and of gas to the pilot assembly. If ignition is tried too early then you are trying
pipework of the to ignite air and not gas.
heater
3.Pilot will not light Incorrect position Re-position spark plug on the pilot assembly so
automatically but points of spark that a clearly visible spark jumps across gas
in relation to pilot flow.
(a) (b) and (c) in No 1 are satisfactory
and the pilot will light with a match. gas flow.
4.Heater will not remain Electro-magnetic
alight when pressure is valve
released from the control valve button. closes while
heater is alight.
(a)Ensure that thermocouple probe is located in pilot flame.
(b )Ensure thermocouple nut is tightened into the main valve.
(c) when pilot flame is alight make sure flame is full and not burning
above the spark emitter on the pilot assembly
(d)Check thermocouple.
(e)Check electromagnetic valve
(d) and (e) ONLY TO BE ATTEMPTED BY A GAS ENGINEER.
AFTER PERIODS OF NON USE THE PILOT ASSEMBLY IS PRONE TO
SPIDER INFESTATION THIS WILL RESULT IN EITHER NO PILOT
FLAME OR A YELLOW PILOT FLAME WHICH WILL NOT HOLD WHEN
THE BUTTON IS RELEASED. THOROUGH CLEANING OF THE PILOT
ASSEMBLY IS REQUIRED TO REMOVE ANY IMPEDIMENTS.
SPIDER / INSECT INFESTATION IS NOT COVERED UNDER
WARRANTY
5. Main burner emits large yellow flames Blockage in the
when alight main paddle
burner
6.After setting thermostat to desired Thermostatic
position heater will either not go off or will probe is not in
not come on. the correct
position within
EXCESSIVE GAS USAGE your greenhouse
After periods of non use the main burner assembly is also prone to spider
infestation either within the burner body are at the primary air intake of the
main burner assembly. These partial blockages will create an imbalance in
the gas and air mixture for the main burner resulting in poor combustion
of the gases. If not addressed a build up of soot will occur further effecting
the efficiency of combustion and eventually resulting in complete main
burner blockage. Regular cleaning of the burner and primary are intake
are recommended. SPIDER / INSECT INFESTATION IS NOT COVERED
UNDER WARRANTY
You must ensure that the thermostat probe ( copper tube situated behind
the heater secured by 2 plastic clips ) is detached and placed where you
want to control the general air temperature of the greenhouse. Incorrect
positioning of the probe will severely affect the efficiency and the heating
accuracy of your greenhouse.
7. Heater goes out during period of use Lack of adequate The heater is fitted with an ODS SENSOR (Oxygen Depletion System )
ventilation in the
area of use
particularly in the
lower area of the
greenhouse where
Gas Emissions will
collect as they are
heavier than the
normal
atmosphere.
IF THE ATMOSPHERE WITHIN THE AREA OF USE CONTAINS
A LOWER THAN THE CERTIFIED CONTENT OF OXYGEN
THEN THE HEATER WILL SHUT DOWN. THIS IS A SAFETY
DEVICE NOT A FAULT.
MAKE SURE THE HEATER RECEIVES ADEQUATE
VENTILATION WITHIN THE GREENHOUSE IN WHICH IT IS
BEING USED

9. Technical data
Country- Great Britain
(GB) GAS TYPE / G31
Pressure/ 37mbar
MODEL OUTPUT
LFS921P 2.0kW
LFS922P 4.2kW
IMAGES
SPARK IGNITION BUTTON
ODS -21100/267
Norm-EN461
CE 0464-12
CONSUMPTION INJECTOR
145 gr/h
305 gr/h
0.68
0.75-0.75
GAS VALVE
®