Gasolec S8 Heater 3.5kW with Stainless Steel Filter

Coverage depends heavily on housing style, insulation, ventilation, floor type, and ambient temperature, so any figures are approximate.
Typical guidance for SA models for day‑olds covered ranges, e.g.:
SA2 roughly 100–200 day‑olds
SA4 roughly 250–500 day‑olds
SA8 roughly 500–800 day‑olds

Tools you need:

• Screwdriver for the reflector screws (removal/refit)
• A strong, wide pressing tool (wood or steel) to press the ceramic safely. Do NOT use a screwdriver for pressing (it can crack the stone)
• Brush/vacuum to clean dust and debris from the burner housing

Step-by-step: changing the set frames on an S Series Gasolec Heater:

1) Isolate gas, cool down, and work safely

Shut off the gas supply at the shut‑off valve and allow the heater to cool completely before you start.
Work in a well‑ventilated area; Gasolec heaters are intended for well‑ventilated buildings.

2) Remove the front parts to access the burner housing

Remove the reflector (undo the screws and take it off).
Lift off the steel grid/mesh (it sits in front of the ceramic stone).

Tip: When reassembling later, the reflector holes should be on the opposite side of the gas inlet. Make a note now (or take a photo).

3) Remove the clips and ceramic stone (to free the frame lists)

Remove the stone clips and thermocouple holder from the corners as shown in the Gasolec instructions.
Lift out the ceramic stone carefully and set it aside (or replace if damaged).
Clean the seating surface and remove any debris/remains so the new frames sit flat.

4) Remove the old frame lists
With the stone out, the frame lists can be pulled out from the burner housing edges. (You’ll typically find two “short” and two “long” frame lists.)

5) Fit the new S4 frame lists (the “set frames”)
Gasolec’s method is to build the frame/stone assembly back up in a controlled order:

• Fit a short frame list into the short side of the burner housing
• Fit a long frame list into the long side
• Place the ceramic stone against those two frame lists

The stone has a smooth side and a lumpy side — lumpy side must be up, facing the steel grid.
The stone also has holes closer to the edge on two sides, those sides are more fragile, so handle carefully.

Press the stone firmly against the fitted frame lists using a wide, strong tool (not a screwdriver).
Fit the next frame list into position by gently pressing it into the gap next to the stone and housing with a steel/wood tool.
Press the stone to create space and fit the final frame list, again gently pressing it into position.

6) Refit clips, mesh and reflector
Refit the stone clips + thermocouple holder in the corners as shown in the instructions.
Refit the steel grid/mesh, then the reflector, and tighten the screws.
Ensure the reflector hole orientation is opposite the gas inlet.

The regulator is faulty. It has probably been polluted with heavy-ends which is the name given to the muck that accumulates in gas cylinders over time and can build up in the regulator causing it to fail. The regulator needs to be replaced. Check the pressure specification which will be stated on the data plate on the brooder. Ensure that the replacement is of the correct pressure rating.

The electromagnet inside the flame failure valve has become faulty and needs replacing. This s a gas joint and therefore after youhave replaced the electromagnet the joint must be checked ith soapy water. Bubbles mean a leak - if you see bubbles remake the joint using a gas approved sealant.

The ceramic is either cracked or has moved on it's gasket. If the ceramic has cracked it will need to be replaced. If the ceramic is not cracked and has simply moved on it's gasket, it needs to be re seated on the fibre gasket. Ensure that the steel springs are in place and retighten the 4 screws using an 8mm spanner.

The problem will be the thermocouple, which is attached to the back of the flame valve. The tip of the thermocouple is in the heat, and hen the brooder is lit the tip heats up and generates a small electrical current that energises the electromagnet inside the flame failure valve, remove it from the brooder and replace it.

The gas and air are not mixing correctly. The cause could simply be dust in which case the filter needs to be cleaned and the brooder blown through with an air line. If the problem persists themnext step is to check the jet, which may be partially blocked. Jets can be cleaned out but never picked out. The easy way to clean a jet is to remove it from the brooder using an 8mm spanner and place the jet in a bottle with a little white spirit or cola drink. Shake the bottle well, remove the jet from the liquid and blow it out with an air line. Note that it is important to blow back towards the threaded end. Replace the jet. DO NOT OVER TIGHTEN. Check fo rleaks using soapy water. Bubbles mean a leak - if you see bubbles remake the joint using a gas approved sealant. Retest the brooder. If the problem persists then the regulator needs to be replaced. Check the pressure specification which will be stated on the data plate on the brooder. Ensure that the replacement reguator is of the correct pressure rating.