Gasolec S4 Heater 1.75kW with Stainless Steel Filter

The S4 is a ceramic infrared brooder with a power rating of 1.75 kW (5,118 BTU/hr), and it can operate on either propane (LPG) or natural gas. When using propane, it usually consumes 126g/h. For natural gas, the flow rates vary between 0.158m³/h (high) and 0.189m³/h (low), depending on the jetting or version.

The S4 is supplied for propane at 50–150 mbar. See 750150.

Coverage varies widely with house insulation, ventilation, floor type and ambient temperature. Anywhere from 400 pheasant/hen chicks to 500 chicks, and up to 800 to 1,200 day‑old chicks for well‑insulated, favourable conditions. Treat these as indicative ranges, not guarantees.
Gasolec’s own guidance stresses that coverage is condition‑dependent; it’s best to size by temperature on the floor and add units as required.

The S-series heater comes standard with a stainless-steel (SS) air filter, but if your set up is dustier, you can opt for a Heavy Duty (HD) filter instead. Cleaning the filter regularly—during the cycle by hand and a deep clean between cycles—helps avoid incomplete combustion and keeps the heater working well. The S4 model features a thermo-electromagnetic flame-failure safety device. To ensure safe and reliable use, it's a good idea to perform regular checks and consult the problem checklist in the S-series manual.

Wondering about installation and mounting height? Typically, the S4 is mounted about 70–90 cm above the floor, but you can adjust this to achieve your desired floor temperature and comfort. Always follow the S4/S-series manual for installation, ventilation, and safe commissioning. Remember, gas heaters need to be installed by a qualified gas installer, with proper ventilation and leak checks done before you start using 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.

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 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 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 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.