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It is possible that the problem with your All Pro SPC 150T propane heater could be caused by a faulty gas regulator or pressure switch. The gas regulator controls the flow of propane while the pressure switch controls the temperature of the heater. You may need to replace the gas regulator or pressure switch in order to get your heater running again. Additionally, you could also check for any loose connections or clogs in the fuel line.
Are the propane tanks fitted with a pressure regulator?
The propane gas regulator is one of the most important parts of a propane gas system (or a compressed natural gas system as well).
The purpose of the regulator is to control the flow of gas and lower the pressure from the tank to the appliance(s) in the gas system.
The regulator not only acts as a control regarding the flow and distribution of propane (or CNS) but also as a safety barrier between the high pressure of the tank and the end use appliance(s).
Without it, you can cause serious damage to the appliance's gas valve and create a disaster- fire or explosion.
make sure it is a propane heater propane burns hotter than gas if not correct heater it will overheat if ok check gas pressure if not enough heater will overheat you also might have too small gas line and are emptying it
I know from working on piles of restaurant equipment, that when you change over from natural to propane, you have to change the orifices and the regulator. Most natural gas equipment needs 3.5-4.0" of W.C. (that is, water column) and most propane gas equipment needs 9.0-11.0" W.C. The density and specific gravity of the gases are different. If it is glued so as you can not make any adjustments to the pressure, change the regulator to a propane one. Most natural gas regulators can not be adjusted to the propane pressure needed. Please be careful as working with gas can be dangerous. Natural gas is usually lighter than air and will rise but propane is heavier and will "pool" or "puddle" in low areas and can cause explosions in the right circumstances.
Propane is liquid in your tank. The vapor pressure will depend on the temperature as you can see by the following chart. For an example at 0F the vapor pressure in the tank would be 24.5 psig. and at 90F it would be 150psig. This is why you draw vapor from the top of the tank and then go immediately go through a high pressure regulator. Then usually at the appliance there is also a regulator (sometimes incorporated in the safety valve) You are burning propane as a vapor not a liquid. Remember for safety that propane vapor is heavier than air and sinks to the floor, so one must be careful for proper ventilation. Temperature vs Vapor Pressure (oF) (oC) (psig) (bar) -44 1) -42.2 0 0 -30 -34.4 6.8 0.5 -20 -28.9 11.5 0.8 -10 -23.3 17.5 1.2 0 - 17.8 24.5 1.7 10 -12.2 34 2.3 20 -6.7 42 2.9 30 -1.1 53 3.7 40 4.4 65 4.5 50 10.0 78 5.4 60 15.6 93 6.4 70 21.1 110 7.6 80 26.7 128 8.8 90 32.2 150 10.3 100 37.8 177 12.2 110 43.3 204 14.1
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Hi,
You problem could be or probably is with the regulator...not enough gas
pressure...
you are on the right track. Disconnect the hose and check just the heater itself for obstructions. There should be an orfice that can be cleaned with a small needle. If this doesnt work, go to the pressure regulator and take off the cap. It will expose a screw for the adjustment on the gas pressure. Cw will increase the pressure and ccw will decrease the pressure. you have almost no adjustment on the primary air that is mixed with the gas so make sure you operate in a well ventilated area and watch for excessive black smoke. this is a sign of incomplete combustion of the gas and can be very dangerous
The problem is with the tanks or the pressure regulator.. Call your propane provider and tell them what is going on. they should come out and replace the regulator and check the gas line for kinks or partial blockage.
2. Provide an adequate gas supply.
This unit is pre-set to operate on 4" natural gas manifold
pressure. Aconvertible pressure regulator is connected to the
manifold and MUST be connected inseries with the gas supply
line. If the LP/Propane conversion kit has been used, follow
instructions provided with the kit for converting the pressure
regulator to LP/Propane use. The LP kit can be found on the
back side of the range (some models).
I yours does not have the kit on back go to sears to get one.
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