HVACR gas heating esco Questions & 100% Verified Answers | Latest Update | Already Graded A+

using an ohmmeter, there is 120 VAC between high speed and ground wires, this indicates : open if temperature rise is too high... : increase fan speed how many of the 3 OSHA conditions defining confined spaces must be met : all 3 what causes the temperature limit safety switch to shut off the burner : fan motor failure flashback indicates : the gas is flowing slower than the speed at which burn is occurring what type of connector is used to control noise in ductwork 2 | P a g e : vibration eliminators if the main burner lights and after a minute the blower fan comes on but the burner flames waver in one corner... : there is faulty blower housing a burner orifice... : meters gas to the burner when lockout/tagout is used : there should be 1 key kept by the electrician the gas pressure is usually : 3.5 a spark igniter operates at : 7,500 vac a good thermocouple produces : 30 millivolts what must be present for combustion 3 | P a g e : air, fuel and ignit