If it has forced air it will discharge shirts, but typically belt speed is low for wb and discharge and capacity may drop, especially if you don't have a long tunnel in the oven. We went to a 20' tunnel with dual burners to keep up with 2 autos running large wb prints to match press output. Don't know what the cost of electricity is in your area but when we switched to gas fired ovens our electric bill dropped by 2/3. Gas fired ovens are better for wb and discharge and can obtain cure without scorching the shirts. On our electric oven the temp had to be so high to get discharge to work at press speeds that we burnt the shirts. Black shirts looked fine until you stretched the fabric and they ripped apart due to overheating of the fabric. White wb? Catalysts help, but real easy to scorch the shirt to get good cure. Fold over a wb white shirt and rub the ink on a white area, if you see color your cure is off. This was the biggest issue with our electric oven. Gas was so much easier and cheaper.
Al