A five-alarm fire gutted the Concordia-Argonaut Club, a Jewish men’s social club here early Sunday morning, causing more than $2 million in damages. No one was injured. According to the preliminary report filed by San Francisco Fire Department investigator George Alboff, the fire was started when an unattended hot plate ignited adjacent combustibles in the third-floor dining room. There is no suspicion of arson. The Argonaut Club dates from 1853. It merged with the Concordia Club in 1939. The club has 900 members. Marvin Nathan is president.