Gas burner control unit IFS 135 B-10 Kromschroeder
Automatic gas firing devices IFS 135 B for high switching frequencies,
fully electronic, without restart option, Connection for external fault message
and remote release, 230/240 V ~, 50/60 Hz, DIN-DVGW approved
sec. A = start safety delay
sec. B/H = main gas/operation safety delay
sec. B/Z = ignition gas/operation safety delay
