• 39.25.1 Basic information28
• 39.25.3 Retrofitting/modification25
• 39.25.5 Stationary heater/auxiliary heating, complete3
• 39.25.11 Control unit/relay2
• 39.25.30 Heater5
• 39.25.46 Pump/container1
• 39.25.47 Exhaust system1
• 39.25.60 Preheating/heater booster3