CFH -4000 Series Heater ManualRev. 01/2013 Page | 25Parts Drawings:CFH-4000-AI CLEAN FLOW HEATER – AIR INTERLOCKCFH-4000-AIDS DOUBLE STACK – CFH RESIN HEATERSCFH-4000-B BASIC CLEAN FLOW HEATERCFH-4000-DBS DOUBLE STACK – BASIC RESIN HEATERCFH-5000 BASIC HEATER CORE ASSEMBLYCFH-3050 PNEUMATIC PRE-HEAT SWITCH ASSEMBLY