Vogelzang International 1500 - Manual (Page 21)

VGZ-018 / 051809.0 NORSEMAN™ 1500/2500 FuRNAcE / Page 21
Fig. 21 – Add-on
plenum Backdraft
Flapper
iNstAllAtioN ARRANgEMENts continued …
Fig. 20 – Add-on
optional plenum
Collector
NotE: to prevent damage from overheating, backdraft Dampers MUst be used and
installed no closer than 18 inches to the top surface of the furnace.