New Buck Corporation FS 21 Manuale Utente

Page 29 

 

 

 

 

 

 

 

 

Sluggish Heater

 

Obstruction in chimney

 

Check for and remove 
obstruction

 

 

Wet or unseasoned wood 
being burned. 

Burn dried natural seasoned 
hard wood. 

 

Poor chimney draft 

Improper chimney height or 
wrong size flue is being used.  
Cooler temperatures caused 
by external chimney. 

High Fuel Consumption 

Improper regulation of draft 
or inlet air 

(a)  Close inlet air control as 

much as possible to 
maintain desired heat 
output.   

(b) Check gaskets, reinstall 

fiberglass gasket around 
doors and glass as 
necessary 

 

Improper door fitting 

Check door gasket, check 
adjustment of door latch. 

Backpuffing Gusts 

of 

Wind 

Chimney may need wind 
diverts.  Raise chimney for 
better draft. 

Smoke rolls out when heater 
door is opened. 

Wind gusts blowing down the 
chimney 

Chimney may need wind 
diverts.  Raise chimney for 
better draft. 

 

Opening heater door too fast 

Crack door for 15 seconds 
before fully opening door.