Warnock Hersey 25-PAF, Installation And Operation Manual

Weekly Ash Removal 

Shut the unit down by pressing the “OFF” pad and allowing the unit to go through the complete 

shut down cycle. Allow the unit to completely cool down and then remove the ashes by pushing them 
into the ash pan and dumping them. {

NOTE

:  The 3” x 9” Ash Dump Door (the flat, rectangular piece of 

steel with a handle that is located directly above the ash pan) must be pulled out so the ashes from 
the burn pot area can be dropped into the ash pan.  Remember to replace it after dumping the ash 
pan and before restarting the stove.}  The ashes should be placed in a non-combustible container with 
an airtight lid and should always be placed on a non-combustible surface or on the ground until 
completely cooled and free of hot cinders. 
Once the ash is removed, the burn pot should be given a thorough inspection. Remove the burn pot 
wear plate and check for any build-up in the front of the burn area. Clean out all air holes (if necessary 
a 1/8” drill can be used) — these air holes should be kept clean, as they supply combustion air under 
and around the pellet fuel. 

Monthly Ash Removal 

     The large baffle plate (13” x 13”) that hangs behind the fire should be removed monthly. 
This can be done by lifting up the plate and pulling it out. The area behind this plate should 
be cleaned thoroughly and then the plate placed back in its original position.  The burn pot 
assembly should also be thoroughly cleaned, and the wear plate should be removed and 
cleaned.  Before replacing the wear plate, clean the burn box thoroughly. 
 

Annual Cleaning 

     The stove and the flue system should be given a complete cleaning at the end of the 
heating season.  Remove the burn pot assembly, clean it thoroughly, and re-install it (refer to 
Exploded View); this will require new gasket for the burn pot.  Be sure to tighten the set 
screws when you replace them, but do not over-tighten.  In addition to the cleaning 
mentioned earlier, the exhaust blower should be removed annually and the blower tube 
vacuumed of any ash build up. When cleaning or replacing the blower a new gasket (Part # 
PU-CBG) should be added between the blower flange and the steel exhaust tube.   
     Soot and Fly ash:  Formation and Need for Removal – The products of combustion will 
contain small particles of fly ash.  The fly ash will collect in the exhaust venting system and 
restrict the flow of flue gases.  Incomplete combustion, such as occurs during startup, 
shutdown, or incorrect operation of the room heater will lead to some soot formation which 
will collect in the exhaust venting system.  The exhaust venting system should be inspected 
at least once every year to determine if cleaning is necessary. 

MAINTENANCE 

CAUTION: UNPLUG THIS UNIT PRIOR TO ANY SERVICE WORK

. 

Parts Orders Only:  (800) 516-3636      Questions:  (800) 245-6489 
Note: To do any service on this unit the rear steel access panel must be     
           removed.  Eight (8) screws hold this panel to the rear of the stove. 
 
Auger Motors 

     The auger motor and gearbox are one complete assembly (PART #PU-047040) and can 
be removed by disconnecting the power leads and loosening the 

(

5

/

16

” head) 

set bolt in front 

of the assembly. This bolt tightens down on the flat side of the gear shaft and locks the gear 
shaft and auger shaft together — once the bolt is loosened, the entire assembly will slide 
from the locking collar. There are two motor assemblies on this unit and both rest on a shelf 
when not in operation. When replacing a motor the assembly should always be placed on the 
shelf prior to starting the stove.