HWAM 4110, User Manual

Page 12 of 20 pages

cm above the ridge. If the chimney is placed at side walls, the top of the chimney should always be higher 
than the ridge or the tallest point of the roof. Always be aware of any national and/or local regulations 
applying to thatched roofs and the location of the chimneys.
The stove requires a draft of at least 12 Pa.

The chimney must have a minimum clearing of Ø 150 mm. The chimney must be provided with an 
easily accessible cleaning door. The chimney and flue duct must be of flue class T400 and be CE marked. 
Furthermore, it must have obtained the classification of G in soot fire testing. The required distance to 
combustible material must be complied with in accordance with the brand label. Ask your HWAM retailer 
for further information.

Connection to chimney

All the stoves have both rear and top smoke outlet that can be connected to an approved steel chimney on 
top or directly out at the rear to a chimney.

Make sure that the chimney is tight and that no false draft is caused around neither the cover plate, in 
connection with a covered smoke outlet, nor the cleanout door and pipe connections. Please note that 
bent and/or horizontal smoke pipes will reduce the effect of the chimney draft.

Vertical cross-section of smoke flue (Drawing B and C)
B:  Top smoke outlet
C:  Rear smoke outlet
•  Steel chimney (9).
•  Flue gas elbow (10). Fits into smoke flue socket.
•  Brick-built jamb of flue (11).
•  Built-in pipe sleeve (12). Fits smoke flue.
•  Wall rosette (13). Covers disruption to wall around pipe sleeve.
•  Joint (14). Sealed with packing material.
•  Smoke outlets (15) of the HWAM stove.
•  Smoke flue regulating damper (16).
•  Soot door (17).

Fitting the loose parts

Before the stove is installed, you must ensure that all loose parts are fitted correctly. Check that all insula-
tion plates of the combustion chamber have been properly placed, i.e. that the bottom plate is horizontal 
and that the side plates are vertical and reach all the way up to the steel sides of the combustion chamber 
and down to the bottom plate.

Vertical cross-section of the stoves (Drawing B, C and D):
•  The smoke shelf (5). To be placed on top of the steel rail and on the holders in the sides
•  Two-piece smoke defector plate (6). Each half is hung on the hooks located beneath the top plate. The two 

halves join in the holders (7a) behind the air pipe. Once the stove has been installed, remove the safety 
fittings for transportation (7b) from the two hooks

•  Rear plate (2a), covering HWAM

®

 Autopilot™. This must always be mounted if the stove is placed 

next to a combustible wall

Chimney

The chimney is the “engine” of the stove and it is crucial for the functioning of the woodburning stove. 
The chimney draft provides a partial vacuum in the stove. This vacuum removes the smoke from the stove, 
sucks air through the dampers for the so-called glass pane rinse which keeps the glass free of soot, and 
sucks in air through both primary and secondary dampers for the combustion.