Vermont Casting 2477CE 사용자 설명서

21

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Inspect for and remove ash build-up behind the com-
bustion package. This should be done in conjunction 
with annual cleaning of the chimney connector since 
this inspection is most conveniently done through the 
flue collar opening. Inspect the passages to either 
side of the combustion package (a mirror will be 
helpful) and vacuum away ash using a flexible vacu-
um hose inserted into each passage. Care should be 
taken not to damage the white fibrous material in this 
rear chamber. (Fig. 30)

 

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Inspect the chimney connector and chimney. Clean if 
necessary.

• 

Inspect the chimney and chimney connector. Pay 
particular attention to the horizontal runs of chimney 
connector, and the elbows. Clean the system if nec-
essary.

• 

Disassemble the chimney connector and take it 
outdoors for inspection and cleaning. Replace weak 
sections of connector.  

• 

Inspect the chimney for signs of deterioration. Re-
pairs to a masonry chimney should be made by a 
professional mason. Replace damaged sections of 
prefabricated chimney. Your local Dutchwest dealer 
or a chimney sweep can help determine when re-
placement is necessary.

• 

Thoroughly clean the chimney.

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Inspect and 

Vacuum Both 

Rear Corners

Ash Build-Up

ST876

Fig. 30  Inspect and clean out ash accumulation on either 
side of the non-catalytic combustion system.

Your stove is only one part of a system that includes 
the chimney, the operator, the fuel, and the home. The 
other parts of the system will affect how well the stove 
works. When there is a good match between all the 
parts, the system works well. 
Wood stove operation depends on natural (unforced) 
draft. Natural draft occurs when exhaust gas is hotter 
(and therefore lighter) than the outdoor air at the top of 
the chimney. The greater the temperature difference, 
the stronger the draft. As the hot exhaust gas rises out 
of the chimney, it generates suction that draws air into 
the stove for combustion. A slow, lazy fire when the 
stove’s air inlets are fully open indicates a weak draft. 
A brisk fire, supported only by air entering the stove 
through the air inlets, indicates a good draft. The inlets 
are passive; they regulate how much air can enter the 
stove, but they don’t force air into it. 
 The efficiency of a modern woodburning appliance, 
(in which the amount of air available for combustion is 
regulated), depends on the chimney to keep exhaust 
gases warm all the way outdoors. The characteristics 

of your chimney - whether it is steel or masonry, interior 
or exterior, matched or mismatched to the stove outlet, 
- determine how quickly it will warm up and how well 
it will sustain the optimum temperatures necessary to 
maintain strong draft and efficient combustion. Here fol-
lows a description of various flue system characteristics 
and the related effects on stove performance.

Although masonry is the traditional material used for 
chimney construction, it can have distinct performance 
disadvantages when used to vent a controlled-combus-
tion woodstove. Masonry forms an effective ‘heat sink’ 
- that is, it absorbs and holds heat for long periods of 
time.
The large mass, however, may take a long time to 
become hot enough to sustain a strong draft. The 
larger the chimney (in total mass), the longer it will take 
to warm up. Cold masonry will actually cool exhaust 
gases enough to diminish draft strength.  This problem 
is worse if the chimney is located outside the home or