Operating instructions, Recommended fuels 9. burning performance – Stovax RVF40AVH User Manual

Page 8

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8

OPERATING INSTRUCTIONS

8.1

Wood:- Burn only seasoned timber, with a moisture

content of less than 20%. In most cases this would require

drying cut wood for 12 to 18 months before use. Poor

quality timber could cause low combustion efficiency,

produce large amounts of harmful condensation, which

could reduce the effectiveness of the airwash system, and

ultimately the life of the stove Do not burn painted,

impregnated wood or manufactured board products.

The symptoms of poor performance related to wet wood

include:-

• Difficulty getting a fire going and keeping it burning well,

• Smoky fires with little flame,

• Dirty glass,

• Rapid creosote build-up in the chimney,

• Low heat output,

• Short burn times, excessive fuel consumption and

blue/grey smoke from the chimney.

To help avoid large build-ups of tars and creosote within

the stove and the flue system, it is recommended to burn at

high output for at least 30 minutes each day. The use of

Stovax Protector chimney cleaner will also help to reduce

this problem.

8.2

Solid fuel:- Burn manufactured smokeless fuels, or

anthracite, listed as suitable for use with closed heating

stoves. Do not burn ‘petro-coke’ or other petroleum

based fuels, as this will invalidate and product

guarantee.

8.3

Fuel consumption: -

Wood:- Approximately 1.8 kg per hour of fuel under ideal

conditions with the Airwash control fully OPEN and the

Primary air control fully CLOSED.

Solid Fuel:- Approximately 0.7 kg per hour of fuel under

ideal conditions with the Airwash control fully CLOSED and

the Primary air control fully OPEN.

If you require advice on suitable solid fuels contact your

local Approved Coal Merchant. Details can be obtained by

ringing the Solid Fuel Association advice line on Freephone

0800 600 000. Or their web site at www.solifuel.co.uk

A number of factors can effect the performance of the

Stockton stove. Some of these are listed.

Fuel Quality (Wood)

Use only seasoned wood with a moisture content of less

than 20%. Symptoms of poor performance related to wet

woods include: -

difficulty getting a fire going and keeping it burning well,

smoky fires with little flame,

dirty glass,

dirty firebricks

rapid creosote build-up in the chimney,

low heat output,

Short burn times and blue/grey smoke from the chimney.

Fuel Quality (Solid Fuel)

Use only recommended solid fuels, which are approved for

use with closed appliances. Symptoms of poor performance

related to unsuitable fuels include: -

difficulty getting a fire going and keeping it burning well,

smoky fires with little flame,

dirty glass,

dirty firebricks

short life span for grate, baffles and internal firebricks,

permanent staining of glass.

Flue Draught

The chimney has two main functions, which are, to safely

remove the smoke, gases and fumes from the house, and to

provide a sufficient amount of draught (suction) in the

Stockton stove to ensure that the fire is kept burning.

Draught is caused by the rising hot air in the chimney when

the Stockton stove is lit.

Symptoms of poor performance related to flue draught

include: -

excessive fuel consumption (high flue draught)

poor burning control, overheating (high flue draught)

wind noise from air controls (high flue draught)

difficulty getting a fire going and keeping it burning well

(low flue draught)

low heat output (low flue draught)

smoke entering room when doors opened (low flue

draught)

8. RECOMMENDED FUELS

9. BURNING PERFORMANCE

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