Wood Moisture Content And Calorific Value; Storing And Drying Wood; Cleaning And Maintenance; Steel Cladding - HASE SENDAI PRO 165 Mode D'emploi

chimney, the better the combustion
quality.
During the transitional seasons (spring/autumn),
outdoor temperatures above 16°C can impair the
chimney draught. If a draught cannot be created at
these temperatures by rapidly burning paper or thin
wood shavings (quick fire), you should refrain from
lighting the stove.
14. Wood Moisture Content and Calorific
Value
Rule of thumb: the more damp the wood, the lower
the calorific value.
The calorific value of the wood depends largely on
the wood moisture content. The more moisture
the wood contains, the more energy expended
to evaporate it during the combustion phase; this
energy is then lost. The more damp the wood, the
lower its calorific value.
An example: freshly cut wood has a moisture content
of approx. 50% and a calorific value of around 2.3
kWh/kg; in contrast, wood which has been efficiently
air-dried has a moisture content of approx. 15% and
a calorific value of around 4.3 kWh/kg.
Accordingly, if you burn very moist wood, you will
have about half the thermal output with the same
quantity of wood. Furthermore, burning moist wood
results in substantial soot build-up on the fire box
window. Moreover, when moist wood is burned,
48
the resultant water vapour can condense in the
flue pipe or chimney, which can lead to a build up
of shiny soot on the chimney or chimney creosote.
Chimney creosote can cause unpleasant odours and
damage brick chimneys, while shiny soot poses a fire
hazard (chimney fire). In addition, if the wood has a
high moisture content, the combustion temperature
decreases, which prevents complete combustion of
all the wood components and causes considerable
environmental pollution.
You can use a wood moisture meter to determine the
residual moisture content of your firewood.

15. Storing and Drying Wood

Wood needs time to dry. If stored properly, it will air-
dry in approx. 2 to 3 years.
Saw, split, and store the wood ready for use; this
ensures rapid drying because smaller pieces of wood
dry better than larger, uncut logs.
Stack and store your wood logs in a ventilated
location that is as sunny as possible, ideally facing
south, and ensure that the wood is protected from
rain.
Leave a hand's width between the individual piles of
wood so that air can flow between them and carry
away any escaping moisture.
Do not cover your wood stacks with plastic sheeting
or tarpaulins; otherwise the moisture cannot escape.
Do not stack fresh wood in a cellar or basement,
since it will rot rather than dry due to the lack of
airflow.
Only store already dried wood in dry and well-venti-
lated cellar or basement rooms.

16. Cleaning and Maintenance

16.1 Steel Cladding

HASE stoves are coated with a heat-resistant open
pore lacquer that provides only limited corrosion
protection; accordingly, a rust film may develop in
some cases.
Do not use any detergents containing acid (e.g. cit-
rus or vinegar cleaners) to clean the steel parts. The
steel parts can be adequately cleaned by wiping
them down with a slightly moistened cloth.
Avoid using excessive water to clean the floor/floor-
plate. Any water that spills from kettles, boilers, or
dishes should be immediately mopped up.
Do not install the stove in "damp rooms", e.g. con-
servatories or winter gardens. Do not temporarily
store the stove in an unheated building shell or ga-
rage.
NOTE!
Treat areas covered in a rust film with the
original HASE Stove Lacquer Spray. Be
sure and follow the instructions on the
spray can. Your authorised HASE dealer
carries the stove lacquer spray and can
give you tips on using it.