3. HB 170:2002 2
PREFACE
This Handbook was developed to assist prospective purchasers, owners (users),
local government agencies, councils, builders, retailers and installers with guidance
for the selection, installation, operation and maintenance of solid fuel (wood)
heaters, together with information and guidance on issues that may arise from the
operation of these home heaters.
This Handbook incorporates Amendment No. 1 (December 2004) and Amendment No. 2
(June 2005). The changes required by the Amendment are indicated in the text by a marginal
bar and amendment number against the clause, note, table, figure or part thereof affected.
A1 This Handbook is not applicable to:
(i) Warm air distribution duction systems beyond the primary wall, floor or
ceiling penetration.
2
(ii) Appliances with flue outlets greater than 100 000 mm .
(iii) The long term durability of materials.
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There are environmental benefits in using a renewable fuel, such as wood.
However, concerns have been raised over the environmental impacts and health
issues related to wood heaters. If wood heaters are not installed and used in the
correct manner they can be a significant source of localized smoke and odour
problems, and particle pollution or haze during winter months.
Most air pollution problems associated with wood combustion can be prevented or
minimized by using correct fuel, correct burning practices, and in the case of
installing a new wood heater, selecting a certified, emission-tested wood heater
sized appropriately for the situation. However, there are some locations where
there will be limitations on the suitability of wood burning for home heating
because of the topography or potential of air inversions.
The home heating industry is continuing to address concerns about emissions from
wood heaters in a number of ways. These include:
(a) Insisting on the implementation of relevant Standards regarding particle
emission levels and installation safety.
(b) Training programs for installers and inspectors to provide consumers with
dependable service.
(c) Increasing the use of community education programs outlining steps to
reduce emissions.
(d) Preparing this Handbook, which primarily targets the retailer and installer,
also offers guidance to government, councils and others interested in wood
heating.
Modern homes have become more energy efficient, with better levels of insulation,
more effective air barriers, and seals on windows and doors. These changes have
made our homes easier to heat, but have also meant that wood heaters must be
more carefully designed so that they will function correctly in the tightly sealed
home environment.
The keys to safe, successful and efficient wood burning are good planning, correct
installation and proper operation. This document is intended to assist in planning
an appropriate installation and operating the heater in the safest and most efficient
manner.
4. 3 HB 170:2002
Relevant sections of the text of AS/NZS 2918:2001, Domestic solid fuel burning
appliances—Installation are included in boxes to assist the reader. This Handbook is
not intended to add to or diminish the requirements of AS/NZS 2918:2001, and
does not contain mandatory requirements.
Acknowledgement
This Handbook is a joint project between the Australian and New Zealand Home
Heating Associations, Environment Australia, The Ministry for the Environment—
New Zealand and Standards Australia/Standards New Zealand Committee CS-062,
Solid Fuel Burning Appliances. Financial support has been gratefully received from
the Minister for the Environment’s Sustainable Management Fund, which is
administered by the Ministry for the Environment New Zealand.
The contribution of all organizations involved is gratefully acknowledged.
References
The following documents are referred to in this Handbook:
AS/NZS 2918, Domestic solid fuel burning appliances—Installation
AS/NZS 4012, Domestic solid fuel burning appliance—Method for determination of
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power output and efficiency
AS/NZS 4013, Domestic solid fuel burning appliances—Method for determination
of flue gas emission
Building Code of Australia
New Zealand Building Code, Clause C1—Outbreak of Fire
5. HB 170:2002 4
CONTENTS
SECTION 1 ENVIRONMENTAL IMPACTS OF WOOD BURNING FOR HOME
HEATING
Particle pollution ................................................................................................................ 5
Toxic air pollutants............................................................................................................. 6
Low-emission wood burning technology ........................................................................ 6
Greenhouse gases ............................................................................................................... 6
Indoor air pollution ............................................................................................................ 6
Neighbours.......................................................................................................................... 6
Understanding how a wood heater is intended to operate............................................ 7
Key environmental considerations ................................................................................... 8
SECTION 2 SELECTING THE WOOD HEATER
Wood heaters location........................................................................................................ 9
Freestanding wood heaters.............................................................................................. 11
Fireplace inserts ................................................................................................................ 13
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Heat circulating fireplaces ............................................................................................... 14
Built-in applicances .......................................................................................................... 14
Positioning of the heater .................................................................................................. 14
Size selection ..................................................................................................................... 16
Practical considerations ................................................................................................... 17
Air transfer systems.......................................................................................................... 19
Home insulation ............................................................................................................... 20
SECTION 3 INSTALLATION
Liability.............................................................................................................................. 21
Basic requirements............................................................................................................ 21
Freestanding heaters ........................................................................................................ 22
Floor protection................................................................................................................. 33
Flue systems ...................................................................................................................... 33
Particular requirements for individual heaters ............................................................. 40
Installing second hand heaters........................................................................................ 53
Loose fill insulation .......................................................................................................... 54
Wall penetration ............................................................................................................... 54
Replacing older wood heaters ......................................................................................... 55
Interaction between house and flue system................................................................... 55
SECTION 4 OPERATION OF WOOD HEATERS
General............................................................................................................................... 57
Starting a new fire............................................................................................................. 57
Rekindling a fire from charcoal or embers..................................................................... 58
Useful tips.......................................................................................................................... 59
Purchasing firewood ........................................................................................................ 62
Protection of the environment......................................................................................... 63
SECTION 5 WOOD HEATER MAINTENANCE
Preventing creosote build-up .......................................................................................... 64
Heater care ........................................................................................................................ 64
Flue cleaning and maintenance....................................................................................... 65
Safety tips .......................................................................................................................... 66
Home safety....................................................................................................................... 68
6. This is a free preview. Purchase the entire publication at the link below:
HB 170:2002 Wood Heating Resource Handbook
Guide to the Selection, Installation and Operation
of Wood Heaters
This is a free 5 page sample. Access the full version online.
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