Tải bản đầy đủ
TABLE 5. 5 CLEARANCE TO COMBUSTIBLE MATERIAL ABOVE OVERHEAD RADIANT HEATERS

TABLE 5. 5 CLEARANCE TO COMBUSTIBLE MATERIAL ABOVE OVERHEAD RADIANT HEATERS

Tải bản đầy đủ

AS 5601 – 2000
AG 601 – 2000

98

5.12.11.1 Prohibited locations
A direct-fired air heater shall not be installed in –
(a)

a residential premises;

(b)

any type of hospital; or
NOTE: A nursing home, rest home, convalescent home, sanatorium, rehabilitation
centre and centre for the mentally handicapped is to be considered a hospital.

(c)

a classroom, lecture room or office in an educational institution.
NOTE: A school, college or the like, kindergarten, pre-school centre, child minding
centre or infant welfare centre is to be considered as an educational institution.

5.12.11.2 Restriction on air supply
The air supply for a direct-fired air heater shall be provided directly from outside.

5.12.12 Overhead radiant tube heater

Licensed to LUU MINH LUAN on 26 Feb 2002. Single user licence only. Storage, distribution or use on network prohibited.

NOTES:
1 Where a multi-burner system with a common fan is to be installed, the Authority may
require to be specifically advised prior to the commencement of any work.
2 Table 5.4 may apply to this Clause.

5.12.12.1 Requirements
contaminated

for

an

installation

where

atmosphere

is

Where a heater is to be installed in an area where excessive dust or lint or any
flammable vapours are present, the following shall apply:
(a)

Combustion air is to be ducted from outside.

(b)

The flue is to be extended to outside.

NOTE: The Authority should be consulted as in some instances this flueing requirement
may not be necessary.



5.12.12.2 Clearances required around the heater
The following clearances around the heater shall apply:
(a)

There is to be sufficient clearance from a combustible surface or electrical
wiring to ensure that, with continuous operation of the heater, the surfaces or
wiring will not exceed 65°C above ambient.

(b)

The heater is to be clear of any sprinkler system, overhead crane or other
area where damage or interference to the heater may occur.

5.12.12.3 Heater supports to be adequate
Heater supports (including chains) shall be adequate for the purpose.

5.12.12.4 Requirements where heater is to be supported by chains
Where the heater is to be supported by chains, the final gas connection shall be
either of the following:
(a)

A hose assembly.

(b)

Annealed copper tube that is formed into a loop.

NOTE: This requirement is necessary to prevent vibration from the heater being imparted
to the consumer piping.

5.12.13 Decorative gas log fire
NOTE: Refer to Clause 5.3.1 when selecting a location for these appliances.

COPYRIGHT

99

AS 5601 – 2000
AG 601 – 2000

✴ 5.12.13.1 Prohibited appliances
A decorative gas log fire that has gas consumption exceeding 72 MJ/h shall not be
installed.

5.12.13.2 Ventilation requirements
An opening directly to outside with a minimum free ventilation area of no less than
the equivalent cross-sectional area of the flue cowl shall be provided for each
decorative gas log fire.

Licensed to LUU MINH LUAN on 26 Feb 2002. Single user licence only. Storage, distribution or use on network prohibited.

NOTES:
1 When used in this Clause, the term ‘directly to outside’ means any one of the
following options, provided that the ventilation path is unobstructed by building
material or insulation:
(a)
Directly through an outside wall (preferred option).
(b)
Through to an outside wall but offset.
(c)
Into a cavity ventilated to outside.
(d)
Into an underfloor space ventilated to outside.
(e)
Into a roof space ventilated to outside.
2 The chimney in which the appliance is installed is not to be considered as a
ventilation opening.

✴ 5.12.13.3 Requirements for fireplace and chimney for Type1 log fires
The fireplace and chimney for a Type 1 decorative gas log fire shall be noncombustible and the chimney shall have a minimum cross-sectional area of 400 cm2
or as otherwise specified by the manufacturer.
The adequacy and effectiveness of any fireplace or chimney into which a decorative
gas log fire is installed shall be checked before and after installation. There shall
be no significant spillage of flue gases from the fireplace or flue under stabilised
operating conditions.
NOTES:
1 A smoke candle or other suitable device should be used.
2 Local building Standards give requirements for the construction of hearths, chimneys
and fireplaces in which these appliances can be installed.

5.12.13.4 Damper not permitted in chimney or flue
A damper shall not be fitted in a chimney, flue or on any fire box associated with the
installation of a decorative gas log fire . Any damper which is already in existence
shall either be removed or permanently fixed in the fully open position.

5.12.13.5 Flue cowl required
A chimney or flue used with a decorative gas log fire shall be fitted with a flue cowl
which –
(a)

for a Type 1 decorative gas log fire, is at least 225 mm in diameter or as
otherwise specified by the manufacturer; or

(b)

for a Type 2 decorative gas log fire, is the same nominal diameter as the flue .

5.12.14 Laundry dryer
NOTE: ‘Exhaust duct’, when related to a laundry dryer, is defined as a duct connected to
a laundry dryer for the removal of air, water vapour and combustion products to a
discharge point outside the building. The removal of the combustion products is a minor
aspect of its function.

COPYRIGHT

AS 5601 – 2000
AG 601 – 2000

100

5.12.14.1 Exhaust duct required
An exhaust duct shall be fitted where any of the following apply:
(a)

The gas consumption of the dryer is in excess of 10 MJ/h.

(b)

A dryer is installed in a bedroom or a bathroom.

NOTE: See Clause 5.3.1.

5.12.14.2 Exhausting into a room or enclosure
Where a dryer with a gas consumption of 10 MJ/h or less, other than those in
Clause 5.12.14.1(b), exhausts into a room or enclosure , the room or enclosure shall
be ventilated.
The minimum ventilation required shall be 260 cm2 for each dryer, half to be
provided within 300 mm of the floor and the remainder within 300 mm of the ceiling.

5.12.14.3 Exhaust duct requirements

Licensed to LUU MINH LUAN on 26 Feb 2002. Single user licence only. Storage, distribution or use on network prohibited.

An exhaust duct shall –
(a)

be of a material which is acceptable to the Authority and has a smooth internal
surface;

(b)

discharge to outside atmosphere in accordance with the manufacturer’s
instructions and its discharge outlet is to be unrestricted during operation; and

(c)

where the length exceeds 900 mm, have provision near the appliance for the
removal of lint from the duct.

5.12.14.4 Exhaust duct not to be combined with a flue
An exhaust duct shall not be combined with a flue from another appliance .

5.12.14.5 Combining of exhaust ducts
Where exhaust ducts from dryers are to be combined, the ducting shall be sized in
accordance with the manufacturer’s instructions.

5.12.14.6 Dryers for community use – Operating instructions to be
displayed
A dryer installed for community use shall have operating instructions permanently
displayed in a prominent position.

5.12.15 Gas light
5.12.15.1 Required clearances between enclosed lights and combustibles
There shall be a minimum clearance of 450 mm vertically and 125 mm horizontally
between an enclosed bracket light or pendant light and any combustible material.

5.12.15.2 Supporting of an internal pendant light
An internal pendant light shall be supported independently of the consumer piping .

5.12.16 Incinerator
NOTE: Because of combustion and flueing considerations it is not unusual for an
incinerator to be installed without a draught diverter. The manufacturer’s instructions
detail requirements for such installations. In some areas, fire authorities and local
environmental authorities have regulations for these type of appliances. These authorities
should be contacted before commencing an installation. Some flueing requirements for
incinerators are detailed in Clause 5.13.8 of this Standard.

COPYRIGHT

101



5.12.16.1 Required
incinerator

clearances

to

AS 5601 – 2000
AG 601 – 2000

combustible

surfaces

around

an

The maximum surface temperature of any combustible surface around an
incinerator shall not exceed 65°C above ambient, but in no case shall the
clearances to combustible surfaces be less than those given in Table 5.6.

TABLE 5.6
CLEARANCES TO COMBUSTIBLE SURFACES AROUND AN INCINERATOR
Minimum clearance to
combustible surface

Part of incinerator

mm
Sides and top

1000

The front

1050

Horizontal surface above the charging door

1200
(see Notes)

Licensed to LUU MINH LUAN on 26 Feb 2002. Single user licence only. Storage, distribution or use on network prohibited.

NOTES:
1

The clearance to the horizontal surface above a charging door may be reduced to 600 mm
provided that surface is protected. The protection required is to be at least equal to that given by
0.4 mm sheet metal spaced out 25 mm by non-combustible spacers. The protection is to extend
at least 450 mm beyond all sides of the charging door.

2

An incinerator that is designed to retain the flame within the appliance during loading is exempt
from the minimum clearance above the charging door.

5.12.16.2 Operating instructions to be displayed
Operating instructions shall be permanently displayed in a prominent position
adjacent to the incinerator. These instructions shall detail types and quantities of
waste that may be incinerated, and the cleaning instructions.

5.12.17 Pottery kiln
NOTE: Because of combustion and flueing considerations it is not unusual for a pottery
kiln to be installed without a draught diverter. The manufacturer’s instructions detail
requirements for such installations. Some Local Councils have requirements for the
installation of these appliances. The relevant Council should be contacted prior to the
commencement of any work. Some flueing requirements for pottery kilns are detailed in
Clause 5.13.9 of this Standard.

5.12.17.1 Support to be non-combustible and of adequate strength
The floor or supports on which the kiln is to be installed shall be non-combustible
and of adequate strength for the fully loaded kiln.

5.12.17.2 Flame safeguard system required
A pottery kiln burner system shall be fitted with a flame safeguard system in
accordance with AS 3814 / AG 501 .

5.12.17.3 Clearances between a hood or canopy and combustible material
There shall be a clearance of at least 450 mm between the canopy, hood and
ducting, and any combustible material, unless the material is adequately protected.

5.12.18 Refrigerator
NOTE: Where a refrigerator is to be installed in a combined living and sleeping area,
other than in a caravan or marine craft, the Authority may require to be specifically
advised prior to the commencement of work.

COPYRIGHT

AS 5601 – 2000
AG 601 – 2000

102

5.12.18.1 Prohibited locations
A refrigerator shall not be located in a pantry, larder or bedroom unless installed in
accordance with Clause 5.12.18.4.

5.12.18.2 Floor to be adequate to support refrigerator
The floor on which the refrigerator is to be installed shall be of adequate strength to
support the appliance and its contents.

5.12.18.3 Required clearances
Where not otherwise given in the manufacturer’s installation instructions the
following minimum clearances shall apply:
(a)

50 mm from the back wall; and

(b)

300 mm above the flue outlet.

5.12.18.4 Requirements where refrigerator is to be in a sealed recess

Licensed to LUU MINH LUAN on 26 Feb 2002. Single user licence only. Storage, distribution or use on network prohibited.

Where a refrigerator is to be installed in a sealed recess, the recess shall have two
openings to outside. One opening shall be located at the top of the recess and the
other at the bottom. The free ventilation area of each opening shall comply with
Table 5.7.
NOTE: This requirement provides ventilation to ensure proper operation of the
refrigeration unit and includes an allowance for the combustion air requirements of
Clause 5.4.

TABLE 5.7
VENTILATION FOR A REFRIGERATOR IN A SEALED RECESS
Refrigerator
storage capacity
L

Minimum free
ventilation area
2
cm

Not exceeding 100

325

Exceeding 100 and not exceeding 200

450

Exceeding 200

650

5.12.18.5 Requirement for annealed copper tube connection
Where annealed copper tube is to be used for the final gas connection to the
refrigerator, the tube shall be formed into a loop.
NOTE: This is necessary to avoid work hardening of the tube due to flexing from vibration
caused by door operation.

5.12.19 Type B appliances
5.12.19.1 Installation requirements
The installation of a Type B appliance shall comply with the requirements of this
Standard where relevant.
NOTES:
1 See Clause 5.1.2
2 AS 3814 / AG 501 also details additional installation requirements for specific Type B
appliance installations.

COPYRIGHT