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TABLE 5. 8 REQUIRED CLEARANCE BETWEEN A SINGLE WALL METAL OR FIBRE CEMENT FLUE AND A COMBUSTIBLE SURFACE

TABLE 5. 8 REQUIRED CLEARANCE BETWEEN A SINGLE WALL METAL OR FIBRE CEMENT FLUE AND A COMBUSTIBLE SURFACE

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AS 5601 – 2000
AG 601 – 2000

108

FIGURE 5.2 METHODS OF PROTECTING A COMBUSTIBLE SURFACE
Method (a)

Method (b)

Method (c)
25 mm space

Flue

Flue

Flue

Sheet metal
(0.4 mm)
Minimum

Sheet metal
(0.4 mm)
clearance

Minimum

clearance
Minimum

25 mm

Combustible material

clearance

space

Combustible material

Combustible material

Fire resistant material
(Minimum thickness 6 mm)

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5.13.5.10 Protection of adjacent non-combustible materials from heat of
flue
Where a flue is fitted within a wall or partition made of non-combustible material,
provision shall be made to prevent the temperature of the wall or partition external
surfaces exceeding 50°C above ambient.
NOTE: This requirement is to protect materials on or near the external surface of the wall
or partition.

5.13.6 Terminating a flue – Location
NOTE: For the location of a flue terminal on a caravan or marine craft refer to
Clause 6.2.6.5 or 6.3.6.7 as appropriate.

5.13.6.1 The termination point
downdraught

of

a flue to be

located

to avoid

The termination point of a flue shall be so located in relation to neighbouring
structures that wind from any direction will not be likely to create downdraught in
the flue or chimney.

5.13.6.2 Terminating a flue above a roof
Where a flue is to terminate above –
(a)

a roof, the end of the flue shall be at least 500 mm from the nearest part of the
roof;

(b)

a trafficable roof designed for personal or public use, the end of the flue shall
be at least 2 m above the roof level. This dimension is to be increased where
necessary so that a minimum distance of 500 mm is maintained above any
surrounding parapet; or

(c)

a chimney, the end of the flue shall be at least 200 mm from the nearest part
of the chimney.

NOTES:
1 This distance is measured before the cowl (if required) is fitted to the end of the flue.
2 In respect to a roof, the distance may not apply where the flue is equipped with a
device, acceptable to the Authority, which will ensure effective flueing is achieved
with a lesser clearance to the roof.
3 This Clause does not apply in situations covered by Clause 5.13.6.5.

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AS 5601 – 2000
AG 601 – 2000

5.13.6.3 Location of a power flue terminal
A power flue shall terminate in accordance with Clause 5.13.6.2 or 5.13.6.5 as
appropriate.

5.13.6.4 Location of flue terminal
Except where Clauses 5.13.6.5 or 5.13.6.7 apply, a flue terminal shall be –



(a)

at least 1 m horizontally from a neighbouring structure; or

(b)

if less than 1 m horizontally from a neighbouring structure, at least 500 mm
above that structure;

(c)

at least 1.5 m from any opening into a building; and

(d)

at least 200 mm from another flue terminal.

5.13.6.5 Location of a flue terminal of a balanced flue appliance, fanassisted flue appliance, room-sealed appliance or an outdoor appliance

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The location of the flue terminal of a balanced flue appliance , fan-assisted flue
appliance, room-sealed appliance, or an outdoor appliance shall comply with
Fig.5.3.

5.13.6.6 Balanced flue terminal, room-sealed appliance
terminal of an outdoor appliance under a covered area

terminal or

Where the flue terminal of a balanced flue appliance , a room-sealed appliance or
the flue terminal of an appliance designed for outdoor installation is to be installed
under a covered area:
(a)

the covered area is to be open on at least two sides; and

(b)

the terminal is to be located to ensure a free flow of air across it is achieved.

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AS 5601 – 2000
AG 601 – 2000

110

FIGURE 5.3 MINIMUM CLEARANCES REQUIRED FOR BALANCED FLUE
TERMINALS, FAN-ASSISTED FLUE TERMINALS, ROOM –SEALED APPLIANCE
TERMINALS OR THE TERMINALS OF OUTDOOR APPLIANCES



a

j

h
j

j

openable
window

k

e
P

h

door

See note 3

d
g

d
M

I

c

e

h

n
f

c

T

T

b

g

k

T
See note 2

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T = Flue terminal
I = Mechanical air inlet

Ref.
a

b
c
d
e
f
g
h
j

k
n

M = Gas meter
P = Electricity meter
or fuse box

Shading indicates prohibited
areas for flue terminals

Minimum clearances
(mm)
Natural
Fan
draft
assisted

Item

Below eaves, balconies and other projections:
300
200
• Appliances up to 50 MJ/h input
500
300
• Appliances over 50 MJ/h input
From the ground, above a balcony or other surface ✝
300
300
From a return wall or external corner ✝
500
300
From a gas meter (M) (see 4.7.11 for vent terminal location of regulator)
1000
1000
From an electricity meter or fuse box (P)
500
500
From a drain pipe or soil pipe
150
75
Horizontally from any building structure ✝ or obstruction facing a terminal
500
500
From any other flue terminal, cowl, or combustion air intake ✝
500
300
Horizontally from an openable window, door, non-mechanical air inlet, or any other opening into a
building with the exception of sub-floor ventilation:
500
300
• Appliances up to 150 MJ/h input
1500
500
• Appliances over 150 MJ/h input up to 200 MJ/h input
1500
1500
• Appliances over 200 MJ/h input
1500
• All fan-assisted flue appliances, in the direction of discharge
From a mechanical air inlet, including a spa blower
1500
1000
Vertically below an openable window, non-mechanical air inlet, or any other opening into a building
with the exception of sub-floor ventilation:
150
150
• Space heaters up to 50 MJ/h input
500
500
• Other appliances up to 50 MJ/h input
1000
1000
• Appliances over 50 MJ/h input and up to 150 MJ/h input
1500
1500
• Appliances over 150 MJ/h input
✝ - unless appliance is approved for closer installation
NOTES:
1 All distances are measured to the nearest part of the terminal.
2 Prohibited area below electricity meter or fuse box extends to ground level.
3 See Clause 5.13.6.6 for restrictions on a flue terminal under a covered area.
4 See Appendix J, Figures J2(a) and J3(a), for clearances required from a flue terminal to an LP
Gas cylinder. A flue terminal is considered to be a source of ignition.
5 For appliances not addressed above, approval shall be obtained from the Authority.
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AS 5601 – 2000
AG 601 – 2000

5.13.6.7 Terminating a flue in a roof space
A flue is permitted to terminate in a roof space subject to all of the following:
(a)

The appliance is not a decorative gas log fire , incinerator, pottery kiln or other
Type B appliance .

(b)

The total gas consumption does not exceed 80 MJ/h.

(c)

The total gas consumption of all appliance(s) to be flued into the roof space
does not exceed 3 MJ/h per cubic metre of roof space.

(d)

Ventilation is provided into the roof space by –
(i)

in the case of an unsealed roof, the normal air gaps between the tiles; or

(ii)

in the case of a sealed roof, two openings located on opposite sides or
ends of the roof, each with a minimum free ventilation area of 500 cm2.

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NOTE: A sealed roof includes; tiling with sarking or other insulating material
under the tiles, metal decking, corrugated roofing or any other roofing method
which does not allow sufficient roof ventilation.

(e)

The flue is to terminate at least 500 mm from any combustible material or part
of the building structure.

(f)

Where the flue is to terminate less than 1 m from a metal clad roof, a metallic
deflector plate not less than 600 mm x 600 mm is to be fitted above the flue
terminal to the underside of the rafters.

5.13.7 Use of existing flue or chimney
NOTE: Refer to Clause 3.2.6 for acceptable flueing materials.

5.13.7.1 Any existing fault to be rectified
A chimney or flue which did not operate satisfactorily with another fuel shall not be
used for flueing a gas appliance until after examination and the correction of any
fault(s).
NOTE: Common problems with existing flues and chimneys can be downdraught or poor
design which causes smoke or combustion products to enter into the room.

5.13.7.2 Clearing and checking an existing chimney and flue
An existing chimney or flue that has been used for fuel other than gas shall –
(a)

be swept clear of soot and other loose material;

(b)

be checked for soundness of construction and freedom from leakage; and

(c)

be checked for adequate size as specified in Appendix H.

5.13.7.3 Damper plate in chimney or flue
Any damper plate shall only be fitted as necessary and in accordance with the
manufacturer’s installation instructions.
NOTE: See also Clause 5.12.13.4.

5.13.8 Flueing of an incinerator
A flue connected to an incinerator shall comply with the following as appropriate:
(a)

Terminate to outside atmosphere in a location relative to neighbouring
structures that wind from any direction will not be likely to create downdraught
in the flue .

(b)

Not be interconnected with the flue from any other type of appliance .

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AS 5601 – 2000
AG 601 – 2000

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(c)

Where two or more incinerator flues are to be combined, the Authority shall be
consulted prior to commencement of work.

(d)

If constructed of metal other than stainless steel –

(e)

(f)

(i)

be accessible for visual examination for the entire length; and

(ii)

the metal shall be at least as durable as 1.5 mm mild steel.

Have provision for the removal of ash –
(i)

in any lateral run of flue exceeding 3 m; and

(ii)

in any vertical flue exceeding 900 mm.

If constructed of masonry there is to be a minimum clearance of 300 mm to
combustible material. This clearance may be reduced if the combustible
material is shielded or protected. In no case is the surface temperature of the
combustible material to exceed 50°C above ambient.

5.13.9 Flueing of a pottery kiln

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A flue connected to a pottery kiln shall comply with the following as appropriate:
(a)

Terminate to outside atmosphere in a location relative to neighbouring
structures that wind from any direction will not be likely to create downdraught
in the flue .

(b)

Not be interconnected with the flue of another appliance .

(c)

If constructed of metal other than stainless steel –
(i)

be accessible for visual examination for the entire length; and

(ii)

the metal shall be at least as durable as 1.5 mm mild steel.

(d)

If constructed of masonry there is to be a minimum clearance of 300 mm to
combustible material. This clearance may be reduced if the combustible
material is shielded or protected. In no case is the surface temperature of the
combustible material to exceed 50°C above ambient.

(e)

If fitted with a damper, the damper is not to be fully closed with the burner
operating and is not to cause an unsafe condition in any position.

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AS 5601 – 2000
AG 601 – 2000

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SECTION 6 - CONTENTS
LP GAS SYSTEMS
6.1

LOCATION AND INSTALLATION OF LP GAS STORAGE TANKS
AND CYLINDERS ..............................................................................................115

6.2

LP GAS SYSTEMS FOR CARAVANS AND CATERING VEHICLES ................115
6.2.1 Cylinder requirements ..........................................................................115
6.2.2 Cylinder Installation..............................................................................115
6.2.2.1 Required clearances around a cylinder...................................115
6.2.2.2 Restricted use of in-situ fill cylinders.......................................115
6.2.2.3 Restriction on location of a cylinder ........................................115
6.2.2.4 Minimum clearance above the ground ....................................115
6.2.2.5 Location of a cylinder ..............................................................115
6.2.2.6 Cylinders to be upright ............................................................116
6.2.2.7 Securing of cylinder.................................................................116
6.2.3 Cylinder in a compartment ...................................................................116
6.2.3.1 Restriction on cylinder size .....................................................116
6.2.3.2 Identification of cylinder compartment.....................................116
6.2.3.3 Requirements for a cylinder compartment ..............................117
6.2.4 Cylinder regulator .................................................................................117
6.2.4.1 Connection of cylinder regulator to the cylinder ......................117
6.2.4.2 Maximum outlet pressure........................................................117
6.2.5 Consumer piping ..................................................................................118
6.2.5.1 Piping not to be subject to physical damage...........................118
6.2.5.2 Restriction on joints in consumer piping..................................118
6.2.5.3 Restriction on use of a hose assembly as consumer piping ...118
6.2.5.4 Acceptable pipe and fittings ....................................................118
6.2.5.5 Main run of consumer piping to be located outside
the caravan .............................................................................118
6.2.5.6 Consumer piping design .........................................................118
6.2.5.7 Protection of piping where penetrating a partition, floor or
structural member ...................................................................118
6.2.5.8 Flexibility of consumer piping system......................................118
6.2.5.9 Hose assembly for connecting an appliance to
consumer piping......................................................................119
6.2.5.10 Pipe support – Requirements and spacing .............................119
6.2.6 Appliance installation ...........................................................................120
6.2.6.1 Prohibited appliances..............................................................120
6.2.6.2 Required clearance between appliance and fuel filler
cap or vent ..............................................................................120
6.2.6.3 Manual shut-off valve required................................................120
6.2.6.4 Appliance to be secured..........................................................120
6.2.6.5 Appliance flueing.....................................................................120
6.2.6.6 Installation of a refrigerator .....................................................120
6.2.6.7 Connection of a wall-mounted gas light ..................................121
6.2.7 Air supply to appliances .......................................................................121
6.2.8 Required consumer instruction labels ..................................................122
6.2.8.1 Warning label to be fixed near cooking appliances
and gas lights..........................................................................122
6.2.8.2 Consumer instructions to be displayed near cylinders............122
6.2.8.3 Consumer instructions to be displayed near an appliance......122
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AS 5601 – 2000
AG 601 – 2000

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6.3

114

LP GAS SYSTEMS FOR MARINE CRAFT........................................................123
6.3.1 Cylinders ..............................................................................................123
6.3.1.1 Prohibited use of in-situ fill cylinders.......................................123
6.3.1.2 Cylinder requirements .............................................................123
6.3.2 Cylinder installation ..............................................................................123
6.3.2.1 Restriction on location of a cylinder ........................................123
6.3.2.2 Required clearances around a cylinder...................................123
6.3.2.3 Location of a cylinder ..............................................................124
6.3.2.4 Cylinders to be upright ............................................................124
6.3.2.5 Securing of cylinder.................................................................124
6.3.3 Cylinder in a compartment ...................................................................124
6.3.3.1 Identification of cylinder compartment.....................................124
6.3.3.2 Requirements for a cylinder compartment ..............................124
6.3.3.3 Requirements for cylinder compartment drain ........................125
6.3.4 Cylinder regulator .................................................................................125
6.3.4.1 Connection of cylinder regulator to the piping system ............125
6.3.4.2 Maximum outlet pressure........................................................125
6.3.5 Consumer piping ..................................................................................125
6.3.5.1 Piping not to be subject to physical damage...........................125
6.3.5.2 Restriction on joints in consumer piping..................................126
6.3.5.3 Restriction on use of a hose assembly as consumer piping ...126
6.3.5.4 Acceptable materials for consumer piping ..............................126
6.3.5.5 Hose assembly for connecting an appliance to
consumer piping......................................................................126
6.3.5.6 Flexibility of consumer piping system......................................126
6.3.5.7 Pipe support – Requirements and spacing .............................127
6.3.5.8 Protection of piping where penetrating a partition,
deck, floor, structural member or bulkhead.............................128
6.3.5.9 Deck or bulkhead penetrations to be vapour-proof .................128
6.3.5.10 Pressure testing of consumer piping.......................................128
6.3.6 Appliances............................................................................................128
6.3.6.1 Prohibited appliances..............................................................128
6.3.6.2 Restriction on installation of an appliance on a
petrol-fuelled craft ...................................................................128
6.3.6.3 Restriction on installation of space heaters.............................128
6.3.6.4 Required clearance between appliance and fuel filler
cap or vent ..............................................................................129
6.3.6.5 Manual shut-off valve required................................................129
6.3.6.6 Appliance to be secured..........................................................129
6.3.6.7 Appliance flueing.....................................................................129
6.3.6.8 Installation of a refrigerator .....................................................129
6.3.6.9 Flame safeguard required for cooking appliance hotplate
burners and grill burners .........................................................129
6.3.6.10 Appliance installed on gimbals................................................129
6.3.6.11 Combustible gas detection system required ...........................130
6.3.7 Air supply to appliances .......................................................................130
6.3.8 Required consumer instruction plates and labels.................................130
6.3.8.1 Consumer instructions to be displayed near cylinders............130
6.3.8.2 Consumer instructions to be displayed near an appliance......131

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SECTION 6

AS 5601 – 2000
AG 601 – 2000

LP GAS SYSTEMS



NOTES:
1 This Section gives specific requirements for vapour withdrawal LP Gas cylinders
supplying caravans and marine craft.
2 Unless indicated otherwise, the requirements of this Section are in addition to those
given in Sections 1 to 5.
3 This Section does not include requirements for automobile or marine propulsion fuel
systems, cylinder filling installations or installations covered by other industry
Standards and Codes.



6.1 LOCATION AND INSTALLATION OF LP GAS STORAGE TANKS
AND CYLINDERS
AS/NZS 1596 is the primary document for the installation of LP Gas cylinders and
tanks.

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Appendix J provides requirements relating to the installation of
cylinders.



6.2 LP GAS SYSTEMS FOR CARAVANS AND CATERING VEHICLES
6.2.1 Cylinder requirements
A cylinder shall comply with Clause J1

6.2.2 Cylinder installation
6.2.2.1 Required clearances around a cylinder
Clearances around a cylinder shall comply with Appendix J.
NOTE: Figures J2 (b) & J3 (b) depict a building, however the clearances are relevant to
caravans.



6.2.2.2 Restricted use of in-situ fill cylinders
An in-situ fill cylinder shall comply with Clause 6.2.2.1 and be located at least 3.5 m
from a caravan .

6.2.2.3 Restriction on location of a cylinder
A cylinder shall not be installed inside a caravan other than in accordance with
Clause 6.2.3.

6.2.2.4 Minimum clearance above the ground
Where a gas installation is designed such that the cylinder is to remain connected
to the consumer piping while the caravan is moving, the minimum clearance
between a cylinder or the cylinder support and the ground shall be 200 mm.
NOTE: In the case of a caravan used for a commercial application, the cylinder is to be
installed with as much ground clearance as possible. However, the clearance is never to
be less than the minimum road clearance of the caravan under maximum spring
deflection.

6.2.2.5 Location of a cylinder
Where a gas installation is designed such that the cylinder is to remain connected
to the consumer piping while the caravan is moving, the cylinder shall be installed
using one of the following methods:
(a)

Mounted externally on the draw bar of the caravan or in a similarly secured
location on the caravan wall which would normally face the towing vehicle.
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AS 5601 – 2000
AG 601 – 2000

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(b)

In a cylinder compartment within the profile of the caravan or on the draw bar
of the caravan .

(c)

In a fully open recess within the profile of the caravan and which is vapourproof to the inside of the caravan .
NOTE: See Clause 6.2.3 for compartment requirements.

6.2.2.6 Cylinders to be upright
A cylinder shall be installed upright with the valve uppermost.
NOTE: This is to ensure the inlet to the safety valve always remains in the vapour space
clear of the liquid content of the cylinder.

6.2.2.7 Securing of cylinder

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Where a gas installation is designed such that the cylinder is to remain connected
to the consumer piping while the caravan is moving, the following shall apply:

ø

(a)

The cylinder or cylinder carrier is to be rigidly secured so that its fastenings
are capable of withstanding a steadily applied load equal to four-times the
weight of the filled cylinder; and

(b)

The cylinder mounting method is to be capable of withstanding this applied
load from any direction.

WA 6.2.3 Appendix L

6.2.3 Cylinder in a compartment
6.2.3.1 Restriction on cylinder size
Where a cylinder is to be installed in a compartment that is accessible from inside
the caravan , the total capacity of the cylinder(s) shall not exceed –
(a)

25 L for caravans used as a workplace; or

(b)

12 L for all other caravans.

6.2.3.2 Identification of cylinder compartment
A durable label, complying with Figure 6.1, shall be attached in a prominent position
adjacent to the cylinder compartment.
FIGURE 6.1 CYLINDER STORAGE LABEL

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AS 5601 – 2000
AG 601 – 2000

6.2.3.3 Requirements for a cylinder compartment
A cylinder compartment shall comply with the following as appropriate:
(a)

Be designed to –
(i)

house cylinder(s) and their associated equipment only;

(ii)

allow the cylinder(s) to be positioned in the compartment without
obstructing the drain in (g); and

(iii)

permit easy removal of the cylinder(s) and the operation of the cylinder
valve(s).
NOTE: Consideration should be given to the location of the associated
equipment when determining the compartment size to enable requirement (iii)
to be satisfied.

(b)

Be constructed of material that is water and corrosion resistant.

(c)

Be capable of securing the filled cylinder(s).

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NOTE: For requirements of securing method see Clauses 6.2.2.6 and 6.2.2.7.

(d)

Be sealed to prevent gas vapour from entering the caravan .

(e)

The access door or opening shall be openable without the use of tools.
NOTE: A key is not regarded as a tool.

(f)

(g)

(h)

Where access to the compartment is to be from inside the caravan –
(i)

The access door in (e) is to seal to prevent gas vapour from entering the
caravan; and

(ii)

where the access opening into the compartment is other than at the top,
a lower vertical return or lip of at least 100 mm is to be provided along
the full length of the opening.

Have a drain in the base which has a minimum diameter of 25 mm and
terminates at a point which faces away from the forward direction of travel of
the caravan and is directed away from and –
(i)

at least 1 m from any opening into the caravan , unless the opening is at
least 150 mm above the drain outlet; and

(ii)

at least 1.5 m from any source of ignition unless the ignition source is at
least 500 mm above the drain outlet.

Not contain any electrical equipment other than a non-sparking shut-off
device.

6.2.4 Cylinder regulator


6.2.4.1 Connection of cylinder regulator to the cylinder
A cylinder regulator shall be rigidly fixed to the caravan or other rigid mounting,
positioned with the diaphragm vertical and the vent pointing vertically downwards
and protected in accordance with Clause 4.5.2 (c). It shall be connected to the
cylinder by –
(a)

a hose assembly with a minimum length of 300 mm with an excess flow valve
fitted immediately upstream of the hose assembly; or

(b)

acceptable tubing which is formed into a loop.

6.2.4.2 Maximum outlet pressure
The cylinder regulator shall be adjusted to ensure the maximum outlet pressure
does not exceed 3 kPa with all connected appliances operating.
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AG 601 – 2000

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6.2.5 Consumer piping
6.2.5.1 Piping not to be subject to physical damage
Consumer piping shall not be located where physical damage to the pipe is likely to
occur, unless adequate protection is provided.
NOTE: This would preclude the fitting of piping to the underside of the chassis or
below the chassis unless the piping is adequately protected.

6.2.5.2 Restriction on joints in consumer piping
There shall be no joints in consumer piping –
(a)

in locations which are not readily accessible other than those permitted by
Clause 6.2.6.7;

(b)

between the branch point and manual shut-off valve; or

(c)

where the piping passes through a sleeping accommodation area or through
an engine compartment.

6.2.5.3 Restriction on use of a hose assembly as consumer piping

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The use of a hose assembly as consumer piping is restricted as follows:
(a)

The installation is to have one appliance only.

(b)

The hose assembly is to be in one continuous length from the outlet of the
cylinder regulator to the inlet of the appliance .

(c)

The hose assembly is to be supported in accordance with the requirements of
Clause 6.2.5.10.

6.2.5.4 Acceptable pipe and fittings
Pipe and fittings shall be free from defects and comply with Table 6.1.

6.2.5.5 Main run of consumer piping to be located outside the caravan
Where more than one appliance is to be installed, the main run of the consumer
piping system shall be located outside the caravan.
NOTE: See also Clause 6.2.5.1.

6.2.5.6 Consumer piping design
Where more than one appliance is to be installed, the design of the consumer
piping system shall be such that –
(a)

each appliance is connected separately to the main run; and

(b)

the branch pipe enters the interior of the caravan adjacent to each appliance .

6.2.5.7 Protection of piping where penetrating a partition, floor or
structural member
Where consumer piping penetrates a partition, floor or structural member, the pipe
shall be protected against abrasion.
NOTE: A rubber grommet, or the like, fitted to the piping, will satisfy this requirement.

6.2.5.8 Flexibility of consumer piping system
To avoid the loosening of any component within a consumer piping system, the
system shall be designed with allowances for –
(a)

thermal expansion and contraction;

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