7
NOTES: 1. All distances are measured vertically or horizontally along the wall to a point
in line with 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 roofed area.
4. See Appendix J, Figure J1(a) and J2(a) for clearances required from a flue
terminal to a LP Gas cylinder. A flue terminal is considered to be a source of ignition.
MINIMUM CLEARANCES REQUIRED FOR BALANCED FLUE TERMINALS
OR THE FLUE TERMINALS OF OUTDOOR APPLIANCES
Figure 4
T = Flue terminal M = Gas meter Shading indicates prohibited
I = Mechanical air inlet P = Electricity meter areas for flue terminals
or fuse box
a - Below eaves, balconies or other projections: MIN. CLEARANCE(mm)
Appliances up to 50 MJ/h input........................................................................................... 3 00
Appliances over 50 MJ/h input ............................................................................................500
b - From the ground or above a balcony...................................................................................... 300
c - From a return wall or external corner .....................................................................................50 0
d - From a gas meter (M) ...........................................................................................................1000
e - From an electricity meter or fuse box (P) ...............................................................................500
f - From a drain or soil pipe.........................................................................................................150
g - Horizontally from any building structure (unless appliance approved
for closer installation) or obstruction facing a terminal......................................................... 50 0
h - From any other flue terminal, cowl, or combustion air intake............................................... 5 00
j - Horizontally from an openable window, door, non-mechanical air
inlet, or any other opening into a building, with the exception of
sub-floor ventilation:
Appliances up to 150 MJ/h input......................................................................................... 5 00
Appliances over 150 MJ/h input ........................................................................................ 1500
k - From a mechanical air inlet, including a spa blower .........................................................1500
n - Vertically below an openable window, non-mechanical air
inlet or any other opening into a building, with the exception of
sub-floor ventilation.............................................................................................See table below
k
j
jj
h
t
e
h
h
t
g
DOOR
OPENABLE
WINDOW
k
SEENOTE 2
d
b
d
a
c
g
SEENOTE 3
t
e
n
c
f
IPM

CLEARANCES

Space Heaters All other Appliances
Up to 50 MJ/h
Input
150
Up to 50 MJ/h
Input
500
Over 50 MJ/h and
up to 150 MJ/h Input
1000
Over 1 50 MJ/h
Input
1500