Heat & Glo • VRT-AUB • 2123-980_R14 • 12/14
22
Figure 6.3 Minimum Clearances for Termination
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
T
= Flue terminal
M
= Gas meter
Shading indicates prohibited
I
= Mechanical air inlet
P
= Electricity meter or fuse box
areas for flue terminals
f
c
n
I
openable
window
j
j
j
door
h
h
h
T
e
e
P
T
g
k
k
d
b
d
M
a
c
g
See note 2
See note 3
T
a - Below eaves, balconies or other projections:
MIN. CLEARANCE - in. (mm)
Appliances up to 50 MJ/h input
....................................................................................
12 (300)
Appliances over 50 MJ/h input
...............................................................................
20-1/2 (500)
b - From the ground or above a balcony
...............................................................................
12 (300)
c - From a return wall or external corner
.........................................................................
20-1/2 (500)
d - From a gas meter (M)
......................................................................................................
39 (1000)
e - From an electricity meter or fuse box (P)
...................................................................
20-1/2 (500)
f - From a drain or soil pipe
....................................................................................................
6 (150)
g - Horizontally from any building structure (unless appliance approved
for closer installation) or obstruction facing a terminal
...............................................
20-1/2 (500)
h - From any other flue terminal, cowl, or combustion air intake
....................................
20-1/2 (500)
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
............................................................................
20-1/2 (500)
Appliances over 150 MJ/h input
...................................................................................
60 (1500)
k - From a mechanical air inlet, including a spa blower
.......................................................
60 (1500)
n - Vertically below an openable window, non-mechanical air
inlet or any other opening into a building, with the exception of
...................................... See table
sub-floor ventilation
................................................................................................................ below
CLEARANCE
Space Heaters
All other appliances
Up to 50 MJ/h input
Up to 50 MJ/h input
Over 50 MJ/h input and
Up to 150 MJ/h input
Over 50 MJ/h input
6 in. (150 mm)
20 in. (500 mm)
39 in. (1000 mm)
59 in. (1500 mm)
