T = Flue terminal | M = Gas meter |
I = Mechanical air inlet | P = Electricity meter or fuse box |
Shading indicates prohibited areas for flue terminals
a | - Below eaves, balconies or other projections: | MIN. CLEARANCE (mm) |
| Appliances up to 50 MJ/h input | 300 |
| Appliances over 50 MJ/h input | 500 |
b | - From the ground or above a balcony | 300 |
c | - From a return wall or external corner | 500 |
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 |
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| for closer installation) or obstruction facing a terminal | 500 |
h | - From any other flue terminal, cowl, or combustion air intake | 500 |
j- Horizontally from an openable window, door,
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| Appliances up to 150 MJ/h input |
| 500 | ||
| Appliances over 150 MJ/h input |
| 1500 | ||
k | - From a mechanical air inlet, including a spa blower | 1500 | |||
n | - Vertically below an openable window, |
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| inlet or any other opening into a building, with the exception of | See table | |||
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| below | |||
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| CLEARANCES 'n' (mm) |
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| Space heaters |
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| All other appliances |
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| Up to 50 MJ/h |
| UP to 50 MJ/h | Over 50 MJ/h & | Over 150 MJ/h |
| input |
| input | up | input |
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| to 150 MJ/h |
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| 150 |
| 500 | 1000 | 1500 |
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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 1.4
Heat & Glo • | 7 |