Space heaters

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 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
	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, 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			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, non-mechanical air
	inlet or any other opening into a building, with the exception of			See table
	sub-floor ventilation			below

		CLEARANCES 'n' (mm)

	Space heaters		All other appliances

	Up to 50 MJ/h	UP to 50 MJ/h	Over 50 MJ/h &	Over 150 MJ/h
	input	input	up	input
			to 150 MJ/h

	150	500	1000	1500

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

Heat & Glo • SL-550TRSI-AUE • 2079-902 Rev. B • 7/06

MIN. CLEARANCE (mm)