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f
T = Flue terminal
I = Mechanical air inlet
Ref.
a
・ Appliances up to 50MJ/h input
・ Appliances over 50MJ/h input
b
From the ground, above a balcony or other surface*
c
From a return wall or external corner*
d
e
From an electricity meter or fuse box (P)
f
From a drain or soil pipe
g
h
Horizontally from an openable window, door, non-mechanical air inlet, or any other opening
・ Appliances up to 150 MJ/h input
j
・ Appliances over 150 MJ/h input up to 200 MJ/h input
・ Appliances over 200 MJ/h input
・
From a mechanical air inlet, including a spa blower
・ Space heaters up to 50 MJ/h input
n
・ Other appliances up to 50 MJ/h input
・ Appliances over 50 MJ/h input up to 150 MJ/h input
・ Appliances over 150 MJ/h input
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.
Exemption from prescribed statutory requirements referred to in Figure 1 has been granted to
allow multiple series of the Water Heaters to be positioned side by side.
j
j
Openable
window
Door
n
I
c
M = Gas meter
P = Electricity meter or fuse box
Item
T
j
h
e
e
h
P
h
T
g
See note 2
Shading indicates prohibited
9
a
c
See note 3
d
g
M
d
b
Minimum clearances
(mm)
Natural
assisted
300
500
300
500
1000
500
150
500
500
500
1500
1500
1500
150
500
1000
1500
T
Fan
200
300
300
300
1000
500
75
500
300
300
500
1500
1500
1000
150
500
1000
1500
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