19
060718-44
100000432-50
Flue Terminal Minimum Clearances
8
H ea t & G lo • V R T I K L - A U • 2123 - 900 R ev . E • 6/ 09
f
c
n
I
op ena b le
w ind ow
j
j
j
d oor
h
h
h
T
e
e
P
T
g
k
k
d
b
d
M
a
c
g
S ee note 2
S ee note 3
T
T = F lue termina l
M = G a s meter
S h a d ing ind ic a tes p roh ib ited
I = M ec h a nic a l a ir inlet P = E lec tric ity meter or fus e b ox
a rea s for
fl
ue termina ls
a - B elow ea v es , b a lc onies or oth er p roj ec tions :
MI N. CLEARANCE ( m m )
A p p lia nc es up to 50 M J / h inp ut ......................................................................................... 3 00
A p p lia nc es ov er 50 M J / h inp ut .......................................................................................... 500
b - F rom th e ground or a b ov e a b a lc ony .................................................................................... 3 00
c - F rom a return w a ll or ex terna l c orner .................................................................................... 500
d - F rom a ga s meter ( M ) ......................................................................................................... 1000
e - F rom a n elec tric ity meter or fus e b ox ( P ) .............................................................................. 500
f - F rom a d ra in or s oil p ip e ....................................................................................................... 150
g - H oriz onta lly from a ny b uild ing s truc ture ( unles s a p p lia nc e a p p rov ed
for c los er ins ta lla tion) or ob s truc tion fa c ing a termina l .......................................................... 500
h - F rom a ny oth er
fl
ue termina l, c ow l, or c omb us tion a ir inta k e ................................................ 500
j - H oriz onta lly from a n op ena b le w ind ow , d oor, non- mec h a nic a l a ir
inlet, or a ny oth er op ening into a b uild ing, w ith th e ex c ep tion of s ub -
fl
oor v entila tion:
A p p lia nc es up to 150 M J / h inp ut ....................................................................................... 500
A p p lia nc es ov er 150 M J / h inp ut ...................................................................................... 1500
k - F rom a mec h a nic a l a ir inlet, inc lud ing a s p a b low er .......................................................... 1500
n - V ertic a lly b elow a n op ena b le w ind ow , non- mec h a nic a l a ir
inlet or a ny oth er op ening into a b uild ing, w ith th e ex c ep tion of .................................. S ee ta b le
s ub -
fl
oor v entila tion ............................................................................................................ b elow
NOTES:
1. A ll d is ta nc es a re mea s ured v ertic a lly or h oriz onta lly a long th e w a ll to a p oint in line w ith th e nea res t
p a rt of th e termina l.
2. P roh ib ited a rea b elow elec tric ity meter or fus e b ox ex tend s to ground lev el.
3 . S ee c la us e 5.13 .6.6 for res tric tions on a
fl
ue termina l und er a roofed a rea .
4. S ee A p p end ix J , F igure J 1( a ) a nd J 2( a ) for c lea ra nc es req uired from a
fl
ue termina l to a L P G a s
c y lind er. A
fl
ue termina l is c ons id ered to b e a s ourc e of ignition.
MI NI MUM CLEARANCES REQ UI RED FOR BALANCED FLUE TERMI NALS
OR THE FLUE TERMI NALS OF OUTDOOR APPLI ANCES
C L E A R A N C E ‘ n’ ( mm)
S p a c e H ea ters
A ll oth er a p p lia nc es
U p to 50 M J / h inp ut
U p to 50 M J / h inp ut
O v er 50 M J / h & up to 150 M J / h
O v er 150 M J / h inp ut
150
500
1000
1500
Fig ure 3 . 4