
PR
O
B
L
E
M
R
E
A
SO
N
F
O
R
P
R
O
B
L
E
M
SO
L
U
T
IO
N
Sm
ell
o
f s
m
ok
e i
n
T
he
sm
ell
is
cr
eo
so
te
th
at
w
ill
be
se
ep
in
g
R
efe
r to
th
e “
ov
ern
ig
ht
bu
rn
” s
ec
tio
n o
n p
ag
es
*
*
T
he
ro
om
th
e
th
ro
ug
h t
he
flu
e j
oin
ts o
r o
ut
of
th
e f
lu
e
fo
r c
orr
ec
t b
urn
in
g m
eth
od
s.
M
ak
e s
ure
w
oo
d i
s
M
orn
in
g
sp
ig
ot
on
to
an
ex
ter
na
l s
urf
ac
e, t
hu
s c
re
ati
ng
pro
pe
rly
se
as
on
ed
.
A
fte
r a
n
th
e s
m
ell
in
th
e r
oo
m
. T
his
w
ill
be
d
ue
O
ve
rn
ig
ht
bu
rn
o e
ith
er
un
se
as
on
ed
fu
el
or
in
co
rre
ct
op
era
tio
n
on
o
ve
rn
ig
ht
bu
rn
cy
cle
s.
E
xtr
em
e n
eg
ati
ve
T
his
is
w
he
n t
he
ai
r c
irc
ula
tes
d
ow
n f
ro
m
th
e
T
o p
re
ve
nt
th
is e
xtr
em
e n
eg
ati
ve
p
re
ssu
re
Pr
es
su
re
in
th
e h
ou
se
ch
im
ne
y t
ow
ard
s th
e i
nte
rio
r o
f th
e h
ou
se
.
op
en
a w
in
do
w
ap
pro
xim
ate
ly
6
m
m
to
N
eg
ati
ve
p
re
ssu
re
is
o
fte
n w
ha
t c
au
se
s s
m
ok
in
g
all
ow
co
m
bu
sti
on
ai
r in
to
th
e r
oo
m
.
pro
ble
m
s. E
ne
rg
y e
ffi
cie
nc
y p
ra
cti
ce
s a
nd
n
ew
bu
ild
in
g c
od
e r
ule
s a
re
m
ak
in
g o
ur
ho
us
es
m
ore
an
d m
ore
ai
rtig
ht.
T
his
m
ak
es
th
e h
ou
se
’s
en
erg
y
eff
ici
en
t b
ut
als
o m
ak
es
th
em
m
ore
se
ns
itiv
e t
o
n
eg
ati
ve
p
re
ssu
re
w
he
n a
ir i
s e
xh
au
ste
d f
ro
m
th
e
ho
us
e.
La
rg
e f
an
fo
rc
ed
ex
ha
us
t v
en
tila
to
rs,
lik
e
do
w
nd
ra
ft t
yp
e k
itc
he
n s
to
ve
ex
ha
us
ts c
an
ca
us
e
ex
tre
m
e n
eg
ati
ve
p
re
ssu
re
in
th
e h
ou
se
w
he
n t
he
y
are
o
pe
ra
tin
g.
B
ec
au
se
n
ew
h
ou
se
s a
re
tig
htl
y s
ea
led
th
ere
ar
e f
ew
h
ole
s to
al
lo
w
re
pla
ce
m
en
t a
ir t
o e
nte
r
an
d t
he
h
ou
se
p
re
ssu
re
b
ec
om
es
n
eg
ati
ve
. T
his
n
eg
ati
ve
pre
ssu
re
w
ork
s a
ga
in
st f
lu
e s
ys
tem
d
ra
ft.
In
se
ve
re
ca
se
s
th
e n
eg
ati
ve
p
re
ssu
re
in
th
e h
ou
se
o
ve
rc
om
es
th
e f
lu
e s
ys
tem
dra
ft a
nd
th
e a
pp
lia
nc
e b
eg
in
s to
sp
ill
sm
ok
e, e
sp
ec
ial
ly
w
he
n
a f
ire
is
sta
rte
d o
r w
he
n i
t d
ies
d
ow
n t
o c
oa
ls.
11
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on
e: 0
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w
w
.lo
ga
ire
.co
.n
z
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