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Lifebreath 200STD User Manual

Lifebreath 200STD
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B
DUCTING
from
the
WEATHERHOODS
Six
inch
(15cm)
diameter
insulated
ductwithan
integral
single
piece
vapour
barrier
should
be
used.
Duct
must
meet
ULC
Class
1
fire
rating.
A
minimum
RSI
value
of
insulation
should
be
equal
to
0.75
(R4),
or
that
of
the
local
building
codes.
The
inner
and
outer
liners
of
the
flexible
insu¬
lated
duct
must
be
clamped
to
the
sleeve
of
the
weatherhood
(as
close
to
the
outside
as
possible)
and
the
appropriate
port
on
the
HRV.
To
keep
the
insulation
and
outer
liner
in
place,
a
clamp
and
duct
tape
must
be
used.
It
is
very
important
thatthe
fresh
air
intake
line
be
given
special
attention
to
make
sure
it
is
well
sealed.
A
good
bead
of
high
quality
caulking
(preferably
acousti¬
cal
sealant)
will
seal
the
inner
flexible
duetto
both
the
HRV
port
and
the
weatherhood
prior
to
clamping.
To
minimize
airflow
restriction,
the
flexible
insu¬
lated
duct
that
connects
the
two
outside
weatherhoods
to
the
HRV
should
be
stretched
tightly
and
be
as
short
as
possible.
See
Figure
#2
forthe
recommended
connection
of
flexible
insulated
ducts
to
both
the
outside
weatherhoods
and
the
HRV.
Ducting
from
the
HRVto
the
different
areas
in
the
dwelling
is
recommended
to
be
galvanized
metal
when¬
ever
possible,
though
flexible
duct
can
be
used
in
moderation
if
so
desired.
WARMSIDE
DUCTING
-
General
WEATHERHOOD
INSTALLATION
Figure
2
Weatherhood
Installation
To
avoid
possible
noise
transfer
through
the
ductwork
system,
a
short
length
approximately
12
in.
(30
cm)
of
non-metallic
(i.e.
NUFLEX
f
lexible
insulated)
duct
may
be
connected
between
the
HRV
and
the
supply/exhaust
ductwork
system.
The
use
of
TECHGRILLES
(from
NUTECH)
as
supply
air
diffusers
and
air
exhaust
covers
are
recommended.
They
are
efficient,
sound
absorbing
devices
specifically
designed
for
this
installation.
If
a
"regular
style"
steel
grille
is
used,
the
pre¬
ferred
wall
grille
size
is
5
X12
in.
(13
X
30
cm)
and
floor
grille
size
is
4
X
10
in.
(10.2
X
25
cm).
Smaller
grille
sizes
may
restrict
air
flow.
Main
supply
and
return
lines
to/from
Heat
Re¬
covery
Ventilator
must
be
6
in.
(15
cm)
minimum.
Branch
lines
to
the
individual
rooms
may
be
as
small
as
4
in.
(10.2
cm),
but
5
in.
(13
cm)
lines
are
preferred
whenever
possible.
To
minimize
airflow
losses
in
the
ductwork
sys¬
tem,
all
ducts
should
be
as
short
as
possible
and
with
as
few
bends
or
elbows
as
possible.
45°
elbows
are
preferred
to
90°
elbows,
whenever
possible.
Use
Y
tees
instead
of
90°
tees
whenever
possible.
All
duct
joints
must
be
fastened
with
screws,
rivets
or
duct
sealant
and
wrapped
with
a
quality
duct
tape
to
prevent
leakage.
We
recommend
aluminum
foil
tape.
FRESH
AIR
SUPPLY
SYSTEM
The
fresh
air
from
the
HRV
may
be
directed
at
a
grille
installed
in
the
cold
air
return
duct
of
the
furnace.
The
fresh
air
supply
outlet
from
the
unit
should
be
no
closer
than
4
in.
(10.2
cm)
and
nofurtherthan
12
in.
(30
cm)
from
the
grille.
NOTE:
The
grille
in
the
cold
air
return
duct
must
be
at
least
6
1/2
ft.
(2
m)
from
the
furnace,
if
fossil
fueled,
or
as
specified
by
local
regulatory
codes.
The
use
of
balancing
dampers
and/or
adjustable
grilles
to
balance
the
flow
rates
into
various
rooms
is
recommended.
The
TECHGRILLE
,
available
in
4",
5",
6"
(100,125
and
150
mm)
is
highly
recommended.
5

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Lifebreath 200STD Specifications

General IconGeneral
BrandLifebreath
Model200STD
CategoryFan
LanguageEnglish

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