Bard W38A1 Bedienungsanleitung Seite 4

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Seitenansicht 3
Ventilation
System
Packages
Bard
Wall-Mounts
are
designed
to
provide optional ventilation
packages
to
meet
all of
your
ventilation
and
indoor
air
quality requirements.
All
units
are
equipped with
a
barometric
fresh
air
damper
as the
standard
ventilation
package.
All
ventilation
packages
can be
built-in
at the
factory
or field-installed at a
later date.
Barometric
Fresh
Air
Damper
BAROMETRIC
FRESH
AIR
DAMPER
-
BFAD
STANDARD
The
barometric fresh
air
damper
is a
standard
feature
on all
models.
It
is
instated
on the
inside
of the
service
door
and
allows
outside ventilation air,
up to 25% of the
total airflow rating
of
the
unit,
to be
introduced through
the
air
inlet
openings
and to be
mixed
with
the
conditioned
air.
The
damper
opens
during
blower
operation
and
closes when
the
blower
is
off. Adjustable blade stops
allow
different amounts
of
outside
air to be
introduced
into
the
building
and can be
easily locked closed
if
required.
NK
OFF
PLATE
BOP
IQNAL
OPTI
nk
off
plate
is
installed
on the
inside
of the
service door.
It
covers
the air
inlet
openings,
which
restricts
any
outside
air
from
entering
the
unit.
The
blank
off
plate
should
be
utilized
in
applications where outside
air is not
required
to be
mixed with
the
conditioned
air.
Motorized
Fresh
Air
Damper
Commercial
Room
Ventilator
Economizer
Energy
Recovery
Ventilator
OPTIONAL
The
motorized
fresh
air
damper
is
internally
mounted behind
the
service door
and
allows
outside
ventilation
air,
up
to 25%
of
the
total
airflow
rating
of the
unit,
to be
introduced through
the
air
inlet openings
and to be
mixed
with
the
conditioned
air.
The two
position damper
can be
fully open
or
closed.
The
damper blade
is
powered
open
by a
24VAC
motor
with
spring
return
on
power loss.
The
damper
can be
controlled
by
indoor blower
operation
or can
be
field
connected
to be
managed based
on
building
occupancy.
NOTE:
The
above vent systems
ana
intake
only
without
built-in
exhaust
capability.
Building
will
likely require
separate
field
instated
barometric
relief
or
mechanical exhaust elsewhere
within
the
conditioned space. Balancing
dampers
in the
return
air
grille
may be
required
to
achieve specified amount
of
outdoor
air
intake.
COMMERCIAL
ROOM
VENTILATOR
CRV
OPTIONAL
The
built-in
commercial
room
ventilator
is
internally
mounted behind
the
service door
and
allows outside
ventilation air,
up to
50%
of the
total airflow rating
of the
unit,
to be
introduced through
the air
inlet
openings.
It
includes
a
built-in
exhaust
air
damper.
The
commercial
room
ventilator (CRV)
is a
simple
and
innovative
approach
to
improving
the
indoor
air
quality
by
providing
fresh
air
intake
and
exhaust capability through
the
CRV.
The
damper
can be
easily adjusted
to
control
the
amount
of
fresh
air
supplied
into
the
building.
The CRV can be
controlled
by
indoor blower operation
or field
controlled
based
on
room
occupancy.
Two
versions
available
(except
on
1.5
and
2-Ton models).
The CRV and
CRVS
are
power
open
-
spring return
on
power
loss,
and
CRVP
is
power open
and
power
dose.
Complies with
ANSI/ASHRAE
Standard
62.1
"Ventilation
for
Acceptable Indoor
Air
Quality*.
ECONOMIZER
EIFM
OPTIONAL
The
built-in
economizer
system
is
internally mounted behind
the
service door
and
allows outdoor
air to be
introduced
through
the air
inlet
openings.
The
amount
of
outdoor
air
varies
in
response
to the
system
controls
and
settings defined
by the end
user.
It
includes
a
built-in exhaust
air
damper.
The
economizer
is
designed
to
provide
•free
cooling* when outside
air
conditions
are
cool
and dry
enough
to
satisfy cooling requirements without running
the
compressor.
This
in
turn provides lower operating
costs,
while extending
the
life
of the
compressor.
Standard
Features:
One
Piece Construction
-
Easy
to
install
with
no
mechanical linkage
adjustment
required.
Exhaust
Air
Damper
-Built
in
with
positive
closed
position.
Provides exhaust
air
capability
to
prevent
pressurization
of
tight
buildings.
Actuator Motor
- 24
volt,
power open,
spring
return
with
built
in
torque
limiting
switch.
Proportioning
Type
Control
- tar
maximum
'free
cooling" economy
and
comfort.
Moisture
Eliminator
&
PrefiKer-
permanent, washable aluminum construction.
Enthalpy Control
-
adjustable
to
monitor outdoor temperature
and
humidity.
Minimum
Position
Potentiometer
-
adjustable
to
control minimum damper Made position
for
ventilation
purposes.
Mixed
Air
Sensor
- to
monitor
outside
and
return
air
to
automatically modulate damper
position.
WALL-MOUNT
CNCRQY
RCOOVCRV
VCNTILATOK
CtWr
^k
OPTIONAL
The
wall-mount
energy recovery ventilator
(ERVF)
Is a
highly innovative approach
to
meeting indoor
air
quality
ventilation requirements
as
established
by
ANSI/ASHRAE Standard
62.1.
The
ERVF allows
from
300 to 450
CFM
(depending upon model)
of
fresh
air and
exhaust through
the
unit while
maintaining
superior indoor
comfort
and
humidity
levels.
In
most cases
this
can be
accomplished without increasing
equipment
sizing
or
operating
costs.
Heat transfer efficiency
is up to 67%
during summer
and 75%
during
winter
conditions.
The
ERVF consists
of a
unique
"rotary
energy recovery
cassette*
that provides effective
sensible
and
latent heat
transfer
capabilities
during summer
and
winter conditions. Various control schemes
are
addressed
including
limiting
ventilation
during
building
occupancy only.
The
ERVF
Is
designed
to be
internally
mounted behind
the
service
door
in the
W~A,
W"H
or
Wl_
model wall-
mount
units.
It can be
built-in
at the
factory
or field
installed
as an
option.
ERVF-"3
and
ERVF-'5
can be
independently
adjusted
for
intake
and
exhaust
rates.
Manufactured
under
U.S.
Patent
Nos.
5,466,678;
5,301,744
\m
Nq.
S3412-811
Supersede.
S3412-411
Page
3
of
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