Duct System/Blower - Econar GeoSource Invision 3 Q Series Installation And Operating Instructions Manual

Units
must be
mounted on
a
vibration-absorbing
pad
slightly
larger than the base
to
provide isolation between
the
unit
and the
floor. Water supply pumps should not
be
hard plumbed
directly
to
the
unit with
copper pipe; this
could transfer
vibration from the water pump to
the
refrigeration circuit
causing
a
resonating
sound. Hard
plumbing could
also
transfer
vibration noise
from
the
unit
through the
piping
to the
living
space.
Condensate traps are
built into
every GeoSource
lnvision3 heat
pump,
so
an
extemal trap should not
be
installed. The unit should be mounted
level,
so
that
condensate
will
properly drain.
The
condensate
line
should
be
pitched away
from the unit a
minimum
of
1/8"
per
foot.
If
the
unit produces
an
odor in the
cooling
mode,
the condensate
trap or
line
may
be
plugged, or
the
unit may not
be
leveled
properly.
Bleach may
be
poured
down the condensate drain
in
the heat
pump to
kill
any
bacterial
growth in
the condensate line.
IV.
DUCT SYSTEM/BLOWER
For
the
duct
system,
metal
ductwork
should
be used.
Flexible
connectors are
required
for
discharge and return
air duct connections on
a
metal duct system. For
acceptable
duct
sizes, see
Table
1.
Ifthe
duct system
is installed
in
an
uninsulated
space, the
metal
ductwork should
be
insulated
on the
outside to
prevent
heat
loss,
absorb
noise,
and
prevent condensation
from collecting
on the
ductwork.
e'Note:
Keep
all
doors and screws installed on
unit
while moving unit
and
installing ductwork.
This
will
help
ensure that the
unit
stays square,
allowing for
easier
removal
of doors after
the
ductwork
is attached.
If
the
unit
is connected to existing
ductworh
this
ductwork must
have the
capacity to handle
the
air
volume
required by the heat
pump.
Undersized
ductwork
will
cause
noisy operation and
poor operating efficiencies
due
to lack
of airflow.
VCAUTION
- Before driving
screws
inro
the cabiner,
check on
the
inside of
the
unit to
be sure the
screw
will
not
hit
electrical or refrigeration
lines.
The GeoSource
Invision3
heat
pumps
use
a
variable
speed
DC
blower
motor.
This
motor
has
three
speed
settings;
low,
medium, and
high,
each
with four
air output
selections.
These
settings
and
outputs
are
shown in
the
electrical diagrams
in
Figures 7 and
8.
The
blower
motor
will
try
and
maintain these outputs even
as
external static
pressure increases.
eNote:
The blower
will
not operate
properly
if
ductwork
is not attached. The
ductwork
supplies static
pressure to give
the
blower motor
a
load to work
against.
Blower motors may overheat without
a
load
if
run
for
an
extended
period of
time.
Table
1-
Duct Chart
Tables calculated
for
0.05 to
0.
10 inches of
water
friction
per
100' of duct. At
these duct design conditions, along
with
the
pressure
drop through
the
filter,
the
total design external static
pressure is 0.20
inches of
water.
5
50 4
4x4
5
4x5,4x6
100 6" 4x8,4x6
7" 4x10.5x8,6x6
200
8', -5x10,6x8, 4x14,7x7
9', 6x10, 8x8,4x16
10" 6x14,8x10,7x12
350
10" 6x20,6x16,9x10
t2
6x18, 10x10,9x12
10"
4x20,
6xl
8x9
450
12
6x20,8x14,9x12,
10x1
1
10.
16,9x 8xl2
s00
10" 6x78,8x12,7x14
I 0x1
r2"
8x1 10x12
6x20,
800
12"
8xl
9x15,10x14,12x1
14 10x18,
12x14,8x24
16
1400
t6'
10x25, I
14x18, 15x16
I600
18" 10x30,15xl
14x20
r800
20"
2000
20.
15x25,18x20
1
22{tO
22
10x45, 15x28, 18x22,
2OxZO
rreptalle Maia or ?ruak Iluct
Size
Cr.M Rs:rad
Rrctandar
Round tectaryrilar
75
150
2s0
300
400
600
1000
u,Ao
_10x20,
12x18, 14x15
8,
1
0x35,
15x20, 16x19, t2x3o,
t4x5