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VCAUTION
-
Before
driving
screws
inro
the
cabinet,
check
on the
inside
of
the
unit
to
be sure the screw
will
not
hit
electrical or
refrigeration
lines.
IV.
CONDENSATE
DRAIN
Condensate
traps
are
built
into
every
GeoSourceYara
2
TM
Plus
vertical unit,
so
an
external trap should not
be
installed. Vertical
units must
be
level to insure proper
condensate
drainage. Horizontal
units require
an
external
condensate
trap
in
order to drain water
from
the heat
pump.
Horizontal
units must
also be
mounted
level
in
order
for
the condensate
to drain.
The
condensate
line
as
it
leaves the
U bend
ofthe
condensate
trap must
be
at
least
3" below
the base
of
the
heat
pump.
This requires
the
U
bend
to
be
6"
below
the
unit
to give
the
upward
portion of
the
U bend
a
3"
lift.
The
condensate
trap
should be
vented after
ttre
U
bend.
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
pitched
correctly.
Bleach
may
be
poured down
the condensate
drain
in
the heat
purnp to
kill
any
bacterial
growth in
the condensate
line.
Vented
condensate traps are necessary
to break
the
negative
pressure
in
the
air chamber
and
allow
the
condensate to
flow.
Construct
condensate traps
to
the
following
diagram.
V.
DUCT SYSTEM/BLOWER
For
the
duct
system,
metal
ductwork
should
be
used.
Flexible
connectors
are
required
for
discharge
and
return
Table
L
-
Duct
Chart
Tables calculated
for
0.05 to 0.10 inches
ofwater friction
per
the
total
design external static pressure
is
0.20 inches
of
water.
1
Figure
1-
Condensate
Drain
-
Horizontal
Units
Only
Air
vat
Helt
pEp
bas€
6"
Drop
-inimrrr
3"
Risc
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.
If
the
unit
is
connected
to existing
ductwork,
this
ductwork
must
have the
capacity to handle
the
air volume
required by
the heat
pump.
Undersized
ductwork
will
cause
noisy operation
due
to high air
velocity,
aod
poor
operating efficiencies.
The GeoSource
Vara
2
Plu"t"
heat
pumps
use
a
variable
speed
ECM blower
motor.
This motor
has
four
speed
settings;
low, medium-low,
medium-high,
and
high,
each
with four
air output selections.
These
settings
and
outputs
are
shown
in
Table
2.
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.
3/4'Minn
diwto
To
draiowith
1/8"
pc
foot
nin;mn
pitch
50
+
4x4
75
5"
4x5,4x6
100
4x8,4x6
150
7"
4x10,5x8,
6x6
200
:
8"
5x10,6x8,
4x14,7x7
250
9"
6x10,
8x8,4x16
10"
6x74,8xl0,7xl2
3s0
10"
6x20,
6x16, 9x10
400
12"
6x18,
10x10, 9x12
10"
4x20,7x70,6x12,8x9
450
12"
6x20,8x14,9x12,
10x11
r0"
5x20, 6x16, 9x10, 8x12
500
10"
10x10,
6x18,
8x12,7x14
600
12"
6x20,7x18, 8x16, 10x12
800
12"
8x18,
9x15,
70x74,
12x12
1000
14"
70x18,12x74,8x24
1200
16"
10x20, 12x18,
14x15
1400
16"
10x25, 12x20,
14x1
8,
15x1
6
1600
18"
10x30,15x18,
14x20
1800
20"
10x35, 15x20,
76x19,72x3O,
14x25
2000
20"
10x40, 12x30, 15x25, 18x20
At
these duct design
conditions,
along
with
the pressure
drop
through the
frlter
CIE{
Rolnd
Rectansular
Round
Rectancular
300
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