Unitlocation/Mounting - Econar GeoSurce Vara 2 Plus GV Series Lnstallation And Operating Lnstructions

only
the
FAN
to
operate, the
blower
will
put out
a
low
amount
of airflow in
cubic feet per minute (CFM).
This
low CFM
output
will
gently circulate air throughout
the
house,
eliminating
hot or
cold
spots, and actually reduce
the need for mechanical heating or
cooling
at
certain
times of
the
year.
The
blower
can supply this minimal
CFM
output with
a
very
1ow electrical
usage.
In
order
to
provide
greater comfort,
the
ftkd
stage signal
will "latch"
to the second stage call form
the thermostat.
This
will
allow
the elements to run
until
second stage
of
the
thermostat is satisfied, causing
the room temperature
to
be
closer to
the thermostat setpoint.
Also,
on units equipped with
a desuperheater,
a
third
stage call
will
de-energize
the desuperheater pump. This
allows
the
full
capacity
of
the heat
pump to
be used to
heat the
living
space.
The GeoSource
Vara
2 plrst"
horizontal units
do
not
have factory
installed internal electric
elements.
D.
R-410a Refrigerant
The GeoSource
Vara
2
Plrs'"
utilizes R-410a
refrigerant.
R-410a is
a
zero-ozone depleting refrigerant,
making
the GeoSource
Vara
2
plrst"
even
more Eart}
friendly.
**TMPORTANT**
R-410a refrigerant requires extra precaution when service
work
is being performed.
The operating
pressures are
extremely high
- approximately l50Volngher
than
R-22
-
which
can cause
harm.
Also,
never leave
the
refrigerant
system open to
atmosphere longer than absolutely
necessary, because
ofthe
hydroscopic properties ofthe
refrigerant
oil
that is used.
III.
UNIT LOCATION/
MOUNTING
Locate
the
unit in
an
indoor
area
where
the ambient
temperature
will
remain
above
45nF.
Servicing of
the
heat
pump is
done
primarily from
the
front.
Rear
access
is desirable
and should
be
provided
when
possible. A
field
installed drain pan
is
required under
the entire unit
where accidental water discharge could
damage
surrounding floors,
walls or ceilings.
VCAUTION
-
Do nor tip unirs on their
side
during
transportation or
installation, or
severe internal
damage
may occur.
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.
eNote:
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 door after
the
ductwork
is
attached.
l
When
the thermostat calls for first
stage
heating or
cooling,
the
fan
speed
will
increase
to its mediumJow
speed
setting. When
the thermostat calls for
second stage
heating or cooling, it will
bring
the fan
speed
up to
medium-high
speed.
If
third
stage
heating or Emergency
Heat is calling,
the
blower will
run at
it's high
speed
setting.
The air coil
has
a
minimum CFM
requirement to
operate
properly
based on stage
of
operation in which
the
unit
is
running. With flrst
stage heating or cooling
running,
the
medium-low
speed
setting must supply
enough
airflow. With
second
stage
running,
the medium-
high
speed setting is
required.
The fan
speeds
of
the
GeoSource
Vara
2
Plust'
heat
pumps
are
factory
set
to
provide
the
highest efficiency
at each stage
of
operation,
but may
be adjusted
slightly in
the
field
to increase
comfort.
The controller provides
a
total of
16 fan
speed
set
points.
There
are
four different CFM
outputs in
each
of
the
four
fan
speed
ranges
(Low, Medium-Low, Medium-High,
and
High).
These
CFM
outputs
are
factory
set, and should not
be changed in
the
field.
There is
an
Adjust
setting, which
allows
the
blower
to
be operated at +/-10Vo of
the
factory
setting.
For example,
if
the
Adjust
tap
is
set
to the
"-",
alt
the speeds
will
operate
at9}Vo ofthe
factory setting.
ff
the
Adjust
tap is
set
to the
"+",
all
the
speeds
will
operate
at
ll0Vo
of
the
factory setting.
The Adjust
tap
is
the
only
tap on the
Blower
Speed
Controller
that should
ever be
moved
from
the
factory setting.
The blower motor
also
provides internal
circuitry
that
will
try
to maintain
the
setpoint
CFM
when
changes occur
in
the
external static
pressure, such
as
the
filter
getting dirty
over
time.
The
motor
does this by increasing its torque output
to
compensate
for
external
resistance changes.
The blower
is
also
programmed
to
provide
soft starting to
reduce
air noise,
delays after compressor shutdown
to
distribute
all
the heat
output
from
the
compressor to
the
heated space, and ramped
speed
changes.
All
these
features
are designed
for quiet, comfortable,
efficient
operation.
C.
Intelligent Electric
Resistance
Elements
The GeoSource Vara
2 plr"t"
vertical units
are
equipped with factory
installed electric
resistance
_
elements. These
provide
an
extra
5
kW of
heat when the
-\
thermostat calls
for
3'd
stage heating.
They
also
provide
10
kW of
electric
heat
when
the thermostat is
set
to
Emergency Heat.
--)