Service; Airfilter - Econar GeoSurce Vara 2 Plus GV Series Lnstallation And Operating Lnstructions

additional
control wiring
is
complete.
Set
thermostat to the
"OFF'position.
All
high voltage wiring is coffect including
fuses, breakers,
and wire
sizes.
The
heat
pump is located in
a warm
area
(above
45oF).
Starting the
system
with
low
ambient
temperature conditions is more
dfficult;
do not
leave
until
the
space is
brought up to operating
temperatures.
You
may
now apply power to
the
unit. A
4 minute
35
second
delay
on
power up
is
programmed into
the heat
pump before
the compressor
will
operate. During
this
time you
can
verify airflow
with
the
following
procedure:
o
Place the
thermostat in the
"FAN
ON" position.
The blower
should start
in
low
speed. Check
airflow
at the
registers to make
sure that they
are
open
and
that air
is being distributed throughout
the
house. When
airflow
has been checked,
move
the thermostat to the
"FAN AUTO"
position.
The
blower
should
stop.
The
following
steps
will
assure
that
your
system is
heating
and
cooling
properly. After
the
initial power up
period is completed,
the
red
indicator light
on
the
internal
controller
will
shut
off.
The
heat
pump is now ready
for
operation.
o
With
the
thermostat in
the
"HEAT"
mode, turn
the
thermostat up to its highest temperature
setting.
The compressor should start, with
the
blower starting
a
few
seconds
later.
The
thermostat may
cause
its
own compressor delay
at this
time (shown
by "Wait"
on the thermostat)
but
the
compressor
will
start after
all
delays.
r
After
running
the
unit for
5
minutes, check
the
airside return
and
supply temperatures. An air
temperature rise
of
20"F to
30oF is
normal in
the
heating mode, but variations in
water
temperafure and water
flow
rate
can cause
variations outside
the
normal
range.
r
Tum
the thermostat
to
the
"OFF'
mode. The
compressor
will
shut
down
in
a
few
seconds,
with
the
blower
stopping
shortly
after.
.
Next,
set
the thermostat
to
"COOL"
and
turn
down to its
lowest
setting.
The compressor
will
start after an anti-short cycle period,
and the
blower
will
start
a
few
seconds
later.
The
anti-
short cycle period is indicated by
the red
light
(labeled ASC) on
the
controller.
r
After
the
unit
has
run in cooling for
5
minutes,
check the airside return
and
supply
temperatures.
An air temperature drop of
15oF
to 20oF is
normal in
the
cooling
mode but
airflow
and
humidity
can effect temperature drop.
.
Set the thermostat
for
normal operation.
.
Instruct
the
owner
on correct operation
of
the
thermostat
and heat
pump.
The
heat
pump is equipped
with both high
and
low
pressure
switches that shut the unit
off if
the
refrigerant
pressure exceeds 580 psi or goes
below 50
psi- Ifthe
system exceeds
580 psi,
the high-pressure switch
will trip
and
lock
the
unit
offuntil
power
has been
disconnected
at
the
circuit
bieaker
for
approximately
one
minute.
System
pressures below
50
psi in
heating
will
trip
the 1ow
pressure switch and
lock
the
unit
out
until
the
power
supply
has been
de-energized for
one
minute.
On
a
well
water
system, the freeze
protection switch (field installed
part number
7
5-1045)
will
activate
the
lockout
at 65
psi in
the
heating
mode
to protect
the water
coil
against
freeze
rupture. After
resetting
a
lockout (by disconnecting
power to
the unit)
verify
that both water
flow
and
airflow
are at the recommended levels before energizing
the
compressor.
DO NOT
reset
a
well
water system without
verifying
water
flow.
DO
NOT
reset the system more
than one
time.
9Repeated resetting
of
the
lockout
can
cause serious damage
ifthe
reason for lockout
is
not
corrected.
& -
If
lockout
occurs more than
once contact
your
ECONAR
dealer
immediatelv.
I
XI.
SERVICE
Regular service to
a
Geosource
Vara
2
plust"
heat
pump is very
limited.
The biggest factor is cleaning
the
air
filter.
Other factors could include water coil
maintenance on
an open
loop
system
(this maintenance is
discussed
in
section
VI).
Setting
up
regular
service
checkups with your ECONAR
dealer could
be considered.
A
lit
thermostat
lockout light
will
indicate
any
major
problems with
the heat
pump
system
operation.
A.
Air Filter
The GeoSource
Vara
2
Plr"'"
heat
pump includes
an
electrostatic air
filter (ECONAR
part number
70-lU7).
This
filter
can be cleaned and reused after
it
becomes
dirty.
This
filter
should
normally
be cleaned once
a
month during normal usage. During exreme
usage or
if
system
performance
has
decreased, the
filter
should
be
cleaned
more often.
A dirty filter will
increase static pressure
to the system.
This
increase
in
static
pressure
will
cause the variable
speed
blower
to increase
its
speed
in
order to maintain
airflow levels. This
increase
in
speed
will
consume more
power
than normal, reducing
the
efficiency of
the system.
In
extreme
cases, the
blower
will
not
be able
produce
the
correct amount of
airflow.
In
the
heating
mode, reduced
airflow
may
increase the cost of operation
and, in extreme
cases, cause system
lockout
due
to high refrigerant
pressures.
In
the
cooling
mode,
reduced airflow
may
reduce cooling capacity
and,
in extreme
cases,
ice
the
aircoil
over causing
system
shutdown
due to
low
refrigerant pressures.
a
t2