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clogged or
kinked,
and the
unit
is
not
draining
water,
the
sensor
will
shut the heat
pump
offfor
an
anti-short-cycle
period
of
approximately
3
minutes and
35
seconds.
After
this time,
the heat
pump
will
start
again
if
the condensate
has
drained.
If
the water is
still
present, the
unit
will
go
through anti-short-cycles
until
the condensate
has
drained.
This protection switch
keeps the condensate
from
overflowing
the
drain pan
and
possibly leaking onto
the
floor
or
ceiling.
IX.
STARTUP
Before applying power to
the heat
pump, check
the
following
items:
-
Water supply
plumbing
to
the heat
pump is
completed
and
operating. Manually
open
the
water
valves on
well
systems
to
check
flow.
Make
sure
all
valves
are open and
air
has
been
purged
from
a
closed
loop
system. Never
operate the system
without
correct water
flow.
-
All
construction dust
has
been cleaned
up
and
all
sheet-rocking is
completed.
Construction
dust,
especially sheet-rock dust,
can
plug
the
air
coil
and
block
airflow.
Make
sure the
filter
is
clean
before
starting
the
unit.
-
Low
voltage
wiring of
the
thermostat
and any
additional
control wiring
is
complete.
Set
thermostat
to
the
"OFF"
position.
-
All
high voltage
wiring
is
correct
including
fuses,
breakers, and
wire
sizes.
-
The
heat
pump
is
located
in
a
warm
area (above
45"F).
Starting the
system
with
1ow
ambient
temperature conditions is more
difficult;
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:
-
Place the
thermostat
in
the
"FAN ON" position.
The
blower
should
start
immediately.
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
Anti-Short-Cycle indicator
light
on the
confoller
will
shut
off.
The
heat
pump
is
now ready
for
operation.
-
Turn
the
thermostat
up
to its highest temperature
setting.
Place the
thermostat
to
the
"HEAT"
position.
The
blower
will
start
immediately.
The compressor
should start
I
to 2
seconds
later.
The thermostat may
cause
its
own compressor delay
at
this time but
the
compressor
will
start
after
all
delays.
-
After
running
the
unit for
5
minutes, check
the
airside
return
and
supply temperatures.
An
air temperature
rise
of
25"F to
35oF
is normal
in
the
heating
mode,
but variations
in
water temperature
and water
flow
rate can cause
variations outside
the
normal
range.
Turn
the
thermostat to
the
"OFF"
position.
The
blower
will
shut
down
immediately,
and the
compressor
will
shut
down
a
few
seconds
later.
Next,
turn
the
thermostat down to
its
lowest setting.
Place the
thermostat
in
the
"COOL"
position.
The
blower
will
start
immediately.
The compressor
will
start
after
an
anti-short cycle
period.
The anti-short-
cycle period is indicated by
the red
light
(labeled
ASC)
on the
controller.
After
the
unit
has
run
in cooling for
5
minutes, check
the
airside return
and
supply temperatures.
An
air
temperature drop
of
l5nF to 20"F
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
unit
is
now
operational.
The
heat
pump is equipped
with
both
high
and
low
pressure
switches that
shut
the unit
off
if
the
refrigerant
pressure exceeds
400 psi or
goes
below
25
psi. If
the
system exceeds
400 psi,
the
high-pressure switch
will trip
and
lock
the
unit
off
until
power
has
been
disconnected
at
the
circuit
breaker
for
approximately
one
minute.
System
pressures
below
25
psi
in
the
heating mode
will trip
the
low
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 75-1028)
will
activate
the
lockout
at 35
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
without
verifying
water
flow.
DO
NOT
reset the system
more
than once.
9Repeated resetting
of
the
lockout
can cause serious
damage
if
the reason
for
the
lockouts is not corrected.
I
-
Iflockout
occurs more than
once
contact
vour
ECONAR
dealer
immediatelv.
8
X.
SERVICE
Regular service to
a
GeoSource 2000
heat
pump is very
limited.
The biggest factor is changing
the
air
filter.
Other factors could
include
water
coil
maintenance on
an
open
loop
system
(this maintenance is
discussed
in
section
IV).
Setting
up
regular
service
checkups
with
your
ECONAR
dealer
could
be
considered.
Any major
problems
with
the heat
pump
system
operation
will
be
indicated
on the
thermostat
lockout light.
ll
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