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.
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