Service And Lockout Lights; Room Thermostat Operation; Desuperheater (Optional) - Econar GeoSource Ultra GW Series Installation And Operating Instructions Manual

ensure
proper
flow
for
the system.
Set the system
to the
"OFF'
position.
The compressor
will
shut down
in
1
to 2
seconds.
Next, turn the setpoint
to its
lowest
setting. Place the
system
to run
in
cooling. The
compressor
will
start
afler
an anti-short-cycle period
of
70
to
130
seconds
from its last
shutdown.
The anti-short-cycle period
is
indicated by the red
light
on the
conftoller.
After
5 minutes
of
cooling operation, check hydronic
side
return and
supply water
temperatures.
A
water
temperatue drop
of
101F
to
15"F
is normal (variation
in
water temperature and water
flow
can
cause
slight
variations). Use
a
single pressure gauge
to
check the
fluid
pressure drop through the heat
exchangers to
ensure
proper
flow
for
the system.
Set the system and the setpoint
for
normal operation.
Instruct the owner on correct operation
of
the
entire
heat
pump
system. The
unit
is now operational.
X.
SERVICE and
LOCKOUT
LIGHTS
With
proper installation,
the
ECONAR
GeoSource
Ultra
hydronic heat
pump
requires only minor
maintenance,
such
as periodic cleaning
of
the
ground water
heat
exchanger
for
heat pumps
hstalled
in
ground-water
applications. 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
lockout
lights.
VCAUTION - During
evacuation
of
refrigerant
of
a
system
not having
wrtifreeze
protection
of
either
the
ground-side or
the
hydronic-side,
water
in
the unprotected
heat
exchanger must
be
removed or contiauously flowing
to
avoid
a potential heat
exchanger
failure
caused by
freeze rupture.
The
heat
pump controller
(and
a
room thermostat,
if
part
of
the system installation)
will
display a
system lockout.
If
lockout
occurs,
follow
the
procedure below:
1)
Determine and record which
indicator
lights on
the
Controller
are
illuminated. (Refer
to
Section
XIV
for
more information on
possible
causes
of
Lockout
Conditions.)
2)
Check
for
correct water supply
from the ground loop
or ground water
system.
3)
Check
for
correct water supply on the
hydronic
side.
4)
Reset
the
system
by
disconnecting
power at
the
circuit breaker for
one
minute
and then reapplying.
5)
If
shutdown reoccurs,
I
call your ECONAR
dealer.
Do
not
continuously
reset
the lockout condition or
serious damage
may occur.
eNote
- Improper
{luid flows
or
incorrect antifreeze
levels
are
the
cause
of almost all lockouts.
XI.
ROOM THERMOSTAT
OPERATION
Installations may include
a
wide variation of
available
electronic room thermostats,
and
most of them
requi-re
to
be
configured by
the
Installer (according to
the
Installation
Guide included with
the
thermostat)
and
checked out after being installed.
elmportant
-
At
a
minimum:
1.
Ensure the thermostat is
set
up for
the
"System Type"
it
is installed
on.
2.
Ensure the thermostat is configured
for "Manual
Heat/Cool Changeover."
3.
Change other
Installer
Settings only
if
necessary.
4.
Remember to press
"Done"
to
save the
settings
and
to
exit "Installer
Setup."
5.
Run the system through all
modes
of operation in
the
thermostat instructions to
ensure correct operation.
XIT.
DESUPERHEATER
(OPTIONAL)
A
GeoSource
Ultra
unit
equipped
with a
double-wall
vented
desuperheater can
provide
supplemental heating
of
a home's domestic hot
water
by
stripping
some energy
from the
superheated
gas leaving the
compressor
and
fansferring it
to
a
hot
water tank.
A
desuperheater pump,
manufacfured
into the unit,
circulates water
from
the
domestic
hot
water tank,
heats
it
using a double
walled
water-to-refrigerant
heat exchanger, and returns
it
to
the
tank.
€Note -
A
desuperheater
is not available
on the GW240.
The
desuperheater
only provides
supplemental heating
when the
compressor
is
already
running to
heat
or
cool
the
conditioned
space. Because
the
desuperheater
is using
some energy
from
the heat
pump
to
heat
water, the
heat
pump's capacity in
the winter
is
about
107o
less than
a
unit
without
a
desuperheater.
During extremely
cold
weather, or
if
the heat pump cannot keep
up
with
heating
the
space, the desuperheater
fuse
may be removed to get
full
heating
capacity out
of
the
unit.
9W,q.nNnqC
-
Oo not
remove the desuperheater's high
temperature cutout switch,
or
tank
temperatures could
become dangerously
high. The
desuperheater's high
temperature
cutout switch
is
located
on the return
line
from the water
heater and
is
wired
in
series
with
the
desuperheater
pump
to
disable
it
from
circulating
at
entering water
temperature above 140"F.
If
the
tank
temperatures
become uncomfortably
hot,
move
this
switch to
the
leaving
water
line, which
will
reduce
the
tank maximum temporatures
10"F
to
15oF.
13