Thermostat; Controller - Econar GeoSource Invision 3 Q Series Installation And Operating Instructions Manual

systems
consisting
of
a
few relays
or
a
zone
valve
it"p""ai"g,
of
course,
on
the
VA
draw
of the
"o*por"ritl.
On more complicated
control systems
the
,.*rf**ot
capacity is used
up very
quickly'
eNote:
For units operating on
208V
electrical service'
tfr"
t
*tto."r"r
mustte
switched to the
correct lead
(see
;i;#"J
diagram -
Figures 7
and
8)'
Units
are
factory
rfrlrp"a
with-the transformer
set
for 240V
service'
o*iuti"e
a
unit on
208V with the
transformer
set
to
,i0v *il
cause the
unit
to operate
with lower than
normal
control
voltage.
the
O terminal,
which
operates the
4-way reversing
valve'
ii"
wi,"""inal
energizes
third
stage
heating
if present'
The
L terminal in connected
to
L
on the
thermostat'
An
"JJirmrr
three-wire
cable is
required to connect
the
supplied outdoor temperature
sensor
to
the RS
terminals
on the
thermostat
2.
Lights
io
indlcate when
the heat
pump is
in third stage
heating
fe.g. optionat electric
resistance
heat)'
install
a
jumper
U"i*""n W3 and
X1 on the
supplied
thermostat'
When
it
"
""i,
is running
in third stage, the
left
light on the
bottom
of the
thermostat
will
be
lit'
The
L terminal
on the heat
pump, wired to the
L terminal
or
afr"
rfr".*ostat,
will light
the
right
"lockouf'light;
lrrai"atittg the
controller
is
in lockout
mode'
If
one
;iG"#
circuit
is locked out, the
thermostat
light
will
Liiot'.
rf mrf, circuits
are
locked out, the ttrermostat
light
will
be
lit
solid.
Table 3
-
U
B. Thermostat
A
3-heat42-cool
thermostat,
ECONAR
part number
7O-2Olg,is required
for proper operation
of GeoSource
Invision3 heat
pumps.
This thermostat controls
frst
and
second stage
operation
of
the
forced air
portion of the heat
pump. Initiation of each stage
is implemented
based
on
the
ricovery rate
of
the actual temperature to
the set
point
temperature.
This
means
that
switching to
a
higher
stage
wilfrequire
time (sometimes 15
minutes or more)
for
the
thermostat to calculate
rate
of change. Consult the
instructions
in
the
thermostat
box for
proper mounting
and
operation.
Be careful to
select a
thermostat
location
where external temperature sources
will
not affect
sensed
temperature.
V
C,q.UffON-
miswiring of control voltage on system
controls
can
result
in
fuse
or transformer burnout.
eNote:
If
a
single thermostat controls
multiple
heat
pumps,
the
control wiring of
the heat
pumps must
be
isolated
from
each
other. This
will
prevent
the heat
pumps
from receiving
high voltage through
the
common
wiring
if it
is tumed
off
at the
circuit breaker
for
service.
L.
Wiring
Eight-wire
thermostat cable
must be
run
from
the heat
purnp to
the
thermostat. Power is supplied to the
thermostat by connecting the
R
and
X
(C) terminals to the
heat
pump terminal
strip.
The G terminal
from the
thermostat initiates
the
blower's sequences. The
Y1
terminal energizes the
frst
stage
operation and the
Y2
terminal
energizes
the second stage
operation. The
unit
is
put
into
the
cooling mode when the
thermostat
energizes
C.
Controller
The
controller
receives a
signal
from the
thermostat
and
initiates the
correct sequence
of
operations
for the heat
pump. The
controller
performs the
following functions:
-
ll
Blower Operation
and Speed
Control
2)
Earth LooP PumP
Initiation
3i
Compressor Operation
for
1't Stage
Heat/Cool
4)
Temperature SamPling
for
DHW
5)
ComPressor
OPeration
for
DHW
6i
Compressor Operation
for 2'd Stage
Heat/Cool
7)
4-Way
Valve Control
8)
ComPressorLockouts
9)
Compressor
Anti-Short-CYcle
l0)
System
Diagnostics
11) Overflow Detection
1.
Blower Operation and
Speed
Control
A
signal on the G
terminal from
the
thermostat to the
controller
will tell
the
conffoller to energize the
blower.
The
controller then energizes
its
M7
output
to
send
control voltage
directly to the
blower motor.
An M7
output puts
the
motor in
low
speed
operation.
If
the
thermostat sends a
G
and
Yl
signal to the
controller
for
1't stage
operation, the
controller bumps the
blower
speed
up to
Medium by energizing its
M8
output. When the
thermostat
sends a
G,
Yl
and
Y2 signal to
the
controller
for
2nd
stage
operation, the
controller bumps the
blower
speed
to High by energizing the
M9
output.
These system
con{igurations are
tabled on the electrical diagrams
(Figures 7
and 8).
To change
blower
speeds,
move
the
pin
jumper from
its
existing location to
the
new location with needle nose
pliers. You
must keep
the
jumper within its original
grouping
(High, Med.,
or
Low). Not all airflow
levels
will
work for all units, although
moving
one
airflow level
up or down should not
cause
problems.
Changing the
speed
too far
from
the
factory setting can cause
problems
2x7=I4
2
2*7=1.4
2
1*1 7=)
6
2
0
0
2*4=8
2 2*4=8
2
1
1 2
1
1
1
1
I
1
2
I z
1
6
6
1
35.6
33
39.4
42
11
*5$ed
*Hffil
Contactor
4-Way
Valve
Controller
Thermostat
Blower
Motor
Elec.
Heat RelaY
(oPt.)
Total
Available