Installation guide
|.
OPENING
SERVICE
VALVES
Outdoor
units
are
shipped
with
a
refrigerant
charge
sealed
in
the
unit.
Opening
the
service
valves
releases
this
charge
into
the
system.
NOTE:
Open
the
Suction
service
valve
first.
If
the
Liquid
service
valve
is
opened
first,
oil
from
the
compressor
may
be
drawn
into
the
indoor
coil
TXV,
restricting
refrigerant
flow
and
affecting
operation
of
the
system.
Remove
Suction
service
valve
cap
and
insert
a
hex
wrench
into
the
valve
stem.
Hold
the
valve
body
steady
with
an
end-wrench
and
back
out
the
stem
by
turning
the
hex
wrench
counterclockwise.
Turn
the
stem
until
it
just
contacts
the
rolled
lip
of
the
valve
body.
ELECTRICAL
WIRING
After
the
refrigerant
charge
has
bled
into
the
system,
open
the
Liquid
service
valve.
NOTE:
These
are
not
back-seating
valves.
It
is
not
necessary
to
force
the
stem
tightly
against
the
rolled
lip.
The
service
valve
cap
is
a
primary
seal
for
the
valve
and
must
be
properly
tightened
to
prevent
leaks.
Make
sure
cap
is
clean
and
apply
refrigerant
oil
to
threads
and
sealing
surface
on
inside
of
cap.
Tighten
cap
finger
tight
and
then
tighten
additional
%
of
a
turn
(1
wrench
flat)
to
properly
seat
the
sealing
surfaces.
J.
GAUGE
PORTS
Check
for
leaks
at
the
schrader
ports
and
tighten
valve
cores
if
necessary.
Install
plastic
caps
finger
tight.
4&
WARNING
ELECTRICAL
SHOCK
HAZARD
Failure
to
turn
off
the
main
(remote)
electrical
dis-
connect
device
could
result
in
personal
injury
or
death.
Before
installing,
modifying
or
servicing
system,
turn
OFF
the
main
(remote)
electrical
disconnect
device.
There
may
be
more
than
one
disconnect
device.
Supply
voltage
must
be
208/230
volts
(197
volt
minimum
to
253
volts
maximum)
60
Hz
single
phase.
Outdoor
units
are
approved
for
use
with
copper
conductors
only.
Do
not
use
aluminum
wire.
Refer
to
unit
rating
plate
for
minimum
circuit
ampacity
and
circuit
protection
requirements.
Grounding
Permanently
ground
unit
in
accordance
with
the
National
Electrical
Code
and
local
codes
or
ordinances. Use
a
copper
conductor
of
the
correct
size
from
the
grounding
lug
in
control
box
to
a
grounded
connection
in
the
service
panel
or
a
properly
driven
and
electrically
grounded
ground
rod.
Wiring
Connections
Make
all
outdoor
electrical
supply
(Line
Voltage)
connections
with
raintight
conduit
and
fittings.
Most
codes
require
a
disconnect
switch
outdoors
within
sight
of
the
unit.
Consult
local
codes
for
special
requirements.
Route
electrical
supply
(Line
Voltage)
wiring
through
knockout
hole
in
bottom
of
Control
Box.
Connect
wires
to
Contactor
and
Ground
Lug
according
to
Wiring
Diagram
on
unit.
Refer
to
Figure
10.
Route
thermostat
wiring
through
rubber
grommet
in
bottom
of
Control
Box.
Low
voltage
lead
wires
are
provided
in
the
control
box
for
connection
to
thermostat
wires
(use
wire
nuts).
Refer
to
Wiring
Diagram
on
unit
and
Figure
11
for
low
voltage
wiring
examples.
NOTE:
Use
No.
18
AWG
(American
Wire
Gage)
color-coded,
insulated
(35
°C
minimum)
wire.
[ff
thermostat
is
located
more
than
100
feet
(80.5
m)
from
unit
as
measured
along
the
control
voltage
wires,
use
No.
16
AWG
color-coded
wires
to
avoid
excessive
voltage
drop.
:
Electrical
Supply
(Line
Voltage)
Figure
10
Connections
DISCONNECT
PER
NEC
AND/OR
LOCAL
CODES
TCS
CONTACTOR
“4
11
0
FIELD
POWER
©
®
WIRING
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2.--------L@®
&
23
or
13
FIELD
GROUND
Q
WIRING
GROUND
LUG
10
428
01
5103
02