This
section
provides
information
on
new
installation
or
replacement
of
existing
line sel. If a
new
or
replacement
line
set
is
not
required,
then
proceed
to
Brazing
Connections
on
page
14.
Table
2.
Refrigerant Line Set (MM)
Valve Field
Size
Recommendad
Line
Set
Connections
Model
Liquid Sudlon
Liquid
L15
Line
Suction
Line
Une
LlneSeb
.(118
U'"
L15~1
3/8
In.
3/4111.
3/4
In.
3/Bin
.(124
151t
-50ft
(10mm) (19mm) (10mm)
(19mm)
(4.6m
-15
m)
.030
.038
L.1S·65
318
In.
318111.
7/8
in
7/8in
.{I42
151t.-501\.
(10mm)
(22mm)
(10mm) (22mm)
.{I48
(4.6m-15m)
3/8
In.
3/8
in.
1·1/8
In.
1-1/8
in.
field
.(160
(29mm)
(10mm)
(10mm) (29mm)
Fabl'lcllted
NOTE
-
Some
applicalions
may
required
a
nald
provided
7/8"
to
1-1/6"
adapter
NOTE"
When
installing refrlgenmt lines longer than
50
feet,
see
the
Lennox Refrigerant Piping Design and
Fabrication Guidelines,
CORP.
9351-L9, or contact
Lenno~
Technical Support Product Applications for
assistance.
If
refrigerant
lines
are
routed
through
a
wall.
seal
and
isolate
the
opening
so
vibration
is
not
transmilted
to
the
building.
Pay
close
altention
to
line set isolation
during
installation
of
any
HVAC
system.
When
properly
isolated
from
building struclures (walls, ceilings.
floors),
the
refrigerant
lines
will
not
create
unnecessary
vibration
and
subsequent
sounds.
Also.
consider
the
following
when
placing
and
Installing
a
high-efficiency
air
conditioneL
Field
refrigerant
piping
consists
of
liquid
and
suction
lines
from
the
outdoor
unit
(braze
connections)
to
the
indoor
unit
COil
(nare
or
braze
connections),
Use
Lennox
L
15
(braze.
non-flare)
series
line
set,
or
use
field-fabricated
refrigerant
lines
as
listed
in
Table
2.
The
compressor
is
charged
with
sufficient
Polyol
ester
011
for
line
set
lengths
up
to
50
feet.
Recommend
adding
Oil
to
system
based
on
the
amount of refrigerant
charge
in
the
system.
No
need
to
add
oil
in
system
with
20
pounds
of
refrigeranf
or
less.
For
systems
over 20 pounds·
add
one
ounce
of
every
five
pounds of refrigerant.
Recommended
topping-off
POE
oils
are
Mobil
EAL
ARCTIC
22
CC
or ICI
EMKARATE""
RL32CF,
To
obtain
the
correct Information
from
Lennox,
be
sure
to
communicate
the
following
points:
•
Model
(13ACX)
and
size of unit
(e.g.
-OSO),
•
Line
set
diameters
for
the
unit
being
installed
as
listed
;h
table
2
and
total
length
of
installation.
•
Number
of
elbows
and
if
there
is
a
rise
or
drop
of
the
piping.
MATCHING
WITH
NEW
OR
EXISTING
INDOOR
COIL
AND
LINE
SET
The
RFC1-metering
line
consisted
of
a
small
bore
copper
line
that
ran
from
condenser
to
evaporator
coil.
Refrigerant
was
metered
into
the
evaporator
by
ulilizing
temperature/pressure
evaporation
effects
on
refrigerant
In
the
small
RFC
line.
The
length
and
bore
of
the
RFC
line
corresponded
to
the
size
of
cooling
unit.
If
the
13ACX
is
being
used
with
either
a
new
or
existing
indoor
coil
Which
is
equipped
with
a
liquid
line
which
served
as
a
metering
device
(RFCI),
the
liquid
line
must
be
replaced
prior
to
the
installation
of
the
13ACX
unit.
Typically
a
liquid
line
used
to
meter
flow
is
1/4"
in
diameter
and
copper.
LIQUID
LINE FilTER
DRIER
INSTALLATION
The
filter
drier
(one
is
shipped
with
each
13ACX
unit)
must
be
field
installed
In
the
liquid
line
between
the
oUldoor
unit's
liquid
line
service
valve
and
the
Indoor coil's
metering
device
(fixed
orifice
or
TXV)
as
illustrated
in
figure
5.
This
filter drier must
be
installed
to
ensure
a
clean,
moisture-free
system.
Failure
to
install
the
filter drier
will
void
the
warranty.
A replacement filter drier
Is
available
from
Lennox.
See
Brazing Conn6cfions
on
page
7
for
special
procedures
on
brazing filter drier
connections
to
the
liqUid
line.
BRAZE
CONNECTION
POINTS
"'".~
~!
SERVICE
VALVE
LUE
LIQUID
LINE
fiLTER
DillER
OutDOOR
UNIT
Figure
5.
Typical
Liquid
LIne Filter Drier
InstallatIon
A IMPORTANT
If
tI'II~;
Ul1itlS
beinq
m;'JlcIH"!d
with
Eln
approv~(llirw
set
or
1I1(loor
lmit
C(,i1
which
was
previuw.;ly
chmqed
with
rnlll(Hal oil,
or
if
il
I~;
bcinq
lllatclH~rl
wilh
a
coil
whietl
Weii;
IlIwluf<lctured
I)Hf
...
)/~
.J<Hlumy
<)f
199:-1, tile
Gail
.:ml"1
i1r'1<::
sclll1u~·t
be
tllJf;lH'!d prior
10
IIlstall8linn.
Take
care
10
erlqlly
all c:xislillq trapi;. P(llyol
ester
(POE) oils
me
used
in LerllllJX
L1llits
Cll;:Jfg~d
With
HrC·410A
(efri!Jcr':lnl.
~e~;il"JIJ:·11
rnilleral
Oil
can
:.ld
8S
an
ill~.;I.i1Clt(or.
prewmliliU
proper
1'le8t
t"'lm;fp,r. It
c<ln
also
clog
lIh.l
exp<lllsion
(Jp.vil";r::,
'.Hld
reduce
the
:,;y~;lern
perlorrn;Hl';C
ulld
capaCity.
Fallure to propvrl)/ f1usl) tilt'!
system
per tI,e
instruction:;
h8!<.lW will VOid
Hle
warranty.
Page
11
1SACX
SERIES
6l
'd
V1~8S:8
OlOl
'8l'
da
S
""''1.-..,
To Next Page
Loading...
