Installation guide
I
Installation
Instructions
Split
System
Condensers
NOTE:
Each
time
that
charge
is
added
or
removed
from
the
system,
allow
the
system
to
run
approximately
15
min-
utes
before
pressure
and
temperature
readings
are
taken
and
superheat
calculations
made.
NOTE:
Indoor
Wet
Bulb
Temperature
(
and
Relative
Hu-
midity)
will
alter
superheat
values.
All
readings
should
be
at
50%
humidity
inside
and
350
to
450
CFM
per
ton
across
the
indoor
coil.
Heating
Checkout
(Heat
Pump
Only)
1.
Turn
thermostat
heat-cool
switch
to
OFF.
Turn
ther-
mostat
fan
switch
to
AUTO.
2.
Turnonall
power
except
230
volt
line
to
outdoor
sec-
tion.
8.
Turn
fan
switch
on
thermostat
to
ON.
Blower
should
run.
Reset
to
AUTO;
blower
should
turn
off.
4.
Setthermostat
below
room
temperature.
Turn
selec-
tor
switch
to
heat.
Move
thermostat
above
room
tem-
perature.
Blower
should
run
on
heating
speed
anda
click
should
be
heard
in
the
condensing
unit
outside
(contactor
closing).
The
sequencer
coils
for
auxiliary
heat
should
be
energized.
After
approximately
30
seconds
the
contacts
in
the
sequencers
should
close
and
the
electric
heat
elements
start
heating.
Allow
3
minutes
for
all
heaters
to
come
on.
5.
Set
system
switch
to
OFF>
Turn
the
thermostat
above
room
temperature.
Turn
on
the
230
volt
power
to
the
outdoor
unit.
Nothing
apparent
will
be
happen-
ing,
but
the
crankcase
heater
is
now
energized.
Ifthe
outdoor
temperature
is
below
75
°F
allow
the
unit
to
stay
in
this
mode
at
least
6
hours.
This
is
needed
to
vaporize
any
refrigerant
that
may
be
in
the
compres-
sor
oil,
6.
Set
the
thermostat
above
room
temperature.
Move
system
switch
to
heat.
Count
to
5
(about
5
seconds).
Turn
the
electric
power
off
at
the
condensing
unit dis-
connect
switch.
Check
that
there
is
no
clattering
or
unusual
noises.
The
outdoor
fan
blade
should
have
started turning
and
a
humming
noise
should
have
been
heard
from
the
compressor.
The
indoor
fan
should
continue
to
run
at
its
normal
speed
and
elec-
tric
elements
continue
to
heat.
7.
Wait
2
minutes,
then
repeat
the
procedure
and
re-
check
the
same
things
in
case
you
missed
something
during
the
first
power
application.
8.
With
the
unit
operating,
close
all
doors,
windows,
storm
windows,
and
openings
to
the
house.
Set
the
thermostat
to
the
desired
setting.
Set
outdoor
ther-
mostat
(if
installed)
to
balance
point
of
house.
If
tem-
perature
of
house
is
at
least
two
degrees
below
thermostat
setting,
heat
pump
and
auxiliary
heat
not
controlled
by
outdoor
thermostats
will
continue
to
run
until
room
temperature
is
approximately
2°
below
thermostat
set
point.
Auxiliary heat
light
should
go
out
and
auxiliary
heat
cycle
off.
Heat
pump
should
continue
to
run
until
thermostat
reaches
set
point.
To
Check
System
Refrigerant
Charge
(Heating
Mode)
The
recommended
method
of
addition
or
removal
of
charge
in
the
heating
mode
is
by
weight.
The
system
op-
eration
may
be
checked
against
the
performance
charts.
Remember,
indoor
airflow
must
be
approximately
400
CFM
per
ton
to
compare
operation
to
performance
charts.
Defrost
System
(Heat
Pump
Only)
The
defrost
system
is
electronic
with
an
adjustable
time
in-
terval
of
90,
60,
or
30
minutes.
It
is
factory
set
at
60
or
90
minutes.
At
the
selected
time
interval
with
the
outdoor
coil
temperature
at
approximately
28
°F,
the
system
will
de-
frost.
When
the
sensor
sees
a
rise
in
the
outdoor
coil
tem-
perature
to
approximately
10
minutes,
the
defrost
will
be
terminated.
In
some
areas,
with
high
humidity,
the
time
interval
may
re-
quire
adjustment
for
complete
removal
of
ice
from
the
coil.
For
best
economy,
always
set
to
the
longest
interval
that
will
keep
the
coil
clear
of
ice.
NOTE:
The
term
ice
means
hard
but
not
frost.
During
nor-
mal
operation,
the
coils
may
become
coated
with
frost
until
they
are
solid
white.
The
time
interval
for
the
defrost
should
be
set
so
the
frost
and
ice
melt
off
completely
without
hard
ice
building
up on
the
coil.
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