L
II.
m.
Iv.
v.
VI.
TABLE OF CONTENTS
General
Information
Standard Ceiling
Plenum Control
Panel
.
Standard
Ceiling
Plenum Operation
Maintenance
Wall
Thermostat Identification
and Operation
.
.
. .
Warranty
Service
I.
GENERAL
INFORMATION
I
)
3
4
6
6
These air
conditioners
were designed
to operate
from a
'
I 15 VAC, 60H2,
1 Phase
power
supply.
Anytime an air
conditioner
is not operating
properly,
the
power
supply should
be examined
by
a
qualified
technician
to verify that
the air
conditioner
is receiving the
proper
power
supply.
The ability of the
air conditioner
to
maintain the desired
inside
temperature
depends
on the
heat
gain
ofthe
recreational
vehicle.
The size
of the
vehicle, amount
of window
area, amount
of
insulation, direct
exposure
to the
sun, outside temperature
and
the
number of
people in
the
recreational
vehicle
may increase
the heat
gain
to such
an extent
that the capacity
ofthe
air
conditioner
is exceeded.
As a
general
rule, air
entering
the air conditioner
will be
cooled
about
15 to
20 degrees, depending
on the
outside
temperature
and
humidity
conditions.
For example,
if
the
air entering
the
return air
grilles
in the air
conditioner
is 80 degrees
F., the air
leaving the discharge
grilles
in the
air conditioner
will be 60
to 65 degrees
F.
As
long as this
temperature
difference
is being
maintained
between
the
return
air and
discharge
air, the
air conditioner
is
operating
at
its capacity.
If the desired
inside temperature
(normally
80
degrees
F) cannot
be
maintained, then
the
heat
gain
of
the RV
is too
great for the capacity
of the air
conditioner.
Parking the vehicle in a shaded
area,
keeping
windows and
doors shut and avoiding the
use ofheat
producing
appliances
in the vehicle will help to
reduce the
heat
gain.
When
possible,
the addition ofinsulation
and tinted
glass
(especially
in uninsulated vans) should
be considered.
NOTE
The
optional Elect-A-Heat
heating
assembly
is intended to
take the chill out of the
indoor air
when the
air
is
a
fet
degrees
too cool
for comfort.
The heating
assembll.
is an
effective
"chill
chaser".
It is not a substitute
for a
furnace.
R410A Roof
Top Air Conditioners
High Pressure
Switch
Lockout Circuit
Air conditioners and heat
pumps
using
R410A
refi:igerau
utilize a
factory installed
High Pressure
Switch
Safel.C:rcuit.
In the event of an abnormal
condition
(failure
of
fan mct.'r.
dirty condenser coil, dirty
filters), the
high
pressure stit:h
will
prevent
the
compressor
from continuing
to run.
On.-e the
high
pressure
switch
has tripped, this
safety
circuit
*ill
-Lock
Out" the compressor
preventing it flom
trying
to restan
or run
until the
I 15
VAC
supply
power
has been
turned
off and
then
back on to
reset
the
High
Pressure Switch
Safety
Circuit.
If
repeated trips
ofthe
high
pressure
switch
lock out occur.
then
you
must have
the
unit serviced
by
a
qualified
technician.
II. CONTROL
PANEL
Ifyour
RV air conditioner
is operated
from
the control
panel
located in the
ceiling
assembly,
then there
are three
controls
on
the ceiling
assembly
that
help
you
control
the air
conditioner.
They are as
follows:
A.
The Selector
Switch
*
The selector
switch
determines
which
mode
of operation
the air conditioner
will be
in.
By rotating
the selector
switch,
the operator
can
obtain
any
system
function desired.
System
functions
vary depending
upon options
of both the
roof top unit
and
ceiling assembly.
Figure I shows
selector switch
location and
lists all available
functions
by
model.
The
"Operation"
section explains
the
operational
characteristics
of each
mode of
operation.
The Thermostat
(temperature
control)
-
In
the
cooling mode, the thermostat
regulates
the
"ON"
and "OFF"
temperature
setting
at which
the
compressor
will operate.
For
"Heat/Cool"
models, the
thermostat
also controls
the
"ON"
and "OFF"
temperature
settings of the
heater assembly
(See
Figure
1).
Louvers
-
The
louvers are located
at both ends
ofthe
ceiling assembly
shroud and
are used
in directing
the
discharge air
from the unit.
B.
C
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