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SAFETY
CONSIDERATIONS
Installation
and servicing
of this equipment
can be hazardous
due to
mechanical
and electrical
components.
Only trained
and qualified
personnel
should
install, repair, or service this equipment.
Untrained
personnel
can perform
basic maintenance
functions
such
as cleaning
and replacing
air filters. All other operations
must be
performed
by trained
service
personnel.
When working
on this
equipment,
observe precautions
in the literature,
on tags, and on la-
bels attached
to or shipped with the unit and other safety precautions
that may apply.
Follow all safety codes. Installation
nmst be in compliance
with lo-
cal and national
building
codes.
Wear safety glasses,
protective
clothing,
and work gloves.
Have fire extinguisher
available.
Read
these instructions
thoroughly
and follow
all warnings
or cautions
included
in literature
and
attached
to the unit.
Recognize
safety information.
This is the safety-alert
symbol
_.
When you see this symbol on the unit and in instructions
or manuals,
be alert to the potential
for personal
injury. Understand
these signal
words; DANGER.
WARNING,
and CAUTION.
These words are
used with the safety-alert
symbol.
DANGER
identifies the most se-
rious hazards
which
will result in severe personal
injury or death.
WARNING
signifies hazards
which could
result in personal injury
or death. CAUTION
is used to identify unsafe practices
which may
result in minor
personal
injury or product
and property
damage.
NOTE
is used to highlight
suggestions
which
will result
in en-
hanced installation,
reliability,
or operation.
Note: Installer:
This manual
should be left with the equipment
user.
FOR
YOUR
SAFETY
Failure to follow
this caution
may result in personal
injury.
Do not store or use gasoline
or other flammable
vapors
and
liquids
in the vicinity
of this or any other appliance.
FIRE, EXPLOSION,
ELECTRICAL
SHOCK
HAZARD
Failure to follow this warning
could result in personal injury,
death or property
damage.
Do
not
use
this
unit
if any
part
has
been
underwater.
Immediately
call a qualified
service technician
to inspect the
unit and to replace
any part of the control system
which
has
been underwater.
For your safety if you smell gas:
1. Do not try to light any appliance.
2. Do not touch any electrical
switch; do not use any phone
in your building.
3. Immediately
call your gas supplier
from a nearby phone.
Follow the gas supplier's
instructions.
4. If you
cannot
reach
your
gas
supplier,
call
the fire
department.
UNIT INTRODUCTION
This 48XT unit is a small packaged
Hybrid
Heat"'
system that can
utilize both the efficiency
of heat pump heating
and the comfort
of
gas heating.
The system will optimize
for ideal heating,
depending
®
on several factors. This unit uses Puron
, the ozone friendly refrig-
erant, for cooling
and heat pump heating.
You
may
notice
your
two-stage
packaged
Hybrid
Heat _'_
system
runs for longer periods
of time.
Nearly
80% of the time
it's
running,
it is operating
in
low-stage,
and
your
indoor
temperature
will remain
more
consistent
with fewer drafts, better
humidity
control,
enhanced
comfort
and
enhanced
energy
efficiency.
FIRE,
EXPLOSION
HAZARD
Failure to follow this warning
could result in death, personal
injury and/or property
damage.
Do not attempt
to light by hand.
FIRE,
EXPLISION,
ELECTRICAL
SHOCK
HAZARD
Failure to follow this hazard warning
could result in personal
injury,
death and/or property
damage.
1. Do not turn off the electrical
power
to unit without
first
turning
off the gas supply.
2. Before
attempting
to
start
the
gas
heating
section.
familiarize
yourself
with all the procedures
that must be
followed.
Starting
or Shutting
Off Unit
To start the unit:
1. Turn on the electrical power
supply to unit.
2. Turn on the gas supply to unit.
3. Select
temperature
and set User Interface
(UI) control
to
desired mode.
To shut off unit:
Note:
If the unit is being
shut down because
of a malfunction,
call
your dealer as soon as possible.
1. Set UI control to OFF.
2. Turn off gas supply to unit.
3. Turn off electrical power
supply to unit.
OPERATING
YOUR
UNIT
The operation
of your unit is controlled
by the Infinity _" UI. You
simply program
the UI and it maintains
the indoor temperature
at the
level you select. See UI manual
for detailed
instructions.
To better protect your investment
and to eliminate
unnecessary
ser-
vice calls, familiarize
yourself
with the following
facts:
Step 1--Cooling
Mode
With the SYSTEM
control set to COOL. your unit will run in cool-
ing mode until the indoor temperature
is lowered
to the level you
have selected.
On extremely
hot days, your unit will run for longer
periods at a time and have shorter "off" periods than on moderate
days.
Step 2--Hybrid
Heating
Mode
Your Hybrid
Heat system
combines
the strengths
of two heating
sources;
an electric heat
pump and
a gas furnace.
A Hybrid Heat
system provides
more control over your monthly
energy bills by al-
lowing
you to choose
the most economical
method
of heating.
As
conditions
change,
the system
automatically
switches
between
the
two sources to maintain
greater efficiency
than with a single-source
heating
system.
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