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Note: Installer:This manualshouldbeleftwiththeequipmentuser.
SAFETY CONSIDERATIONS
Improper installation, adjustment, alteration, service maintenance,
or use can cause explosion, fire, electrical shock, or other
conditions which may cause death, personal injury, or property
damage. Consult a qualified installer, service agency, or your
distributor or branch for information or assistance. The qualified
installer or agency must use factory--authorized kits or accessories
when modifying this product. Refer to the individual instructions
packaged with the kits or accessories when installing.
Follow all safety codes. Wear safety glasses, protective clothing,
and work gloves. Have a fire extinguisher available. Read these
instructions thoroughly and follow all warnings or cautions
included in literature and attached to the unit. consult local
building codes, the current editions of the National Fuel Gas
Code (NFGC) NFPA 54/ANSI Z223.1, and the National
Electrical Code (NEC) NFPA 70.
In Canada refer to the current editions of the National Standards
of Canada CAN/CSA--B149.1 and .2 Natural Gas and Propane
Installation codes, and Canadian Electrical Code CSA C22.1
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 serious hazards which will result in severe per-
sonal 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 sugges-
tions which will result in enhanced installation, reliability, or op-
eration.
FIRE,EXPLOSION,ELECTRICALSHOCKHAZARD
Failure to follow this warning could result in personalinjury,
death or property damage.
Installation and servicing of this e quipment can be hazardous
due to mechanical and electrical components. Only trained
and qualified personnel should install repair or service this
equipment.
!
WARNING
FIRE,EXPLOSION,ELECTRICALSHOCKHAZARD
Failure to follow this warning could result in personalinjury,
death or property damage.
Do not use this unit if any part has been under water.
Immediately call a qualified service technician to inspect the
unit and to replace any part of the control system which has
been under water.
!
WARNING
CUT HAZARD
Failure to follow this caution may result in personal injury .
When rem oving access panels or performing maintenance
functions inside yourunit,be awareof sharp sheetmetalparts
and screws. Although special care is taken to reduce sharp
edges to a minimum, be extremely careful when handling
parts or reaching into the unit.
!
CAUTION
FIRE AND EXPLOSION HAZARD
What to do if you smell gas:
1. Do not try to light any appliance.
2.Do nottouch anyelectrical switch;do notuseany phonein
your building.
3. Leave the building immediately.
4. Immediately call your gas supplier from a nearby phone.
Follow the gas supplier’s instructions.
5. If you cannot reach your gas supplier, call the fire
department.
!
WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personalinjury
and/or death.
Before performing recommended maintenance, be sure the
main power switch to unit is turned off and lock--out tag is
installed.
!
WARNING
FIRE,EXPLOSION,ELECTRICALSHOCKHAZARD
Failure to follow t his 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 th e gas heating section,
familiarize yourself with all the procedures that must be
followed.
!
WARNING
FIRE, EXPLOSION HAZARD
Failure to follow this warning could result in personalinjury,
death, and/or property damage.
Do not attempt to light by hand.
!
WARNING
UNIT INTRODUCTION
This 48XT--A 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 f or ideal heating,
depending on several factors. This unit uses Puron
®
, the ozone
friendly refrigerant, 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 .
Starting or Shutting Off Unit
Note:Yourcombination heating/cooling unit is equipped with an
automatic direct spark ignition and power combustion blower .
To start unit gas heat:
Refer to Fig.2 for location of unit front access panel. Refer to Fig.
3 for location of gas valve. Refer to Fig. 4 while proceeding with
the following steps.
1. Set thetemperature selectoron UI tothelowesttemperature
setting and set system switch to Emergency Heat.
2. Close the external manual gas shutoff valve.