Carrier 48SD User's Information Manual

48SD
Gas Heating/Electric Cooling Units
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User's information Manual
A Guide To Operating and Maintaining
NEATING & COOLING
NOTE: Read the entire instruction manual before starting the
installation.
SAFETY CONSIDERATIONS
Note to Installer: This manual should be left with the equipment
user.
FIRE and EXPLOSION HAZARD
Failure to follow thiw warning could result in personal injury,
death and/or property damage.
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 and/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.
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.
I , = T
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury
and/or death.
Before performing recommended maintenance, be sure the
main power switch to unit is turned off and lock-out tag
installed.
UNIT INTRODUCTION
This 48SD unit is a small packaged gas heat/electric cooling
system that can provide year-round comfort.
Starting
or Shutting
Unit OFF
NOTE: Your combination heating/cooling unit is equipped with
an automatic direct spark ignition and power combustion blower.
A99338
Fig, 1-Gas Heating/Electric Cooling Unit
TO START (LIGHT) UNIT:
FIRE and EXPLOSION HAZARD
Failure to follow this warning could result in personal injury,
death and/or property damage.
Do not attempt to light by hand.
FIRE, EXPLOSION, 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, famil-
iarize yourself with all the procedures that must be
followed.
Refer to Fig. 2 for location of unit access panel. Refer to Fig. 3 for
location of gas valve. Refer to Fig. 4 while proceeding with the
following steps.
1. Set the temperature selector on room thermostat to the lowest
temperature setting and set system switch to HEAT.
2. (;lose the external manual gas shutoff valve.
3. Turn off the electrical supply to the unit.
4. Remove the front access panel with a 5/I6-in. nut driver.
5. Move the selector switch on the internal gas valve to the OFF
position and wait 5 minutes.
6. Move the selector switch on the internal gas valve to the ON
position.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1h_h__ PC 101 Printed in U.S.A. Catalog No. OM48-29 Pg 1 02-07 Replaces: OM48-20
Tab Ilal 6a