Lennox 2SG13B, 4SG13B User's Information Manual

USER'S INFORMA'fION MANUAL

(2,4)SG13 Series

Gas eating/Electric Cooling Package Unit

Congratulations...

...your outdoor heating/cooling package unit is a valuable
piece of equipment, designed and manufactured by the
most modern methods. Proper care of your unit should
result in many years of service and comfort.

To keep your operating costs low and to eliminate unnec-
essary service calls, we have provided a few guidelines.
These guidelines will help you understand how your
heating/cooling unit operates and how to maintain it so
you can get years of safe and dependable service. Read
all the instructions in this manual, and keep all manuals

for future reference.

GAMA Certified E_;=CE.OY

CERTbFIED

The Gas Appliance
Manufacturers Association

(GAMA) symbol verifies that

Annual Fuel Utilization Efficiency (AFUE) ratings for our

gas package heating/cooling units have been derived from
U.S. Government standard tests.

6AS-r|REB

_, WARNING

FIRE OR EXPLOSION HAZARD

Failure to follow the safety warnings
exactly could result in serious injury,
death, or property damage.

= Do not store or use gasoline or other

flammable vapors and liquids in the
vicinity of this or any other appliance.

=What to do if you smell gas:

• Do not try to light any appliance.

• Do not touch any electrical switch; do
not use any phone in your building.

• Immediately call your gas supplier from
a neighbor's phone. Follow the gas

supplier's instructions.

• if you cannot reach the gas supplier,
call the fire department.

LISTED

Manufactured By

A.A.C.

A Lennox International Inc. Company

421 Monroe Street

Bellevue, OH 44811

IIIlllUilllllUIlliII

# 48368H005 Save these instructionsfor future reference Page 1

= Installation and service must be per=

formed by a qualified installer, service
agency or the gas supplier.

TABLE OF CONTENTS

IMPORTANT SAFETY INFORMATION ................ 2

OPERATING YOUR UNIT .................................... 3

MAINTENANCE OF YOUR UNIT ......................... 5

REPAIR PARTS .................................................... 7

WARRANTY ......................................................... 8

IMPORTANT SAFETY INFORMATION

This unit is equipped with an ignition device which
automatically lights the burners. See OPERATING
YOUR UNIT on page 3 for information on lighting
and shutting down the unit.

,

Should the gas supply fail to shut off or if overheat-
ing occurs, shut off the gas valve to the unit before

shutting off the electrical supply.

Do not use the unit if any part has been under
water. Aflood-damaged unit is extremely danger-
ous. Attempts to use the unit can result in fire or
explosion. A qualified service agency should be

contacted to inspect the unit and to replace all gas

controls, control system parts, electrical parts that

have been wet, or the unit if deemed necessary.

6. Examine the unit installation to determine that:

A. All flue gas carrying areas external to the unit,

such as the vent hood, are clear and free of
obstructions.

For your safety, read the following before operating your

gas heating/electric cooling package unit:

1. The area around the unit must be kept clear and
free of combustible materials, gasoline, and other
flammable vapors and liquids.

,

This unit requires air for combustion and ventilation
to ensure both proper and safe operation. Combus-
tion air is brought in through the condenser section.

Do not block or obstruct the condenser coil or

condenser fan opening.

B. Return air duct connection(s) is physically

sound and sealed to the unit casing.

C. Physical support of the unit is sound without

sagging, cracks, gaps, etc.

D. There are no obvious signs of deterioration of

the unit.

E. Burner flames are in good adjustment (see

Burner Flame beginning on page 6).

It is important that you conduct a physical inspec-

tion of the unit at least twice a year. It is also

recommended that the unit should be inspected by

a qualified service agent at least once per year.

Page 2 #48368H005

OPERATING YOUR UNIT

These units are equipped with an ignition device which
automatically lights the burners. Do not try to light the

burners by hand.

,

Wait 5 minutes to clear out any gas, then smell for
gas (including at the bottom of the unit near the
ground). If you smell gas, stop and follow the direc-
tions in WHAT TO DO IF YOU SMELL GAS on page

1. If you don't smell gas, continue to next step.

Before operating, smell around furnace area for gas. Be sure
to smell near the unit base because some gas is heavier than

air and will settle to the lowest point. See WHAT TO DO IF
YOU SMELL GAS on page 1if the odor of gas is present.

Use only your hand to slide the gas control switch; never
use tools. If the switch will not move by hand, don't try to

repair it. Call a qualified service technician. Force or

attempted repair may result in a fire or explosion.

Lighting Instructions

1. STOP! Read the previous safety information.

2. Set the thermostat to the lowest setting.

3. Turn off all electric power to the unit.

4. Remove the burner compartment access panel.

5. This appliance is equipped with an automatic ignition
device. Do not try to light the burners by hand.

6. Turn the gas control knob, or slide the gas control
switch, to "OFF" (see Figure 1).

8. Turn the gas control knob, or slide the gas control
switch, to "ON".

9. Replace the burner compartment access panel.

10. Turn on all electric power to the unit.

11. Set the thermostat to the desired setting.

12. If the unit will not operate, follow the instructions found
below in To Turn Off Gas to Unit and call your

service technician or gas supplier.

Operating Sequence

When the thermostat calls for heat, the vent motor will
purge the system for 30 seconds (nominal). When the
prepurge time has expired, the gas valve will open for direct
ignition. When burners are lit, the flame sensor will sense
flame and keep the gas valve open. If the flame sensor
does not sense that a flame has been established, it will
shut off the gas valve. The ignition system is designed to go
through three trials for ignition. If flame still has not been
established after the third trial, the system will go into
lockout. After 1 hour, the system will try three more times.

Gas Valves

Gas

Control

Knob

Gas Control Switch

If the system goes into lockout, it can be reset by turning
your thermostat down or off for 10 seconds and then back
to the desired point.

When the room thermostat is satisfied, the electrical circuit
to the gas valve is opened and the burners are shut off.

Shutting Down the Unit

Toshut down the unit, set the thermostat to the "OFF" position.

To Turn Off Gas to Unit

1. Set the thermostat to the lowest setting.

2. Turn off all electric power to the unit if service is to be

performed.

3. Remove the burner compartment access panel.

4. Turn the gas control knob, or slide the gas control

switch, to "OFF" (see Figure 1). Do not force.

5. Replace the burner compartment access panel.

Figure 1

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