Bryant 352MAV User Manual

Page 2

This is the safety-alert symbol

. When you see this symbol on

the furnace and in instructions or manuals, be alert to the potential
for personal injury.
Understand the signal words DANGER, WARNING, and CAU-
TION. These words are used with the safety-alert symbol. DAN-
GER identifies the most serious 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 would result in minor personal
injury or product and property damage. NOTE is used to highlight
suggestions which will result in enhanced installation, reliability,
or operation.

WARNING:

The ability to properly perform mainte-

nance on this equipment requires certain knowledge,
mechanical skills, tools, and equipment. If you do not
possess these, do not attempt to perform any maintenance
on this equipment other than those procedures recom-
mended in the User’s Manual. FAILURE TO FOLLOW
THIS WARNING COULD RESULT IN POSSIBLE
DAMAGE TO THIS EQUIPMENT, SERIOUS PER-
SONAL INJURY, OR DEATH.

WARNING:

Never store anything on, near, or in contact

with the furnace, such as:
1. Spray or aerosol cans, rags, brooms, dust mops,

vacuum cleaners, or other cleaning tools.

2. Soap powders, bleaches, waxes or other cleaning

compounds, plastic or plastic containers, gasoline,
kerosene, cigarette lighter fluid, dry cleaning fluids, or
other volatile fluids.

3. Paint thinners and other painting compounds, paper

bags, or other paper products.
A failure to follow this warning can cause corrosion of
the heat exchanger, fire, personal injury, or death.

CAUTION:

Label all wires prior to disconnection when

servicing controls. Wiring errors can cause improper and
dangerous operation.

INTRODUCTION

These instructions are written as if the furnace is installed in an
upflow application. An upflow furnace application is where the
blower is located below the combustion and controls section of the
furnace, and conditioned air is discharged upward. Since this
furnace can be installed in any of the 4 positions shown in Fig. 2,
you must revise your orientation to component location accord-
ingly.

ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS

CAUTION:

Electrostatic discharge can affect electronic

components. Take precautions during furnace installation
and servicing to protect the furnace electronic control.
Precautions will prevent electrostatic discharges from
personnel and hand tools which are held during the
procedure. These precautions will help to avoid exposing
the control to electrostatic discharge by putting the
furnace, the control, and the person at the same electro-
static potential.

1. Disconnect all power to the furnace. DO NOT TOUCH

THE CONTROL OR ANY WIRE CONNECTED TO THE
CONTROL PRIOR TO DISCHARGING YOUR BODY’S
ELECTROSTATIC CHARGE TO GROUND.

2. Firmly touch a clean, unpainted, metal surface of the

furnace chassis which is close to the control. Tools held in
a person’s hand during grounding will be satisfactorily
discharged.

3. After touching the chassis you may proceed to service the

control or connecting wires as long as you do nothing that
recharges your body with static electricity (for example; DO
NOT move or shuffle your feet, DO NOT touch un-
grounded objects, etc.).

4. If you touch ungrounded objects (recharge your body with

static electricity), firmly touch furnace again before touch-
ing control or wires.

5. Use this procedure for installed and uninstalled (un-

grounded) furnaces.

6. Before removing a new control from its container, dis-

charge your body’s electrostatic charge to ground to protect
the control from damage. If the control is to be installed in
a furnace, follow items 1 through 5 before bringing the
control or yourself into contact with the furnace. Put all
used AND new controls into containers before touching
ungrounded objects.

7. An ESD service kit (available from commercial sources)

may also be used to prevent ESD damage.

CARE AND MAINTENANCE

For continuing high performance and to minimize possible equip-
ment failure, it is essential that maintenance be performed on this
equipment. Consult your local dealer about proper maintenance
frequency and the availability of a maintenance contract.

WARNING:

Turn off the gas and electrical supplies to

the unit before performing any maintenance or service.
Follow the operating instructions on the label attached to
the furnace. Failure to follow this warning could result in
personal injury or death.

The minimum maintenance that should be performed on this
equipment is as follows:

1. Check and clean or replace air filter each month as required.

2. Check blower motor and wheel for cleanliness each heating

or cooling season.

3. Check electrical connections for tightness and controls for

proper operation each heating season. Service as necessary.

Fig. 2—Multipoise Orientation

A93041

UPFLOW

DOWNFLOW

HORIZONTAL

LEFT

AIRFLOW

HORIZONTAL

RIGHT

—2—