Electrostatic Discharge (Esd) Precautions Procedure; Introduction - Carrier 58TMA Installation, Start-Up, And Operating Instructions Manual

Canada CAN/CGA-B149.1- and .2-M91 Natural Gas and Propane
Installation Codes (NSCNGPIC) and Amendment No. 1. Wear
safety glasses and work gloves. Have fire extinguisher available
during start-up and adjustment procedures and service calls.
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 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.
These instructions cover minimum requirements and conform to
existing national standards and safety codes. In some instances,
these instructions exceed certain local codes and ordinances,
especially those that may not have kept up with changing residen-
tial construction practices. We require these instructions as a
minimum for a safe installation.
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS
PROCEDURE
Electrostatic discharge can affect electronic components.
Take precautions during furnace installation and servicing to
protect the furnace electronic control. Precautions will pre-
vent 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
electrostatic potential.
1. Disconnect all power to the furnace. DO NOT TOUCH THE
CONTROL OR ANY WIRE CONNECTED TO THE CON-
TROL PRIOR TO DISCHARGING YOUR BODY'S ELEC-
TROSTATIC 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 ungrounded
objects, etc.).
4. If you touch ungrounded objects (recharge your body with
static electricity), firmly touch furnace again before touching
control or wires.
5. Use this procedure for installed and uninstalled (ungrounded)
furnaces.
6. Before removing a new control from its container, discharge
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.

INTRODUCTION

The model 58TMA Series 100 Furnaces are available in sizes
65,000 through 123,000 Btuh input capacities.
The design of the downflow/horizontal gas-fired furnace is A.G.A.
and C.G.A. design-certified for natural and propane gases and for
installation on noncombustible flooring. The furnace may be
installed on combustible wood flooring when installed with the
accessory downflow subbase. This furnace is for installation in
.
alcoves, attics, crawlspaces, basements, closets, or utility rooms.
The design of this furnace line is not A.G.A. and C.G.A.
design-certified for installation in mobile homes, recreation ve-
hicles, or outdoors.
Before installing the furnace, refer to the current edition of the
NFGC. Canadian installations must be in accordance with NSC-
NGPIC and all authorities having jurisdiction. For further infor-
mation, the NFGC is available from National Fire Protection
Association Inc., Batterymarch Park, Quincy, MA 02269, Ameri-
can Gas Association, 1515 Wilson Boulevard, Arlington, VA
22209, or from Literature Distribution.
Application of this furnace should be indoors with special
attention given to vent sizing and material, gas input rate, air
temperature rise, and unit sizing. Improper installation or
misapplication of the furnace can require excessive servicing
or cause premature component failure.
Installation must conform to the regulations of the serving gas
supplier and the local building, heating, and plumbing codes in
effect in the area in which the installation is made, or in the
absence of local codes with the requirements of the NFGC.
This furnace is designed for a minimum continuous return-air
temperature of 60°F db or intermittent operation down to 55°F
such as when used with a night setback thermostat. Return-air
temperature must not exceed 85°F db.
To aid in installation, troubleshooting, and service, a status code
label is located on the blower component door. This label explains
how to use the LED status indicated on the furnace control which
is viewed through the sight glass on the door.
Improper installation, adjustment, alteration, service, mainte-
nance, or use can cause carbon monoxide poisoning, explo-
sion, fire, electrical shock, or other conditions which may
cause personal injury, loss of life, or property damage.
Consult a qualified installer, service agency, local gas sup-
plier, or your distributor or branch for information or assis-
tance. The qualified installer or agency must use only
factory-authorized and listed kits or accessories when modi-
fying this product. A failure to follow this warning could
result in electrical shock, fire, personal injury, or death.
For high-altitude installation, the high-altitude conversion kit must
be installed at or above 5500 ft above sea level.
For accessory installation details, refer to the applicable installa-
tion literature.
NOTE: Remove all shipping brackets and materials before oper-
ating the furnace.
2