Safety Considerations; Clearances To Combustibles; Electrostatic Discharge (Esd) Precautions - Carrier 58MVP Installation, Start-Up, And Operating Instructions Manual

121 series
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SAFETY CONSIDERATIONS

Installing and servicing heating equipment can be hazardous due to
gas and electrical components. Only trained and qualified person-
nel should install, repair, or service heating equipment. Untrained
personnel can perform basic maintenance functions such as clean-
ing and replacing air filters. All other operations must be per-
formed by trained service personnel. When working on heating
equipment, observe precautions in literature, on tags, and on labels
attached to or shipped with unit and other safety precautions that
may apply.
Follow all safety codes. In the United States, follow all safety
codes including the National Fuel Gas Code (NFGC) NFPA No.
54-1992/ANSI Z223.1-1992. In Canada, refer to the current
edition of the National Standard of Canada CAN/CGA-B149.1-
and .2-M91 Natural Gas and Propane Installation Codes (NSC-
NGPIC). Wear safety glasses and work gloves. Have fire extin-
guisher 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 unit or in instructions and manuals,
be alert to potential for personal injury.
Understand the signal words DANGER, WARNING, and CAU-
TION. These words are used with safety-alert symbol. DANGER
identifies 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.
This appliance is equipped only for altitudes 0 - 2,000 ft (0-610 m) for use with natural
gas and propane. A conversion kit, supplied by the manufacturer, shall be used to convert to
the alternate fuel or elevation.
This direct-vent, forced-air furnace is for indoor installation in a building constructed
on site or in a manufactured (mobile) home when using factory authorized kit, see
rating plate. For installation in alcove or closet at minimum clearances from combustible
material as shown below.
This appliance requires a special venting system. Refer to the installation instructions for
parts list and method of installation. This furnace is for use with schedule-40 PVC, PVC-DWV,
or ABS-DWV pipe, and must not be vented in common with other gas-fired appliances.
Construction through which vent/air intake pipes may be installed is maximum 24 inches
(600 mm), minimum 3/4 inches (19 mm) thickness (including roofing materials).
TOP
1
1
1
#
For Installation on combustible floors only when installed on special base
No. KGASB0201ALL.
*
Clearance shown is for air inlet and air outlet end.
Horizontal position: Line contact is permissible only between lines formed by intersections
of top and two sides of furnace jacket, and building joists, studs, or framing.
120,000 BTU Input Furnaces require 1 inch bottom clearance to combustible materials.
Minimum front clearance for service is 30 inches. (762mm).
Ø
MINIMUM CLEARANCE TO COMBUSTIBLE MATERIAL
BOTTOM
SIDES
BACK
0
0
0
#
0
0
*
0
1
0
→ Fig. 3—Clearances to Combustibles

ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS

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.
VENT
FRONT
Ø
3
0
UPFLOW
Ø
3
0
DOWNFLOW
Ø
3
0
HORIZONTAL
3
INCHES
320611-101 REV. G
A93060

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