Service Manual

OPERATIONS INSTRUCTIONS
10
Introduction
This is a Category lV furnace. This furnace uses a pressur-
ized venting system and must be installed per National and
local codes requirements and the installation manual that
was shipped with the furnace.
The *MEC96 34.5" furnace is one of the products in our
newly redesigned line of shorter chassis furnaces. It is avail-
able in the following sizes and suitable for up flow / horizon-
tal installation.
*MEC960303ANA *CEC960402BNAA
*MEC960403ANA *CEC960603BNAA
*MEC960603ANA *CEC960803BNAA
*MEC960302BNA *CEC961005CNAA
*MEC960402BNA Suitable for counter
*MEC960603BNA flow or horizontal
*MEC960803BNA installation.
*MEC960804CNA
*MEC961004CNA
*MEC961005CNA
*MEC961205DNA
Safety
Please adhere to the following warnings and cautions when
installing, adjusting, altering, servicing, or operating the fur-
nace.
T
O PREVENT PERSONAL INJURY OR DEATH DUE TO IMPROPER INSTALLATION,
ADJUSTMENT, ALTERATION, SERVICE OR MAINTENANCE, REFER TO THIS
MANUAL.
F
OR ADDITIONAL ASSISTANCE OR INFORMATION, CONSULT A
QUALIFIED INSTALLER, SERVICE AGENCY OR THE GAS SUPPLIER.
WARNING
WARNING
T
HIS PRODUCT CONTAINS OR PRODUCES A CHEMICAL OR CHEMICALS WHICH
MAY CAUSE SERIOUS ILLNESS OR DEATH AND WHICH ARE KNOWN TO THE
S
TATE OF
C
ALIFORNIA TO CAUSE CANCER, BIRTH DEFECTS OR OTHER
REPRODUCTIVE HARM.
WARNING
TO PREVENT POSSIBLE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH
DUE TO ELECTRICAL SHOCK, THE FURNACE MUST BE LOCATED TO PROTECT
THE ELECTRICAL COMPONENTS FROM WATER.
Charge (ESD) Precautions
NOTE: Discharge body’s static electricity before touching
unit. An electrostatic discharge can adversely affect electri-
cal components.
Use the following precautions during furnace installation and
servicing to protect the integrated control module from dam-
age. By putting the furnace, the control, and the person at
the same electrostatic potential, these steps will help avoid
exposing the integrated control module to electrostatic dis-
charge. This procedure is applicable to both installed and
uninstalled (ungrounded) furnaces.
1. Disconnect all power to the furnace. Do not touch the
integrated control module 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 near the control. Any tools held in a person’s
hand during grounding will be discharged.
3. Service integrated control module or connecting wiring
following the discharge process in Step 2. Use caution
not to recharge your body with static electricity; (i.e., do
not move or shuffle your feet, do not touch ungrounded
objects, etc.). If you come in contact with an ungrounded
object, repeat Step 2 before touching control or wires.
4. Discharge any static electricity from your body to ground
before removing a new control from its container. Follow
Steps 1 through 3 if installing the control on a furnace.
Return any old or new controls to their containers before
touching any ungrounded object.
Product Application
This product is designed for use as a residential home gas
furnace. It is not designed or certified for use in mobile home,
trailer, or recreational vehicle applications.
This furnace can be used in the following non-industrial
commercial applications: Schools, Office buildings, Churches,
Retail stores, Nursing homes, Hotels/motels, Common or
office areas. In such applications, the furnace must be installed
with the installation instructions.
The *MEC96 furnaces are ETL certified appliances and are
appropriate for use with natural or propane gas. (NOTE: If
using propane gas, a propane conversion kit is required).
*MEC96 furnaces are dual certified.
Dual certification means that the combustion air inlet pipe is
optional and the furnace can be vented as a:
Non-direct vent (single pipe) central forced air furnace
in which combustion air is taken from the installation
area or from air ducted from the outside or,
Direct vent (dual pipe) central forced air furnace in which
all combustion air supplied directly to the furnace burn-
ers through a special air intake system outlined in
this manual and the installation instructions.
To ensure proper installation, operation and servicing, thor-
oughly read the installation and service manuals for specif-
ics pertaining to the installation, servicing and application of
this product.
WARNING
P
OSSIBLE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH DUE TO FIRE,
EXPLOSION, SMOKE, SOOT, CONDENSTAION, ELECTRICAL SHOCK OR CARBON
MONOXIDE MAY RESULT FROM IMPROPER INSTALLATION, REPAIR, OPERATION,
OR MAINTENANCE OF THIS PRODUCT.