Goodman MES96 U Series Service And Troubleshooting page 10

SYSTEM OPERATION
115 VOLT LINE VOLTAGE CONNECTION OF
ACCESSORIES (HUMIDIFIER AND ELECTRONIC AIR
CLEANER
The furnace integrated control module is equipped with line
voltage accessory terminals for controlling power to an optional
field-supplied humidifier and/or electronic air cleaner.
The accessory load specifications are as follows:
Turn OFF power to the furnace before installing any accessories.
Follow the humidifier or air cleaner manufacturers' instructions for
locating, mounting, grounding, and controlling these accessories.
Accessory wiring connections are to be made through the 1/4"
quick connect terminals provided on the furnace integrated control
module. The humidifier and electronic air cleaner hot terminals
are identified as HUM and EAC. The humidifier and electronic
air cleaner neutral terminals are identified as NEUTRAL. All field
wiring must conform to applicable codes. Connections should
be made as shown.
If it is necessary for the installer to supply additional line
voltage wiring to the inside of the furnace, the wiring must
conform to all local codes, and have a minimum temperature
rating of 105°C. All line voltage wire splices must be made
inside the furnace junction box.
The integrated control module single humidifier terminal
(HUM) is energized with 115 volts whenever the induced
draft blower is energized. This terminal can also be used
to provide 115 volt power to a humidifier transformer. The
remaining primary transformer wire would be connected to the
Line N on the control board. The integrated control module
electronic air cleaner terminals (EAC) are energized with 115
volts whenever the circulator blower is energized.
NOTE: Wire routing must not to interfere with circulator blower
operation, filter removal, or routine maintenance.
10
T
O AVOID THE RISK OF ELECTRICAL SHOCK, INJURY, OR DEATH, THE
FURNACE MUST BE ELECTRICALLY GROUNDED IN ACCORDANCE WITH LOCAL
CODES OR, IN THEIR ABSENCE, WITH THE LATEST EDITION OF THE
N E C
ATIONAL LECTRIC ODE.
HIGH VOLTAGE
D ALL
ISCONNECT POWER BEFORE SERVICING OR
CHANGING ANY ELECTRICAL WIRING.
F
SOURCES MAY BE PRESENT.
PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
If it is necessary for the installer to supply additional line
voltage wiring to the inside of the furnace, the wiring must
conform to all local codes, and have a minimum temperature
rating of 105°C. All line voltage wire splices must be made
inside the furnace junction box.
24 VOLT THERMOSTAT WIRING
NOTE: Low voltage connections can be made through either
the right or left side panel. Wire routing must not interfere
with circulator blower operation, filter removal, or routine
maintenance.
A 40 V.A. transformer and an integrated electronic control are
built into the furnace to allow use with most cooling equipment.
Consult the wiring diagram, located in the Technical Manual
or on the blower door for further details of 115 Volt and 24
Volt wiring.
THERMOSTAT WIRING
The single stage furnace will have a "W" terminal and will use
a single stage thermostat. The following drawing illustrates
the typical field wiring for a heat only single stage system and
a single stage heating/single stage cooling system. Refer to
the following figures for proper connections to the integrated
control module.
WARNING
WARNING
M
ULTIPLE POWER
AILURE TO DO SO MAY CAUSE