Electronic Air Cleaner; Ac Umidifier; Iring; Accessories - Goodman *MH8 Installation Instructions Manual

G G G G G S S S S S
A S A S A S A S A S U P P LY Y Y Y Y A N D U P P L U P P L U P P L U P P L A N D A N D A N D A N D
This furnace is equipped with a blower door interlock switch which
interrupts unit voltage when the blower door is opened for servic-
ing. Do not defeat this switch.
24 V 24 V 24 V 24 V 24 V T T T T T W W W W W
OLT OLT OLT OLT OLT HERMOSTAT HERMOSTAT HERMOSTAT HERMOSTAT HERMOSTAT

IRING

IRING IRING IRING IRING
NOTE: NOTE: NOTE: Wire routing must not interfere with circulator blower NOTE: NOTE:
operation, filter removal, or routine maintenance.
Low voltage connections can be made through either the right or
left side panel. Thermostat wiring entrance holes are located in the
blower compartment. The following figure shows connections for
a "heat only" system and "heat/cool system".
Heating
Room Thermostat
W
Furnace
Control
Typical Field Wiring (24 VAC Control Circuit)
This furnace is equipped with a 40 VA transformer to facilitate use
with most cooling equipment. Consult the wiring diagram, located
on the blower compartment door, for further details of 115 Volt and
24 Volt wiring.
A single-stage thermostat with only one heating stage can be used
to control this furnace.
S S S S S H H H H H A A A A A
ETTING ETTING THE THE EAT EAT NTICIPATOR NTICIPATOR
ETTING ETTING ETTING THE THE THE EAT EAT EAT NTICIPATOR NTICIPATOR NTICIPATOR
The following method should be used in measuring the amp draw
of the control circuit to assure proper adjustment of the thermostat
heat anticipator
• Wrap the "R" leg around a clip-on ammeter 10 times.
• Energize the furnace in the heat mode.
• Record the reading.
• Divide this reading by 10.
• Set the heat anticipator on the thermostat to match this
reading.
Example: If the reading on the ammeter is "4", divide this by 10. The
anticipator setting will be .4 amps.
P P P P P
IPING IPING IPING IPING IPING
Heating/Cooling
Room Thermostat
W
Remote
Condensing
Unit
Furnace
Control
115 V 115 V 115 V 115 V 115 V L L L L L C C C C C
OLT OLT OLT OLT OLT INE INE INE INE INE ONNECTION ONNECTION ONNECTION ONNECTION OF ONNECTION
(E (E (E (E (E A A A A A C C C C C
LECTRONIC LECTRONIC IR IR IR IR IR LEANER LEANER
LECTRONIC LECTRONIC LECTRONIC LEANER LEANER LEANER
HIGH VOLTAGE !
T
O AVOID PERSONAL INJURY
,
ELECTRICAL SHOCK DISCONNECT
BEFORE SERVICING OR CHANGING
.
WIRING
The furnace integrated control module is equipped with line volt-
age accessory terminals for controlling power to an optional field-
supplied electronic air cleaner.
The accessory load specifications are as follows:

Electronic Air Cleaner

Turn OFF power to the furnace before installing any accessories.
Follow the air cleaner manufacturers' instructions for locating, mount-
ing, grounding, and controlling these accessories. Accessory wir-
ing connections are to be made through the 1/4" quick connect
terminals provided on the furnace integrated control module. The
electronic air cleaner hot terminal is identified as EAC-H and the
neutral terminal is identified as NEUTRAL. All field wiring must
conform to applicable codes. Connections should be made as shown
in the following illustration.
Hot 120 VAC
Optional

Accessories

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 electronic air cleaner terminals (EAC)
are energized with 115 volts whenever the circulator blower is
energized.
24 V 24 V 24 V 24 V 24 V H H H H H
AC AC AC AC AC UMIDIFIER UMIDIFIER UMIDIFIER UMIDIFIER UMIDIFIER
The yellow wire connected to the I.D. Blower pressure switch is
powered anytime the pressure switch is closed and provides 24
VAC humidifier control. Remove the yellow wire and connect
the supplied brown jumper wire to the pressure switch terminal.
Reconnect the yellow wire to the "piggyback" terminal on the
brown jumper and then connect the 24 VAC line of the humidifier
to the stripped end of the brown wire. Using a wire nut or a field-
supplied quick connect terminal can make this connection. The
16
A A A A A
OF OF OF OF CCESSORIES CCESSORIES CCESSORIES CCESSORIES CCESSORIES
) ) ) ) )
WARNING
OR DEATH DUE TO
ELECTRICAL POWER
ANY ELECTRICAL
1.0 Amp maximum at 120 VAC
Control Module
Neutral 120 VAC
Air Cleaner