Amana GUIA Series Service Instructions Manual page 62

PRODUCT DESIGN
On all other 80% & 90% furnaces, accessory wiring con-
nections are to be made through the 1/4" quick connect
terminals provided on the furnace integrated control mod-
ule. The Humidifier and Electronic Air Cleaner hot and neu-
tral terminals are identified as HUM and EAC. All field wir-
ing must conform to applicable codes. Connections should
be made as shown below.
Control Module
Hot 120 VAC
{
Optional
Accessories
Accessory Wiring
(WR50A51 Ignition Control Shown,
WR50A50 & HSI 1-1A Ignition Controls Similar)
OPTIONAL
ACCESSORIES
ELECTRONIC
AIR CLEANER
120 VAC
HOT AND
PARK
TERMINALS
TERMINALS
12 PIN
CONNECTOR
Accessory Wiring
(WR50A55 Ignition Control Shown,
HSI-2 Ignition Control Similar)
INTEGRATED
CONTROL MODULE
HUMIDIFIER
ELECTRONIC
AIR CLEANER
OPTIONAL ACCESSORIES
Accessory Wiring
(WR50M-61 & 50V-61 Ignition Control)
62
Rev. 1
Neutral 120 VAC
Air Cleaner
Humidifier
HUMIDIFIER
HUM-N
EAC-N
INTEGRATED
120 VAC
CONTROL
NEUTRAL
MODULE
12 CIRCUIT
CONNECTOR
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 tempera-
ture rating of 105°C. All line voltage wire splices must be
made inside the furnace junction box.
The integrated control module humidifier terminals (HUM)
are energized with 115 volts whenever the induced draft blower
is energized. The integrated control module electronic air
cleaner terminals (EAC) are energized with 115 volts when-
ever the circulator blower is energized on all single stage
ignition controls.
NOTE: The EAC (Electronic Air Cleaner) terminals on the
two-stage variable speed integrated control module (50A51-
225 used on GUIV-CA/DX models & 50A51-235 used on
GUVA-AX models) will not energize when "G" from the ther-
mostat is connected to "G" on the Air Circulator Motor In-
terface Board. To energize the EAC terminals, the "G" wire
from the thermostat must be connected directly to the "G"
terminal on the two-stage integrated control module.
24 VOLT THERMOSTAT WIRING
NOTE: Low voltage connections can be made through ei-
ther the right or left side panel. Wire routing must not inter-
fere with circulator blower operation, filter removal, or rou-
tine maintenance.
A 40 V.A. transformer and an integrated electronic control
are built into the furnace to allow use with most cooling equip-
ment. 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 - 80% & 90% Single-Stage Furnaces
The single stage furnace will have a "W1" terminal and will
use a single stage thermostat. The following drawing illus-
trates the typical field wiring for a heat only single stage
system and a single stage heating/single stage cooling sys-
tem. Refer to the following figures for proper connections to
the integrated control module.
G R
Y C G R
Single-Stage Heating Only
Thermostat
Single-Stage Heating
W
Furnace Integrated
W
Control Module