Amana GUIA Series Service Instructions Manual page 63

PRODUCT DESIGN
Y
C
G
Y C G
Y C
Remote
Condensing Unit
(Single-Stage Cooling)
Single-Stage Heating with Single-Stage Cooling
Typical Field Wiring for Single-Stage Gas Furnaces
(24 VAC Control Circuit)
Thermostat Wiring - 80% GUIS, GCIS & 90% GUSA-
BX Two-Stage Furnaces
As a two-stage furnace, the furnace's integrated control
module provides terminals for both "W1" and "W2" and "Y"
thermostat connections. This allows the furnace to support
the following system applications: 'Two-Stage Heating Only'
or 'Two-Stage Heating with Single-Stage Cooling'. Refer to
the following figures for proper connections to the integrated
control module.
W2
W1
C
G R
Y C G R W1
Two-Stage Heating Only
Y
G
Y C G
Y C
Remote
Condensing Unit
Two-Stage Heating with Single-Stage Cooling
Typical Field Wiring for GUIS and GCIS
Two-Stage Gas Furnaces
(24 VAC Control Circuit)
Thermostat
Single-Stage Heating
with
Single-Stage Cooling
W
R
Furnace Integrated
R W
Control Module
Thermostat
Two-Stage Heating
Furnace Integrated
W2
Control Module
W2
Thermostat
Two-Stage Heating
with
Single-Stage Cooling
W1
R
Furnace Integrated
R W1 W2
Control Module
Y
G
Y B/C G
Y C
Remote
Condensing Unit
(Single-Stage Cooling)
Single-Stage Heating with Single-Stage Cooling
NOTE: To apply a single-stage heating thermostat, the
thermostat selector jumper on the integrated control
module must be set on single stage.
W2
Y
G
Y B/C G
Y C
Remote
Condensing Unit
Two-Stage Heating with Single-Stage Cooling
Typical Field Wiring for GUSA-BX
Two-Stage Gas Furnaces
(24VAC Control CIrcuit)
Thermostat
Single-Stage Heating
with
Single-Stage Cooling
W
R
Furnace Integrated
DEHUM
R W1 W2
TWIN
Control Module
Twinning
Communication
[Optional]
Thermostat
Two-Stage Heating
with
Single-Stage Cooling
W1
R
Furnace Integrated
R W1 W2 DEHUM
TWIN
Control Module
Twinning
Communication
[Optional]
63
Rev. 1