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W2
COM
W/W1
Y/Y2
R
G
Fig. 34 - - Typical Two- -Stage Field Wiring Diagram
24-V THERMOSTAT
TERMINALS
FUSE 3-AMP
3-AMP FUSE
SEC-2
LED OPERATION
COM
& DIAGNOSTIC LIGHT
COM
HI HT
BLOWER SPEED
COOL
TERMINALS
LO HT
SPARE 2
SPARE 1
EAC-2
115-VAC (L2)
NEUTRAL
CONNECTIONS
Fig. 35 - - Example of Two- -Stage Furnace Control
SET UP SWITCHES
LOW HEAT ONLY
AND BLOWER
OFF-DELAY
TWINNING AND/OR
COMPONENT TEST
TERMINAL
LHT
OFF
DLY
ACRDJ - AIR CONDITIONING
RELAY DISABLE JUMPER
TEST / TWIN
HUMIDIFIER TERMINAL
HUM
(24 VAC 0.5 AMPS MAX)
TRANSFORMER
24 VAC CONNECTIONS
PL1-LOW VO LTAGE
MAIN HARNESS CONNEC TOR
SEC-1
24VAC
115 VAC
BLOWER POWER (BL1)
CONNECTION
EAC TERMINAL
115 VAC 1.0 AMP MAX
EAC-1
L1
BL-1 PR-1
115 VAC LINE (L1)
INPUT
37
115 VAC
TRANSFORMER
PRIMARY
PL2 - HOT SURFACE
IGNITER/INDUCE R
MOTOR CONNECTION
HSI
HI LO
A11401
A11150
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