MG3P Installation Manual

46
Figure 49. Two-Stage Fixed Speed Motor Control Board
GREEN
RED
STAT US
NOT USED
NOT USED
CONNECTION TO
FURNACE CONTROL
BOARD
MOTOR WIRE
HARNESS
RCY1
TWIN
DHUM
W1
THERMOSTAT
EXPANSION
PORT
COOL
HEAT
FAN SPEED
1 2 3
4
5 6 7
8
OFF ON
CONNECTION
TERMINAL TO
TWIN FURNACES
11
4
1
8
7
10
5
2
9
3
12
6
LINE- N
XMFR-N
LINE
LINE
XMFR
EAC
HUM
LINE- N
14325
R
C
Y/Y2
W2
G
W1
Y1
GREEN
OFF
ON
EXPANSION
PORT
FOR WIRING TO THE
MOTOR CONTROL
BOARD
60
RED
STATUS
90
120
180
YELLOW
AUTO
STAGE
BLOWER
OFF
DELAY
THERMOSTAT CONNECTIONS
NEUTRALS
(FLAME)
FUSE
INPUTS
Figure 50. Two-Stage Furnace Control Board