Lennox MS8 SERIES Installation And Service Procedures page 71

TYPICAL OUTDOOR UNIT WIRING DIAGRAM — 24 KBTU SYSTEMS (208 / 230V) HEAT PUMP
WARNING
Please don't touch any terminal when
the voltage of terminal P(DC+) and
N(DC−) at AP1 is higher than 30V to
prevent the risk of electrical shock!
YEGN
G
TERMINAL
BLOCK
BU
BU
N(1)
BK
2
BN
3
BN
L1
L2
G
YEGN
G
XT1
L1
L2
POWER
TYPICAL OUTDOOR UNIT WIRING DIAGRAM — 30 KBTU SYSTEMS (208 / 230V) HEAT PUMP
RT2
RT4 RT1
0 0
WH WH
MANUAL T−SENSOR
MAGNETIC
RING
BK
COM−INNER
L1
L1
BN
4V
AC−L
BU
N
PE
L1
VT VT
YEGN
Electronic
expansion
4YV
G valve
4−WAY
(OPTIONAL)
VALVE
FIGURE 81
FIGURE 82
Page 71
OVERLOAD
MAGNETIC
RT3 WH WH
RING
0 0
BU
BK
BU
COMP−U
OVC−COMP
AP1
OFAN
FA
RD
EKV
M1
G
CAP.
C1
BN
FAN MOTOR
PROTECTOR
SAT
COMP.
YEGN
G
U
COMP
W
V
G
L2 L2
L2
YE
RD
X1
YE RD
COMP−V COMP−W
INDC1 INDC2
OG
WH
L
REACTOR
YEGN
G
Corp. 1244-L9