Manual 2100-419E
Page
20 of 48
LOW VOLTAGE CONNECTIONS
These units use a grounded 24 volt AC low voltage
circuit.
The
“R”
terminal is the
hot
terminal and the
“C”
terminal is
grounded.
“G”
terminal or pins 6 and 1 of P2 are the
fan inputs
.
Both must be energized
for proper fan operation. This
is done automatically in the factory installed climate
control options. If the climate control option is
abandoned and connections are made directly to P2 both
pins 6 and 1 of P2 must be energized for proper
operation.
“Y”
terminal or pin 7 of P2 is the
compressor input
.
“B”
terminal or pin 8 of P2 is the
reversing valve input
.
The reversing valve must be energized for heating
mode.
“R”
terminal or pin 10 of P2 is
24 VAC hot
.
“C”
terminal or pin 11 of P2 is
24 VAC grounded.
“L”
terminal or pin 12 of P2 is
compressor lockout
output
. This terminal is activated on a high or low
pressure trip by the compressor control module. This
is a 24 VAC output.
“W2”
terminal or pin 9 of P2 is
second stage heat
(if
equipped). If the unit is equipped with an optional hot
water coil plenum box the water valve will be connected
to this terminal.
“O1”
terminal of pin 5 of P2 is the
ventilation input
.
This terminal energizes any factory installed ventilation
option.
R
O
F
S
N
O
I
T
C
E
N
N
O
C
E
G
A
T
L
O
V
W
O
L
L
O
R
T
N
O
C
C
D
D
y
l
n
O
n
a
F
G
e
z
i
g
r
e
n
E
e
d
o
M
g
n
il
o
o
C
G
,
Y
e
z
i
g
r
e
n
E
g
n
i
t
a
e
H
p
m
u
P
t
a
e
H
B
,
G
,
Y
e
z
i
g
r
e
n
E
g
n
i
t
a
e
H
e
g
a
t
S
d
n
2
)
d
e
y
o
l
p
m
e
f
i
(
2
W
,
G
e
z
i
g
r
e
n
E
n
o
i
t
a
l
i
t
n
e
V
1
O
,
G
e
z
i
g
r
e
n
E
FIGURE 14
BLOWER MOTOR LOW VOLTAGE
WIRE HARNESS PLUG
MIS-1285
VIEWED FROM PIN END
VIEWED FROM PIN END
Summary of Contents for QW242
Page 6: ...Manual 2100 419E Page 6 of 48 FIGURE 1 UNIT DIMENSIONS ...
Page 21: ...Manual 2100 419E Page 21 of 48 FIGURE 15 REMOTE THERMOSTAT WIRING DIAGRAM X OPTION ...
Page 41: ...Manual 2100 419E Page 41 of 48 FIGURE 27 WATER SOURCE HEAT PUMP COOLING CYCLE MIS 329 ...
Page 42: ...Manual 2100 419E Page 42 of 48 FIGURE 28 WATER SOURCE HEAT PUMP HEATING CYCLE MIS 328 ...
