Lennox SL280UHNV - X- Troubleshooting

Page 46
VII- Wiring and Sequence of Operation
J159
P159
IGNITOR
1
2
NOTE-
IF ANY WIRE IN THIS APPLIANCE IS REPLACED,IT
MUST BE REPLACED WITH WIRE OF LIKE SIZE,
HEATING UNITS-GAS
S51
L1
N
N N N
EQUIPMENT
GROUND
N N
P159
J159
BLUE
BLUE
CB8
WARNING-
ELECTRIC SHOCK HAZARD,CAN CAUSE INJURY
OR DEATH.UNIT MUST BE GROUNDED IN ACCORDANCE
WITH NATIONAL AND LOCAL CODES.
DENOTES OPTIONAL COMPONENTS
LINE VOLTAGE FIELD INSTALLED
CLASS II VOLTAGE FIELD WIRING
HUMIDIFIER
24V
24VAC
SEC
NO
C
GV1
GAS
VALVE
R33
S10
INTEGRATED
CONTROL
A92
THERMOSTAT HEAT ANTICIPATION SETTING
INTEGRATED CONTROL
UNIT
BLOWER SPEED CHART
CB8
S128
HIGH HEAT &
PRESSURE
SWITCH
PRIMARY
GAS
LIMIT
S47
CIRCUIT
BREAKER
T1
TRANSFORMER
120V ACC
(IF USED)
G
N
L1
GV1
GAS
VALVE
B3
S51
C
M
S10
COMBUSTION AIR
INDUCER MOTOR
B6
P84
J84
INTERLOCK
DOOR
L13
POWER
CHOKE
P48
P49
J48
P48
B3
L13
24VAC
COM
Y2
W2
W1
G
Y1
R
DS
C
3
2
POWER
CHOKE
INDOOR
BLOWER
MOTOR
ADJUST
INDOOR
BLOWER
MOTOR
Supersedes
Litho U.S.A.
C
J58
P58
A92
7
11
5
12
HLI
RO(OUT)
6
8
TH
GND
TR
MV COM
J156
P156
FLAME
SENSOR
A92
FLAME
SENSE
IGN
2
3
1
Q22
EAC
HUM
P3
J3
5
WHITE
120V
T1
BLACK
B6
J84
COMBUSTION AIR
BLOWER MOTOR
3
COMBUSTION AIR
BLOWER MOTOR
P84
B6
2
DOOR
INTERLOCK
4
120VAC
EAC
HUM
XFMR
CIRC
LINE
XFMR
CIRC
2
1
HI/LOW HEAT
PRESSURE SWITCH
S128
PS2
MVH
PS1
C
4
10
9
GND
HOT
6
5
4
3
2
1
3
2
1
4
5
6
5
4
3
2
1
P49
O
W914
W951
S1
INTEGRATED
CONTROL
9
4
11
2 HEAT 2 COOL
CUT W914 JUMPER LABELED "DEHUM OR HARMONY"
FROM DS TO R, AT A92 CONTROL BOARD WHEN
USED WITH COMFORTSENSE 7000.
4
J159
P159
FLAME
ROLLOUT
SWITCH
HONEYWELL VALVE
1
2
3
1
4
L13 USED ON 1HP ONLY
JUMPER W915 FROM Y1 TO Y2 IS FACTORY INSTALLED
AT A92 CONTROL BOARD. LEAVE IN FOR ONE STAGE
COOL THERMOSTAT. CUT JUMPER Y1 TO Y2 FOR
TWO STAGE COOL THERMOSTAT.
4
BURNER
R33
IGNITOR
FLAME
SENSOR
5
6
FACTORY DEFAULT IS FOR A
2 STAGE THERMOSTAT
FIELD SUPPLIED ACC WIRE
6
FACTORY SHIPPED SETTINGS
ALL
HEAT COOL
FACTORY DEFAULT
HIGH
NOTE: SEE INSTALLATION INSTRUCTIONS FOR
PROCEDURE TO SET CORRECT BLOWER SPEED FOR
SPECIFIC COOLING TONNAGE BEING APPLIED,
AND HEATING TEMPERATURE RISE DESIRED.
1
HEAT
COOL
FAN
ON
R
W1
Y1
G
W2
Y2
COOL
2
2
AUTO
ROOM THERMOSTAT
TWO STAGE
HEAT,COOL
8
7
LENNOX
3
RO(IN)
HEAT PUMP
DEHUM OR
HARMONY
CUT W951 JUMPER FROM O TO R, LABELED
"HEAT PUMP", AT A92 CONTROL BOARD, WHEN
USED FOR DUAL FUEL APPLICATIONS
W915
TYPICAL SYSTEM SHOWN FOR 2 HEAT/2 COOL WITH A
CONVENTIONAL THERMOSTAT. SEE INSTALLATION
INSTRUCTIONS FOR CONNECTIONS TO OTHER
EQUIPMENT AND ACCESSORIES.
RATING, INSULATION THICKNESS, AND TERMINATION
7
7
120V
EAC
9
K1
K4
K7
K6
K8
10
M
.65 AMP
2010
S47
BROWN
BLUE
BLUE
PURPLE
YELLOW
PINK
PURPLE
YELLOW
PURPLE
RED
4
BLACK
LOW HEAT
9
8
7
6
5
4
3 2 1
TERMINAL BOARD
10
11
12
TB1
W1
W2
G
Y2
Y1
C
L O
DS
10
R
C
l
l
+
-
R
C
l
l
+
-
INDOOR
OUTDOOR
l
+
l
-
1 2
3
4
5
6 7
9
10
11
12
13
14
15
L1
J3
P79
NEUTRALS
J2
TB83
TB84
TB78
SENSOR
DISCHARGE
OUTDOOR AIR
TB82
RS BUS
LINK
8
A92
INTEGRATED
CONTROL
C
R
DH
8
DIAGNOSTIC
PUSH
BUTTON
ACC
HUM
SEVEN
SEGMENT
LED
SEE HUM VIEWS
W2
S1
ROOM THERMOSTAT
C
Y1
OUTDOOR
UNIT
Y1
G
W1
R
C
Y2
Y2
L
l
+
l
-
OUTDOOR
SENSOR
DISCHARGE
AIR SENSOR
INDOOR
EQUIPMENT
OUTDOOR
EQUIPMENT
RS BUS
LINK
C
R
l
+
l
-
C
R
l
+
l
-
8
SL280UH060NV36A
SL280UH080NV48B
SL280UH080NV60C
P3
J3
C
C
9
J79
5V Tx Rx C
SL280UH100NV60C
FACTORY DEFAULT
MODEL
CHARACTER ON
7-SEGMENT LED
(W/DOT ON)
060NV36A
A
C
d
E
080NV48B
080NV60C
100NV60C
BLOWER
MOTOR
SIZE
1/2 HP
1 HP
1 HP
1 HP
HUMIDIFIER
HUMIDIFIER
HUMIDIFIER
120VAC
HUM
AT IFC
HUM
AT IFC
24VAC
TO C
TO R OR H ON CS7000
TO N
TO L1
7 USE COPPER CONDUCTORS ONLY
DISCHARGE AND OUTDOOR AIR
TERMINALS ARE FOR icomfort USE ONLY
THERMOSTAT CONNECTIONS ARE FOR
NON-COMMUNICATING SYSTEM ONLY.
REFER TO icomfort INSTALLATION
INSTRUCTIONS FOR COMMUNICATING
SYSTEMS.
DH AND L TERMINALS ARE ONLY USED
WITH icomfort THERMOSTAT
J3
P3
MVL
P79
ORANGE
YELLOW
BLACK
WHITE
WHITE
P84
J84
WHITE
SIT VALVE
.70 AMP
Integrated Control Self Check
When there is a call for heat, the communicating enabled
integrated control runs a self check. The control checks
for S10 primary limit and the S47 thermal switch normally
closed contacts. The control also checks for S102 high
heat and S128 low heat prove switch normally open con-
tacts. Once self check is complete and all safety switches
are operational, heat call can continue.
NOTE - The ignition control thermostat selection DIP
switch is factory-set in the “TWO-STAGE” position.
WARNING
Fire Hazard. Use of aluminum wire with this product
may result in a re, causing property damage,
severe injury or death. Use copper wire only with
this product.
WARNING
Electric Shock Hazard. Can cause injury
or death. Unit must be properly grounded
in accordance with national and local
codes.