16
NSZ/NDZ INSTALLATION MANUAL
Wiring Schematics
Dual Capacity Split Wiring Schematic - 208-230/60/1
HWL
HP
LP
FD
97P774-31 12 /8/08
St
at
us
L
ED
P
C
B
SW4
R
R
R
R
R
G
Y
R
T
T
240V L2
240V L1
240V L2
P6
Premier 2
Microprocessor
Logic Control
(DC Voltage)
P1
Fused L2
R
C
CC-GND
NO
CR2
COM
F1-10A 240V
Fused L2
NO
CR1
COM
1
2
3
4
5
6
7
8
1
2
3
P4
Pink
Black
Blue
Orange
Orange
Pink
Yellow
Yellow
1
2
3
C
P2
Down
C
1
2
3
4
5
6
7
Shut
SL1 In
Not
SL1 Out
Used
NOTE 1
Acc Com
Acc NC
Acc NO
1
2
3
P3
1
2
3
Main Logic PCB
F1-10A
240V
Tan
6
5
4
8
7
P5
12
1
2
9
10
3
4
9
11
2
10
8
1
12
5
3
13
14
15
16
11
G
W
O
R
C
Y1
Y2
LO
On
SW1
1
2
3
4
5
6
7
8
9
10
11
12
ECM2
Air Flow
Settings
Black
Blue
14
13
6
7
CC
NO
NC
CR4
COM
NO
NC
CR3
COM
RV
CCHI
Not Used
Not Used
On
SW3
On
SW2
1
2
3
4
5
6
7
8
No Htg3 / Htg3
Dehum / Norm
Fan / Comp
Loop / Well
Test / Norm
Outputs / Norm
Inputs / Norm
2 Speed / 1 Speed
Normal / Finish on 2
nd
(Note 2)
No RPM / RPM
Electric Heat / Normal
Envision / E Series or Premier
1
2
3
4
5
Pulse L / Constant L (NOTE 4)
Field Selection Dips - #1 On, #6 On, #7 On
Drain pan overflow Lockout
FD thermistor (loop<15°F,well<30°F) Lockout
High Pressure
Low Pressure / Comfort Alert
ECM2 RPM < 100 rpm Lockout
Microprocessor malfunction*
HWL thermistor > 130°F
DHW pump switch off
Drain
Water Flow
High Press
Low Press / CA
Air Flow
Status
DHW Limit
DHW off
LED
Normal Display Mode
#1 Off, #6 On, #7 On
Drain pan overflow
FD thermistor (loop<15°F, well< 30°F)
High Pressure
Low Pressure / Comfort Alert
ECM2 RPM < 100 rpm
Not Used
HWL thermistor > 130°F
DHW pump switch off
Current Fault Status
#6 Off, #7 On
Y1
Y2
O
G
W
SL1
SL2
--
Inputs
#6 On, #7 Off
Compressor Lo
Compressor Hi
RV
FAN
DHW Pump
Loop Pump 1
Loop Pump 2
--
Outputs
#6 Off, #7 Off
Blower Lo
Blower Med
Blower Hi
Aux Heat #1
Aux Heat #2
AuxHeat #3
Aux Heat #4
--
Outputs 2
Diagnostic Modes
*Green LED not flashing
Thermistor
Light emitting diode - Green
Relay coil
Capacitor w/ bleed resistor
Switch - Condensate overflow
Switch - High pressure
Switch - Low pressure
Switch -Hot Water On/Off
Polarized connector
Factory Low voltage wiring
Factory Line voltage wiring
Field low voltage wiring
Field line voltage wiring
Optional block
DC Voltage PCB traces
Internal junction
Quick connect terminal
Wire nut
Field wire lug
Ground
Fuse
CC -
CO -
CR 1 -
CR 2 -
CR 3 -
CR 4 -
F1 and F2 -
FD -
HE -
HP -
LP -
PB1, PB2 -
PS -
RV -
SW1 -
SW2 -
SW3 -
SW4 -
TS -
Compressor Contactor
Condensate overflow sensor
DHW pump relay
Loop pump relay
Fuses
Freeze Detection Sensor
Heater element
High pressure switch
Low pressure switch
Power blocks
Power strip
Reversing Valve coil
DIP package 12 position
DIP package 8 position
DIP package 5 position
Hot water pump enable switch
Thermal limit switch
Legend
Relay Contacts -
N.O., N.C.
G
T
1
3
2
P
L1
PSC Fan Speed Relay
PSC Fan Power Relay
ER 1 to ER4 -
Aux heat stage relays
HWL -
Hot water limit sensor
SC -
Start Contactor
Start Relay
SR -
CS -
Compressor Solenoid **DC Coil**
CA -
Comfort Alert
Y1
Y2
O
R
C
L
C
R
Fossil Fuel
Furnace
Thermostat
24 VAC
Common
Common
24 VAC
Fault Signal
Reversing Valve
2 nd Stage Compressor
1st Stage Compressor
Y1
Y2
O
R
C
LO
EZ Split
G
G
Fan
W
W
Auxiliary Heat Relay
Duel Fuel Wiring Diagram
Using Field Installed Relay
Note : Field installed DPST dual fuel relay
( Required for dual fuel installation )
Auxiliary Heat Relay
P2
P1
Shut
Auxiliary
Heat Relay
Down
= chassis
LED Flash Code Description
Green
Solid
Module Has Power
Red
Solid
Y1 Present But Compressor Not Running
Code 1
Long Run Time
Code 2
System Pressure Trip
Code 3
Short Cycling
Code 4
Locked Rotor
Code 5
Open Circuit
Code 6
Open Start Circuit
Code 7
Open Run Circuit
Code 8
Welded Contactor
Code 9
Low Voltage
Yellow
Comfort Alert Status
N
O
T
U
S
E
D
NOTE 5
DHW
Pump
Blu
3A
Fuse
Pink
Blu(17)
Ext Pump
1/2 hp Total
208-230/60/1
Pump
Pump
G
2
1
PB1
1
2
Yel(8)
Pink(13)
Unit Power
208-230/60/1
G
L2
L1
CC
C
S
R
Run
Capacitor
Red
Black
Blue
Tan
(16)
Comfort Alert
CC
Blk(1 )
Violet(2)
Comfort
Alert
R
Y
C
Violet(3)
Blk(5)
Yel(6)
L
Comfort Alert
NOTE 3
CS
+
-
DC SOL
Wht(4)
Brn(15)
Org(14)
Gry(9)
C
NOTE 6
SL1 In
SL1 Out
Optional
Remote Unit
Without
Loop Pump
Y2
Notes:
1 - 24V Accessory relay (see SW2-3 for description of operation)
2 - This Switch allows the unit to down stage with the t-stat when OFF and finish on
second stage when ON. Finish second stage reduces stage changing in recip
dual capacity compressors and should be ON for unzoned Dual Cap E-Series or
Premier 2 speed units.
3 - Comfort Alert fault output to Premier Control Board
4 - SW2-8 must be in the OFF position for pulsed “L” lockout signal and in the ON
position for constant “L” lockout signal.
5 - DHW pump only in models with hot water generation option.
6 - Connection of remote unit that does not have a loop pump for slave operation.
