Envision NDS026 Series, Installation Manual

17

NDS OUTDOOR SPLIT INSTALLATION MANUAL

Wiring Schematics cont.

Dual Capacity Split with IntelliStart - 208-230/60/1 cont.

Fused L2

240V L1

HP

240V L2

P6

Microprocessor 

Logic Control 
(DC Voltage)

P1

Fused  L2

R

C

CC-GND

NO

CR2

COM

NO

NC

CR4

COM

F1-10A 240V

NO

CR1

COM

1

2

3

4

5

6

7

8

1

2

3

P4

1

2

3

C

P2

Down

C

1

2

3

4

5

6

7

Shut

SL1 In

Not

SL1 Out

Used

NOTE 2

Acc Com

Acc NC

Acc NO

1

2

3

P3

1

2

3

NO

NC

CR3

COM

F

1-

10

A 

24

0V

6

5

4

8

7

P5

12

1

2

9

10

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

On

SW3

On

SW2

1 

2 
3 
4 
5 
6 
7 
8 Pulse L / Constant L

Not Used

Not Used

Fan / Comp

Loop / Well

Test / Norm

Outputs / Norm

Inputs /  Norm

Dual/ Single Capacity
Normal/Finish on 2

nd

No RPM / RPM
Must be On
Envision / E Series or Premier

ECM 2 

Air Flow 
Settings

1 
2 
3 
4 
5 

St

at

us

 L

ED

 P

C

B 

SW4

R
R
R
R
R
G
Y
R

T

C

NOTE 

1

SL1 In

SL1 Out

Optional 

Remote Unit 

Without 

Loop Pump

N

O

T 

U

S

ED

N

O

T 

U

S

ED

CC

CCHI

Fused  L1

Black (7)

RV

FD

Field Selection Dips - #1 On, #6 On, #7 On 
Not Used
FD thermistor (loop<15 °F,well<30°F) Lockout 
High Pressure 
Low  Pressure / Comfort Alert 
Not Used
Microprocessor malfunction* 
Not Used
Not Used

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 

Not Used
FD thermistor (loop <15°F, well<30°F)  
High Pressure 
Low  Pressure / Comfort Alert 
Not Used
Not Used 
Not Used
Not Used

Current Fault Status

 #6 Off, #7 On 

Y1 
Y2 

O 

Not Used
Not Used

SL1 
SL2

Inputs

 #6 On, #7 Off 

Lo Capacity Compressor 

RV 

FAN 

Not Used

Loop Pump 1 

Outputs

 #6 Off, #7 Off 

Not Used

Outputs2

Diagnostic Modes

*Green LED not flashing

Hi Capacity Compressor 

Loop Pump 2 

Not Used

Not Used
Not Used
Not Used
Not Used
Not Used
Not Used

Not Used

Not Used

Tan

Orange

Orange

Not Used

Not Used

Yellow

Yellow

LP

Blue
Blue

Black

Black

L

Comfort Alert

NOTE 5

CC

Comfort

Alert

R

Y

C

Y2

C

S

R

Unit  Power 

208-230/60/1

G

L2

L1

CC

Run

Capacitor

NOTE 6

Y 2

Y

L

R

C

DC

Sol

Data

Port

 Comfort Alert  

Physical Layout

POWER

ALERT

TRIP

Logic Board 

- 

Physical Layout 

1 2 3

1

P4

On

Off

SW1

24

0V

 -

L2

24

0V

 -

L1

Fu

se

d 

L2

Fu

se

d 

L2

Fu

se

d 

L2

F1

F1

R
R

Microprocessor

CR2- Loop 
Pump

N.O.

24

0V

 -

L2

24

0V

 -

L1

C
C

1
2
3
4
5
6
7
8

9

10
11
12
13
14
15
16

P6

1
2
3
4
5
6
7

8
9

10
11
12
13
14

P5

Fu

se

d 

L2

Fu

se

d 

L1

CR1- DHW 

Pump

N.O.

CC

CC-GND

CCLO
CCHI

1

2

3

P3

2

3

4

5

6

7

8

9

10

11

12

1

On

Off

SW2

2

3

4

5

6

7

8

1

On

Off

SW3

2

3

4

5

P1

1 2 3 4

5 6 7

8

2

3

4

5

P2

6

7

1

R C Y1 Y2

G

O

W

L

Shut

Down

ACC

NO

ACC

NC

ACC

COM

C

C

SL1

IN

SL 1

Out

SL 2

IN

SL 2

Out

N.O.

CR4-

Com

N.O.

CR3-

Com

N.C.

L2

L1

Heat 

Recovery 

Unit

Pump

 Loop Pump(s)

1/2 HP 208-230/60/1

Pump

FP

Black (1)

Violet (2)

Violet (3)

White (4)

Black (5)

Yellow (6)

Orange (14 )

Brown (15)

Tan (16)

Red (11)

Red (12)

Black

Black

Green/Yellow

Crankcase Heater

Not Used

Not Used

3

4

9

11

2

10

8

1

12

5

14

13

6

7

G

Gray(9)

Yellow (8)

Thermistor

Light  Emitting Diode-Green 

Relay Coil

Capacitor w/ Bleed Resistor

Switch - High Pressure

Switch - Low Pressure

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 -

CR1 -

CR2-

CR3 -

CR4 -

F1 and F2 -

FP -

HP -

LP -

RV -

SW1 -

SW2 -

SW3 -

Compressor Contactor

Loop Pump Relay 1

Fuses

Freeze Detection sensor

High Pressure Switch

Low  Pressure Switch

Reversing Valve Coil

Not Used

DIP Package 8 Position

DIP Package 5 Position

Relay Contacts -

N.O., N.C.

G

T

1

3

2

P

L1

Loop Pump Relay 2

Not Used

CS -

Compressor Solenoid

Not Used

Legend

Crankcase Heater

CA -

Comfort Alert

1 - Connection of remote unit that does not have a loop pump

  for slave operation.

2 - 24V Accessory  relay (see SW2 -3 for description of operation)

3 - Field installed DPDT dual fuel relay. (Required for dual fuel

 installation)

4 - DHW pump only in models with hot water generation option.

5 - Comfort Alert fault output to Premier Control Board

6 -  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.             

Notes

Run Winding

Active

Start

Common

IntelliStart

2

1

PB2

Red

           Comfort Alert

CS

 +

-

DC SOL

Red

Blue

Blue

Pink

Black

Black

T2

T1

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 

97P788-02      4/19/10