WIRING DIAGRAMS - MAIN UNIT CONNECTIONS MODELS 495,000 - 745,000 BTU/HR (CONTINUED)

10

13

1

4

7

10

13

11

14

2

5

8

11

14

12

15

3

6

9

12

15

 

 

 

 

 

 

G

 

 

CHASSIS GROUND

G

 

120VAC

 

 

1

BK

 

BK

W

SUPPLY

 

E

 

 

 

2

W

SPLICE

W

 

W

120VA

 

 

 

 

 

 

 

C

 

 

 

 

BK

 

BK

 

 

 

 

 

 

 

PUMP

 

 

Y

SPLICE

Y

 

 

 

SPLICE5

3

2

1

F

9

12

15

 

Y

8

11

14

R/O

 

7

10

13

R

SPLICE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

T

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

O

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GY

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GY

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PV MV/PV MV

 

 

 

 

 

 

BURNER

G

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GROUND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VALVE #1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HOT SURFACE IGNITER

HI-LOW FIRE

FULL FIRE

 

 

 

 

 

 

 

 

 

Y

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LOW AIR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COM

 

 

 

 

 

 

 

PV MV/PV MV

 

 

 

 

 

 

 

 

 

 

 

 

INDICATOR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AIR PRESSURE

VALVE #2

 

 

SWITCH

 

 

 

 

 

 

 

BLOWER

 

BR

GR

 

W

 

GROUND

MAIN UNIT - GAS VALVES - BLOWER PRESSURE SWITCH

 

 

 

Y

BL

 

 

 

 

9

8

6

 

24 VAC

SPLICE

SPLICE

SPLICE

 

 

 

BK

LOW VOLTAGE

XFMR.

1

4

7

10

2

5

8

11

3

6

9

12

NEL

 

O

 

 

 

 

 

 

BK

 

O

 

 

3

6

9

12

 

 

Y

 

 

2

5

8

11

 

 

BL

 

 

1

4

7

10

A

 

R/O

 

 

 

 

 

 

 

O

 

 

 

 

O

R

BK

 

OA SENSOR

 

 

 

 

 

 

 

 

CN7 OPERATOR

 

 

 

 

 

CN3

 

CN8

CN1

 

 

 

 

2

INLET

 

 

 

 

 

 

1

PROBE

 

 

SENSOR

 

 

 

 

 

 

 

 

 

4

 

ON

ENABLE

 

 

 

CN4

 

 

 

 

 

 

 

3

SHUTDOWN

DISABLE

 

 

CN2

PR

 

O.A.SHUTDOWN

 

 

 

 

 

 

 

CN5

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

 

SYS/

O.A. MAX.

RATIO

 

 

 

TANK

 

 

 

 

PR

 

OPTIONAL I/O RESET

 

 

 

 

 

CN6

CN1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CN9

 

OFF

 

 

 

 

 

TO

 

 

 

DIFFERENTIAL

HIGH-FIRE

CN9

 

SETPOINT

OFFSET

 

 

 

 

 

 

 

 

OPERATOR

W

3 4

 

C

 

 

 

 

2

 

 

 

1

 

120VAC

BR

 

POWER

 

 

 

 

 

BK

6

BK 1

1

2

BK

2

W

 

2

4

 

 

 

 

 

 

 

BK

LOUVER/DAMPER

 

 

120 VAC RELAY

 

 

OPTION BOX "A"

 

TO LOUVER OR

 

DAMPER

3

4

 

C

 

 

W2 5

1 6 9

SILENCE ALARM BELL

G

BL BR

BR W

Y

TEST NORMALLY

CLOSED

TT

 

 

O/W

 

 

NC

NO

NO

 

C

C

C

 

 

O

PR

 

PR

 

 

Y

`

SILENCE ALARM BELL

 

 

 

 

 

 

 

 

LWCO

~~~~ ~~~~

 

 

BR/W

 

 

 

BR

 

PROBE

 

 

 

 

 

 

 

 

 

 

 

 

T

 

 

 

 

 

 

BR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

3

 

 

 

W

 

 

 

 

3

 

1

 

CONTACTS

BR

 

 

6

 

 

 

R

 

FOR

G

4

5

6

5

4

R

ALARM

 

O BL

BR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

O

7

8

9

9

8

7

O

 

 

PR

 

 

 

PR

 

 

P

 

"R1"

 

 

 

 

 

 

 

 

120VAC

RESETBL

 

 

 

 

 

 

 

TEST

PR

 

 

 

 

 

 

 

PR

 

 

 

 

 

 

 

 

O.C.

 

 

 

 

T

J1

CONTROL

 

 

 

 

 

VAC24

 

 

J3

Y

 

 

 

 

 

 

 

 

 

 

 

6

3

 

 

 

 

 

O

5

2

 

 

 

 

 

 

4

1

BR/W

 

 

J2

 

 

 

 

 

1

2

3

 

J4

P

 

 

P

 

 

GND

 

 

 

O

G

SPLICE

BR/W

BR

G

BR

O

 

 

 

 

~~~~

 

 

 

 

 

~~~~

 

 

 

 

 

LWCO

PROBE

CONTACTS

 

BR/W

 

 

 

 

FOR

 

 

 

 

T

LWCO ALARM

T

 

 

 

 

 

 

 

 

 

 

 

1

 

3

3

 

1

R R

4

5

6

6

5

4

 

7

8

 

 

8

7

O

 

 

LOUVER/DAMPER

 

T

 

120 VAC RELAY

 

 

6

W

 

 

 

 

 

2

BK

 

 

BK

 

 

 

 

 

4

 

 

 

BR

 

 

 

 

SPLICE

P

 

 

 

 

 

 

 

 

 

 

 

 

 

 

POWER

LWCO

 

 

 

 

P

 

P

 

 

 

 

 

 

 

 

 

 

 

 

 

Y

 

 

 

"C"

ALARM

 

 

BR/W

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CONTACTS

 

 

 

 

 

 

 

120VAC

P

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LOUVER/DAMPER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

24 VAC

BR/W

120 VAC RELAY

 

 

 

 

 

 

 

 

LWCO INDICATOR

 

 

 

 

 

 

 

 

POWER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RELAY

 

 

 

 

 

 

 

 

 

1

1

 

6

G

6

 

 

 

 

 

BK

 

BK

1

1

BK

 

 

 

W

 

2

2

 

2

2

 

 

 

 

W

 

BK

 

BK

2

2

 

 

 

 

"R1"

 

 

 

 

 

BK

 

 

 

4

G

4

 

 

 

 

 

 

 

 

 

 

 

 

 

BR

 

BR

 

 

 

O

 

 

TO LOUVER OR

 

 

 

 

 

TO LOUVER OR

BL

 

 

OPTION BOX "B"

 

 

 

 

 

DAMPER

 

 

 

DAMPER

 

WIRING CONNECTIONS DIAGRAM LBL20007 REV A

49

Page 49
Image 49
Lochinvar 065, 495, 000 - 2 service manual Main Unit GAS Valves Blower Pressure Switch

000 - 2, 065, 495 specifications

Lochinvar 000 - 2,495,065 is a cutting-edge water heating solution designed to meet the needs of modern residential and commercial applications. This high-efficiency unit combines advanced engineering with robust technologies, providing unmatched performance and reliability.

One of the standout features of the Lochinvar 000 - 2,495,065 is its high thermal efficiency, which often exceeds 95%. Utilizing condensing technology, the unit harnesses heat from exhaust gases, allowing it to recover otherwise lost energy, thereby reducing operational costs significantly. This efficiency not only lowers energy bills for users but also lessens the environmental impact by minimizing greenhouse gas emissions.

The Lochinvar 000 - 2,495,065 is equipped with a lightweight stainless steel heat exchanger. This construction ensures exceptional corrosion resistance and longevity, extending the lifespan of the unit while maintaining optimal performance. The stainless steel design also contributes to faster heating times, making it ideal for high-demand environments.

In terms of control technologies, the Lochinvar 000 - 2,495,065 features an intuitive touchscreen interface. This user-friendly design allows for seamless operation, real-time monitoring, and easy adjustments to temperature settings. Additionally, it facilitates remote diagnostics, promoting efficient maintenance and reducing downtime, which is crucial for busy facilities.

For enhanced safety, the Lochinvar 000 - 2,495,065 includes multiple safety mechanisms, such as over-temperature protection, flame safeguard, and leak detection systems. These safety features ensure secure operation and give users peace of mind.

Moreover, the unit is compatible with various fuel sources, including natural gas and propane, making it versatile and adaptable to different infrastructure requirements. This flexibility ensures that the Lochinvar 000 - 2,495,065 can be integrated into various settings, from residential homes to large commercial buildings.

Another significant characteristic is its compact design, allowing for easy installation in tight spaces. The footprint of the Lochinvar 000 - 2,495,065 makes it an ideal solution for applications where space is at a premium, without compromising on performance.

In summary, Lochinvar 000 - 2,495,065 represents a premium choice for water heating solutions, merging advanced technologies, high efficiency, and user-friendly design to cater to a wide range of heating needs while ensuring safety and sustainability.