Installation & Operation Manual

 

 

 

10 Ladder diagram (continued)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CONNECTION BOARD1 1-CN4

 

ALARM CONTACTS

 

 

 

RELAYALARM

ALARM SILENCE

 

1BOARDCONNECTION

CN5-5

 

 

RUNTIME CONTACTS

 

 

 

2BOARDCONNECTION

 

OUTDOOR S5SENSOR

POOL2ND

SUPPLY S8SENSOR

 

POOL/SYSTEM

SUPPLY S6SENSOR

 

POOL/SYSTEM

RETURN S7SENSOR

 

 

 

 

 

S2SENSORINLET

 

S1SENSOROUTLET

 

S9SENSOROUTLET2ND

 

 

 

 

 

1BOARDCONNECTION

TANK S4SENSOR

CASCADE SHIELD

8-CN6

SHIELD

3-CN11-X6

A

MODBUS RTU

B

MODBUS

INTERFACE BOARD

 

1

4-CN4

2

 

 

 

RELAYLOUVER

 

 

 

 

 

 

20K

10K

 

 

 

CN1

-1

 

 

 

 

 

CN6

-1

1-CN13-X6

2-CN12-X6

 

 

 

 

 

 

 

 

 

 

 

CN5-11

 

CN4-5

CN4-6

 

 

 

 

 

 

CN1-2

 

 

 

 

CN1-5

 

 

CN1-6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CN6-6

 

 

X4-3

X4-1

 

X4-2

 

 

 

 

X3-3

 

X3-4

 

 

 

 

 

 

 

X6-13

 

X3-1

X3-2

 

X6-10

 

 

 

BOILER

X8-11

 

X8-19

POOL

 

X8-14

 

 

X8-13

 

 

 

 

 

X8-3

 

X8-2

 

X8-8

X8-1

 

 

 

 

 

X8-12

 

X8-18

 

X8-10

 

X8-20

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X4

 

X11

 

 

 

 

 

X6-3

 

 

 

 

PROBE

 

X6-12

X6-5

X6-1

 

 

 

 

X6-7

 

X6-16

 

X6-2

X13-1

 

X6-6

X6-15

 

X6-11

X6-14

X8-5

X8-15

 

X7-8

 

 

X7-4

 

X8-7

 

X8-17

 

 

X8-6

 

 

X8-16

 

 

 

 

 

 

 

 

 

 

 

SWITCHFLOW

 

TEST

 

 

 

 

 

 

 

 

 

 

1

 

CN5-7

 

CN5-8

CN5-9

 

CN5-3

CN5-10

 

CN5-12

4

CN6-4

CN6-9

 

5

 

 

CN6-10

 

7

 

CN6-3

 

 

7

 

 

CN1-8

 

 

 

 

 

 

 

 

 

 

J3-2

J3-4

 

3-J2J3-3

 

LOWWATER

J2J2

(

(

FLUEBLOCKED

 

GASHIGH

SWITCHPRESS

BOARDCONNECTION1

VALVEWAY3

24V

CN5-

OPEN

COM24V

CLOSE

ENABLE/1STAGE

2STAGE

3STAGE

4STAGE

TSTATTANK

CN5-

PROVINGLOUVER

0-10V

BMS

INPUT

CN6-

0-10V

RATE

OUTPUT

CN6-

A

CASCADE

B

CONNECTIONBOARD2

CN1-

+

SYSTEMPUMP

SPEEDINPUT -

 

DISPLAYBOARD

 

 

 

 

COMPUTER

 

 

 

 

 

2-1-

RESET

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(

(

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+

 

-

 

+

 

 

-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CUTOFF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

J3-6

J3-5

 

 

 

 

 

 

 

PRESSURE

GAS PRESS

 

 

 

 

 

 

CN5-6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AIR

LOW

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LBL20083 REV B

 

65

Page 65
Image 65
Lochinvar 2072, 502 operation manual Runtime Contacts 2BOARDCONNECTION Outdoor S5SENSOR POOL2ND

2072, 502 specifications

Lochinvar 2072,502 is an innovative and robust water-heating solution tailored for residential and commercial applications. This model represents a significant advancement in energy efficiency and performance, catering to the dynamic heating requirements of modern buildings.

One of the standout features of Lochinvar 2072,502 is its advanced thermal efficiency. With an impressive AFUE (Annual Fuel Utilization Efficiency) rating, the unit delivers exceptional heat output while minimizing energy consumption. This not only reduces utility bills for homeowners and businesses but also supports sustainability efforts by decreasing carbon footprints.

The Lochinvar 2072,502 incorporates cutting-edge technologies that set it apart in the market. It is equipped with advanced control systems that allow users to precisely manage heating outputs, ensuring optimal comfort while conserving energy. The user-friendly digital display provides real-time data, allowing for efficient monitoring and control.

Another significant characteristic of the Lochinvar 2072,502 is its robust stainless-steel construction. This feature enhances the unit's durability and longevity, ensuring reliable performance even in challenging conditions. The high-quality materials also contribute to maintaining consistent water temperatures, which is essential for both residential and commercial heating needs.

The Lochinvar 2072,502 operates silently, making it ideal for installations in areas where noise is a concern. Its compact design allows for flexible installation options, fitting seamlessly into various spaces, whether it’s a utility room, basement, or outdoor area.

Furthermore, the unit supports multiple venting options, accommodating different building architectures and layouts. This versatility makes it an ideal choice for new builds and retrofitting existing systems.

Maintenance is streamlined with the Lochinvar 2072,502, as it features a self-diagnostics system that simplifies troubleshooting. Regular service check-ups are made easier with accessible components, allowing technicians to perform maintenance tasks efficiently.

In summary, the Lochinvar 2072,502 stands out for its high efficiency, advanced technology, durability, and flexible installation options. It is an ideal choice for those seeking a reliable and technologically advanced water-heating solution that meets the challenges of contemporary heating demands while promoting energy savings and environmental responsibility.