Lochinvar 2072, 502 operation manual Ladder diagram continued, Installation & Operation Manual

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