Lochinvar 400-801 operation manual 2Ladder Diagram

Page 55

Outdoor Knight XL Installation & Operation Manual

10 Diagrams (continued)

Figure 10-2Ladder Diagram

120VAC

JUNCTION BOX

NEUTRAL

TERMINAL STRIP

 

TERMINAL STRIP

120V SUPPLY "L"

 

120V SUPPLY "N"

 

 

L

 

 

IN

GROUND

ON / OFF

INTEGRATED CONTROL

 

 

 

SWITCH

 

 

 

BLOWER

 

X1-6

F2

 

X1-1

1

2

 

3.15A

 

 

 

 

 

F1

 

X1-2

3

 

 

 

 

 

 

5A

SYSTEM PUMP

SYSTEM PUMP

 

 

 

RELAY

X1-3

RELAY

 

 

 

DHW PUMP

 

DHW PUMP

 

 

 

RELAY

X1-4

RELAY

 

 

 

 

 

 

 

 

BOILER PUMP

 

BOILER PUMP

 

 

F3

RELAY

 

RELAY

 

 

.8A

24V DC

 

 

 

X5-9

 

SUPPLY

X5-1

 

 

 

 

 

120 VAC

 

 

 

 

 

3.5A

 

 

 

 

SYSTEM

PUMP

CONTACTS

BOILER

PUMP

CONTACTS

DHW

PUMP

CONTACTS

RELAY BOARD

L

OUT

SYSTEM

PUMP

BOILER

PUMP

DHW

PUMP

X4-3

KB 801

ONLY

CN5-5

PC INTERFACE

ALARM BELL

1

24 VAC

 

 

CONNECTION BOARD

 

 

 

 

 

 

 

 

 

 

 

 

 

INTEGRATED

 

LWCO

 

 

 

 

 

 

CONTROL

 

 

 

FLOW

 

CN5-14

X4-8

 

 

 

 

 

 

 

 

 

 

 

CN7-3

 

CN7-4

11

SWITCH

12

 

 

 

 

 

CN5-10

X4-12

 

24 VAC

 

 

 

 

 

 

 

 

 

 

 

 

CN7-1

 

CN7-2

 

 

 

 

 

 

 

HEAT/LOOPDEMAND 1

 

 

 

CN5-7

X4-1

 

 

 

 

 

 

19

 

20

 

 

 

 

 

 

 

HEAT/LOOPDEMAND 2

 

 

 

CN5-13

X4-9

 

 

 

 

 

 

17

 

18

 

 

 

 

 

 

 

HEAT/LOOPDEMAND 3

 

 

 

CN5-6

X4-2

 

 

 

 

 

 

15

 

16

 

 

 

 

 

 

 

TANK

 

 

 

 

 

 

 

THERMOSTAT

 

 

 

CN5-12

X4-10

 

 

 

 

 

 

13

 

14

 

 

 

 

 

 

 

LOW GAS

HIGH GAS

 

 

 

 

 

 

 

PRESSURE

PRESSURE

 

 

 

 

 

 

 

SWITCH

SWITCH

 

 

 

CN5-11

X4-11

 

 

 

 

 

 

10

 

9

 

 

 

CN5-3

X4-5

 

 

INTEGRATED

 

 

 

 

 

 

LOUVER

 

 

 

 

 

 

CONTROL

 

5

 

 

 

 

 

 

 

RELAY COIL

 

 

 

 

 

 

 

 

24VAC

6

 

 

 

 

 

 

 

LOUVER

7

 

 

 

 

 

 

 

PROVING SWITCH

CN5-4

X4-4

 

 

 

 

 

 

 

 

 

 

 

 

 

X7

 

 

8

 

 

 

 

RIBBON CABLE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X5-2

 

 

 

 

O-TEMP HEX SW

BLOCKED

 

X5-10

 

 

X5-6

 

DRAIN SWITCH

 

S2

 

 

 

 

INLET

 

 

 

 

 

 

 

SENSOR

 

 

 

 

AIR PRESSURE

 

 

 

 

 

X5-4

 

 

 

X5-11

OPERATING S1a

 

 

SWITCH

 

SENSOR

 

 

 

 

 

 

 

 

HIGH LIMIT

S1b

X5-12

 

GAS VALVE

 

 

 

 

 

 

X2-2

SENSOR

 

 

 

 

 

 

2

6

FLUE SENSOR

S3a

X5-5

X5-13

 

GAS VALVE

X2-1

RELAY

FLUE

S3b

SENSOR

X5-14

13

CONNECTION

BOARD

BLOWER

1

X5-7

 

2

X5-16

 

ALARM

1

 

CN5-1

 

X4-7

 

 

 

 

 

 

 

CONTACTS

2

 

CN5-8

 

X4-14

 

 

 

 

 

 

 

 

 

 

 

 

3

 

CN5-2

 

X4-6

 

 

RUN-TIME

 

 

 

 

 

CONTACTS

4

 

CN5-9

 

X4-13

 

 

 

 

 

 

 

 

 

SYSTEM

S6

21

 

CN6

 

X6

 

 

 

 

 

 

SENSOR

 

22

 

CN6

 

X6

 

OUTDOOR

S5

23

 

CN6

 

X6

 

 

 

 

 

 

SENSOR

 

24

 

 

 

 

 

TANK

S4

26

 

CN6

 

X6

 

 

 

 

 

 

SENSOR

 

27

 

CN6

 

X6

 

SHIELD

 

29

 

CN6

 

 

 

 

A

 

30

 

 

X6

 

CASCADE

 

 

 

 

 

 

B

 

31

 

CN6

 

X6

 

 

 

 

 

 

 

 

SHIELD

 

32

 

CN6

 

X6

 

 

 

 

 

 

 

BMS +

 

33

 

CN6

 

X6

 

0-10V

 

 

 

 

 

IN -

34

 

CN6

 

X6

 

 

 

 

 

 

 

CN6

 

 

 

SYS PUMP

+

 

35

 

 

X6

 

0-10V

 

 

 

 

 

IN

-

36

 

CN6

 

X6

 

 

 

 

 

BLR PUMP

+

 

37

 

CN6

 

X6

 

0-10V

 

 

 

 

 

OUT

-

38

 

CN6

 

X6

 

 

 

 

 

RATE

+

 

39

 

CN6

 

X6

 

0-10V

 

 

 

 

 

OUT

-

40

 

 

 

 

 

 

 

 

M

 

 

SHIELD

 

41

 

 

 

 

 

A

 

42

CN8-1

X6-1

O

X4-1

X9-2

 

 

D

MODBUS B

 

43

CN8-2

X6-2

B

X4-2

X9-1

SHIELD

 

44

CN8-3

X6-3 U

X4-3

X9-3

 

 

 

S

 

 

 

 

 

 

 

 

 

 

4 X5-8

5 X5-15

TR2

X1-7

FLAME ROD

SPARK

ROD

CAUTION HIGH VOLTAGE SPARK LEAD

NOTES:

1.Where possible, switches are shown without utilities (gas, water or electricity) connected to the unit. As such, actual switch states may vary from those shown on diagrams depending upon whether utilities are connected or a fault condition is present.

2.See wiring diagram for additional notes.

BOX DEPICTS

OPTIONAL ITEMS

LOW VOLTAGE 120 VAC HIGH VOLTAGE

LADDER DIAGRAM

LBL20141 REV D

55

Image 55
Contents Outdoor Knight XL Models 400 Contents Please read before proceeding When servicing boilerStainless steel heat exchanger Outdoor Knight XL How it worksModel Models 601 Outdoor Knight XL Boiler Ahri Rating RatingsDetermine boiler location Installation must comply withBefore locating the boiler, check Prevent combustion air contamination Provide clearancesOutdoor vent / air intake location Flooring and foundationPrepare boiler Install flue pipe assembly Models 400Remove boiler from wood pallet Models 701 3Install flue pipe assembly Models 701Gas conversions Model 4Installing Propane Orifice ModelLeveling the boiler Models 601Hydronic piping TEE with 1 Fitting on TOP Nipple Close Nipple Near boiler piping components Flow switch adjustmentCirculator sizing Near boiler piping connectionsVariable speed pump option Pressure Head Feet20F 25F 30F 35F Model 7Single Boiler Multiple Temperatures 8Single Boiler Primary/Secondary Piping Manifold Pipe Sizes in Inches mm Number of Units10Multiple Boilers Primary/Secondary Piping Temperature Wires to Loop Sensors 120VAC to Gas connections Connecting gas supply pipingPropane Gas Natural gasInches Check inlet gas supplyGas pressure Gas valve replacementLow voltage connections Field wiringInstallation must comply with Line voltage connectionsThermostat Outdoor temperature sensorHigh gas pressure switch Low gas pressure switchModBus Flow switchAlarm contacts Wiring of the cascade3Low Voltage Field Wiring Connections Condensate drain Condensate disposalFill and test water system Freeze protection when usedStart-up Check/control water chemistryInspect/check condensate lines and fittings Check for gas leaksCheck thermostat circuits Inspect/fill condensate systemCheck system and boiler Final checks before starting the boilerStart the boiler If boiler does not start correctlyFor Your Safety Read Before Operating Natural Gas Propane Set space heating operationSet domestic hot water DHW operation Verify DHW modeConfiguration of the cascade How the control module operates Operating informationGeneral How the boiler operatesProtection features Temperature controlBoiler temperature regulation Cascade Outdoor reset operation, if usedOperation Display Sequence of operationStandby, ready to start a new cycle User Access modesInstaller Outdoor Knight XL control moduleCall for Heat Information Dial Function Service technician Maintenance Maintenance and annual startupOwner maintenance Maintenance Check boiler relief valve Flue vent system and air pipingCheck water system Check expansion tankInspect ignition and flame sense electrodes Check ignition ground wiringCheck all boiler wiring Check control settingsModel Kit Part Component Number Description Check flame signalCleaning boiler heat exchanger Review with ownerHigh Voltage Diagrams2Ladder Diagram
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Manual 48 pages 50.5 Kb

400-801 specifications

The Lochinvar 400-801 is a high-efficiency commercial boiler that embodies advanced engineering and cutting-edge technology. Designed for a variety of commercial applications, this boiler is known for its reliability, efficiency, and robust performance.

One of the standout features of the Lochinvar 400-801 is its high thermal efficiency, which can reach up to 99%. This efficiency not only reduces fuel consumption but also lowers operating costs, making it an economical choice for businesses seeking to minimize overhead. The boiler employs a stainless steel fire-tube heat exchanger that ensures optimal heat transfer and durability. This construction allows for enhanced resistance to corrosion, thereby extending the boiler's lifespan.

The Lochinvar 400-801 is equipped with advanced control technologies that enhance its performance. With its built-in SMART SYSTEM control, users can easily monitor and manage the boiler’s operations, optimizing performance while ensuring ease of use. This control system features a user-friendly interface that provides real-time data, including temperature settings, pressure readings, and operational status, allowing for quick diagnostics and efficient troubleshooting.

Safety is paramount in the design of the Lochinvar 400-801. The boiler includes a comprehensive safety system that incorporates multiple safety interlocks and a venting system that prevents backflow and ensures safe exhaust. Moreover, the unit is designed to operate with minimal noise, making it suitable for environments where noise reduction is crucial.

Installation and maintenance of the Lochinvar 400-801 are straightforward, thanks to its compact design and multiple venting options. The low-profile construction allows for flexibility in placement, making it an ideal fit for tight spaces. Maintenance tasks are simplified with accessible components, minimizing downtime and ensuring the system operates efficiently over its lifespan.

In conclusion, the Lochinvar 400-801 stands out in the commercial boiler market with its blend of efficiency, reliability, and innovation. With its advanced technologies and features, businesses can achieve significant energy savings while ensuring comfortable and consistent heat for various applications. The Lochinvar 400-801 is an investment in quality and performance, backed by a well-established brand in the heating industry. Whether for a new installation or a replacement, this boiler offers a comprehensive solution for commercial heating needs.