Lochinvar 399 operation manual 2Ladder Diagram

Page 73

Installation & Operation Manual

13 Diagrams (continued)

Figure 13-2Ladder Diagram

 

 

 

BOX DEPICTS

 

 

 

OPTIONAL ITEMS

120VAC

JUNCTION BOX

NEUTRAL

GROUND

 

 

 

LOW VOLTAGE

TERMINAL STRIP

 

TERMINAL STRIP

120 VAC

120V SUPPLY "L"

 

120V SUPPLY "N"

HIGH VOLTAGE

ON / OFF

SWITCH

X1-6

X1-8

JUNCTION

BOX

X5-7

X6-7

X6-2

CN4-7

CN4-14

MANUAL RESET

HIGH LIMIT

 

PC

BELLALARM

INTERFACE

CN2-15

 

SWITCH

CN2-10

 

SILENCING

CN2-9

CN2-7

 

CN2-8

INTEGRATED CONTROL

 

 

 

L

 

L

 

 

 

 

SYSTEM PUMP

 

 

F5

 

 

X1-2

RELAY

 

IN

SYSTEM

OUT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5A

 

SYSTEM PUMP

 

 

 

 

PUMP

 

 

 

 

 

 

CONTACTS

 

 

 

RELAY

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BOILER PUMP

 

 

 

 

 

 

 

X1-4

RELAY

 

 

 

SYSTEM

 

 

 

 

 

 

 

BOILER

PUMP

 

 

BOILER PUMP

 

 

 

 

PUMP

 

 

 

RELAY

 

 

 

 

CONTACTS

 

 

 

 

 

DHW PUMP

 

 

 

 

 

 

 

X1-3

RELAY

 

 

 

 

 

 

 

 

 

 

 

BOILER

 

 

 

 

 

 

 

 

 

 

DHW PUMP

 

 

 

 

DHW

PUMP

 

 

 

 

 

 

 

 

 

RELAY

 

 

 

 

PUMP

 

 

 

 

 

 

 

 

CONTACTS

 

 

 

 

 

BLOWER

 

 

 

 

 

F4

 

X1-1

1

2

 

 

 

 

 

 

 

 

 

 

 

DHW

 

3.5A

BLOWER

 

 

 

 

RELAY BOARD

PUMP

F3

 

RELAY

 

3

 

 

 

 

 

 

 

 

 

 

 

1.25A

 

 

 

 

 

 

 

 

 

120 VAC

X1-5

JUNCTION BOX

 

 

 

 

 

 

 

 

 

 

F2

 

 

X6-8

 

 

 

 

 

3.5A

24 VAC

X6-3

RESISTOR

CN4-1

CONNECTION BOARD

 

 

 

 

 

 

 

 

 

 

 

 

 

CONNECTION

 

 

 

 

 

 

 

BOARD

CN5-1

 

 

 

CN5-2

 

INTEGRATED

 

 

 

 

 

LWCO

 

 

 

 

 

CONNECTION

 

 

CONTROL

 

 

FLOW

 

 

 

 

 

 

BOARD

 

 

 

 

 

 

SWITCH

 

CN5-3

 

CN5-4

CN4-6

X6-9

 

CN2-9

 

 

CN2-10

 

 

 

 

 

 

ROOM THERMOSTAT

 

 

 

 

 

 

 

ZONE CONTROL

 

 

 

CN4-13 X6-6

 

 

 

 

 

 

 

 

CN2-2

 

 

 

 

 

CN2-1

 

 

 

DHW

 

 

 

 

 

 

 

 

THERMOSTAT

 

 

 

CN4-5 X6-1

 

 

 

 

 

 

 

 

CN2-4

 

CONNECTION

LOW GAS

HIGH GAS

CN2-3

 

 

 

 

 

 

 

 

 

 

BOARD

PRESSURE

PRESSURE

 

 

X5-14

 

X6-4 CN4-9

 

 

SWITCH

SWITCH

CN4-3 X6-5

INTEGRATED

 

 

CN2-12

 

 

CN2-11

 

 

 

 

 

 

 

 

CONTROL

 

 

INTEGRATED

 

 

 

 

 

 

 

CONTROL

AUX. DEVICE

CN2-16

 

 

 

 

 

 

 

PILOT SUPPLY

 

 

DISPLAY

 

 

 

 

24VAC

CN2-15

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AUX. DEVICE

CN2-14

 

 

 

 

 

 

 

PROVING

 

 

 

 

 

 

 

CN4-2

X6-10

 

 

 

 

 

 

 

X3

 

AIR PRESSURE

CN2-13

 

X5-11

 

 

SWITCH

 

RIBBON CABLE

 

X5-4

 

 

X8

 

 

 

 

 

BLOCKED

X5-3

 

X5-8

DRAIN SWITCH

 

 

 

INLET

S2

 

X5-10

 

SENSOR

 

 

 

 

 

 

 

 

S1

X5-1

 

 

OUTLET

GAS VALVE

X2-2

 

SENSOR

 

 

 

 

 

S3

X5-2

 

GAS VALVE

FLUE

X5-9

X2-1

RELAY

 

 

 

SENSOR

 

 

 

 

 

 

 

 

 

BLOWER

1

X5-5

CONNECTION BOARD

 

 

 

 

 

 

CN2-6

CN4-11 X3-1

 

RUN-TIME

CN4-12

X3-3

 

CONTACTS

 

 

 

 

 

 

CN2-5

 

 

 

 

 

 

CN4-10

X3-4

 

 

ALARM

CN2-8

CN4-4

X3-2

 

CONTACTS

 

 

 

 

 

 

CN2-7

 

 

 

 

S6

 

CN3-8 X4-8

SYSTEM

CN1-12

CN3-7

X4-7

 

SENSOR

 

CN1-11

 

 

(AUX) DHW

 

S4

CN3-9

X4-9

 

CN1-10

 

 

TANK

 

 

CN3-6

X4-6

SENSOR

S5

CN1-9

 

 

 

 

 

 

OUTDOOR

CN1-8

CN3-5

X4-5

 

SENSOR

 

CN1-7

 

 

SHIELD

 

 

 

 

CN1-6

CN3-2

X4-2

 

A

 

RS485

 

CN1-5

CN3-1

X4-1

B

 

 

 

CN1-4

CN3-3

X4-3

SHIELD

 

 

CN1-3

CN3-10

X4-10

EXTERNAL +

 

0-10V

CN1-2

CN3-4

X4-4

CONTROL

-

 

CN1-1

 

 

 

 

 

 

 

2 X5-13

4 X5-6

5 X5-12

TR1

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.

LADDER DIAGRAM

LBL2356 REV C

73

Image 73
Contents Save this manual for future reference Models 399Contents Please read before proceeding When servicing boilerKnight XL How it works Model Air pressure switch Pump relay boardModels 600 Knight XL Boiler =B=R Rating RatingsCloset and alcove installations Installation must comply withDetermine boiler location Before locating the boiler, checkTOP For closet installations, Cpvc orProvide air openings to room Residential garage installationVent and air piping Flooring and foundationProducts to avoid When using an existing vent system to install a new boilerAreas likely to have contaminants When removing a boiler from existing common vent system Remove boiler from wood pallet Prepare boilerModel Gas conversionsModels 600 Leveling the boilerGeneral venting Direct venting options Vertical Vent Requirements for installation in Canada Install vent and combustion air pipingInstalling vent or air piping General ventingApproved Stainless Steel Vent Manufacturers PVC/CPVC air intake/vent connectionsMake Stainless steel vent Air inlet pipe materialsStainless steel air intake/vent connections FasNSeal Saf-T VentRemoving from existing vent Optional room airAir contamination Model Description Kit NumberSidewall direct venting If using the alternate sidewall terminationVent/air termination sidewall Determine location3AClearance to Gravity Air Inlets Bird Screen Typical Prepare wall penetrationsMultiple vent/air terminations Prepare wall penetrations Alternate Field Supplied OptionTermination and fittings Description and usage Sidewall termination installation9Concentric Vent Dimensional Drawing Models 399 Multiventing sidewall terminations 11Concentric Vent Sidewall AttachmentVent/air termination vertical Vertical direct venting2Vertical Terminations with Multiple Boilers Prepare roof penetrations4Concentric Vertical Termination Vertical termination installationMm see -9, Multiventing vertical terminationsHydronic piping Hydronic piping Near boiler piping connections Flow switch adjustmentCirculator sizing Pressure Head Feet20F 25F 30F 35F 399 500 600 700 800Near boiler piping components 7Single Boiler Primary/Secondary Piping Number of Units Model Manifold Pipe Sizes in Inches mm Gas connections Connecting gas supply pipingPropane Gas Natural gasCheck inlet gas supply Nominal Natural Gas Pipe Capacity ChartIron Pipe Length of Pipe in Straight FeetGas Pressure Gas valve replacementInstallation must comply with Field wiringLine voltage connections Auxiliary device proving switch Outdoor temperature sensorHigh gas pressure switch Low gas pressure switchWiring of the cascade Alarm contactsSystem supply sensor Boiler management system3Low Voltage Field Wiring Connections Condensate drain Condensate disposalStart-up Freeze protection when usedCheck/control water chemistry Fill and test water systemCheck thermostat circuits Check for gas leaksInspect/fill condensate system Inspect/check condensate lines and fittingsStart the boiler Final checks before starting the boilerIf boiler does not start correctly Check system and boilerFor Your Safety Read Before Operating Natural Gas Propane Set space heating operationSet domestic hot water DHW operation Configuration of the cascadeGeneral Operating informationProtection features Outdoor reset operation, if used Boiler temperature regulationCascade Sequence of the cascade DHW, Night Setback, and Ramp Delay operation with CascadeBLR Ignition Sequence of operationShutdown Knight XL control moduleInstaller Access modesUser To save parameters and exit programmingStandby ServiceSet Point Met PrepurgeControl will display the actual fan motor RPM SYS ***.*F10V in **.Vdc DelayOperation of the cascade Service technician Maintenance Maintenance and annual startupOwner maintenance Address reported problems MaintenanceClean condensate trap Check all piping for leaks Inspect boiler areaCheck water system Flue vent system and air pipingCheck expansion tank Check boiler relief valveCheck all boiler wiring Check ignition ground wiringCheck control settings Inspect ignition and flame sense electrodesCleaning boiler heat exchanger Check flame signalReview with owner Model Kit Part Component Number DescriptionHigh Voltage Diagrams2Ladder Diagram Page Page KBX-I-O Rev H
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399 specifications

Lochinvar 999 - 750, CF-CH(E)-i&s-08,399 is a cutting-edge boiler designed for commercial heating applications. With its robust construction and high efficiency, this model stands out in the crowded market of heating solutions.

One of the main features of the Lochinvar 999 - 750 is its exceptional thermal efficiency rating. The unit incorporates advanced condensing technology that allows it to recover heat from flue gases, which helps in achieving efficiency levels of up to 99%. This efficiency not only reduces energy consumption but also lowers operational costs, making it an excellent investment for businesses looking to minimize their carbon footprint.

The boiler is designed to provide a powerful output of 750 kW, ensuring it meets the heating demands of larger buildings or commercial spaces. Its capacity makes it suitable for a range of applications including schools, hospitals, and industrial facilities. Moreover, the unit features a built-in cascading system that enables multiple boilers to be connected, enhancing system reliability and flexibility.

In terms of technology, the Lochinvar 999 - 750 is equipped with a user-friendly touchscreen interface. This innovative control system allows operators to monitor and adjust settings with ease, providing real-time performance data and alerts for maintenance needs. The intelligent controls optimize operation to match the heating load, further enhancing energy efficiency.

Safety is a top priority with this model. It is built with multiple safety features such as automatic shut-off valves, pressure relief valves, and flame monitoring systems, ensuring safe operation under various conditions. The unit also adheres to stringent industry standards and regulations, making it a reliable choice for commercial applications.

Furthermore, the Lochinvar 999 - 750 is designed with serviceability in mind. Its compact footprint and accessible components simplify maintenance, reducing downtime and associated costs. The unit also supports a variety of fuel sources, including natural gas, propane, and biodiesel, providing flexibility to meet different facility requirements.

In summary, the Lochinvar 999 - 750, CF-CH(E)-i&s-08,399 represents a blend of efficiency, reliability, and safety in commercial heating. Its advanced technologies and thoughtful design make it a powerful solution for various heating needs, making it an ideal choice for businesses aiming for excellence in energy management and operational efficiency.