Lochinvar 495, 065, 000 - 2 service manual Hi-Limits Pwr Sw

Page 48

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

TERMINAL STRIP

- SENSOR

BK

D

E

F

1

1

4

7

10

13

1

4

7

10

H

1

2

8

11

5

8

11

5

2

O

D

BK

3

6

3

9

12

13

10

7

4

1

3

6

9

12

15

R

4

1

14

11

8

5

2

INLET

2 C 1

G

15

12

9

6

3

SENSOR

5

NOC

NC

6

3

Y

PINS 1 & 2

HI-LIMIT

JUMPERED

PROVIDED

10ICE SPL

1SPLICE

IF NO

ICE 3 SPL

R

OPTIONS

ARE

2 C 1

ORDERED

BK/W

GY

NOC NC

ICESPL

AUX

BK

C

GY

HI-LIMIT

CONNECTORBOX

W

W

OPTIONAL

POWER

BK/W

3

2

1

PR

O

JUMPERED IF

SWITCH

6

4

7SPLICE

2SPLICE

4SPLICE

NOT PROVIDED

R/O

GY

120 VAC

8

7

BK

GY

PR PR

BK

TRIAL

24 VAC

O

15

13

HEATING

Y

OPTION

12

11

10

24VAC FLAME

BL

9

8

7

FAILURE

PR

OPTIONAL

6

5

4

SYSTEM/

HI-LIMITS - PWR SW

G

9

TANK

3

1

1

4

7

10

13

ICE

SENSOR

H

R

BK

5

11

14

SPL

BL

Y

PR/W

3

6

12

B

3

6

12

24COM

GND

O

ACCS.

.

P

2

5

11

14

BOX.

PLUG

B

BL

TP

1

1

W

1

4

7

10

13

BR

O

P

2

2

BR

O

O

USEDNOT

R/O

O/W

BR

120VAC

SHUTOFF

O

R/O

O/W

Y

VALVE

.BOX .TP

RDADNSTA

W

DC

GAS TRAIN

GY

BK/W

O

O

W

BK

NORMALLY

STAGE 1

STAGE 2

LIMITS

SPLICE

F2

24V

BR

OPEN VENT

5

S1

120VAC

VALVE

F1

A

BK

4

R1 W1 R2 W2 A

X B

C

LINE

OPTIONAL

PUMP DELAY RELAY

SHUTOFF/ NORMALLY OPEN

3

NOT

"24VDC"COIL

VENT VALVE

W

2

NEU

USED

CONTROL PANE

COM

OPTIONAL HIGH-LOW GAS PRESSURE

GY/W

1

S2/FS

PR

LOW GAS

HIGH GAS

W

T

BL 24VAC

(HIGH

COM NO

NC

COM NO

NC

O

10

TH

O.C.

T

ON/OFF

P

9

PI

J1

(LOW FIRE)

FIRE)

J3

G

8

24COM

L

6

3

OPT. REMOTE

BL/W

CVA OR 24 TCON

O

5 4

2

7

RESET

BL

1

PR

PR

THERMOSTATS

BL

6

24VAC

T

NO

C

P

BR

O

R

5

MV

PR

J2

RESET

1

2

3

C

BL

NORMALLY

J4

T

4

PS

CLOSED

P

GND

IGNITION

GND

W = WHITE

T=TAN

3

BL

P

PR

2

Y

O

Y

Y

COM

LOUVER

NC NO COM

BK = BLACK Y=YELLOW

M/S

MODULE

3

4

7

G

PR/W

1

FF

NC

PR=PURPLE BR=BROWN

R

2

5

8

G

BL=BLUE

G=GREEN

NO

BL/W

P=PINK

GY=GRAY

FLAME FAIL RESET

1

6

9

T

BR/W

G

P

FLOW

T

O=ORANGE R=RED

O

BL

Y

SWITCH

BL

DELAY

T

TIME

DOTTED LINES INDICATE

OPTIONAL

Y

Y

NO C

OPTIONAL EQUIPMENT

Y

NO

C

IGNITION MODULE

SPLICE

UNLESS OTHERWISE

CONNECT TO:

O/W

INDICATED

R1 - W1 =

x

MATING

BR

CONTINUOUS PUMP

SPLICE

O

BR

SPLICE

BLOCKS

BR

X & B =

OPTION BOX "C"

INTERMITTENT PUMP

DISCONNECT POWER BEFORE SERVICING THE UNIT

WHEN REPLACING DAMAGED WIRING, USE EQUIVALENT TYPE AND GAUGE.

48

Image 48

Contents Domestic Water Heaters Save this manual for future referenceHydronic Heating Boilers and Domestic Water Heaters Safety Information General Product InformationHydronic Heating Boilers and Domestic Water Heaters Product Identification Front and Rear ViewInstallation Clearances from Combustible ConstructionBase for Combustible Floors Outdoor Boiler Installation Hydronic System AntifreezeShut-Down and Draining Pump OperationInstalling Combustion Air Filter Freeze Protection for a Heating Boiler System if requiredCombustion Air Filter Combustion Air Options One OpeningInstallation Venting General InformationExhaust Fans Venting SupportTABLE-A Vent System Options Table BFlue Pipe Sizes TABLE-CConventional Negative Draft Venting Negative DraftFlue Outlet Piping Common Venting SystemsOutdoor Installation Venting Masonry Chimney InstallationsTable D Outdoor Vent KitsOutdoor Vent/Air Inlet Location Outdoor Vent KitGas Pressure Test Gas PipingInput Max Min Connecting Gas Piping to Unit Gas Train and ControlsCombination Gas Valves Checking Gas Supply PressureVenting of Combination Gas Valves Gas Manifold Pressure Adjustment Measuring Gas Supply Pressure at Combination Gas ValveNET Manifold Pressure Regulator Pressure Less Front Chamber PressureWater Flow Switch Low Water CutoffRelief Valve If EquippedTerminal Strip Connection Options Table JNominal AMP Draw Data Water Connections Heating Boilers Only General Plumbing RulesPrimary/Secondary Boiler Piping Low Temperature Return Water Systems Radiant Floor and Snow Melt Heating SystemsInput LTV Valve Kit Btu/hr Installation with a Chilled Water System System Temperature Rise Chart Based on Btu/hr InputTable L 10ºF 20ºF 30ºF 40ºF 50ºF 60ºFTemperature/Pressure Gauge Boiler Flow RateBoiler Bypass Requirements Filling the SystemOperation Lighting InstructionsLocating Temperature Control To Turn Off Gas To ApplianceTemperature Control Settings Table MSet Point Maximum Set Point DeterminationOutdoor Air Reset Option High-Fire OffsetShutdown Outdoor Air Max O.A. MaxTemperature Control Sensors Placement of SensorsBoiler Application Water Heater ApplicationRemote Wire Connection Wire Maximum GaugeHot Surface Igniter and Ignition Control Module Table NDiagnostic Status Indication Hot Surface Ignition Control ModuleIgnition and Control Timings Ignition Module Lockout FunctionsStatus LED Diagnostic Codes Table OTable P Required Temperature Rise Temperature Rise ChartDomestic Water Heaters Water Velocity ControlPipe Sizing Chart Water ChemistryCirculating Pump Table RPotable Hot Water Temperature Control Settings Domestic Water TemperaturesDomestic Water Minimum Pump PerformanceHigh Water Temperature Limit Control Location of Cold Water Supply Piping ConnectionsOptional Relief Valve Thermal ExpansionCleaning Maintenance Flue Gas Passageways Cleaning ProceduresHeat Exchanger Cleaning ElectricalCombustion and Ventilation Air Cleaning and Maintenance Set Up ProcedureAdjustment Procedure 495,000 1,255,000 Btu/hr Models Servicing Hot Surface Igniter and Ignition Module Sequence of Operation Ignition System CheckoutPower Supply ON/OFF Rocker SwitchManual Reset High-Limit Thermostat Safety Device TerminalsElectronic Temperature Controller Ignition ModuleHeat Transfer Process Gas Valves, Burner Schematic Diagram BTU/HRHI-LIMITS PWR SW Main Unit GAS Valves Blower Pressure Switch Wiring Diagram 15AMPSControl BOX Connections Control BOX Connections

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.