Lochinvar 065, 495, 000 - 2 service manual Main Unit GAS Valves Blower Pressure Switch

Page 49

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

10	13	1	4	7	10	13
11	14	2	5	8	11	14
12	15	3	6	9	12	15
						G

		CHASSIS GROUND		G		120VAC
	1	BK		BK	W	SUPPLY
E	1	BK			W	SUPPLY
E	2	W	SPLICE	W		W	120VA
	2	W	SPLICE				120VA
							C
				BK		BK	C
							PUMP
		Y	SPLICE	Y

SPLICE5

3

2

1

F

9	12	15		Y
8	11	14	R/O
7	10	13	R	SPLICE
				SPLICE

T

O

GY

GY

PV MV/PV MV

BURNER

G

GROUND

VALVE #1

HOT SURFACE IGNITER

HI-LOW FIRE

FULL FIRE

Y

PR

LOW AIR

COM

PV MV/PV MV

INDICATOR

AIR PRESSURE

VALVE #2

SWITCH

BLOWER
BR	GR
BR
W

GROUND

MAIN UNIT - GAS VALVES - BLOWER PRESSURE SWITCH

			Y	BL
				BL
9	8	6		24 VAC
SPLICE	SPLICE	SPLICE		24 VAC
SPLICE	SPLICE	SPLICE

BK

LOW VOLTAGE

XFMR.

1	4	7	10
2	5	8	11
3	6	9	12

NEL

	O							BK
	O			3	6	9	12
	Y			2	5	8	11
	BL			1	4	7	10	A
	R/O
	O					O	R	BK
	OA SENSOR
	CN7 OPERATOR							CN3
	CN8	CN1					2	INLET
		CN1					1	PROBE
		SENSOR						PROBE
		SENSOR
4		ON	ENABLE					CN4
4								CN4
3	SHUTDOWN		DISABLE				CN2	PR
3		O.A.SHUTDOWN
		O.A.SHUTDOWN						CN5
2								CN5
2
1								SYS/
1	O.A. MAX.		RATIO					TANK
	O.A. MAX.		RATIO					PR
	OPTIONAL I/O RESET							PR
	OPTIONAL I/O RESET							CN6
CN1
								CN9
	OFF						TO
		DIFFERENTIAL		HIGH-FIRE			CN9
	SETPOINT	DIFFERENTIAL		OFFSET
				OFFSET

OPERATOR

	W	3 4		C
				C
		2
		1		120VAC
	BR	1		POWER
	BR			POWER
				BK
	6	BK 1		1
	2	BK 1		1
	2	BK	2	W
		BK		2
	4			2
	4
				BK
	LOUVER/DAMPER
	120 VAC RELAY
	OPTION BOX "A"			TO LOUVER OR
	OPTION BOX "A"			DAMPER
	3	4		C
	3	4

W2 5

1 6 9

SILENCE ALARM BELL

G

BL BR

BR W

Y

TEST NORMALLY

CLOSED

TT

		O/W
		NC
NO	NO
C	C	C
		O
PR		PR
		PR

Y

`

SILENCE ALARM BELL

								LWCO	~~~~ ~~~~
		BR/W				BR		PROBE	~~~~ ~~~~
								PROBE
							T
				BR			T
				BR
	1		3				W
	1		3	3		1		CONTACTS
BR			6				R		FOR
G	4	5		6	5	4	R	ALARM
G	4	5		6	5	4			O BL
BR									O BL
BR
O	7	8	9	9	8	7	O
PR				PR			P		"R1"
				PR					120VAC

RESETBL

							TEST
PR
PR
	O.C.						T
J1	O.C.		CONTROL
J1		VAC24	CONTROL			J3	Y
						J3	Y
					6	3
				O	5	2
					4	1	BR/W
		J2
1	2	3		J4	P
P			GND		P

O

G

SPLICE

BR/W

BR

G

BR

O

				~~~~
				~~~~
				LWCO	PROBE	CONTACTS
	BR/W					FOR
	BR/W				T	LWCO ALARM
T					T
T
1		3	3		1	R R
4	5	6	6	5	4
7	8			8	7	O

		LOUVER/DAMPER
T		120 VAC RELAY
		6	W


		2	BK
		2	BK
			BK
		4
		BR
			SPLICE

P

POWER

LWCO

P

P

Y

"C"

ALARM

BR/W

CONTACTS

120VAC

P

LOUVER/DAMPER

24 VAC

BR/W

120 VAC RELAY

LWCO INDICATOR

POWER

RELAY

1	1		6	G	6
1	1	BK	6		6	BK	1	1	BK
		W		2	2	BK	1	1	BK
2	2	W							W
		BK				BK	2	2
										"R1"
									BK
			4	G	4				BK
			4	G	4
				BR		BR				O
		TO LOUVER OR				BR			TO LOUVER OR	BL
		TO LOUVER OR	OPTION BOX "B"						TO LOUVER OR	BL
		DAMPER	OPTION BOX "B"						DAMPER

WIRING CONNECTIONS DIAGRAM LBL20007 REV A

49

Image 49

Contents Save this manual for future reference Domestic Water HeatersHydronic Heating Boilers and Domestic Water Heaters General Product Information Safety InformationHydronic Heating Boilers and Domestic Water Heaters Front and Rear View Product IdentificationClearances from Combustible Construction InstallationBase for Combustible Floors Hydronic System Antifreeze Outdoor Boiler InstallationShut-Down and Draining Pump OperationFreeze Protection for a Heating Boiler System if required Installing Combustion Air FilterCombustion Air Filter One Opening Combustion Air OptionsGeneral Information Installation VentingExhaust Fans Venting SupportTABLE-A Table B Vent System OptionsFlue Pipe Sizes TABLE-CNegative Draft Conventional Negative Draft VentingFlue Outlet Piping Common Venting SystemsMasonry Chimney Installations Outdoor Installation VentingOutdoor Vent Kits Table DOutdoor Vent/Air Inlet Location Outdoor Vent KitGas Piping Gas Pressure TestInput Max Min Gas Train and Controls Connecting Gas Piping to UnitChecking Gas Supply Pressure Combination Gas ValvesVenting of Combination Gas Valves Measuring Gas Supply Pressure at Combination Gas Valve Gas Manifold Pressure AdjustmentRegulator Pressure Less Front Chamber Pressure NET Manifold PressureLow Water Cutoff Water Flow SwitchRelief Valve If EquippedTable J Terminal Strip Connection OptionsNominal AMP Draw Data General Plumbing Rules Water Connections Heating Boilers OnlyPrimary/Secondary Boiler Piping Radiant Floor and Snow Melt Heating Systems Low Temperature Return Water SystemsInput LTV Valve Kit Btu/hr System Temperature Rise Chart Based on Btu/hr Input Installation with a Chilled Water SystemTable L 10ºF 20ºF 30ºF 40ºF 50ºF 60ºFBoiler Flow Rate Temperature/Pressure GaugeBoiler Bypass Requirements Filling the SystemLighting Instructions OperationTo Turn Off Gas To Appliance Locating Temperature ControlTable M Temperature Control SettingsSet Point Maximum Set Point DeterminationHigh-Fire Offset Outdoor Air Reset OptionShutdown Outdoor Air Max O.A. MaxPlacement of Sensors Temperature Control SensorsBoiler Application Water Heater ApplicationWire Maximum Gauge Remote Wire ConnectionHot Surface Igniter and Ignition Control Module Table NHot Surface Ignition Control Module Diagnostic Status IndicationIgnition and Control Timings Ignition Module Lockout FunctionsTable O Status LED Diagnostic CodesTable P Temperature Rise Chart Required Temperature RiseDomestic Water Heaters Water Velocity ControlWater Chemistry Pipe Sizing ChartCirculating Pump Table RDomestic Water Temperatures Potable Hot Water Temperature Control SettingsDomestic Water Minimum Pump PerformanceLocation of Cold Water Supply Piping Connections High Water Temperature Limit ControlOptional Relief Valve Thermal ExpansionFlue Gas Passageways Cleaning Procedures Cleaning MaintenanceElectrical Heat Exchanger CleaningCombustion and Ventilation Air Set Up Procedure Cleaning and MaintenanceAdjustment Procedure 495,000 1,255,000 Btu/hr Models Servicing Hot Surface Igniter and Ignition Module Ignition System Checkout Sequence of OperationON/OFF Rocker Switch Power SupplyManual Reset High-Limit Thermostat Safety Device TerminalsIgnition Module Electronic Temperature ControllerHeat Transfer Process Gas Valves, Burner BTU/HR Schematic DiagramHI-LIMITS PWR SW Main Unit GAS Valves Blower Pressure Switch 15AMPS Wiring DiagramControl 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.