Lochinvar WH 55-399 operation manual Diagrams, PC Interface

Page 78

Installation & Operation Manual

13 Diagrams

Figure 13-1Ladder Diagram

120VAC		JUNCTION BOX					NEUTRAL GROUND
TERMINAL STRIP							TERMINAL STRIP
120V SUPPLY "L"							120V SUPPLY "N"
						1	2
ON / OFF	INTEGRATED CONTROL					GND	BLOWER
SWITCH				SYSTEM		SYSTEM
X1-6	F2		X1-1	SYSTEM		SYSTEM	3
			X1-2	PUMP "L"		PUMP "N"
	3.15A
	F1				SYSTEM	GND
				BOILER	PUMP	BOILER
	5A	SYSTEM PUMP		BOILER		BOILER
	5A	SYSTEM PUMP	X1-4	PUMP "L"		PUMP "N"
		RELAY	X1-4
		RELAY
		BOILER PUMP			BOILER	GND
		RELAY			PUMP
				DHW		DHW
		DHW PUMP	X1-3	PUMP "L"		PUMP "N"
		DHW PUMP
	F3	RELAY
				TERMINAL		TERMINAL
	.8A	24V DC		STRIP	DHW	STRIP
X5-9		SUPPLY	X5-1		PUMP
		SUPPLY

	120 VAC
X4-3	24 VAC
	24 VAC

CN5-5

CN7-3

CN7-1

19

17

15

15

13

13

10

PC INTERFACE

	CONNECTION BOARD
					INTEGRATED
					CONTROL
LWCO			FLOW	CN5-14 X4-8
			FLOW	CN5-14 X4-8
	CN7-4	11	SWITCH	12
				CN5-10	X4-12
24 VAC
	CN7-2
HEAT/LOOPDEMAND 1				CN5-7	X4-1
				CN5-7	X4-1
	20
HEAT/LOOPDEMAND 2				CN5-13	X4-9
				CN5-13	X4-9
	18
HEAT/LOOPDEMAND 3				CN5-6	X4-2
	16
TANK
THERMOSTAT				CN5-12	X4-10
	14
LOW GAS	HIGH GAS
PRESSURE	PRESSURE
SWITCH	SWITCH			CN5-11	X4-11
				CN5-11	X4-11
	9
	INTEGRATED			CN5-3	X4-5
	INTEGRATED
	CONTROL		LOUVER	5
			RELAY COIL	5
			RELAY COIL
			24VAC	6
			LOUVER	7
			PROVING SWITCH	7
			PROVING SWITCH	CN5-4	X4-4
	X7			CN5-4	X4-4
	X7
RIBBON CABLE
				X5-2
S2	X5-6			X5-10
S2	X5-6

ALARM	BELL	1
SILENCING	SWITCH	2
SILENCING	SWITCH	6

13

ALARM

CONTACTS

RUN-TIME

CONTACTS

INLET

SENSOR

OPERATING

SENSOR

HIGH LIMIT

SENSOR

FLUE

SENSOR

FLUE

SENSOR

CONNECTION

BOARD

1

2

3

4

S1a	X5-4	AIR PRESSURE	X5-11
		SWITCH
S1b	X5-12
S1b			X2-2
			X2-2
S3a	X5-5	GAS VALVE
	X5-5			GAS VALVE


	X5-13		X2-1	RELAY
S3b	X5-13
S3b
	X5-14	BLOWER
		BLOWER	1	X5-7
			2	X5-16
CN5-1	X4-7
CN5-8	X4-14		4	X5-8
CN5-2	X4-6		5	X5-15
CN5-2	X4-6
CN5-9	X4-13		TR2
			TR2

SYSTEM

S6

21

CN6	X6
	X1-7

SENSOR

OUTDOOR S5 SENSOR

TANK S4 SENSOR

SHIELD

A

CASCADE

B

SHIELD

BMS +

22

23
24
26
27
29
30
31
32
33

CN6	X6
CN6	X6	FLAME ROD
		SPARK
CN6	X6	ROD
CN6	X6
CN6	X6	CAUTION HIGH VOLTAGE SPARK LEAD
CN6	X6
CN6	X6	NOTES:
		NOTES:
CN6	X6	1. Where possible, switches are shown without utilities (gas, water or

CN6	X6	electricity) connected to the unit. As such, actual switch states may

IN -

0-10V

34

CN6				X6	vary from those shown on diagrams depending upon whether utilities
CN6				X6	are connected or a fault condition is present.

SYS PUMP +

35

2. See wiring diagram for additional notes.

IN -

0-10V

36

CN6	X6
CN6	X6

BLR PUMP + 0-10VOUT -

RATE + 0-10V OUT -

SHIELD

A

MODBUS

B

SHIELD

37

38

39

40

41

42

43

44

	CN6	X6		BOX DEPICTS
	CN6	X6		OPTIONAL ITEMS
		M		LOW VOLTAGE
		M		120 VAC
CN8-1	X6-1	O X4-1	X9-2	120 VAC
		D		HIGH VOLTAGE
CN8-2	X6-2	B X4-2	X9-1	HIGH VOLTAGE
CN8-3	X6-3 U X4-3		X9-3	LADDER DIAGRAM
		S		LADDER DIAGRAM
		S		LBL20170 REV D
				LBL20170 REV D

78

Image 78

Contents Models WH 55 Contents Boiler operation When servicing boilerPlease read before proceeding Boiler waterKnight Wall Mount Boiler How it works Stainless steel heat exchangerModels 55 Ratings Knight Wall Mount Boiler Ahri RatingDetermine boiler location Installation must comply withCloset and alcove installations Before locating the boiler, check1Closet Installation Minimum Required Clearances Wall mounting location PrecautionsVent and air piping Prevent combustion air contaminationWhen using an existing vent system to install a new boiler Products to avoidAreas likely to have contaminants When removing a boiler from existing common vent system Prepare boiler Remove boiler from wood palletGas conversions Mounting to a concrete wall Mounting the boilerMounting to a wood studded wall Mounting to a metal studded wallGeneral venting Direct venting options Sidewall VentInstall vent and combustion air piping Air intake/vent connectionsModel Kit Number Equivalent Vent Length Requirements for installation in CanadaSizing Model Max Vent AirMaterials Air inlet pipe materialsOptional room air Air contaminationVent pipe Approved PVC/CPVC Vent Pipe and FittingsMaterial Standard Vent fittingsModel PolypropyleneCentrotherm InnoFlue SW Duravent Polypro Stainless steel vent Vent/air termination sidewall If using the alternate sidewall terminationSidewall direct venting Determine location2AClearance to Gravity Air Inlets Model Air Vent Centerline Width Prepare wall penetrationsPrepare wall penetrations Alternate Field Supplied Option Multiple vent/air terminationsSidewall termination installation Sidewall termination optional concentric ventDescription and usage 92 and 3 Concentric Vent Dimensional Drawing reference D on Sidewall termination optional concentric vent models12Concentric Vent Sidewall Attachment Multiventing sidewall terminationsVertical direct venting Vent/air termination verticalPrepare roof penetrations Vertical termination installation Vertical termination optional concentric ventMultiventing vertical terminations Minimum Combustion AIR TypicalConcentric Venting Arrangement Alternate vertical concentric ventingVent / Air Inlet Size Minimum Existing Vent / Chase Size Existing vent as a chaseLow water cutoff device Hydronic pipingSystem water piping methods General piping information Chilled water systemNear boiler piping components Near boiler piping connections Circulator sizing35F Temperature Rise Applications 20F Temperature Rise Applications25F Temperature Rise Applications Pump Size GrundfosSmart System / Multi-temperature loop control option Variable speed pump setupVariable speed pump option 3Single Boiler Primary / Secondary Piping Make UP Water Indirect Number of Units Boiler Member 8Single Boiler Multiple Temperature DHW Priority Model Required Pipe Sizes Boiler Make UP Boiler Connecting gas supply piping Gas connectionsNatural gas Propane GasNatural Gas Pipe Capacity Chart Check inlet gas supplyLength of Pipe in Straight Feet for 1/2 PSI Gas valve replacement Gas PressureField wiring Installation must comply with Low voltage connectionsLine voltage connections Flow switch Outdoor temperature sensorLouver proving switch ThermostatSystem supply sensor Alarm contactsWiring of the cascade Boiler management systemInstallation FieldwiringCondensate disposal Condensate drainCheck/control water chemistry Freeze protection when usedStart-up Fill and test water systemCheck thermostat circuits Clean/Inspect Trap AssemblyCheck for gas leaks Inspect/fill condensate system Inspect/check condensate lines and fittingsIf boiler does not start correctly Final checks before starting the boilerStart the boiler Check system and boiler2Operating Instructions Models 55 Operating Instructions Model Set space heating operation Natural Gas PropaneVerify DHW mode Configuration of the cascadeSet domestic hot water DHW operation Operating information GeneralProtection features Boiler temperature regulation Outdoor reset operation, if used CascadeSequence of operation Operation DisplayAccess modes InstallerUser Knight wall mount boiler control module 1Control PanelCall for Heat Information Dial Function Owner maintenance Maintenance Maintenance and annual startupService technician See the following pages for instructions General Maintenance Check control settings Check ignition ground wiringCheck all boiler wiring Flue vent system and air pipingPerform start-up and checks Check flame signalCleaning boiler heat exchanger Check burner flameDiagrams PC Interface2Wiring Diagram