Lochinvar Harmony Wiring The System Output, Wiring The Stage Outputs, Wiring the SYS Output

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WIRING THE SYSTEM OUTPUT

System Output Operation in Set Point ModeINSTALLATION OUTPUT WIRINGSystem Output Operation in Reset Mode

1 2 3 4 5 6 7 8 9 10

LINE

NEUTRAL

SYS

A

B

C

 

 

N.O. contacts to activate a pump, valve or other system component

WIRING THE SYSTEM OUTPUT

System Output Operation in Set Point Mode

•The SYS output relay will energize whenever there is a call for output and the Shutdown feature is not active.

•Until the SYSTEM PROVE input is shorted, no Stages will be activated. If a Prove is not required, the factory installed jumper should remain.

•The SYS will remain energized while any Stage is active.

•When the last Stage relay turns off, the SYS output can remain energized for the period of time set by the System Run-On (see pg. 19)

•A typical use of the SYS output is to activate a system pump starter. The pump can run whenever there is a call for heat. When heat is no longer required, the pump will stay active for a few more minutes to remove the residual heat from the boilers.

System Output Operation in Reset Mode

•The SYS output relay will energize whenever the outdoor tempera- ture is below the Outdoor Cutoff.

•The SYS will remain constantly energized while the outdoor tempera- ture is below the Outdoor Cutoff.

•When the outdoor temperature rises 2°F above the Outdoor Cutoff, the SYS output will remain energized for the period of time set by the System Run-On (see pg. 19).

Wiring the SYS Output

•The SYS output has one Normally Open (N.O.) relay contact.

•The N.O. contacts are dry contacts only. They do not source any voltage.

•Class 1 voltages must enter the enclosure through a different opening from any Class 2 voltage wiring.

•Each N.O. contact is capable of switching 6A resistive at 120VAC.

•Total output SYS and the OPERATING LIMIT OUTPUTS must not exceed 15A.

WIRING THE STAGE OUTPUTS

Installing the Output Relays

•Each output stage (A through D) which is to be used must have a relay installed in the socket.

The SYS relay is included with the Harmony.

•To install a relay, orient the pins and then press it gently into the appropriate socket.

•Any stage output which does not have a relay must have its Mode set to Off (see Stage Settings pg. 22).

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Contents HARMONY TABLE OF CONTENTSLochinvar Harmony Function Chart HARMONYFULL MODULATION SEQUENCING CONTROLHarmony Overview INSTALLATION INPUT WIRINGINPUT WIRING WIRING THE POWERINSTALLATION INPUT WIRING WIRING THE SHUTDOWNWIRING THE SYSTEM PROVE EMS Sourcing CurrentWIRING THE BOILER ACTIVE INPUTS SignalDry Contact System ProveOUTPUT WIRING WIRING A SETBACKCONNECTING AN OUTDOOR SENSOR EMS INPUTWIRING THE SYSTEM OUTPUT WIRING THE STAGE OUTPUTSSystem Output Operation in Reset Mode Wiring the SYS OutputOUTPUT WIRING WIRING TO 4-20MA MODULATING MOTORSWIRING TO VOLTAGE MODULATING MOTORS INSTALLATIONUSING THE MENUS USING MENUSCHANGING SETTINGS MAKING SELECTIONSSYSTEM STARTUP STARTUP SEQUENCESELECTING THE SENSOR TYPE Default - FEMS INPUT Default - Setback SELECTING THE MODULATING MODE Default - NormalSELECTING THE OUTPUT TYPE Not available for Reset Sensor TypesSELECTING THE OPERATING MODE Default - Normal SYSTEM STARTUPPress to select Normal or turn to scroll down Press to select ProcessOPERATING SETTINGS RESET F AND RESET CSET POINT THE MAIN DISPLAYDefault = THROTTLEGAIN/THROTTLE PROCESS GAIN/THROTTLING RANGE TABLEUsed to manually change the lead stage LEAD STAGELEAD STAGE SYSTEM SETTINGS SETTINGSSYSTEM SETTINGS THE SYSTEM SETTINGS MENUPURGE DELAY Default - 1.0 min Default - 0 minLAG DELAY SYSTEM SETTINGSSTANDBY TIME Default - 10 min SYSTEM RUN-ONDefault - 0 minDefault SETBACKDefault 24hr DefaultROTATE TIME LAST STAGE HOLDPASSWORD Default DisabledSET TIME SYSTEM SETTINGSSTAGE SETTINGS INDIVIDUAL STAGE ADJUSTMENTS THE STAGE MENUDefault - OFF MODEIGNITION POINT Default - 1% MODULATION START Default - 75%STAGE SETTINGS Press to show setting Turn to adjust valueModulating Mode - PARALLEL COPY SETTINGS - STAGE A ONLYSTAGE SETTINGS RESET SETTINGS RESET RATIODefault OFFSET DefaultRESET Default 64FMINIMUM WATER TEMPERATURE Default 70F OUTDOOR CUTOFFTROUBLESHOOTING TROUBLESHOOTINGTEMPERATURE INPUTS STAGE OUTPUTSAPPENDIX SYSTEM STARTUP MENUEXTERNAL SET POINT 4-20MA EMS-CONTROLRANGE APPENDIXAPPENDIX MOVING AROUND THE STAGES MENUSMANUAL CONVENTIONS Index SymbolsINDEX INDEX 4-20mAExternal Input HARMONY SPECIFICATIONSLead Stage Rotation
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