Lochinvar Harmony operation manual SELECTING THE OPERATING MODE Default - Normal, System Startup

Page 13

Press to

-- OPERATING MODE --

>NORMAL PROCESS

-- OPERATING MODE --

NORMAL

>PROCESS

-- OPERATING MODE --

NORMAL

>PROCESS

ADJUST

PRESS TO SELECT

ADJUST

PRESS TO SELECT

ADJUST

PRESS TO SELECT

Press to

select

Normal

or turn

to scroll

down

Press to

select

Process

SELECTING THE OPERATING MODE

Default - Normal

•Most heating applications do not experience rapid changes in system temperature. For these systems, it is best to adjust the modulation based on the rate of system rise or fall. This PID type of algorithm will help to prevent short cycling of the stages, reduce thermal stress on the system, and maintain an accurate system temperature. If your equipment is of this type, select Normal.

•Systems that run for process may experience large changes in load almost instantaneously. In Process mode, the Harmony will react immediately to load changes. Large load changes may cause stages to be short cycled, as the Harmony can enable and disable stages within seconds.

After making this selection, the main display screen will be displayed.

SYSTEM STARTUP

13

Image 13

Contents Lochinvar TABLE OF CONTENTSHARMONY HARMONY Harmony Function ChartFULL MODULATION SEQUENCING CONTROLHarmony Overview INPUT WIRING INSTALLATIONINPUT WIRING WIRING THE POWERWIRING THE SHUTDOWN INSTALLATION INPUT WIRINGWIRING THE SYSTEM PROVE EMS Sourcing CurrentSignal WIRING THE BOILER ACTIVE INPUTSDry Contact System ProveWIRING A SETBACK OUTPUT WIRINGCONNECTING AN OUTDOOR SENSOR EMS INPUTWIRING THE STAGE OUTPUTS WIRING THE SYSTEM OUTPUTSystem Output Operation in Reset Mode Wiring the SYS OutputWIRING TO 4-20MA MODULATING MOTORS OUTPUT WIRINGWIRING TO VOLTAGE MODULATING MOTORS INSTALLATIONUSING MENUS USING THE MENUSCHANGING SETTINGS MAKING SELECTIONSSTARTUP SEQUENCE SYSTEM STARTUPSELECTING THE SENSOR TYPE Default - FSELECTING THE MODULATING MODE Default - Normal EMS INPUT Default - SetbackSELECTING THE OUTPUT TYPE Not available for Reset Sensor TypesSYSTEM STARTUP SELECTING THE OPERATING MODE Default - NormalPress to select Normal or turn to scroll down Press to select ProcessRESET F AND RESET C OPERATING SETTINGSSET POINT THE MAIN DISPLAYTHROTTLE Default =GAIN/THROTTLE PROCESS GAIN/THROTTLING RANGE TABLELEAD STAGE LEAD STAGEUsed to manually change the lead stage SETTINGS SYSTEM SETTINGSSYSTEM SETTINGS THE SYSTEM SETTINGS MENUDefault - 0 min PURGE DELAY Default - 1.0 minLAG DELAY SYSTEM SETTINGSSYSTEM RUN-ONDefault - 0 min STANDBY TIME Default - 10 minDefault SETBACKDefault Default 24hrROTATE TIME LAST STAGE HOLDDefault Disabled PASSWORDSET TIME SYSTEM SETTINGSINDIVIDUAL STAGE ADJUSTMENTS THE STAGE MENU STAGE SETTINGSDefault - OFF MODEMODULATION START Default - 75% IGNITION POINT Default - 1%STAGE SETTINGS Press to show setting Turn to adjust valueSTAGE SETTINGS COPY SETTINGS - STAGE A ONLYModulating Mode - PARALLEL RESET RATIO RESET SETTINGSDefault OFFSET DefaultDefault 64F RESETMINIMUM WATER TEMPERATURE Default 70F OUTDOOR CUTOFFTROUBLESHOOTING TROUBLESHOOTINGTEMPERATURE INPUTS STAGE OUTPUTSSYSTEM STARTUP MENU APPENDIXEXTERNAL SET POINT 4-20MA EMS-CONTROLRANGE APPENDIXMANUAL CONVENTIONS MOVING AROUND THE STAGES MENUSAPPENDIX INDEX SymbolsIndex INDEX Lead Stage Rotation HARMONY SPECIFICATIONS4-20mAExternal Input