Laars SC 12 - Install and Operating Manual Instrukcja Użytkownika

Laars Sequencing ControlsDocument 4200LINENEUTOUTPUT 8OUTPUT 9OUTPUT 7OUTPUT 10OUTPUT 11OUTPUT 12INCREMENTAUTOOFFLEAD STAGEROTATIONSELECTSETTINGUPDOWN

Page 10LAARS Heating SystemsADJUSTING THE CONTROL SETTING• After the power up routine is complete, the display will show the system water temperatur

Page 11Laars Sequencing ControlsSET POINT CONTROL WITH OSS SEQUENCINGDip Switch 8 - OFFPress SELECT ButtonDISPLAY Press and hold either the UP or DOWN

Page 12LAARS Heating SystemsOUTDOOR RESET WITH NORMAL SEQUENCINGDip Switch 6 and 7 - OFF and 8 - ONPress SELECT ButtonDISPLAY Press and hold either th

Page 13Laars Sequencing ControlsOUTDOOR RESET WITH OSS SEQUENCINGDip Switch 6 and 7 - OFF and 8 - ONPress SELECT ButtonDISPLAY Press and hold either t

Page 14LAARS Heating Systems♦ Additional output relays can be ordered separately (CA002300). Each active Stage Output must have a relay.WARNINGThis L

Page 15Laars Sequencing ControlsSC-6P OUTPUT WIRINGINSTALLING THE OUTPUT RELAYS ♦• Each OUTPUT which is to be used must have a relay installed in the

Page 16LAARS Heating SystemsBoiler 3 Boiler 2 Boiler 1Output 1Output 2Output 3OutdoorSensorSystemTemperatureSensorSystemPumpDHWDry Contact(optional)SC

Page 17Laars Sequencing ControlsOUTPUT RELAY CHARTS6 Stage Sequencer - SC 62 3 4 5 6 1 2 3 1 2 1On/Off On/Off On/Off On/Off On/OffLo/Hi Lo/Hi Lo/Hi 3

Page 18LAARS Heating SystemsOPERATIONSET POINT CONTROL SETTINGSSET POINT (SP) Default: 70°F• The Set Point is the temperature value th

Page 19Laars Sequencing ControlsOUTDOOR RESET SETTINGSCALCULATED (CAL)• This is the water temperature the SC will stage units to hold. It is based o

Page 2LAARS Heating SystemsContentsSC FUNCTION CHART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Page 20LAARS Heating SystemsOFFSET (OFS) Default: 0°F• The Offset value moves the starting point of the Reset Ratio curves (see charts on the

Page 21Laars Sequencing ControlsPURGE TIME (Pt) Default: 0 minutes• Many units must go through a purge cycle before they are brought on lin

Page 22LAARS Heating SystemsSYSTEM OUTPUT SETTINGSSYSTEM DELAY (Sd) Default: 0minutesSC-6 or SC-12• In Combustion Air Damper mode (Dip Swi

Page 23Laars Sequencing ControlsFIRST ON/FIRST OFF ROTATION• For this type of rotation, dip switch 5 must be in the ON position.ON position.ON• On p

Page 24LAARS Heating SystemsSHUTDOWN• This feature allows the user to shutdown all Stage Outputs on the SC from a remote location.• A typical use of

Page 25Laars Sequencing ControlsDHW CALL• When the DHW terminals are closed, the SC Set Point immediately changes to 200°F. This will happen regardle

Page 26LAARS Heating SystemsTROUBLESHOOTINGNo Display, or Display of 888 Check the 120VAC power input to the SC. Turn power to the SC off and back o

Page 27Laars Sequencing ControlsThere are more than one green lead stage lights on Check the 120VAC power input to the SC. Turn power to the SC off

800.900.9276 • Fax 800.559.1583 (Customer Service, Service Advisors)20 Industrial Way, Rochester, NH 03867 • 603.335.6300 • Fax 603.335.33551869 Sisme

Page 3Laars Sequencing ControlsSC FUNCTION CHARTLINENEUTOUTPUT 8OUTPUT 9OUTPUT 7OUTPUT 10OUTPUT 11OUTPUT 12INCREMENTAUTOOFFLEAD STAGEROTATIONSELECTSET

Page 4LAARS Heating SystemsDIP SWITCH CHART1 2 3 4 5 6 7 8ONSwitch 1System OutputSwitch 5RotationSwitches 6 and 7Input Type5First On/Last OffLead stag

Page 5Laars Sequencing ControlsINSTALLATIONMOUNTING THE SC• Select a location near the equipment to be controlled.• The surface should be fl at, and

Page 6LAARS Heating SystemsExternal Set Point - Terminals 4, 5, and 6• The SC can accept a 4-20mA signal from an Energy Management System (EMS) or ot

Page 7Laars Sequencing ControlsWIRING THE STAGE OUTPUTS• For SC-6 and SC-12 see pg. 14.• For SC-6P see pg. 15.WIRING THE SYSTEM OUTPUTCombustion Air

Page 8LAARS Heating SystemsPOWER UP SEQUENCES• Whenever the SC is powered up, it displays the software version number and then the operating paramete

Page 9Laars Sequencing Controls• The Minimum Water Temperature can be adjusted from 110°F to 180°F.• To change the minimum water temperature, hold d