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Laars SC6, Инструкция по установке и эксплуатации

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800.900.9276 • Fax 800.559.1583 

(Customer Service, Service Advisors)

20 Industrial Way, Rochester, NH 03867 

•

 603.335.6300 • Fax 603.335.3355

1869 Sismet Road, Mississauga, Ontario, Canada L4W 1W8 

•

 905.238.0100 

•

 Fax 905.366.0130

www.Laars.com

Litho in U.S.A. © Laars Heating Systems 0806  Document 4200

Содержание SC6

Страница 1: ...20 ma OUTDOOR SC Non Modulating Model SC6 SC6P and SC 12 Output panel to Sequence up to 12 individual stages with lead lag and manual override capabilities Installation and Operation Instructions FOR...

Страница 2: ...WITCH 8 OFF 10 SET POINT CONTROL WITH OSS SEQUENCING 11 OUTDOOR RESET WITH NORMAL SEQUENCING 12 OUTDOOR RESET WITH OSS SEQUENCING 13 SC 6 AND SC 12 OUTPUT WIRING 14 WIRING THE STAGE OUTPUTS 14 SC 6P O...

Страница 3: ...ON Output 5 OFF AUTO ON Output 6 OFF AUTO ON System LEAD OUTPUT ON 4 20 ma OUTDOOR SC Digital display reads sensor value constantly Install a relay for each output stage which will be active Use these...

Страница 4: ...oint control for temperature 8 Outdoor Reset Hydronic heating control with outdoor reset ON ON 1 System Pump SYSTEM relay is on based on outside temp Shutdown and DHW priority 1 Combustion Air Damper...

Страница 5: ...r the enclosure through a different opening from any Class 2 voltage wiring Connect the hot line to terminal marked LINE Connect the neutral line to the terminal marked NEUT The green ground screw mus...

Страница 6: ...tact the Calculated water DHW input is enabled by closing a dry contact the Calculated water DHW temperature or the Set Point will change to 200 F and the decimal point on the left most digit on the d...

Страница 7: ...active The System relay will remain energized even if all Output Stages are off If an outdoor sensor is not connected or registers a fault condition The System relay will be energized when any stage i...

Страница 8: ...rease the value DOWN button to decrease the value DOWN When the correct value is shown release the button and wait approximately 5 seconds If any changes were made the display will ash Set the Sequenc...

Страница 9: ...WN button to decrease the value DOWN When the correct value is shown release the button and wait approximately 5 seconds If any changes were made the display will ash Set the Sequencing Mode Default N...

Страница 10: ...e System Delay is adjustable from 0 to 30 minutes Default is 0 5 or 6 Times Purge Time The Purge Time should be set to the length of the unit s purge cycle The Purge Time will apply when any ON OFF un...

Страница 11: ...t With a known 4mA input the offset can be set to make the External Set Point 110 F The Program Offset is adjustable between 10 F to 10 F Default is 0 F 4 or more Times Throttling Range The throttling...

Страница 12: ...ill remain energized after the last Output has been turned off or the outdoor temperature rises above the Starter The System Delay is adjustable from 0 to 30 minutes 8 Times Purge Time The Purge Time...

Страница 13: ...egardless of outdoor temperature or the reset curve selected The Offset is adjustable from 40 F to 40 F Default is 0 F 6 Times System Delay The System Delay controls how long the System relay will rem...

Страница 14: ...lly Open N O relay contact The N O contacts are dry contacts only They do not source any voltage Each N O contact is capable of switching 6A resistive Total output of all stages including the SYSTEM m...

Страница 15: ...o the Hi control circuit 3 Stage Lo Mid Hi Units Each unit has one pump relay and three stage relays associated with it Check the chart for the Pump Lo Mid and Hi OUTPUT positions OUTPUT positions OUT...

Страница 16: ...nputs Pump 3 Pump 2 Pump 1 Pump 3 Pump 2 Pump 1 Connect to 120VAC see page 5 Plumbing Class 1 Wiring Class 2 Sensor Wiring The laars SC Sequencing control DOES NOT source power for boiler stages or pu...

Страница 17: ...e HiFire HiFire LoMid LoMid Output 7 Limit Limit Limit Limit Limit Limit Limit Limit Limit Limit Limit HiMid HiMid Output 8 Limit Limit Limit Limit Limit HiFire HiFire HiFire MidFire MidFire HiFire Hi...

Страница 18: ...not register a fault from the Outdoor sensor OPn Open or SHt short For heating when the Outdoor temperature drops below the Outdoor Cutoff temperature the SC will begin to Sequence stages for heat It...

Страница 19: ...heat It will continue to Sequence until the Outdoor temperature rises to 2 F above the Outdoor Cutoff temperature The Outdoor Cutoff temperature can be set from 40 to 100 F In addition an ON setting...

Страница 20: ...ature display ashing the new value NORMAL SEQUENCING SETTINGS REACTION TIME Rt Default 2 minutes The Reaction Time controls how Output Stages are Sequenced on and off based on PID type logic Shorter R...

Страница 21: ...Calculated water temperature to allow the Output Stage to run longer and therefore also be off longer before restarting The Last Stage Hold provides an adjustable temperature value which is added to...

Страница 22: ...Stage The Output with the green light on is currently the Lead Stage Only one Stage Output can be the Lead Stage at any given time The Lead Stage is always the rst stage brought on when there is a cal...

Страница 23: ...sition OFF position OFF OUTPUT LIGHTS The row of red lights marked OUTPUT ON indicate which outputs are energized If the red light next to a Stage Output is on then its output relay should be energize...

Страница 24: ...ust be continuous for any Stage Output to be active If the PROVE PROVE inputs are opened when Stage PROVE inputs are opened when Stage PROVE Outputs are active then they will immediately de energize a...

Страница 25: ...will close the DHW input terminals DHW input terminals DHW If the System Output is con gured for Combustion Air Damper operation the System relay output will be closed when any Stage Output is activa...

Страница 26: ...Temperature Display Outdoor Temperature Display shows SHt The SC sees a short across the input terminals Remove the wires from the OUTDOOR 11 and 12 and 12 and inputs The display should change to rea...

Страница 27: ...t being energized to determine why it is not operating Red stage light is lit but the unit is not on The SC is calling for this unit to be on Follow the procedure above Red stage light is not lit but...

Страница 28: ...rvice Service Advisors 20 Industrial Way Rochester NH 03867 603 335 6300 Fax 603 335 3355 1869 Sismet Road Mississauga Ontario Canada L4W 1W8 905 238 0100 Fax 905 366 0130 www Laars com Litho in U S A...

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