Presentation on theme: "ST9120U1003 Universal Electronic Fan Timer Training Module"— Presentation transcript:
1 ST9120U1003 Universal Electronic Fan Timer Training Module A new addition to the Honeywell line of Universal controlsDesigned specifically for the service technicianInService situations
2 ST9120U - What You Will Learn: Product OverviewSet UpInstallationTroubleshootingProduct Cross ReferenceST9120 Advantage
3 What is the ST9120U Electronic Fan Timer? A universal electronic fan timer that integrates control of all combustion blower and circulating fan operations in a gas warm air applianceMonitors the thermostat for heat, cool and fan demands.Runs the induced draft blower motor and runs the circulating fan (up to two speeds) as needed.Monitors limit switch strings and energizes ignition control.Central wiring point for the electrical components of the furnace. Saves time!One part number:ST9120U1003
4 ST9120U Electronic Fan Timer Features Why choose the Honeywell ST9120U?Universal applicationReplaces over 25 existing Honeywell controlsEasy installationDIP switch selectable circulating fan delaysHeat on/off delayCool on/off delay (cool off fixed at 30 seconds)Single model services multiple furnace applicationsIncluded with the ST9120U:Wiring information and adapter for the ST9101Original appliance applicationDelay timing recommendationQuality construction for a long service life
5 Installation(If you are talking to technicians hand out copies of the installation instruction sheet as you go through the Installation, setup and troubleshooting sections of this presentation)
6 Installation of the ST9120U Location and MountingMount the ST9120U Electronic Fan Timer in the appliance wiring compartment or furnace vestibuleMounting screws providedWiringMake sure that all wiring complies with local codes and ordinances.Disconnect power before making wiring connections.
8 Set up of the ST9120U Setting DIP switches Heat fan-on delay On: 30/60 SecondsStarts timing when main valve energizedHeat fan-off delayOff: 60/100/140/180 SecondsStarts timing when main valve is de-energizedCool fan-on delayOn: 4/30 SecondsStarts with call for coolingCool fan-off delay fixed at 30 secondsPost Purge: 5 seconds
9 Set up of the ST9120URecommended dip switch settings are included in the installation instructions as well as the Honeywell Residential Combustion Application and Selection Guide.
11 Troubleshooting of the ST9120U Look for appropriate voltages at the ST9120U terminalsCheck operation and timing of:Combustion blowerFan at heating speedFan at cooling speedCheck limit operation and system responseNote: The ST9120U schematics show internal switching to clarify operation and assist in troubleshooting.
13 Product Cross Reference The ST9120U replaces over 25 existing Honeywell controls:ST9101A1006ST9120C1020ST9120C4016ST9120G2016ST9101A1014ST9120C2002ST9120C4040ST9120G2024ST9101A1022ST9120C2010ST9120C4057ST9120G2032ST9120A1006ST9120C2028ST9120C5005ST9120G4004ST9120A2004ST9120C3000ST9120C5013ST9120G4012ST9120B1005ST9120C3018ST9120D3009ST9120G4038ST9120C1012ST9120C4008ST9120G2008
14 Product Cross Reference Where do I find Honeywell universal fan timer cross reference information?Honeywell Application Selection and CrossReference Guide – FormHoneywell Laminated Truck Visor – FormHoneywell Residential Technical Support:
15 See Cross Reference Search box in right column.
16 ST9120U AdvantageWhen promoting the ST9120U keep these advantages in mind:The ST9120U universal control replaces over 25 existing Honeywell controls. This in turn, reduces inventory and saves time looking for the right part.A central wiring point for most of the electrical components of the furnace makes installation easy and gets the installer on to the next job faster.Easy to set selectable heat and cool on/off settings adapt to the application.The ST9120U makes the choice simple; one control saves time and money, improving your bottom line.
17 ST9120U1003 Universal Electronic Fan Timer Knowledge Test
18 ST9120U Knowledge TestNow that you completed this training module, take the short quiz to test your knowledge.
19 TestThe ST9120U Universal Electronic Fan Timer controls the blower and circulating fan in gas warm air appliances? T or FThe ST9120U is a central wiring point for most of the electrical components in the furnace? T or FThe ST9120U replaces over 25 Honeywell and competitor controls? T or FThe universal electronic fan timer monitors the thermostat for heat, cool and fan demands? T or FThe heat and cool on/off delays are set through dip switches? T or FHoneywell only has one resource for cross reference information? T or F