34-00008—03 - S8910U3000 Universal Hot Surface Ignition

S8910U3000Table 4. DIP switch configuration.ONONONONONONONON1234Trial count 1 try1234Trial count 3 tries1234Trial for ignition period 4 seconds1234Trial for ignition period 7 seconds1234Igniter warm-up time 34 seconds1234Igniter warm-up time 45 seconds1234Igniter warm-up time 17 seconds(27 seconds 2nd and 3rd trial)1234Igniter warm-up time 7 seconds(12 seconds 2nd and 3rd trial)M35557REVIEW THE INSTALLATIONWater or Steam CleaningIf a module or gas control gets wet, replace it. If the applianceis likely to be cleaned with water or steam, cover the controlsand wiring to protect from water or steam flow. Mount thecontrols high enough above the bottom of the cabinet to avoidgetting wet during normal cleaning procedures. A NEMA 4enclosure is recommended for the ignition module.WARNINGFIRE OR EXPLOSION HAZARD.CAN CAUSE PROPERTY DAMAGE, SEVEREINJURY, OR DEATH.Follow these warnings exactly:1. Review the installation as outlined in this section.2. Plan for frequent maintenance as described in theMaintenance section.High Humidity or Dripping WaterDripping water can cause the module to fail. Never install anappliance where water can drip on the controls.In addition, high ambient humidity can cause the gas control tocorrode and fail.When hot surface ignition systems are used on central heatingequipment in barns, greenhouses, and commercial propertiesand on heating appliances such as commercial cookers,agricultural equipment, industrial heating equipment and poolheaters, heavy demands are made on the controls. Specialsteps may be required to prevent nuisance shut-downs andcontrol failure due to frequent cycling, and severeenvironmental conditions related to moisture, corrosivechemicals, dust or excessive heat. These applications requireHoneywell Home and Building Control Engineering review;contact your Honeywell Sales Representative for assistance.If the appliance is in a humid atmosphere, make sure aircirculation around the controls is adequate to preventcondensation. Also, regularly check out the system. A NEMA 4enclosure is recommended for the ignition module.Corrosive ChemicalsCorrosive chemicals can attack the module and gas control,eventually causing a failure. If chemicals are used for routinecleaning, avoid contact with the controls. Where chemicals aresuspended in air, as in some industrial or agriculturalapplications, A NEMA 4 enclosure is recommended for theignition module.Review the following conditions that can apply to your specificinstallation and take the precautionary steps suggested.Frequent CyclingDust or Grease AccumulationThese controls are designed for use on appliances thattypically cycle only three to four times an hour during theheating season. In year-around applications with greatercycling rates, the control can wear out more quickly. Perform amonthly checkout.Heavy accumulations of dust or grease can cause controls tomalfunction. Where dust or grease can be a problem, providecovers for the module and the gas control to limitcontamination. A NEMA 4 enclosure is recommended for theignition module.734-00008EFS—01

S8910U3000HeatCAUTIONExcessively high temperatures can damage controls. Makesure the maximum ambient temperature at the control does notexceed the rating of the control. If the appliance operates atvery high temperatures, use insulation, shielding, and aircirculation, as necessary, to protect the controls. Properinsulation or shielding should be provided by the appliancemanufacturer; verify proper air circulation is maintained whenthe appliance is installed.1. Disconnect the power supply before beginningwiring to prevent electrical shock or equipmentdamage.2. If a new gas control is to be installed, turn off thegas supply before starting the installation. Conducta Gas Leak Test according to the gas controlmanufacturer instructions after the gas control isinstalled.3. If a module must be mounted where it can beexposed to moisture or water, provide a suitablewaterproof enclosure.4. Using the wire labels provided, label all wiresbefore disconnecting. Wiring errors can causeimproper appliance operation and createdangerous conditions such as bypassing safetyfeatures.INSTALLATIONWhen Installing this Ignition System.1.2.3.4.Read these instructions carefully. Failure to follow themcould damage the components or cause a hazardouscondition.Check Tables 1, 2, and 3 to confirm that the S8910U is adirect replacement for the existing module.Installer must be a trained, experienced servicetechnician.After installation is complete, check out component andappliance operation as provided in these instructions.Perform Preinstallation Safety InspectionA preinstallation safety check of the appliance and ventingsystem must be done before the replacement module isinstalled. If a condition is detected that could result in unsafeoperation, shut off the appliance and advise the owner of theunsafe condition. Correct any potentially unsafe conditionbefore proceeding with the installation.WARNINGFIRE OR EXPLOSION HAZARD.CAN CAUSE PROPERTY DAMAGE, SEVEREINJURY, OR DEATH.1. If the ignition module gets wet, it can malfunction,leading to accumulation of explosive gas.— Never install where water can flood, drip orcondense on the module.— Never use a module that has been wet.Replace it.2. Liquefied petroleum (LP) gas is heavier than airand can not vent upward naturally.— Do not light pilot or operate electric switches,lights or appliances until you are sure theappliance area is free of gas.3. Do not attempt to disassemble or clean the module.Improper reassembly and cleaning can causeunreliable operation.34-00008EFS—01Remove Old ModuleDisconnect power supply before doing any work on the unit.Disconnect and tag the wires from the old module using thewire labels provided. Remove the old module from its mountinglocation.Mount New Ignition ModuleMount the S8910U Module in the same location as the oldmodule. Protect the module from exposure to water, moisture,corrosive chemicals and excessive dust and grease. Assurethat ambient temperature at the module is within the rangelisted in the Application section.Mount the module with the terminals down to protect fromdripping water and dust. The module can also be mounted withterminals on either side. Do not mount with the terminalspointing up. Refer to Fig. 1 for mounting recommendations.When it is necessary to drill new mounting holes, use theS8910U as a template to mark the mounting hole pattern. Drillnew holes as required. Fasten securely with four No. 6-32machine or No. 8 sheet metal screws.8

S8910U3000Wire the ModuleMOUNT IN ONE OF THESE POSITIONSCAUTION1. Check the wiring diagram furnished by theappliance manufacturer, if available, and comparewith Table 5. Carefully follow any specialinstructions affecting the general proceduresoutlined in this section.2. Disconnect the power supply before making wiringconnections to prevent electrical shock orequipment damage.TERMINALS FACING DOWNTERMINALS FACING LEFTIMPORTANT1. Be sure all wiring complies with applicable electricalcodes and ordinances.2. Hot surface igniter leadwires should not be allowed torest against grounded metal surfaces.3. A common ground is required for the S8910U and themain burner. The 24V (GND) terminal internallygrounds one side of the transformer. Any auxiliarycontrols or limits must not be in the grounded leg. Inaddition, the appliance should be earth-grounded.4. Make sure the transformer has adequate VA. Theignition module requires 0.4A at 24 Vac. Add the current draws of all other devices in the control circuit,including the pilot and main valves in the gas control,and multiply by 24 to determine the total VA requirement of these components. Add this total to 9.6 VA(for the ignition module). The result is the minimumtransformer VA rating. Use a Class II transformerwhen replacement is required.5. Check that L1 (hot) and L2 (neutral) are wired to theproper terminals.1. Connect the wires to the S8910U Ignition Module asshown in Table 5. Make sure that adequate systemground is provided as indicated in the wiring table. SeeFig. 2 through 4. Where a change in quick-connect isrequired, cut off the original quick-connect, strip the leadwire and firmly crimp in place the proper quick-connectsupplied.2. Verify the thermostat anticipator setting as explained inthe preceding IMPORTANT, item 4.TERMINALS FACING RIGHTDO NOT MOUNTWITH TERMINALS FACING UPM2647AFig. 1. Module mounting recommendations.WARNINGEXPLOSION HAZARD. CAN CAUSEINJURY OR EQUIPMENT DAMAGE.Only trained professional gas appliance servicetechnicians should install and check out the S8910U.Selectable DIP switches allow the ignition module to becustomized for the appropriate trial count, trial forignition period, and igniter warm-up time. Use only theappropriate DIP switch configuration as given in Table 4on page 7. Refer to Tables 1, 2, and 3 for appropriatenumber of ignition trials, warm-up, prepurge andbetween trial prepurge timings.Improper DIP switch configuration can result inappliance malfunction.934-00008EFS—01

S8910U3000Table 5. Replacement Wiring Terminals.Replacement ControlOriginal ControlS8910UTerminalHoneywellS89/S890 TerminalWhite Rodgers50E/F47 TerminalRobertshawHS780 TerminalGND (BURNER)GND (BURNER)aGNDTR (GND CLIP)b24V (GND)24V (GND)aTRGNDVALVE (GND)VALVE (GND)aMVa (next to TRterminal)—c24V24VaTHTHVALVEVALVEMVdVALVEdL2 120V NEUTRALeL2 120V NEUTRAL—L2L1 120V HOTL1 120V HOTLfL1Hot Surface Igniter ElementHSI 120V NEUTRALeHSI 120V—IGNHot Surface Igniter ElementHSI 120V HOTHSI 120VIGNgIGNSENSEhSENhFP iRShTerminal FunctionBurner Ground ConnectionTranformer Secondary(unswitched leg)Main Valve CommonTransformer Secondary(switched leg)Main Valve Operator120 Vac Neutral Leg Power Supply120 Vac Hot Leg Power SupplyFlame Sensora Removequick-connect and replace with the included 1/4 in. quick-connect.green adapter cable (provided) to connect S8910U GND (BURNER) terminal to chassis ground.c Do not use the S8910U VALVE (GND) terminal. VALVE (GND) and 24V (GND) are interconnected in the appliance wiring.d Remove quick-connect and replace with the included 3/16 in. quick-connect.e Do not use this terminal if model being replaced does not have 120V neutral power supply connection.f Use the black wire on the included adapter cable.g Use the orange wire on the included adapter cable.h On remote sense models, remove jumper quick-connect from S8910U sense terminal, cut jumper wire at circuit board anddiscard. On local sense models, leave black jumper connected.i Remove jumper from S8910U sense terminal, cut jumper wire at circuit board and discard.b Use34-00008EFS—0110

S8910U3000S8910U HOT SURFACE IGNITER CONTROLGolden Valley, MN 55422Assembled in Mexico4SENSEL1HSIHSI120 SENSE32304204-001 Rev. A120 VACNEUTRALFLAMESENSORL—HSIHSIControl StatusColor PatternDevice damaged- Red Steadyreplace control Ignition lockoutRed BlinkNormal operation Green Steady CUSAUTOWeak flame signal Green BlinkIGNITIONSee Instruction Sheet 34-00008SYSTEMSfor additional statesANSI Z21.20—L2L1SYSTEM SETUPLED StatesTrial count 1 try (default)Trial count 3 triesTrial for ign. period 4 seconds (default)Trial for ign. period 7 secondsL2MVNOTE: ALWAYS applythis control as instructedin Instruction Sheet34-00008VALVETHVALVESeeLEDStatesLED24VVALVEMV (NEXT TO TR)Selection TabInput Voltages 120 & 24 VAC, 60 HzONHSI 120V, 5A max.OFFValve 24V, 2A max.ONTotal 24V Load 0.4 valve loadOFFU.S. Patent 8,085,521ONPrepurge Time 32 Sec.Igniter Warm Up Time See Inst. Sh. 34-00008 OFFONIgnition Trial Time - See Selection TabOFFNumber of Trials - See Selection Tab1 2 3 4Between Trial Time - 96 Sec.(GND)TRVALVE (GND)(GND)GND24V (GND)(GND)GND(BURNER)WARNINGExplosion Hazard. Can causeserious injury or death.Disconnect power before servicing. This device can malfunction if it gets wet. Nevertry to use a device that hasbeen wet -- replace it.BURNER50E/F4724VS8910US8910U Hot Surface IgnitionTH-WTERMINAL CROSSREFERENCE43IGNFPBURNERGROUNDCOMBINATIONGAS CONTROL654ORANGEMVBLACKADAPTERMVPOWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOADPROTECTION AS REQUIRED. MAKE SURE L1 AND L2 ARE NOT REVERSED.2ALTERNATE LIMIT CONTROLLER LOCATION.3REMOVE JUMPER QUICK-CONNECT FROM S8910U. CUT WIRE AT CIRCUIT BOARD AND DISCARD.4USE ADAPTER PLUG WITH BLACK AND ORANGE WIRES (SUPPLIED).5CUT 3/16 IN. QUICK-CONNECT OFF WIRE AND REPLACE WITH 1/4 IN. QUICK-CONNECT (SUPPLIED).6CUT 3/16 IN. QUICK-CONNECT OFF WIRE AND REPLACE WITH 3/16 IN. QUICK-CONNECT (SUPPLIED).HOT SURFACEIGNITERLIMITCONTROLLERTHERMOSTAT ORCONTROLLER14L1(HOT)L221M8528EFig. 2. Typical hookup when S8910U replaces White-Rodgers 50E/F47.1134-00008EFS—01

S8910U3000S8910U HOT SURFACE IGNITER CONTROLTERMINAL CROSSREFERENCEIGNHSIIGNSENSERS120 SENSEL1HSI CUSAUTOIGNITIONSYSTEMSANSI Z21.2032304204-001 Rev. A120 VACNEUTRALL1L1SYSTEM SETUPControl StatusColor PatternDevice damaged- Red Steadyreplace controlIgnition lockoutRed BlinkNormal operation Green SteadyWeak flame signal Green BlinkSee Instruction Sheet 34-00008for additional statesHSIL2NOTE: ALWAYS applythis control as instructedin Instruction Sheet34-00008HSIL2SeeLEDStatesLED StatesTrial count 1 try (default)Trial count 3 triesTrial for ign. period 4 seconds (default)Trial for ign. period 7 secondsL2VALVESelection TabONOFFONOFFONOFFONOFF1 2 3 4VALVETHVALVELED24VInput Voltages 120 & 24 VAC, 60 HzHSI 120V, 5A max.Valve 24V, 2A max.Total 24V Load 0.4 valve loadU.S. Patent 8,085,521Prepurge Time 32 Sec.Igniter Warm Up Time See Inst. Sh. 34-00008Ignition Trial Time - See Selection TabNumber of Trials - See Selection TabBetween Trial Time - 96 Sec.TH-W—WARNINGExplosion Hazard. Can causeserious injury or death.Disconnect power before servicing. This device can malfunction if it gets wet. Nevertry to use a device that hasbeen wet -- replace it.VALVEVALVE (GND)S8910U Hot Surface Ignition(GND)GND(GND)24V (GND)Golden Valley, MN 55422Assembled in Mexico(GND)TR (GND CLIP)BURNERHS780GND(BURNER) GAS THERMOSTAT ORCONTROLLER121POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.MAKE SURE L1 AND L2 ARE NOT REVERSED.2ALTERNATE LIMIT CONTROLLER LOCATION.3SENSE ROD WILL BE PRESENT IF REMOTE SENSE HS780 MODEL. SEE TABLE 2.4WHEN HS780 IS A REMOTE SENSE MODEL, REMOVE JUMPER QUICK-CONNECT FROM S8910U. CUT WIRE AT CIRCUITBOARD AND DISCARD. CONNECT FLAME ROD LEAD WIRE TO SENSE. SEE TABLE 2.5CUT 1/4 IN. QUICK-CONNECT OFF WIRE AND REPLACE WITH 3/16 IN. QUICK-CONNECT (SUPPLIED).6USE GREEN GROUND ADAPTER (SUPPLIED) TO CONNECT S8910U GND (BURNER) TO APPLIANCE CHASSIS.Fig. 3. Typical hookup when S8910U replaces Robertshaw HS780.34-00008EFS—0112M8529E

S8910U3000S8910U HOT SURFACE IGNITER CONTROLTERMINAL CROSSREFERENCE CUSAUTOIGNITIONSYSTEMSANSI Z21.20SENSEL1L1L1SYSTEM SETUP120 HSIL2Control StatusColor PatternDevice damaged- Red Steadyreplace controlIgnition lockoutRed BlinkNormal operation Green SteadyWeak flame signal Green BlinkSee Instruction Sheet 34-00008for additional states32304204-001 Rev. A120 VACNEUTRALHSIVALVEL2NOTE: ALWAYS applythis control as instructedin Instruction Sheet34-00008LED StatesTrial count 1 try (default)Trial count 3 triesTrial for ign. period 4 seconds (default)Trial for ign. period 7 secondsL2VALVESeeLEDStatesSelection TabONOFFONOFFONOFFONOFF1 2 3 4VALVE24VLED24VInput Voltages 120 & 24 VAC, 60 HzHSI 120V, 5A max.Valve 24V, 2A max.Total 24V Load 0.4 valve loadU.S. Patent 8,085,521Prepurge Time 32 Sec.Igniter Warm Up Time See Inst. Sh. 34-00008Ignition Trial Time - See Selection TabNumber of Trials - See Selection TabBetween Trial Time - 96 Sec.TH-WVALVE (GND)VALVE24V (GND)VALVE (GND)WARNING(GND)24V (GND)S8910U Hot Surface IgnitionExplosion Hazard. Can causeserious injury or death.Disconnect power before servicing. This device can malfunction if it gets wet. Nevertry to use a device that hasbeen wet -- replace it.(GND)GND (BURNER)(GND)GND(BURNER)Golden Valley, MN 55422Assembled in IHSISENSESEN4BURNERGROUNDCOMBINATIONGAS L2THERMOSTAT ORCONTROLLER121POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.MAKE SURE L1 AND L2 ARE NOT REVERSED.2ALTERNATE LIMIT CONTROLLER LOCATION.3SENSE ROD WILL BE PRESENT IF REMOTE SENSE S89/S890 MODEL. SEE TABLE 3.4WHEN S89/S890 IS A REMOTE SENSE MODEL, REMOVE JUMPER QUICK-CONNECT FROM S8910U. CUT WIRE AT CIRCUITBOARD AND DISCARD. CONNECT FLAME ROD LEAD WIRE TO SENSE. SEE TABLE 3.5CUT QUICK-CONNECTS OFF WIRES AND REPLACE WITH 1/4 IN. QUICK-CONNECTS (PROVIDED).M8530EFig. 4. Typical hookup when S8910U replaces Honeywell S89/S890.STARTUP AND CHECKOUT2. Perform a gas leak test, as described in Steps 1and 6 in the Startup and Checkout section, for initialinstallation and any time work is done involving thegas piping.Check out the gas control system: At initial installation of the appliance. As part of regular maintenance procedures. At maintenance intervals determined by the application. As the first step in troubleshooting. Any time work is done on the system.Step 1: Perform visual inspection.a. With power off, make sure all wiring connections areclean and tight.b. Turn on the power to the appliance and the S8910U.c. Open the manual shutoff valves in the gas line to theappliance.d. Test for a gas leak upstream of the gas control if thepiping has been disturbed.Determine maintenance frequency individually for eachapplication; see Maintenance section.WARNINGFIRE OR EXPLOSION HAZARD.CAN CAUSE PROPERTY DAMAGE, SEVEREINJURY, OR DEATH.1. If you smell gas or suspect a gas leak, turn off gasat the manual service valve and evacuate thebuilding. Do not try to light any appliance; do nottouch any electrical switch or telephone in thebuilding until you are sure no spilled gas remains.GAS LEAK TEST: Paint gas control gasket edges and all pipeconnections upstream of the gas control with a rich soap andwater solution. Bubbles indicate gas leaks. Tighten the jointsand screws or replace the component to stop a gas leak.Recheck with soap and water solution.1334-00008EFS—01

S89

The S8910U Universal Hot Surface Ignition Module is designed to provide easy field replacement for a wide range of hot surface ignition modules manufactured by Honeywell, Robertshaw and White-Rodgers. The S8910U Module provides operating control of a direct ignition system using a 120 Vac hot surface igniter. The S8910U replaces existing