Honeywell S9381A1008 Boiler Control

This control is no longer made - you will be sent the factory direct replacement. Please provide the model and serial number of your heater so we can send you the correct replacement.
Honeywell S9381A1008 Boiler ControlINSTALLATIONAutomatic Ignition Control domestic and commercialboiler systems are used on a wide variety of equipment.Some of these applications may make heavy demands onthe controls, either because of frequent cycling, orbecause of moisture, corrosive chemicals, dust orexcessive heat in the environment. In these situations,special steps may be required to prevent nuisanceshutdowns and premature control failures. Theseapplications require Honeywell Engineering review;contact your Honeywell Sales Representative forassistance. NO LONGER AVAILABLE

APPLICATIONThese integrated boiler control modules provide ignitionsequence, flame monitoring and safety shutoff forintermittent pilot spark ignition, or direct spark ignitionheating systems. They also provide limit rated watertemperature control with one or two sensors and displayinterface capability for either “on-board” or remote userinterface applications.• S9381A—Direct Spark Ignition, “On board” Display.• Enabled with EnviraCOM™ communication capabilityto support remote monitoring and diagnostics.• Limit-rated Temperature Sensing Probe.• Ignitor sensor type— two rod (separate ignitor and sensor)— one rod (combined ignitor and sensor)

Electrical Ratings:Line Voltage: 120 Vac, 60 Hz.Transformer:Nominal 24 Vac (maximum 30 Vac, minimum 18 Vac).5.0 VA plus external loads (gas valve, vent damper, etc.)On/Off Circulator:Full Load: 7.4A at 120 Vac (0.75 to 0.8 power factor[PF]).Locked Rotor: 44.4A at 120 Vac (0.4 to 0.5 PF).Inducer (Optional):Full Load: 6A at 120 Vac (0.75 to 0.8 PF).Locked Rotor: 17.48A at 120 Vac (0.4 to 0.5 PF).Vent Damper (Optional):Full Load: 0.5A at 24 Vac.In Rush: 1A at 24 Vac.Main Valve:Full Load: 2A at 24 Vac (0.5 to 0.6 PF).In Rush: 6A at 24 Vac (0.5 to 0.6 PF)Pilot Valve (Optional):Full Load: 2A at 24 Vac (0.5 to 0.6 PF)In Rush: 6A at 24 Vac (0.5 to 0.6 PF).Ambient Ratings:Humidity: 0 to 95 percent relative humidity,noncondensing.Operating Ambient Temperature: -4°F to +150°F.Shipping Ambient Temperature: -40°F to +175°F.Flame Monitoring (May vary by model):Flame Establishing Period (FEP): Maximum 2 seconds.Flame Failure Response Time (FFRT):Maximum: 2 seconds @ 1 μA.Flame Stabilization Time: 4 seconds. Time from ignitingthe main burner and detecting loss of flame (theflame current is allowed to be under the flame lostthreshold for this time while waiting for burner tostabilize).Flame Lost Threshold: 0.23 μA.

S9381A INTEGRATED BOILER CONTROLLERS66-1203—01 10State Code DefinitionsFor induced draft - state codes from 1–17;For atmospheric - state codes from 1–21Table 5. State Code Definitions.State, State code, Specific Description, General Description:Idle 1 The boiler is in standby-no call for heat StandbyRun circulator Heat request present but boiler temp sufficiently high to runcirculator pump only (no ignition sequence)Wait for pressureswitch to open2 The inducer is off and the control waits for the pressure switch to open. This is checked atthe beginning of a heat cycle before turning on the inducer. If the pressure switch doesn'topen in 60 seconds, the control goes to state 11.Wait for pressureswitch to close3 The inducer is turned on. The control is waiting for the pressure switch to close at thebeginning of a cycle. If the pressure switch doesn't close within 60 seconds, the controlgoes to state 123secs safety relay test delay time when status 4 or 6 is interrupted pressure switch toopen. Then control goes to state 12Prepurge (includesPV shortdiagnostics)4 System is purging before ignition trial-safety relay diagnostics followed safety relayswitch-on during last 2 secs this stateSpark, Ignitionactivation6 System is sparking permanently 13 seconds whilst main valve relay is turned onProve Flame 7 System is proving flame signal, typically 2 secondsRunning 8 System is in running mode, flame signal must be present.Postpurge 9 System is purging at the end of a call for heatInter-purge (Retry/Recycle Delay)10 If the control loses flame signal during state 7 or 8, it will recyclethrough the 30 seconds purge time and last 2secs.part of prepurgetimeRe-Start delay dueto flame failureWait for pressureswitch to open -failed closed11 The inducer is still off, and the pressure switch has not opened at the beginning of theheat cycle. An alarm message is sent but the control is not in lockout.Wait for pressureSW to close - failedopen12 The inducer is still on, waiting time for pressure switch to close expired. An alarmmessage is sent but the control is not in lockout.Soft Lockout 13 System is shutdown and will re-start following an enforced delayHard Lockout - nonvolatile14 System is locked out. A manual reset is required to be able to light off againWait for Limit toClose15 There may be a call for heat from the thermostat, but the limit switch is open.flame out ofsequence - beforetrial16 Flame signal sensed before trial for ignition. Appropriate alarm issentFlame present outof sequenceflame out ofsequence - aftertrialFlame out of sequence during postpurge. Appropriate alarm is sentWait for flame loss Flame signal still present when not expected. Appropriate alarm issentLeakage Detection 17 HW self check, check of connected periphery, it is performed atstart up, in the beginning of the heat cycle and in the “Wait ForRecovery” stateSelf TestWait For Recovery There is an external error and the control is waiting to recover, nolockoutSelf Test