OWNER'S MANUAL - Laundry Nation

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Direct-Spark Ignition OperationDIRECT SPARKIGNITIONOPERATIONNOTE:Some models are equipped with a dual ignition system.The dual ignition system contains two direct sparkignition modules in parallel. Each module has its ownflame sense circuit and acts independently of the other.If either bonnet limit thermostat opens because of highheat or flame impingement, the entire ignition systemwill shut down.1. When a call for heat is received from the control supplying24VAC to the ignition control module, the pre-purge delaytimer begins. This delay time allows any air/sediment to beejected prior to burner ignition. Following the pre-purge delayperiod, the gas valve is energized and the spark ignitor sparksfor the trial ignition period.2. When a flame is detected during the trial for ignition period, thespark ignitor shuts off and the gas valve remains energized.3. If no flame is detected by the flame sense circuit, the ignitioncontrol module will go into safety lockout. The valve will beturned off immediately. If the module has multiple retries andno flame is detected, the gas valve is de-energized and themodule goes into an interpurge delay. After this delay, themodule will attempt another trial for the ignition period. Thiswill continue until the number of retries has been used up. Atthe time, the module will go into safety lockout.4. Recovery from safety lockout requires one of the following:a. A manual reset by opening and closing the loading door.b. After one hour if the control thermostat is still calling forheat, the module will automatically reset and the trial forignition period will start over.5. Opening the loading door will cause the flame to extinguish.Closing the door and starting the dryer will restart the trial forignition period.6. Once the control thermostat has been satisfied and/or thedrying timer has been timed out, the ignition controlmodule(s) will be de-energized, the gas valve(s) will be deenergizedand the flames will extinguish.7. The machine will continue to run in a cooldown mode withoutheat. This process will cool the load to the touch and help toeliminate wrinkling.Page 42
DIRECT SPARKIGNITION OPERATIONFLOW CHARTPage 43
Page 1 and 2: Member of:OWNER'S MANUAL50 Lb. Laun
Page 3 and 4: WARNING: To avoid fire hazard, do n
Page 6 and 7: TABLE OF CONTENTS50 LB. LAUNDRY DRY
Page 8 and 9: SYMBOLSSymbol Descriptionrotation i
Page 10 and 11: Unpacking/General Installation (All
Page 12 and 13: 50 lb. Dryer Dimensions - Gas Energ
Page 14 and 15: Specifications - 50 lb. Laundry Dry
Page 16 and 17: Steam Heated SpecificationsGENERALS
Page 18 and 19: Electrical Connections - All Dryers
Page 20 and 21: Gas Piping Installation (Illustrati
Page 22 and 23: Gas Pipe Size ChartTOTAL BTU/HR(for
Page 24 and 25: Steam Piping Installation (Illustra
Page 26 and 27: Dryer Installation with Multiple Ex
Page 28 and 29: Dryer Installation With Separate Ex
Page 30 and 31: Rules for Safe Operation of DryerRU
Page 32 and 33: Operating Instructions—Coin Meter
Page 34 and 35: Setting Time On Computerized Coin M
Page 36 and 37: Double Timer Models (Illustration)D
Page 38 and 39: Troubleshooting ChartTROUBLE CAUSE
Page 40 and 41: Troubleshooting ChartDryer runs, bu
Page 44 and 45: General MaintenanceGENERALMAINTENAN
Page 46 and 47: Burner Air Inlet Shutter Adjustment
Page 48 and 49: Replacing Bearings and Collars Inst
Page 50 and 51: Basket Alignment—Single Motor Mod
Page 52 and 53: Air Switch Adjustment (with Illustr
Page 54 and 55: Parts—Duct Work and Air Switch As
Page 56 and 57: Dryers with Reversing Control Timer
Page 58 and 59: 50 lb. Laundry Dryer - Front Explod
Page 60 and 61: 50 lb. Laundry Dryer - Single Motor
Page 62 and 63: 50 lb. Laundry Dryer - Double Motor
Page 64 and 65: Bearings and Related Parts (with Il
Page 66 and 67: Access Door AssemblyRef. Nos. 1,2,4
Page 68 and 69: Reversing Control Box Assembly1 TU9
Page 70 and 71: Parts—Standard Gas BonnetGAS BONN
Page 72 and 73: Steam Heating Unit - Nine Section (
Page 74 and 75: 50 lb. Electric Bonnet “UR” Mod
Page 76: Page 76

OWNER'S MANUAL - Laundry Nation

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