Manuals / Armstrong World Industries / Household Appliance / Humidifier

Armstrong World Industries EHU-700 Series, EHU-703, EHU-701, EHU-704 manual 1. EHU-700 Parts List

Models: EHU-701 EHU-700 Series EHU-704 EHU-703

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Figure 28-1. EHU-700 Parts List

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Figure 28-2. EHU-700 Steam Generator Repair Parts List

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Armstrong World Industries EHU-700 Series, EHU-703 1. EHU-700 Parts List, 2. EHU-700 Steam Generator Repair Parts List

Contents

Series EHU-700 Humidifiers Installation and MaintenancePlease Read And Save These Instructions HIGH VOLTAGES EXIST INSIDE THE HUMIDIFIER DANGER ELECTRICAL SHOCK HAZARDMETAL TOOLS AWAY FROM THESE AREAS TABLE OF CONTENTS SECTION 1 PREPARATION AND INSTALLATIONPRE-INSTALLATION INSTALLATIONPRE-INSTALLATION in locations where unusual instances of1 CHECK SHIPMENT CHECK LOCAL CODESTotal WaterModel unit INSTALLATION 5 ELECTRICAL SERVICE WIRING4 MOUNTING THE HUMIDIFIER IMPORTANT Please observe the following6 WATER FILL SUPPLY 7 CONNECT DRAINhumidifier Figure 8-1. Pipe size may CONTROL WIRING 9 CONTROL HUMIDISTATWall Mounted Control Humidistat 6 - 10 Ft11 AIRFLOW SWITCH NOTE LIMIT SWITCHES HIGH LIMIT AND AIRFLOW SWITCHES OPEN ON FAULTDuct Mounted Control Humidistat 10 HIGH LIMIT DUCT HUMIDISTAT12 AUDIBLE ALARM BoardMODE BUTTON, INDICATOR, and DISPLAY INSTRUMENT PANELFILL LIGHT DRAIN LIGHT TANK OFF LIGHTBEFORE TURNING ON THE POWER START-UP PROCEDURE FOR ARMSTRONG SERIES EHU-700 HUMIDIFIERSTURN ON POWER AT THE CIRCUIT BREAKER 9 Press the Drain switch. Verify that the unit is draining freely 7 Let the unit continue to fill and allow the water to boila The stat demand reading will decrease to zero b The unit will shut down, lighting the Tank Off light16 Turn power off, if humidification is not needed 17 Close and lock the doors, and store the key away from the unitFIER BECAUSE THIS SWITCH DISCONNECTS THE STEAM GENERATOR TANK ONLY TROUBLESHOOTING GUIDEPRINCIPLE OF OPERATION - AN OVERVIEW Tank Contactor Operation OPERATIONAL GUIDELINESMonitoring Stat Demand Monitoring % Power Monitoring CurrentAutomatic Drain Operation Manual Drain ModeEHU-700 DIAGNOSTICS DIAGNOSTIC DISPLAY MESSAGESC02 TANK NEEDS CLEANING C00 NORMAL OPERATION C01 HIGH WATERC04 HIGH LIMIT CIRCUIT C05 DRAIN SYSTEM FAILUREC06 FILL SYSTEM FAILURE C07 OVERCURRENT FAILUREC09 I/O DIAGNOSTICS How does this affect maintenance? WHEN WATER CONDUCTIVITY IS TOO LOW IndicatorsWATER QUALITY AND TREATMENT FOR EHU SERIES HUMIDIFIERS GENERALWHEN WATER CONDUCTIVITY IS TOO HIGH Indicators ResultsRemedy RemediesEHU-701, -703, -704 Series Electronic Steam Humidifier Repair Parts Steam Generators CompleteSteam Generator Parts DescriptionValves and Mechanical Parts DescriptionUsed On See Drawings on PageElectrical Parts Item Not ShownDescription Used OnFigure 28-1. EHU-700 Parts List Figure 28-2. EHU-700 Steam Generator Repair Parts ListMAINTENANCE RECOMMENDED MAINTENANCE SCHEDULESTEAM GENERATOR MAINTENANCE General Tank CleaningTANK REMOVAL AND REPLACEMENT - ALL MODELS STEAM GENERATOR CHEMICAL CLEANING PROCEDURE Page TANK DISASSEMBLY, CLEANING, AND ELECTRODE REPLACEMENT MODELS EHU-703 AND 704, SINGLE AND THREE PHASEFILL AND DRAIN SYSTEM REPAIR General MODEL EHU-701, SINGLE AND THREE PHASEDrain System Failure Fill System Failure AUTOCAL PROCEDURE SPECIFICATIONSHUMIDISTAT DATA SENSOR FAILURE PROTECTIONDIMENSIONS TABLE 5 SENSOR CHARACTERISTICSVoltage between black and white wire, terminals #6 and #7 SENSOR OUTPUTAIR SUPPLY HIGH LIMIT HUMIDITY SENSOR HUMIDITY SET POINT RESET BY OUTSIDE TEMPERATUREAPPLICATION EXAMPLE Humidistat model number H270-69-13-10-31Dimensional Information Limited Warranty and RemedyDimensions Description

23
40	47
29	47
29
		49
56
	48	54
16		53
25	46	62
30	46	62
30
31	55
31		50
32		50
32
18	52	57
18		57
19	51
33	61
15
		22
		20
	21	34
42	17

23
40	47
29	47
29
		49
56
	48	54
16		53
25	46	62
30	46	62
30
31	55
31		50
32		50
32
18	52	57
18		57
19	51
33	61
15
		22
		20
	21	34
42	17

23
40	47
29	47
29
		49
56
	48	54
16		53
25	46	62
30	46	62
30
31	55
31		50
32		50
32
18	52	57
18		57
19	51
33	61
15
		22
		20
	21	34
42	17