Herrtronic
®
MD Series
Installation, Operation, & Maintenance Manual
2 www.herrmidifier-hvac.com
TABLE OF CONTENTS
SECTION I WARRANTY
Warranty ............................................................................................................................................... 3
SECTION II UNIT OPERATION
Herrtronic MD: Basic Operation ............................................................................................................4
Types of Control ....................................................................................................................................5
SECTION III INSTALLATION INSTRUCTIONS
Allowable Operating Conditions ............................................................................................................6
Mounting ...............................................................................................................................................6
Plumbing ............................................................................................................................................... 6
Supply Power ........................................................................................................................................7
Steam Distributor Pipes ........................................................................................................................8
Steam Distributoin for Ducted Systems ................................................................................................ 9
Controls ................................................................................................................................................10
Control Circuit Connections .................................................................................................................. 10
External Off Switch ...............................................................................................................................11
Remote Alarm Output ...........................................................................................................................12
Unit Networking ....................................................................................................................................12
SECTION IV OPERATION INSTRUCTIONS
Operating Instructions ...........................................................................................................................13
Programming ........................................................................................................................................14
Start-up with Check List ........................................................................................................................16
Diagnostics ...........................................................................................................................................19
System Fault Conditions .......................................................................................................................20
Maintenance .........................................................................................................................................20
SECTION V TROUBLESHOOTING GUIDE
General Maintenance Notes ................................................................................................................. 22
Operating The Humidier Without External Controls ............................................................................ 22
Unit Detected Faults: (Red “Service” Light On) ....................................................................................24
Non-Fault Indicated Problems ..............................................................................................................25
Troubleshooting Without Unit-Detected Faults .....................................................................................27
Output / Input of Terminal Strips and Terminal Block ............................................................................ 28
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