The TrueIAQ® monitors and automatically adjusts operation of your whole-house humid- ifier, dehumidifier, ventilator, or bath fan. Get Honeywell DG115EZIAQ - TrueIAQ Digital IAQ Control PDF manuals and user specifications documents, promotional details, setup documents and more. We have 1 Honeywell DG115EZIAQ - TrueIAQ Digital IAQ Control manual available for free PDF download: Owner's Manual. Honeywell DG115EZIAQ - TrueIAQ Digital Optional Controls: 1- Vision Pro IAQ, 2 - True IAQ,. 3 - Dehumidistat H8908D, 4 - Prestige other than those stated in the operating manual instructions.All Honeywell Prestige,. VisionPRO IAQ, VisionPRO, and Focus Pro thermostats do this. OPTION 2: TrueIAQ Wiring. 1. Make sure that the thermostat used isolates Y About Honeywell VisionPRO® IAQ Installation Manual Honeywell VisionPRO® IAQ Installation Thermostat can be mounted on 2" x 4" J box or on drywall or DG115EZIAQ Installation Manual - Honeywell TrueIAQ Digital IAQ Control · DG115EZIAQ Installation Manual · Owners Guide.