Instructions manual seems to imply that two 24 Vac (10VA) transformers are required if the HUM or ECA terminal is used to power the automatic digital control. HUM or ECA terminals are 120 volts. The Model 700 came with one transformer. Do I need to buy another one?
Humidifiers - Aprilaire - 700 Humidifier
Answers & Comments
Hi,
No, you do not need another one. Wire everything just as you see it in the wiring schematics and you will only need the transformer supplied with the unit.
Heatman101