Are you sure the stat branch line builds pressure on a call for heat. Normally the opposite is true. The branch line exhausts to drive the VAV controller to close to minimum for reheat airflow(The VAV controller will have a seperate supply main).
To verify the stat:
Start at the stat-is supply...
Great advice, but the problem continues.....
The controller utilizes 10 watts internally and the remainder is for driven loads.The controller does immediately rectify to 24 vdc, also 5.12 vdc, sources both 0-10vdc and 0-20 ma dc analog outputs plus drives hot switched triacs. Additionaly any...
Sine Wave recommended by manufacturer. Probably because this is out of the realm of normal use of the controller. I am not a circuit designer but find it hard to beleive this is the first time a power supply of this type is required. Considering the amount of 24VAC devices used in the HVAC...
This device will power a portable digital controller so true sine wave will be preferred but modified sine could possibly be tolerated(never tested). Also I would like to keep THD as low as possible, less than 4 % would be acceptable(again not tested only manufacturer recommended). Because of...
Anyone have experience with any suppliers of either custom or off the shelf low votage inverters? We are in need of an inexpensive 12 vdc to 24 vac inverter in the 75 watt output range to be powerewd from a compact rechargeable 12vdc power pack.
Bob Smith
Operations/Engineering
Northeast...
