RE: RE: RE: Re: [EnergyPlus_Support] Overriding Water Flow Constant Flow Low temperature radiant system

Hi, thanks for the help, I have changed the throttling range and lowered the water flow to the other rooms, this wy I could find get full control, my problem was to set well all other rooms.

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, <energyplus_support@xxxxxxxxxxxxxxx> wrote:

Suggestion from Brent in an earlier post:

"One usually needs to setup the IDF object for the radiant slab so its native control limits will not get triggered. Often the native limits and controls in the model will fight with the override. "

This means setup the Radiant object's setpoints so that it is never going to turn on and then take over full control with your EMS also during on times.

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, <energyplus_support@xxxxxxxxxxxxxxx> wrote:

I have looked into all variables connected to the low temp radiant system, pumps, and plant loop, but I found no clue that seems to trigger the water flow to stop. Does anybody would have any idea why the flow rate could just stop?

Thanks,
BR

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, <energyplus_support@xxxxxxxxxxxxxxx> wrote:

Can't remember the answers, but this has been previously discussed on the forum. There is an issue trying to use EMS to control water flow through the radiant object. Do a search.

Mit freundlichen Grüßen- Sent from my iPhone (excuse the brevity)

i. A.
Jean Marais
b.i.g. bechtold
Tel. +49 30 6706662-23

On 18.09.2013, at 08:07, <welma.pereira@...> wrote:

Hi!

I have been trying to override the water flow of the constant flow low temp radiant system using EMS like described in the ems manual. Problem is I checked the outputs and realised that it overrides most times, but some few times it just turns to zero without my own control. Is there a way to always to able to override it? Meaning I would like to have full control myself over the flow.

Any suggestions?
Thanks!