[Equest-users] space heating between natural gas VAV RTU and electric resistance terminal units

[David Reddy]

Ramana-

It appears you have not defined at Hot Deck Max Leaving temp 
(HEAT-SET-T), which needs to be specified for the central Furnace coil 
to be energized in the simulation.  Also, for PIU (and I believe all the 
other multizone systems), the central coil LATs will track the Cool 
Control properties, which in your case, is an OA Reset Schedule.  I 
suggest setting up an hourly report for the air handler coil leaving air 
temperatures, and observing what is happening are to understand how the 
control set points are being implemented.

Hope this helps,
David

On 6/22/2012 1:25 PM, Ramana Koti wrote:
> Dear all,
> My question relates to distributing space heating between the central 
> VAV RTU (natural gas furnace) and PIU terminal units (electric 
> resistanct heating). My elecriticy consumption for space heating end 
> use seems very high from November to April which makes me suspect that 
> the system is not set up accurately - majority of space heating is 
> wrongly being picked up by electric resistance in terminal units as 
> opposed to being picked up by the natural gas furnace in the RTU.
> From the BEPS report, of the total annual energy consumption of 372.7 
> MBTU, 148.7 MBTU is electricity space heating and 7.6 MBTU is natural 
> gas space heating.
> I have attached eQUEST screenshots of my heating and cooling 
> cap/control settings for this system. Any input on how this situation 
> can be rectified will be highly appreciated.
> Thank you,
> Ramana Koti.
>
>
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