[Equest-users] Heating is not on for System Type Pkgd Var Vol, and 4380 under heated hours

[Daric Adair]

Jing;

First thing that jumps out at me is that there is no Heating Discharge Air Tempertaures or Reheat Temperatures set on the System>Heating Tab (last image you shared). For a VAV System I’d expect these values to be something like: Zone Max Temp: 90F Hot Deck Max Leaving Temperature 60F and Reheat Delta T: 35F.


Thanks,
DARIC R ADAIR PE, CEM, BEMP
Mechanical Engineer, Energy Analyst

Henderson Engineers
daric.adair at hendersonengineers.com<mailto:daric.adair at hendersonengineers.com>

Licensed in KS

From: Jing Hong <hongjing.shirley at gmail.com>
Sent: Tuesday, November 13, 2018 3:16 PM
To: equest-users at lists.onebuilding.org; equest-users at onebuilding.org
Subject: [Equest-users] Heating is not on for System Type Pkgd Var Vol, and 4380 under heated hours

Dear All,

My model is located in Mexico and three zones are equipped with VFD. So I selected Pkgd Var Vol + Heat pump for these three zones and set the system up by the design cooling and heating capabilities. Currently, the SS-R shows 4380 under heated hours for each of the zones. And no space heat is provided for any of the zones. Does anyone know the possible reasons for this phenomenon?
 I've done several solutions by searching:
- Increased Throttling Range
- Night Cycle Control --> Set to "Cycle on Any"
 - Fan Control and Placement - Set to" Hourly Report Schedule"

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Thank you!

Jing


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