[Equest-users] Shutting off DX cooling in winter

[Nicholas CATON]

Hey John!

One way to skin the cat:  Under the Airside Systems tab (SYSTEM inputs), you can assign an optional cooling availability and/or heating availability schedule to limit/control the availability of either heating or cooling, independent of the fan schedule.

I don’t think this is generally limited to DX/heatpump systems - you can use the same inputs to control heating/cooling coil availability in a hydronic system as well (which would allow for something like a hydronic loop to keep circulating but have specific systems stop drawing on the associated loop).

Hope that’s helpful!

~Nick

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Nick Caton, P.E. (US), BEMP
ニック ケートン, P.E. (US), BEMP
Senior Energy Engineer
Energy Manager, Yokota Airbase
ESS - Energy & Sustainability Services
M JP
M US
DSN
Email
+81 . 070 . 3366 . 3317
+1   . 785 .  410  . 3317
         315 .  225  . 1672
nicholas.caton at se.com<mailto:nicholas.caton at se.com>
シニアエネルギーエンジニア
横田基地エネルギーマネージャー
ESS - エナジー持続可能性サービス

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From: Equest-users <equest-users-bounces at lists.onebuilding.org> On Behalf Of John Aulbach via Equest-users
Sent: Tuesday, June 14, 2022 12:11 PM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] Shutting off DX cooling in winter


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________________________________


I know i asked this question before, but I have misplaced the answer. And i do not believe it was a thermostat control.

If i want to keep the heating going in a DX VAV system in the winter and shut down cooling, how would this be done?

The fan must keep going but the DX compressor must stop.

In a chilled water system, you can shut off the pump. But no pump exists in a DX system.

Thanks in advance.

John R. Aulbach, PE
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