[Equest-users] Creating a Single Packaged DX Coil with Gas Furnace

[Bishop, Bill]

Hi Damon,
Can you provide the Carrier product sheet for the unit? A packaged DX unit will generally be natural gas-fired, though it could have a hot water coil. It would be unusual to have both, but you could model it that way in a single unit if needed. (You could model a gas-fired 'Furnace' preheat coil along with a Hot Water Loop for the main SYSTEM:HEAT-SOURCE for example.) But you say there is no HW loop, so why would it have a HW coil?
I suspect you should model this as a PSZ system ("Pkgd Single Zone", which only comes with DX cooling) with FURNACE for HEAT-SOURCE. Your ZONE-HEAT-SOURCE should be "Not Installed" unless you have a reheat coil.
Regards,
~Bill

William Bishop, PE, BEMP, BEAP, CEM, LEED AP | Pathfinder Engineers & Architects LLP
Senior Energy Engineer

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From: Equest-users [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Damon Lapping via Equest-users
Sent: Wednesday, March 07, 2018 2:14 AM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] Creating a Single Packaged DX Coil with Gas Furnace

Good Day,

This may seem like a simplistic question as I'm new to eQUEST.

I am familiar with different cooling systems but not so much heating systems.

I need to add in a combined single zone DX Coil package with natural gas used for heating, from the specs I have I assume it's a furnace with a hot water coil.
It's a carrier.

However in Equest there isn't a combined system so I added in two systems one for the Single Zone DX Coil Cooling only then added in a separate entry for the heating as a furnace with a hot water coil.

I ran the model but when going into the detailed model I don't see the hot water coil, if I add it into the heating tab then I need to add a hot a water loop and there is none.

I might be totally off the mark here but am battling with this section, any assistance would be great.

Thanks

Regards

DAMON LAPPING
Managing Consultant
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