[Equest-users] LEED and Seasonal operation / DHW heater seasonal operation

James Hansen JHANSEN at ghtltd.com
Wed Jan 29 14:29:40 PST 2014

Recirculation set to 0.01 may be the problem?  Can't you force equipment
on/off via load management / scheduling?


Also, like Nick said, there shouldn't be an issue with unoccupied
periods for schools, but make sure whoever does your FTE calcs takes
that into consideration, and that all Water Efficiency calculations have
+/- 40 weeks per year in lieu of 52.


GHT Limited

James Hansen, PE, LEED AP, BEMP

Senior Associate

1110 N. Glebe Road, Suite 300

Arlington, VA 22201

703.243.1200 (main)

703.338.5754 (direct/cell)

www.ghtltd.com <http://www.ghtltd.com> 


From: equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Nick
Sent: Wednesday, January 29, 2014 5:24 PM
To: Nick Patsos; equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] LEED and Seasonal operation / DHW heater
seasonal operation


1.      I don't think LEED precludes you from modeling a building being
unoccupied for a good chunk of the year (assuming baseline and proposed
have matching schedules), but I would anticipate this to raise some
flags without substantial explanation and backup.  Acquiring something
from the district/owner in writing to submit alongside regular
documentation to back up your scheduling might save you a headache

2.      If there's no pump operation (verified by hourly reports) or
scheduled DHW demand, I think that only leaves the pilot light... ?
That would show up as misc. gas consumption by default, if occurring.
You might post your project to get a second set of eyes on the problem.


Hope that helps!









Smith & Boucher Engineers

25501 west valley parkway, suite 200

olathe, ks 66061

direct 913.344.0036

fax 913.345.0617



From: equest-users-bounces at lists.onebuilding.org [
mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Nick
Sent: Wednesday, January 29, 2014 9:29 AM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] LEED and Seasonal operation / DHW heater
seasonal operation


Hi all,


I'm currently modelling a school building in eQuest for the LEED for
Schools 2009 certification. The school doesn't operate at all in the
summer season (closed) and so it isn't equipped with equipment for


I have made schedules modelling this principle (not operating in
JUNE/JULY/AUGUST) at both proposed and baseline scenarios but I'm
concerned if it is mandatory or not to model a full year's operation
under LEED. In the months of operation, I have modelled both
cooling/heating as it is mandatory.


A second question is how to make the DHW heater not to operate at the
summer months. Having tried everything and after doublechecking that
there is no DHW demand from the annual schedule for the summer months,
the result is that the DHW loop and pump show no use for these months
(seen at the simulation output) but still the DHW heater is operating
consuming significant gas for an unknown reason. Loop is set to demand
operation and recirculation set at 0.01.


Any help highly appreciated. Thanks in advance!


Nikos Patsos

Mechanical Engineer

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