Hello Everyone,
I am using a Multi-Zone 3 deck constant volume system and have given all
the required flow rates and horse power information for that system.
When I run the compliance check analysis for Title 24, it gives me a
"HVAC System 'EL1 Sys1 (MZS) (ML.C1)' Hot Deck Supply Flow (no default)"
error and I am not able to proceed without eliminating this error.
The error description says: Missing Data - Hot deck supply air flow rate
required for permit submittal.
I have all the air flow rates specified as Min cfm/sf under flow
parameters under fans for a MZS system (Actually the error navigation
takes directly to this input screen and I have all the parameters
entered) and for some reason it keeps giving me this error.
Is there any other place I have to give the Hot deck supply flow rate
for a MZS?
Please help!
Thanks and happy new year to all.
Premnath Sundharam, Assoc. AIA, LEED AP
Hello All,
Found out what the problem is or at least this is what I think the
problem is. Title 24 does not allow heating and cooling to happen
simultaneously. So when I selected a single fan multi-zone 2 deck
constant volume with hot water loop heat system, there is no way to
enter the Hot deck supply air flow rate. See image below.
So I had to change the system to have DUAL FAN under DUAL DUCT TYPE
(even though my system has only one fan) and now I was able to enter
heating supply flow. See image below. Now the error is gone!
So I believe, in concept this is a work around in eQuest to model THREE
DECK Multi-zone systems. So when there is no heat required the heating
fan just shuts down and vice versa. What I am not sure is, whether
eQuest will have two fan loads instead of one.... And I am not sure how
to check that in eQuest either...
Anyways hoping that this would simulate my three deck single fan
multi-zone with hot water loop heat system as precisely as it can.
If others have found a better way to model three deck multi zone with
single fan, please let me know... it will be a great help.
Thanks.
Prem