[Equest-users] Boiler serving Space HTG & DHW

John Aulbach jra_sac at yahoo.com
Fri Jan 31 10:27:23 PST 2014


If I understand correctly, you are asking how to size a DHW loop. I believe the ASHRAE HVAC Systems manual has a sizing guide in it. Also check out AO Smith boilers for some design guidelines. As I recall, AO Smith sized hotels, apartments, dormitories, and restaurants.

John R. Aulbach, PE

On Friday, January 31, 2014 10:05 AM, "Kasun, Darryl" <darrylk at cbcl.ca> wrote:
Hey eQuest users – I know this has been asked before and I have read some threads but didn’t find anything definitive. 
So I have a set of boilers that serve two secondary loops – one for space heating and another for DHW. 
I’ve read some info on adding the DHW load as a process load to the boiler but I am unsure of how to determine the DHW load and flow. 
Any suggestions on how to model this?   
   Darryl Kasun, LEED™ AP BD+C | Mechanical E.I.T.
CBCL Limited 1489 Hollis Street PO Box 606, Halifax, NS  B3J 2R7
T:902-421-7241 x2522 | E:darrylk at cbcl.ca | F:902-423-3938 |  
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