I thought I had a correct example, but it appears the chiller I have is not shutting off during the winter season. What am i doing wrong (I can apply this also to boiler).
Thanks. It has been a long day.
John R. Aulbach, PE
John,
I wasn?t able to achieve the seasonal control. I am not sure what the correct steps are. It seems like it should be fairly simple ? one flag for LOOP-ON and another flag for LOOP-OFF but it doesn?t seem to work.
Christopher Jones, P. Eng.
Rowan Williams Davies & Irwin Inc.
Consulting Engineers & Scientists
901 King Street West, Suite 400, Toronto, Ontario, M5V 3H5
T: (519) 823-1311 ext 2052
M: (416) 697-0056
John,
I would just use LOOP-OPERATION -> SCHEDULED for the CHW loop instead of bothering with the equipment control and load management.
Regards,
~Bill
William Bishop, PE, BEMP, BEAP, CEM, LEED AP | Pathfinder Engineers & Architects LLP
Senior Energy Engineer
[cid:image001.jpg at 01D1E7EA.0B2FCAA0] [cid:image002.jpg at 01D1E7EA.0B2FCAA0]
134 South Fitzhugh Street Rochester, NY 14608
T: (585) 698-1956 F: (585) 325-6005
bbishop at pathfinder-ea.com www.pathfinder-ea.com
[http://png-5.findicons.com/files/icons/977/rrze/720/globe.png]Carbon Fee and Dividend - simple, effective, and market-based.
LOOP-OPERATION ? SNAP to an outdoor temp of 55-65 is my go-to quick means of approximating a seasonal heating/cooling plant lockout (and an appropriate starting point or guess when you don?t/can?t know an exact schedule for manual shutoff).
As Bill says, you can go further and assign a specific schedule under LOOP-OPERATION using an ON/OFF/TEMP. Natural progression when you have calendar dates in mind for the lockout and/or you have a combination of snap behavior and forcing things off to consider.
If you need to lock out SPECIFIC boilers/chillers, then you gotta step up to equip-controls/load-management. Eliminate the simpler options before pressing forward.
~Nick
Nick Caton, P.E.
Senior Energy Engineer
Energy and Sustainability Services
North America Operations
Schneider Electric
D 913.564.6361
M 785.410.3317
E nicholas.caton at schneider-electric.com
F 913.564.6380
15200 Santa Fe Trail Drive
Suite 204
Lenexa, KS 66219
United States
John,
I wasn?t able to achieve the seasonal control. I am not sure what the correct steps are. It seems like it should be fairly simple ? one flag for LOOP-ON and another flag for LOOP-OFF but it doesn?t seem to work.
Christopher Jones, P. Eng.
Rowan Williams Davies & Irwin Inc.
Consulting Engineers & Scientists
901 King Street West, Suite 400, Toronto, Ontario, M5V 3H5
T: (519) 823-1311 ext 2052
M: (416) 697-0056
John,
I would just use LOOP-OPERATION -> SCHEDULED for the CHW loop instead of bothering with the equipment control and load management.
Regards,
~Bill
William Bishop, PE, BEMP, BEAP, CEM, LEED AP | Pathfinder Engineers & Architects LLP
Senior Energy Engineer
[cid:image001.jpg at 01D1E7EA.0B2FCAA0] [cid:image002.jpg at 01D1E7EA.0B2FCAA0]
134 South Fitzhugh Street Rochester, NY 14608
T: (585) 698-1956 F: (585) 325-6005
bbishop at pathfinder-ea.com www.pathfinder-ea.com
[http://png-5.findicons.com/files/icons/977/rrze/720/globe.png]Carbon Fee and Dividend - simple, effective, and market-based.
LOOP-OPERATION ? SNAP to an outdoor temp of 55-65 is my go-to quick means of approximating a seasonal heating/cooling plant lockout (and an appropriate starting point or guess when you don?t/can?t know an exact schedule for manual shutoff).
As Bill says, you can go further and assign a specific schedule under LOOP-OPERATION using an ON/OFF/TEMP. Natural progression when you have calendar dates in mind for the lockout and/or you have a combination of snap behavior and forcing things off to consider.
If you need to lock out SPECIFIC boilers/chillers, then you gotta step up to equip-controls/load-management. Eliminate the simpler options before pressing forward.
~Nick
Nick Caton, P.E.
Senior Energy Engineer
Energy and Sustainability Services
North America Operations
Schneider Electric
D 913.564.6361
M 785.410.3317
E nicholas.caton at schneider-electric.com
F 913.564.6380
15200 Santa Fe Trail Drive
Suite 204
Lenexa, KS 66219
United States