Mandatory provision 6.4.3.2 Setpoint Overlap Restriction
When heating and cooling to a zone is controlled by separate thermostatic controls shall heating setpoint exceed cooling setpoint.
In our C&S-project for a retail center we distributed heat and cool through the ventilation system. Due to high internal load from lighting we need a lot of cooling. In some small dressing rooms we have installed additional heaters in the ventilation system since we need a higher temperature in the dressing rooms.
In some operational situation we then can have cooling in the system and then provide additional heat to the dressing rooms. Thus, we do not prevent heating and cooling setpoint restriction.
As far as I understand it is not allowed to use Section 11 – Energy Budget Cost Saving Method?
Is it motivated to describe a small deviation (the project scopes 325 000 square feet and the dressing rooms are 1 500 square feet)
The other option is to design a new and separate ventilation system to the dressing rooms, unfortunately not very cost effective.
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Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5907 thumbs up
January 24, 2013 - 3:18 pm
No you can't use Section 11 for LEED. And you must meet all the mandatory provisions.
Are there separate thermostats for heating and cooling within this zone? Not sure that section applies to your situation.
The idea behind that section is to prevent simultaneous heating and cooling through out a zone. Not sure that providing a small amount of supplemental heat in a small part of a zone qualifies.