Pacific Lutheran University is doing a major interior remodel of its University Center Building. The mechanical scope for this job is limited to moving diffusers and adding three direct expansion air conditioning coils in the existing ductwork. No work is being done to the existing air handlers or other mechanical systems. The LEED-CI Reference Guide states that the requirement of the credit is to "Design portions of the building as covered by the tenant\'s scope of work to comply with ASHRAE Standard 90.1-2004 or the local energy code, whichever is more stringent." As the tenant\'s scope of work is limited to the new air conditioning coils, they are the only pieces of equipment that will comply with ASHRAE 90.1. We feel that this interpretation is consistent with the intent of the prerequisite by bringing the new tenant mechanical systems into code compliance. We are also following the assumption that punishing the tenant for pre-existing equipment is not the goal of this credit. We would like confirmation that we are interpreting the \'tenant\'s scope of work\' correctly. Please confirm that we have interpreted the \'tenant\'s scope of work\' correctly and are meeting the intent of this Prerequisite?
The project team is requesting clarification regarding the applicability of ASHRAE 90.1-2004 HVAC requirements to existing HVAC systems. Per the ASHRAE 90.1-2004 standard, alterations to HVAC Systems in Existing Buildings shall follow all the requirements listed in ASHRAE 90.1-2004 Section 6.1.1.3. If no ductwork is being added or replaced, then ductwork does not need to comply with Sections 6.4.4.1 & 6.4.4.2. Based on the information provided in this CIR, the project team is correct in stating that the new air conditioning coils are the only pieces of mechanical equipment that need to comply with ASHRAE 90.1-2004. Any alterations to the envelope, service water heating, power, and / or lighting systems are also required to comply with the requirements of ASHRAE 90.1-2004. Applicable Internationally.