Rating System

LEED BD+C: New Construction, LEED O+M: Existing Buildings, LEED ID+C: Commercial Interiors, LEED BD+C: Core and Shell, LEED BD+C: Schools

Rating System Version

v3 - LEED 2008, v2 - Schools 2007, v2 - LEED 2.2, v2 - LEED 2.0

Inquiry

Our project is a high school addition/renovation that will be occupied in phases. The mechanical system consists of VAV air handling units, VAV terminals, energy recovery units. Fan coil units and cabinet unit heaters are located in the stairwells and entries. We intend to implement a Construction Indoor Air Quality Management Plan. The Plan will incorporate the five control measures listed in the referenced standard. We will also protect all absorptive materials from moisture damage. During construction, all air handlers in operation will have a MERV-8 filter at each fresh air intake and operate at 100% outside air (no return air). The filters will be located prior (upstream) to the heating and cooling coils. We will de-energize the fan powered VAV terminals and operate the VAV terminal with only primary air from the air handling unit. The contractor will block the bypass air inlets on the air terminal units and turn off the return fan on the VAV\'s. As the fan coil units and cabinet heaters can not support MERV-8 filtration, they will not be used during construction. We will also keep the energy recovery units off line to prevent contamination of the wheel. MERV-8 filters will be provided on all return air intakes. Following the 3/6/2007 credit ruling, commissioning and balance testing procedures for those units will take place when indoor construction activities will not adversely affect indoor air quality. Immediately prior to occupancy, MERV-13 filters will be installed at all air handling units as stated in the 10/20/2003 credit ruling. Please confirm if the proposed compliance path meets the credit intent. If it is not acceptable, please clarify what changes are required in order to meet the credit requirements.