RTF Management Updates Jennifer Light Regional Technical Forum December 8, 2015

Topics for Today HVAC Calculator RTF Solicitations Upcoming Topics 2

Background RTF’s “Commissioning, Controls, & Sizing” UES measure calls for sizing to a 30°F balance point – This means the heat pump can provide 100% of the house’s heating needs at outdoor temperatures of 30°F and warmer BPA asked the RTF to update the calculator it developed years ago – Main reason: add variable capacity heat pumps Primary purpose of the sizing calculator: – Simplify heat pump heating season sizing as much as possible Detailed capacity curves are not always readily available to installers, utilities, and evaluators AHRI-rated capacities at 47°F are available 3 – HVAC Calculator

Improvements Made to New Calculator 1.Added sizing for variable capacity heat pumps 2.Removed cooling sizing calculations and detailed window input requirements – This simplification was made because the measure savings apply to heating only 3.Re-designed to be a house-specific calculation – Added a “foundation type” input – Added a “stories above grade” input – Removed option to set insulation levels based on home vintage Now component insulation levels are required inputs – Added “infiltration level” input – Added “duct losses” input 4.Heat Pump Capacity Curve Improvements – Single-Speed: Established an average ratio (0.71) based on recent BPA program installations Previously based on one Lennox unit – Variable-speed: Capacity curves are model and size-specific, so calculator handles each model separately New models will need to be manually added to the calculator 5.Output more specific: Minimum required AHRI-rated heating capacity at 47°F – Previously given in nominal tons 6.Added warnings for out-of-range inputs, etc. 4 – HVAC

Review Reviewers so far: – Jim Haberman (BPA) New calculator’s outputs compare well to the old calculator – Bruce Manclark (CleaResult) – Bob Davis (Ecotope, RTF member) We’re looking for more reviewers: – Open Comment Period: Now through December 18, 2015 Send comments or questions to Adam Hadley – or – HVAC Calculator

Screenshot: Old Calculator 6

Screenshot: New Calculator 7 – HVAC Calculator

Ignore these lines Single Speed Heat Pump Unit Normalized Capacities (~68% of BPA program units represented here) plotted on a balance point worksheet Ignore these lines 8

VCHP’s models not as well-behaved VCHP MFG AVCHP MFG B 9 – HVAC Calculator

RTF Solicitations 10 – RTF Solicitations RTF Assistant – Last day to apply 12/11/15 (more info)more info RFP for Contract Analyst – Proposals due 12/18/15 (more info)more info RFP for QA/QC Services – Proposals due 12/31/15 (more info)more info

Upcoming Meeting Topics Anticipated in early 2016 Residential LED Fixtures (new measure) DHP for New Construction (new measure) DHP for Single Family (Existing Construction) – measure updates Commercial Freezers and Refrigerators Commercial Non-Residential Network Computer Power Management Agricultural Lighting – Area Lights Multifamily Calibration, Weatherization, and New Construction Low-e Storm Windows MH (and MF?) New Homes Standard Protocol 11