User manual

FAQ for CBECC-Res 2013

Yes. However, as of this writing, if you have a garage, you will need to model the garage with a

cathedral ceiling as well. No insulation in the garage ceiling is required.

9. What are the options for the sources of U-factor and SHGCs allowed by the standards?

Specifically, what is ADFP?

The three valid sources are NFRC, default, or ADFP, which stands for Alternate Default Fenestration

Procedure. A rarely used provision in the standards is for unrated site-built fenestration, it requires

the use of Reference Appendix NA6 which is called the Alternate Default Fenestration Procedure

(ADFP). The same source must be used for both U-factor and SHGC. Whichever source is used, the

standards require a temporary label on every window. See References Appendices (CEC-400-2012-

005), pp. NA6-1 through 6-5 for further information and responsibilities associated with this

calculation procedure.

FAQS POSTED ON MARCH 18, 2014

1. While waiting for a HERS provider to register CF1Rs, is there any harm in removing the watermark

that says the CF1R is “not registered”?

The CF1R that will be submitted with the application for a permit and that will be registered with a

HERS Data Registry is actually embedded in the "-Analysis Results-BEES.xml" file. The Report

Generator employs xml data signing, which can detect whether the contents have been changed or

manipulated in any way, notifying the HERS Data Registry that the submission is not valid.

Nothing in this approach will prevent someone from manipulating a PDF and walking into the

building department to obtain a permit. However, the building department can easily confirm the

registration number at the HERS Data Registry.

As noted in the Final Inspection newsletter produced by the Standards Implementation Office of the

Energy Commission, unregistered CF1R forms can be submitted to the building department as part

of the Early Adopter Program. Prior to obtaining a final permit, a HERS Provider-registered CF1R

form will be required as soon as one or more HERS Providers are approved

(http://www.energy.ca.gov/efficiency/final_inspection/

More information about how the xml data signing works:

The HERS Data Registry extracts and decodes the report data from the XML transfer file into the

CF1R to be processed and registered. This transfer file implements xml data signing, which does two

things:

(1) The xml data includes a hash, which is a calculated value (in data bytes) based on the content

processed by the Report Generator and its private key. This hash can be verified using the

Report Generator's public key when verified by a data registry. Any attempt to alter the

contents of the xml transfer file will result in invalidating the signature and the data registry will

not allow that file to be used for document registration.

(2) The xml data signing identifies the source as uniquely being the Report Generator using the

public key and hash that is included in the data.

2. Is the value input for the number of stories intended to be the value for the building or the zone? I

ask because I noticed the CF1R shows 3 stories, but it is only a 2-story building.