User manual

FAQ for CBECC-Res 2013

Alternatively, start with a new file, choose the appropriate climate zone and proceed. Once a file is

saved, all fields will become user-defined (red text).

3. Did it get easier to get electric water heating to comply? If so, why?

If natural gas is not available, it is easier to show compliance with electric water heating. A

comparison of propane and electricity costs showed electricity was more cost effective than

propane.

4. In which zone should I model the walls between the house and the garage?

These walls are modeled in a conditioned zone as an interior wall. Because they have no solar gains,

there is no associated orientation, so you may combine the areas and model a single wall. While at

least R-13 insulation is required in the wall, there is no stucco or one-coat stucco exterior surface,

but both the inside and outside surfaces are gypsum board. If additional surfaces are needed for the

garage zone, break up one or more of the walls into two or more parts to make four walls, as well as

the slab and ceiling.

5. Am I using the latest CF1R version?

In the footer of the CF1R, I notice different numbers and am concerned about whether I am getting

the latest CF1R. For example, one has a 470 and another has a 504. Why is the Report Version

number different and what is the latest?

The CF1R template is different depending on the building type. For new construction, the CF1R

Report Version (shown in the footer) is 470 (format generally established on 10/25/13). The Report

Version for an addition/alteration is 504 (established on 12/10/13). To the right of this field is when

the report was generated.

Another important number is in the General Information, fields 07 and 09. As of the time of this FAQ

the Software and Compliance Manager versions are 1e. Any approved software will use the same

Compliance Manager version and the value is the same regardless of whether running an

addition/alteration or new construction.

6. Can I use the EZFrame calculator in conjunction with CBECC-Res? The Residential Manual mentions

an EZ-Fame assembly calculator (previously used for metal frame assemblies). Will we be able to use

this program in conjunction with CBECC-Res?

There will be no need for EZ-Frame. CBECC-Res calculates assemblies and their performance without

the need for any external calculation. The next scheduled improvement to CBECC-Res is to include

many more construction types, such as metal framing, mass construction and SIPs.

FAQS POSTED ON DECEMBER 20, 2013

1. Where do I input the documentation author and the Designer/Owner information for the CF1R?

There is no software input for this information. This information will be added once the CF1R is

registered with a HERS provider.

2. Why does the sample file go so far out of compliance when I change it to my climate zone?

Because it is based on Climate Zone 12 (a zone with big heating and cooling loads), it may not have

the measures that match Package A’s features (the standard design) for your climate zone. For

example, a whole house fan, verified refrigerant charge and a cool roof may not be appropriate

features in some milder climate zones and could result in a negative cooling margin.