Module number 6 provides an on-line, self-paced training seminar on energy efficiency and energy conservation for residential buildings.

Transcription

1 Module number 6 provides an on-line, self-paced training seminar on energy efficiency and energy conservation for residential buildings. 1

2 This chapter sets forth the requirements for energy efficiency of the building and building systems. It provides three overall methods of demonstrating compliance. 2

3 The RCO directs users with Group R-3 residential buildings to use Chapter 13 from the Ohio Building Code, not the RCO requirements for energy efficiency. 3

4 The parts of the residential buildings that are not within the thermal envelope do not have to meet the requirements for energy efficiency. 4

5 The RCO permits the use of any one of three options to demonstrate compliance with the energy efficiency requirements. 5

6 Looking first at Compliance Option 1, the 2009 IECC Table prescribes the prescriptive insulation and fenestration requirements. Worth mentioning, the IECC also offers a Total UA alternative path and a Simulated Performance Alternative path. 6

7 This table shows the prescriptive fenestration and insulation requirements for various building components. Remember, all locations within Ohio are either in Zone 4 or Zone 5. The changes affecting Ohio in the 2009 IECC, as compared to the 2006 IECC, are circled in red. 7

8 The 2009 IECC introduces a new method for demonstrating that the thermal envelope is properly sealed the blower door testing option. 8

9 Air Barrier and Inspection Component Criteria listed in this table must be used as an inspection check list when the visual inspection method is chosen in the 2009 IECC. This table is repeated in Chapter 11 in the RCO and renamed Table

10 Any dwelling where the primary heating system is a forced air furnace requires at least one programmable thermostat. 10

11 Hot and Cold hydronic piping requires a minimum of R-3 insulation. Lighting fixtures must use high-efficacy lamps in at least half the fixtures. 11

12 Looking now at Compliance Option #2, the RCO Sections RCO Table , like IECC Table , prescribes the prescriptive insulation and fenestration requirements for the building. 12

13 This table shows the prescriptive fenestration and insulation requirements for various building components. The changes, as compared to the previous version of the RCO, are circled in red. 13

14 Two additional locations have been added to the list of areas that must be sealed and verified: Attic access openings Rim joist junction 14

15 The building thermal envelope must be sealed to limit infiltration. Section , like the IECC, requires that adequate sealing of the envelope be demonstrated by limiting the air leakage, either by a testing option or visual inspection. 15

16 The testing option requires that an actual blower door test must result in less than 7 air changes per hour. 16

17 The visual inspection option requires actual field inspection using the prescribed list in Table

18 This slide shows a Blower Door Test assembly with an infrared camera showing air leakage. This test is optional for RCO Chapter 11 Compliance options 1 and 2. However, for Compliance Option 3, the OHBA option discussed later, this test is mandatory. 18

19 Hot and Cold hydronic piping requires a minimum of R-3 insulation. Lighting fixtures must use high-efficacy lamps in at least half the fixtures. 19

20 This third compliance option was developed in cooperation with the Ohio Home Builders Association and provides an alternative means of compliance. 20

21 This list provides a quick summary of the significant accomplishments of this energy compliance option as compared to the 2009 IECC. 21

22 This table identifies the different Wood Frame Wall insulation requirements. The applicant shall choose to comply with either Compliance Path #1 or Compliance Path #2 and shall demonstrate compliance with all applicable Section 1105 requirements of that one chosen path. 22

23 This table shows the OHBA Alternative requirements and compares them with the 2006 IECC and the 2009 IECC Zone 5 prescriptive requirements. Note, again, the two OHBA Compliance Path Options for the Above Grade Wall Insulation. These Compliance Paths are linked to the Duct Tightness Compliance Path Options in the following 2 slides. Remember, the applicant shall demonstrate compliance with all applicable requirements of only one chosen compliance path. 23

24 This table is a continuation of the OHBA Alternative summary of requirements as compared with the 2006 IECC and the 2009 IECC Zone 5 prescriptive requirements. Please note that there are two different Compliance Paths in the OHBA Duct Tightness row that are linked to the Above Grade Wall Insulation Compliance Path Options described in the previous slide. Also please note that the OHBA building infiltration and duct tightness verification testing is required starting January 1, 2014, which is one year after the effective date of the code. Finally, please note that the duct tightness testing is not required if the air handler and all ducts are located within conditioned space. See the following slide for the actual duct tightness testing details for the OHBA Compliance Paths 1 and 2. 24

25 This table summarizes the OHBA duct tightness tests which are to be conducted either at rough-in or post construction and only if the air handler or the ducts are outside conditioned space. 25

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