minnesota’s residential energy code, submittal documents ... mn residential energy.pdfsubmittal...

Don Sivigny/ Code development Rep Sr./ State Energy Specialist

651-284-5874

[email protected]| www.dli.mn.gov

5/29/2018 1

Minnesota’s Residential Energy code, Submittal Documents for Plan Review

Agenda

Time Topic

7:30-7:40 Introduction, Objective and Outcome

7:40-7:50 Learning Statements

7:50-8:00 Purpose of the Energy Code

8:00-8:40 Submittal Documents & the Energy Certificate and classroom Exercise

8:40-8:50 Break

8:50-9:20 Submittal Documents & the Energy Certificate and classroom Exercise (cont.)

9:20-9:45 Calculation Heat Loss and Classroom Exercise

9:45-10:00 Inspection Items and Q & A

5/29/2018 2

Objective and Outcome

• Objective: Provide information and instructions to attendees on how to understand and review submittal documentation, to ensure that all the information is provided to complete a proper plan review of the building energy systems in compliance with the code.

Objective and Outcome

• Outcome: Attendees will be able to recognize, understand and explain what information is needed, and the importance of why it is needed, to complete a proper plan review of the buildings energy systems in compliance with the code.

Learning Statements “What are we going to Learn?”

5/29/2018 5

Learning Statements “What are we going to Learn?”

1. What are Considered as the Buildings Energy Systems.

5/29/2018 Optional Tagline Goes Here | www.dli.mn.gov 6

Learning Statements

• 2. What is Required for a Proper Plan Review?

Learning Statements

• How do I verify the calculated heat loss?

Learning Statements

• How do I verify the equipment is sized correctly for the Home?

Learning Statements

• How do I verify the needed amounts of air for the mechanical ventilation system?

What are considered as the Buildings “Energy” Systems?

5/29/2018 11

Building Energy Code?

Purpose of the Energy Code.

5/29/2018 12

To regulate the efficiency of all the buildings Energy Systems.


5/29/2018 13


Building EnvelopeR402, Page 43

5/29/2018 14



Mechanical Systems

R403, Page 48 & R403.5, Page 50

5/29/2018 15



Mechanical Systems

R403, Page 48 & R403.5, Page 50

Service Water Heating

R403.3 & R403.4, Page 50

5/29/2018 16



Mechanical Systems

R403, Page 48 & R403.5, Page 50

Service Water Heating

R403.3 & R403.4, Page 50

Electrical Systems

R404, Page 54

5/29/2018 17

Submittal Documents

5/29/2018 18

What is required for a proper plan review of the building and the buildings “Energy”

systems? (Section R401.3, Page 43)

New Construction Energy Code Compliance Certificate Per R401.3 Certificate. A building certificate shall be posted on or in the electrical distribution panel.

Place your logo here

Date Certificate Posted

Mailing Address of the Dwelling or Dwelling Unit

City

Name of Residential Contractor

MN License Number

THERMAL ENVELOPE RADON CONTROL SYSTEM

Insulation Location

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f all

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f In

sula

tion

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Location (or future location) of Fan:

Other Please Describe Here

Below Entire Slab Foundation Wall Perimeter of Slab on Grade Rim Joist (1st Floor) Rim Joist (2nd Floor+) Wall Ceiling, flat Ceiling, vaulted Bay Windows or cantilevered areas Floors over unconditioned area Describe other insulated areas Building Envelope Air Tightness:

Duct System Air Tightness:

Windows & Doors Heating or Cooling Ducts Outside Conditioned Spaces Average U-Factor (excludes skylights and one door ) U: Not applicable, all ducts located in conditioned space Solar Heat Gain Coefficient (SHGC): R-value MECHANICAL SYSTEMS Make-up Air Select a Type

Appliances Heating System Domestic Water Heater Cooling System Not required per mech. code Fuel Type Passive Manufacturer Powered Model Interlocked with exhaust device. Describe: Rating or Size Input in BTUS:

Capacity in Gallons:

Output in Tons:

Other, describe:

Efficiency AFUE or HSPF% SEER /EER

Location of duct or system:

Residential Load Calculations

Heating Loss Heating Gain Cooling Load CFMs

" round" duct OR

MEHCANICAL VENTILATION SYSTEM " metal " duct

Combustion Air Select a Type Describe any additional or combined heating or cooling systems if installed: (e.g. two furnaces or air source heat pump with gas back-up furnace): Select Type

Not required per mech. code

Passive

Heat Recovery Ventilator (HRV) Capacity in CFMs: Low: High: Other, describe: Energy Recovery Ventilator (ERV) Capacity in CFMs: Low: High: Location of duct or system: Balanced Ventilation Capacity in CFMs: Location of fans(s), describe: CFMs Capacity of continuous ventilation rate in CFMs: “round” duct OR Total ventilation (intermittent + continuous) rate in CFMs: “metal” duct

New Construction Energy Code Compliance Certificate

Per R401.3 Certificate. A building certificate shall be posted on or in the electrical distribution panel.


Builders Association of Minnesota version 101014

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Classroom Exercise

• Let’s walk through the certificate and the plan in an attempt to Complete our Plan review. You will need the following:

• 1. The Code Book with the IRC and Energy codes in it.

• 2. The copy of the Plan

• 3. Pencil/Pen and Scratch Paper

5/29/2018 20

New Construction Energy Code Compliance Certificate Per R401.3 Certificate. A building certificate shall be posted on or in the electrical distribution panel.




City


MN License Number


Insulation Location

Tot

al R

-Val

ue o

f all

Type

s o

f In

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Windows & Doors Heating or Cooling Ducts Outside Conditioned Spaces Average U-Factor (excludes skylights and one door ) U: Not applicable, all ducts located in conditioned space Solar Heat Gain Coefficient (SHGC): R-value MECHANICAL SYSTEMS Make-up Air Select a Type

Appliances Heating System Domestic Water Heater Cooling System Not required per mech. code Fuel Type Passive Manufacturer Powered Model Interlocked with exhaust device. Describe: Rating or Size Input in BTUS:

Capacity in Gallons:

Output in Tons:

Other, describe:

Efficiency AFUE or HSPF% SEER /EER


Residential Load Calculations

Heating Loss Heating Gain Cooling Load CFMs

" round" duct OR

MEHCANICAL VENTILATION SYSTEM " metal " duct

Combustion Air Select a Type Describe any additional or combined heating or cooling systems if installed: (e.g. two furnaces or air source heat pump with gas back-up furnace): Select Type


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Sizing the Mechanical Equipment

5/29/2018 22

Calculating Heat Loss

How do I verify the calculated heat loss?

There are a few options to do this. You will need the following:

1. Q = UA(dT)2. ACCA Manual J3. Others

5/29/2018 23

Q= UA(dT)

What exactly is this equation?... And why do we need to understand it?

5/29/2018 24

Q= UA(dT)


• Q = what we are trying to define

5/29/2018 25

Q= UA(dT)



• U = the U-factor of the assembly

5/29/2018 26

Q= UA(dT)

• What exactly is this equation?... And why do we need to understand it?



• A = the Area of the assembly

5/29/2018 27

Q= UA(dT)




• A = the Area of the assembly

• (dT) = Delta T or temperature difference

5/29/2018 28

Practice Example

Let’s calculate a simple heat loss of a wall• Here is a simple example of a heat loss calculation for one wall, and then the

same wall just adding one window.

5/29/2018 29

Practice Example

Let’s calculate a simple heat loss of a wall• Here is a simple example of a heat loss calculation for one wall, and then the

same wall just adding one window.

• Note the changes in heat loss when we add the window

5/29/2018 30

Practice Example

Q = UA(dT) = heat load assessment = defines equipment sizing.

• Ex. Room is 10 x 10 x 10

• Using Assuming a wall U=0.050• (Conversion) R-20 = (1 divided by 20) = U

5/29/2018 31

Lets look at just one wall

5/29/2018 32


• 1 Wall that is 10’ tall and 10’ wide. Equals an Area (A) of 100 Sq. Ft

5/29/2018 33



• Btu’s per hour (Q) = 0.050 (U) x 100 Sq Ft. (A) x 90 (dT)

5/29/2018 34



• Btu’s per hour (Q) = 0.0526 (U) x 100 Sq Ft. (A) x 90 (dT)

• Btu’s per wall for design loads = 450 Btu’s

5/29/2018 35

What is the total heat loss for all 4 walls of our Building?

Adding in all 4 walls at the exact same Btu’s for each wall (4 x 450) would require a heating appliance capable of supplying a minimum of 1,800 Btu’s

5/29/2018 36

What is the total heat loss for all 4 walls when we add a 4x4 Window meeting todays Energy Code into one wall?

Wall #4 was 100 Sq. Ft. at .0526 U- Factor. Now it is only 84 Sq. Ft. at the .050 U-Factor + 16 Square foot at a 0.32 U-Factor to accommodate the window

5/29/2018 37

Change Wall #4 and add a Window

• Wall 1 = .050 x 100 x 90 = 450 Btu’s

• Wall 2 = .050 x 100 x 90 = 450 Btu’s This can make a big Overall Difference

• Wall 3 = .050 x 100 x 90 = 450 Btu’s

• Wall 4 = .050x 84 x 90 = 378 Btu’s

• Window 1 In wall 4=

.32 x 16 x 90 = 461 Btu’s

Total Btu’s now are 2189 total Btu’s

-1800 Wall w/out Window

Difference of 389 Btu’s (It Adds Up)

5/29/2018 38

Class Practice Exercise #1(Go to the Plan at the end of Tab 6 in your 3 ring binder)

Look at only the Master Bedroom 2 walls and tell me what is the heat loss through them combined.

5/29/2018 39

Class Practice Exercise #1

Look at only the Master Bedroom 2 walls and tell me what is the heat loss through them combined

Remember the equation Q = UA (dT)

Given R value of 21 in the walls with a 8’ ceiling height

Don’t count the window areas in your calculation for walls- do them separately

What is the total heat loss of the two walls only? And windows only?

5/29/2018 40

Answers to Practice Exercise #1Wall #1 Window #1

14.5 x 5.25 x

8 4.5

116 Sq. Ft. (-) 23.625 (24) = 92 Sq. Ft.

Wall #2 Window #2 197 Sq. Ft. (Wall area only)

14.25 x 6 x

8___ 1.5___

114 Sq. Ft. (-) 9 Sq. Ft. = 105 Sq. Ft.

Walls only: Q = (U) .0476 x (A) 197 x (dT) 90 = 843.94 or 844 Btu’s of heat loss through these two walls only.

5/29/2018 41

Answers to Practice Exercise #1

Window #1 Window #2

5.25 x 6.00 x

4.5 1.5

23.625 (24) + 9.00 = 33.0 Total Sq. Ft Window Area

Assuming a 0.32 Window U Factor

Windows Only: Q = (U) 0.32 x (A) 33 x (dT) 90 = 950.04 or 951 Btu’s of heat loss through these two windows.

5/29/2018 42

Final Answers to Practice Exercise #1

Walls only: Q = (U) .0476 x (A) 197 x (dT) 90 = 843.94 or 844 Btu’s of heat loss through these two walls only.

+

Windows Only: Q = (U) 0.32 x (A) 33 x (dT) 90 = 950.04 or 951 Btu’s of heat loss through these two windows.

Equals a total Heat loss for only the two walls in the master bedroom of 1795 Btu’s

5/29/2018 43

Number 2

5/29/2018 44

Classroom Practice Exercise

Class Practice Exercise #2

This time Look at the Basement Floor, (Remember the equation Q = UA (dT))

The Following are the given.

-R value of 2 for the basement floor

-A under slab ground temperature of 55 degrees

- an interior design temperature of 70 degrees

What is the total heat loss of the floor only?

5/29/2018 45

Answer to Practice Exercise #2

Floor area #1 Floor Area #2

66 x 14 x

30 8

1980 Sq. Ft. + 112 Sq. Ft. = Total of 2092 Sq. Ft.

Q = (u) .50 x (A) 2092 x (dT) 15 = 15,690 Btu’s of heat loss through the Basement floor area.

5/29/2018 46

So… How do I verify the equipment is sized correctly?

5/29/2018 47

Equipment Sizing--There are a few Options

R 403.6 - Equipment SizingACCA Manual ‘J’, Manual ‘S’

Residential heating and cooling equipment will be sized in accordance with ACCA Manual S based on building loads calculated in accordance with ACCA Manual J…

5/29/2018 48

R 403.6 - Equipment SizingACCA Manual ‘J’, Manual ‘S’

Manual J guides HVAC designers to use ACCA Manual S to select equipment that is the right size.

Manual S sets equipment sizing limits, as summarized in Table 1.

5/29/2018 49

ACCA Manual S= Sizing of Equipment

5/29/2018 50

How do I verify the mechanical ventilation requirements of the code?

5/29/2018 51

Ventilation

See Energy code Section R403.5 (Pg. 50-53)

5/29/2018 52

Balanced Mechanical Ventilation

1322.202 (Pg. Definition of Mechanical Ventilation

5/29/2018 53

Mechanical Ventilation is the mechanical process of supplying conditioned or unconditioned air to, or

removing it from, any space.

How much and what type of ventilation is required?

5/29/2018 54

• Total ventilation rate:

• Shall provide sufficient outdoor air = total ventilation rate average, for each one hour period in accordance with Table R403.5.2 .

• Continuous Ventilation:• A minimum of 50% of the total ventilation rate, but not less than 40 CFM, on a

continuous rate average for each one hour period in accordance with Table R403.5.2 or Equation 403.5.2

Table R403.5.2

5/29/2018 55

Table R403.5.2

Table R403.5.2

5/29/2018 56

Table R403.5.2

Table R403.5.2

5/29/2018 57

Table R403.5.2

Table R403.5.2

5/29/2018 58

Table R403.5.2

Mechanical Ventilation

5/29/2018 59

Exhaust Only Systems (no longer Allowed)

Ventilation must be Balanced

Supply Only System Exhaust-only System

Exhaust

Supply

Ventilation must be Balanced

Supply Only System - interlocked with a - Exhaust-only System

Exhaust

Supply

Airflows are Balanced within 10%

Supply - interlocked with a - Exhaust

Exhaust

Supply

HRV OR ERV

New Construction Energy Code Compliance Checklist/Certificate Per R401.3 Certificate. A building certificate shall be posted on or in the electrical distribution panel.



Mailing Address of the Dwelling or Dwelling Unit 1234 Any Street

City Any town Mn

Name of Residential Contractor John Doe Construction Inc.

MN License Number 0000123456


Insulation Location

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al R

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ue o

f all

Type

s o

f In

sula

tion

Type: Check All That Apply x Passive (No Fan )

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cell? Rim Joist (2nd Floor+) N/A Wall R-21 ? Using Friction Fit, is it Fiberglass Insulation? Ceiling, flat R-49 ? ? ? ? What type of product is being used? Ceiling, vaulted ? ? ? ? ? What type of product is being used? Bay Windows or cantilevered areas N/A Floors over unconditioned area N/A Describe other insulated areas N/A Building Envelope Air Tightness:


Windows & Doors Heating or Cooling Ducts Outside Conditioned Spaces Average U-Factor (excludes skylights and one door ) U: Need U-Factors for all Not applicable, all ducts located in conditioned space Solar Heat Gain Coefficient (SHGC): Need SHGC for all R-value (need This if ducts are in exterior walls) MECHANICAL SYSTEMS Make-up Air Select a Type Chis Meir Class

Appliances Heating System Domestic Water Heater Cooling System Not required per mech. code Fuel Type Gas Forced Air furnace Gas N/A Passive Manufacturer ? Need To Know Mfgr. Need To Know Mfgr. N/A Powered Model ? Need to know model ? Need to know model N/A Interlocked with exhaust device. Describe: Rating or Size Input in

BTUS:

? Capacity in Gallons:

? Output in Tons:

N/A Other, describe:

Efficiency AFUE or HSPF%

? ? SEER /EER

N/A Location of duct or system: Residential Load

Calculations Heating Loss Heating Gain Cooling Load

? Need To know N/A N/A CFMs " round" duct OR

MEHCANICAL VENTILATION SYSTEM ? Need to know " metal " duct

Combustion Air Select a Type Chis Meir Cl Describe any additional or combined heating or cooling systems if installed: (e.g. two furnaces or air source heat

pump with gas back-up furnace): Select Type


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Example of a Somewhat Completed Certificate.

Some items still need to be answered. (?)

New Construction Energy Code Compliance Checklist/Certificate




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�

�

�

�

Attic�

�

�

�

�

�

�

�

�

�

�

�


�

�


�

N/A�

�

�

�

�

�

�

�

�

�

Foundation Wall�

�

�

�

R-11�

?�

?�

�

�

�

Using interior Batts and Exterior ? cell Foam�

�


�

N/A�

�

�

�

�

�

�

�

�

�


�

R-21�

�

�

?�

?�

�

�

�

Using R-21 Foam Insul. Is it Open or Closed cell?�

�


�

N/A�

�

�

�

�

�

�

�

�

�

Wall�

�

R-21�

�

?�

�

�

�

�

�

Using Friction Fit, is it Fiberglass Insulation?�

�

Ceiling, flat�

�

R-49�

?�

?�

?�

?�

�

�

�

What type of product is being used?�

�

Ceiling, vaulted�

�

?�

?�

?�

?�

?�

�

�

�

What type of product is being used?�

�


�

N/A�

�

�

�

�

�

�

�

�

�


�

N/A�

�

�

�

�

�

�

�

�

�


N/A�

�


�


�

�

Windows & Doors�


�


Need U-Factors for all �

�


�


Need SHGC for all�

�

R-value (need This if ducts are in exterior walls)�

�


Make-up Air Select a Type Chis Meir Class�

�

Appliances�

Heating System�


Cooling System�

�


�

Fuel Type�

Gas Forced Air furnace�

Gas�

N/A�

�

Passive�

�

Manufacturer�

? Need To Know Mfgr.�

Need To Know Mfgr.�

N/A�

�

Powered�

�

Model�

? Need to know model�

? Need to know model�

N/A�

�


Describe:�

�

Rating or Size�

Input in BTUS: ?�

?�

Capacity in Gallons: �

?�

Output in Tons:�

N/A�

�

Other, describe:�

�

Efficiency�

AFUE or HSPF% ?�

?�

?�

SEER

/EER�

N/A�


�

�

Residential Load

Calculations�

Heating Loss�

Heating Gain�

Cooling Load�

�

�

�

? Need To know�

N/A�

N/A�

�

CFMs�

�

�

�

" round" duct OR�

�

MEHCANICAL VENTILATION SYSTEM ? Need to know�

�

" metal " duct�

�

�

Combustion Air Select a Type Chis Meir Class�

�



Select Type�

�


�

�

�

Passive �

�

�


Low:�

�

High:�

�

�

Other, describe:�

�

�


Low:�

�

High:�

�

�


�

�


�

�

�

�


�

�

CFMs�

�


�

�


�


�

�

“metal” duct�

�

What do I look for when doing inspections?

5/29/2018 64

Inspection Time

Foundations

• Foundation waterproofing is required from finished grade to top of footing.

IECC Section 402.1.1

Waterproofing and insulation systems may include a requirements for a Slip Sheet.IECC Section R402.1.1.3

67

Foundations

Waterproofing and insulation systems may include a requirements for a Slip Sheet.

Draining Insulation: Thermal insulation that, when installed, allows bulk water to drain by gravity from every point across its width.

Non-Draining Insulation: Thermal insulation that, when installed, allows bulk water to drain by gravity only on its vertical exterior surfaces.

Attic Insulation System


6 “ Minimum Heel Height

5/29/2018 69

Attic Insulation System

5/29/2018 70

R 402.2.3-Eave Baffle

• For air-permeable insulations in vented attics

EXTERIOR STUD WALL

INTERIOR DRYWALL

CELLULOSE INSULATION

EAVE BAFFLE (WIND BLOCK)

SOFFIT BAFFLE (VENTILATION CHUTE)

Labeled R-Values


Good Installation Practices

5/29/2018 73

Wall Insulation Installation Grading I-III

Grade I Grade II Grade III

2% R-0, 98% R-Value “as labeled.”Insulation mostly making contact with all sides of framing. Some indentations and compressions of the insulation.

5% R-0, 95% R-Value “as labeled.”Insulation has multiple gaps and compressions. Insulation was not cut –to-fit around plumbing or wiring.

R-Value “as labeled.”Insulation makes full contact w/ all sides of wall framing. No indentations or gaps. Insulation is cut-to-fit around plumbing and wiring.

Review/Summary“ Did we address our Learning Statements?”

5/29/2018 75

Learning Statements

1. What are Considered as the Buildings Energy Systems


Learning Statements

• 2. What is Required for a Proper Plan Review?

Learning Statements

• How do I verify the calculated heat loss?

Learning Statements

• How do I verify the equipment is sized correctly for the Home?

Learning Statements

• How do I verify the needed amounts of air for the mechanical ventilation system?

81

The End

Questions? or Comments

5/29/2018 82

Thank You!

Don Sivigny

[email protected]

651-284-5874

5/29/2018 83

��AgendaObjective and OutcomeObjective and OutcomeLearning Statements �“What are we going to Learn?”Learning Statements �“What are we going to Learn?”Learning StatementsLearning StatementsLearning StatementsLearning StatementsWhat are considered as the Buildings “Energy” Systems?Purpose of the Energy Code. What are considered as the Buildings “Energy” Systems?What are considered as the Buildings “Energy” Systems?What are considered as the Buildings “Energy” Systems?What are considered as the Buildings “Energy” Systems?What are considered as the Buildings “Energy” Systems?Submittal DocumentsSlide Number 19Classroom ExerciseSlide Number 21Sizing the Mechanical EquipmentHow do I verify the calculated heat loss?Q= UA(dT) Q= UA(dT) Q= UA(dT) Q= UA(dT) Q= UA(dT) Practice ExamplePractice ExamplePractice ExampleLets look at just one wallLets look at just one wallLets look at just one wallLets look at just one wallWhat is the total heat loss for all 4 walls of our Building?What is the total heat loss for all 4 walls when we add a 4x4 Window meeting todays Energy Code into one wall?Change Wall #4 and add a WindowClass Practice Exercise #1�(Go to the Plan at the end of Tab 6 in your 3 ring binder)�Class Practice Exercise #1Answers to Practice Exercise #1Answers to Practice Exercise #1Final Answers to Practice Exercise #1Number 2Class Practice Exercise #2Answer to Practice Exercise #2So… How do I verify the equipment is sized correctly?R 403.6 - Equipment Sizing�ACCA Manual ‘J’, Manual ‘S’R 403.6 - Equipment Sizing�ACCA Manual ‘J’, Manual ‘S’ACCA Manual S= Sizing of EquipmentHow do I verify the mechanical ventilation requirements of the code?See Energy code Section R403.5 (Pg. 50-53)1322.202 (Pg. �Definition of Mechanical VentilationHow much and what type of ventilation is required? Table R403.5.2Table R403.5.2Table R403.5.2Table R403.5.2Mechanical VentilationVentilation must be BalancedVentilation must be BalancedAirflows are Balanced within 10% Slide Number 63What do I look for when doing inspections?FoundationsSlide Number 66Slide Number 67Attic Insulation System6 “ Minimum Heel HeightAttic Insulation SystemR 402.2.3-Eave BaffleLabeled R-ValuesGood Installation PracticesWall Insulation Installation Grading I-IIIReview/Summary�“ Did we address our Learning Statements?”Learning Statements Learning StatementsLearning StatementsLearning StatementsLearning StatementsSlide Number 81Questions? or CommentsThank You!