Retrotec DucTester 341 Instrukcja Użytkownika Pobierz pdf (Strona 13)

Page 13 of 83

©Retrotec Inc. 2014

Table 2: Maximum allowable duct leakage (Residential) according to existing Codes

Code:

Based on

2009

IECC

State

Code

State

Code

Residential

Building

Energy Std

ENERGY

STAR

Homes V3

Rev5

Northwest

ENERGY

STAR Homes

CA Title-

Code –

Altered

ducts

Title-24

Code –

New

ducts

Based

2012

IECC

Region:

AL CT DC DE FL

IA ID IN KY MA

MI MT NC NE

NH NJ NM NV

NY OH OR RI

SC VA

USA

Test Pressure

± 25 Pa

25 Pa

50 Pa

25 Pa

Units

CFM

/100 sq ft

CFM

/100 sq

CFM

/ sq ft

CFM

/100 sq ft

CFM

/100 sq ft

CFM

/ sq ft

CFM

/100 sq ft

Max Total Duct

Leakage, at rough

in, NO air handler

N/A

0.04

N/A

4% of

system

airflow

Max Total Duct

Leakage, at rough

in, with air handler

0.08

N/A

6% of

system

airflow

Max Total Duct

Leakage, post

construction with

air handler

0.08

N/A

0.06 CFM/ sq

or 75 CFM

15% of

system

airflow

6% of

system

airflow

Max Duct Leakage

to Outdoors, post

construction with

air handler

0.06

N/A

10% of

system

airflow

N/A

The table is listed from left to right in order of loosest to tightest “Total Duct Leakage” requirements.

Disclaimer: This information is not guaranteed. As Codes are being updated continually, this

table represents the most up to date information available at the time of publishing. Please

refer to “rev” date on cover page of this document to determine date of publishing.

Tighter ducts required

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 82 83

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