### SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT

(Adopted December 1, 1978)(Amended July 8, 1983) ( Amended November 6, 2009 ) ( Amended September 5, 2014 )

RULE 1111

– REDUCTION OF NO x EMISSIONSFROM NATURAL

- GAS

- FIRED, FAN

- TYPE CENTRAL FURNACES

(a) Purpose and Applicability The purpose of this rule is to reduce NOx emissions from natural gas

- fired, fan

type central furnaces, as defined in this rule. This rule applies to manufacturers, distributors, sellers and installers of residential and commercial fan

- type central
furnaces , requiring either single

- phas e or three

- phase electric supply, used for comfort heating with a rated heat input c apacity of less than 175,000 BTU per
h ou r , or, for combination heating and cooling units, a cooling rate of less tha n 6 5,000 BTU per h ou r.

( b ) Definitions (1) ANNUAL FUE L UTILIZATION EFFICI ENCY (AFUE) is defined in Section 10.1 of Code of Federal Regulations, Title 10, Part 430, Subpart B, Appendix N. (2) BTU means British thermal unit or units

. (3) CONDENSING FURNACE means a high

- efficiency furnace that uses a
second hea t exchanger to extract the latent heat in the flue gas by cooling the combustion gasses to near ambient temperature so that water vapor condenses in the heat exchanger , is collected and drained

. ( 4 ) F AN TYPE CENTRAL FURNACE is a self

- contained space heater providing for circulation of heated air at pressures other than atmospheric through ducts more than 10 inches in length that have: (A) a RATED HEAT INPUT CAPACITY of less than 175,000 BTU

per h ou r; or (B) for combination heating and cooling units, a cooli ng rate of less than 65,000 BTU per h ou r. (5 ) HEAT INPUT means the higher heating value of the fuel to the furnace measured as BTU per hour. (6 ) NOx EMISSIONS means the sum of nitrogen oxide and nitrogen dioxide (oxides of nitrogen) in the flue gas, col lectively expressed as nitrogen
dioxide.

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(7 ) RATED HEAT INPUT CAPACITY means the gross HEAT INPUT of the
combustion device

. ( 8 ) RESPONSIBLE OFFICIAL means: (A) For a corporation: a president or vice

- president of the corporation in charge of a princi pal business function or a duly authorized person who performs similar policy

- makin g functions for the corporation, or (B) For a partnership or sole proprietorship: general partner or proprietor, respectively

. ( 9 ) SINGLE FIRING RATE means the burners a nd control system are designed to operate at only one fuel input rate and the control system cycles burners between the maximum heat output and no heat output

. ( 1 0 ) U SEFUL HEAT DELIVERED TO THE HEATED SPACE is the AFUE (expressed as a fraction) multiplied by the heat input. (1 1 ) VARIABLE FIRING RATE means the burners and control system are designed to operate at more than one fuel input rate and the control system cycles burners between two or more heat output rates and no heat output

. (1 2 ) WEATHERIZED mean s designed for installation outside of a building

, equipped with a protective jacket and integral venting, and labeled for
outdoor installation

.

( c ) Requirements (1) A manufacturer shall not, after January 1, 1984, manufacture or supply for
sale or use in the South Coast Air Quality Management District natural

gas

- fired, fan

- type central furnaces, unless such furnaces meet the requirements of paragraph (c) (3). (2) A person shall not, after April 2, 1984, sell or offer for sale within the South Coast Air Qu ality Management District natural

- gas

- fired, fan

- type central furnaces unless such furnaces meet the requirements of paragraph (c) (3).

(3) Natural

- gas

- fired, fan

- type central furnaces shall: (A) not emit more than 40 nanograms of oxides of nitrogen (calcu lated
as NO 2 ) per joule of useful heat delivered to the heated space; and (B) be certified in accordance with subdivision ( d ) of this rule.

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(4) On or after October 1, 2012

, a person shall not manufacture

, suppl y, sell, offer for sale, or install

, for use i n the South Coast Air Quality Management District

, natural

- gas

- fired, fan

- type central furnaces subject
to this rule , unless such furnace complies with the applicable emission
limit and compliance date set forth in Table 1 and is certified in
accordance wi th subdivision (d) of this rule.

Table 1

– Furnace NOx Limits and Compliance Schedule

* N anograms of oxides of nitrogen (calculated as NO 2 ) per joule of useful heat delivered to the

heated space
(5) Any manufacturer of fan

- type centr al furnaces regulated by this rule may elect to pay a per unit mitigation fee of $200 for each condensing furnace and $150 for each non

- condensing, weatherized or mobile home furnace distributed or sold into the SCAQMD in lieu of meeting the 14 nanogram/Jo ule NOx emission limit in Table 1 of paragraph (c)(4) of this
rule. A manufacturer may elect to pay the per unit mitigation fee for a time period of no more than 36 months after the applicable compliance date in Table 1 of paragraph (c)(4). A manufacture r shall submit an alternate compliance plan for each 12 month time period after the applicable compliance date during which the manufacturer elects to pay the mitigation fee in lieu of meeting the NOx emission limit. (A) Any manufacturer electing to comp ly using this mitigation fee option shall submit to the SCAQMD an alternate compliance plan no later than 60 days prior to the applicable compliance date that
includ es the following: (i) a letter with the name of the manufacturer requesting the mitigation fee compliance option signed by a responsible
official identifying the category of fan

- type central furnaces Compliance Date Equipment Category NOx Emission Limit (nanograms/Joule * )
October 1, 2012 Mobile Home Furnace 40

April 1, 2015 Condensing Furnace 14

October 1 , 2015 Non

- condensing Furnace 14

October 1 , 2016 Weatheri zed Furnace 14

October 1 , 2018 Mobile Home Furnace 14

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and the 12 month alternate compliance period that the mitigation fee s cover; ( ii ) an estimate of the quantity of applicable Rule 1111 fan

type cen tral furnaces to be distributed or sold into the SCAQMD during the alternate compliance period , which
estimate shall be based on total distribution and sales
records or invoices of condensing, non

- condensing,
weatherized or mobile home fan

- type central fur naces that
were distributed or sold in to the SCAQMD during the 12
month period of July 1 to June 30 prior to the applicable compliance date , along with supporting documentation ; ( i ii ) a completed SC AQMD Form 400A with company name, identification that appl ication is for a n alternate compliance plan (section 7 of form), identification that the request is for the Rule 1111 mitigation fee compliance option (section 9 of form), and signature of the responsible official; ( i v ) a check for payment of the alternate compliance plan filing
fee (Rule 306, section (c))

. (B) The manufacturer shall submit to the Executive Officer a report signed by the responsible official for the manufacturer identifying by model number the quantity of Rule 1111 fan

- type central
furnaces actually distributed or sold into SCAQMD and a check for payment of mitigation fees for the applicable 12 month alternate compliance period for the quantity of applicable Rule
1111 fan

- type central furnaces distributed or sold into the SCAQMD during the a lternate compliance period . The report and the payment of mitigation fees must be submitted to the SCAQMD no later than thirty (30) days after the end of each 12

- month mitigation fee alternate compliance period.

( d ) Certification (1) The manufacturer sha ll have each appliance model tested in accordance with the following: (A) Oxides of nitrogen measurements, test equipment, and other required test procedures shall be in accordance with AQMD
Method 100.1

.

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(B) Operation of the furnace shall be in accordance with the procedures specified in Section 4.0 of Code of Federal Regulations, Title 10, Part 430, Subpart B, Appendix N. (2) One of the two formulas shown below shall be used to determine the nanograms of oxides of nitrogen per joule of useful heat deliver ed to the heated space:

N = 4.566 x 10 4 x P x U
, N = 3.655 x 10 10 x P H x C x E (20.9

- Y) x Z x E

Where:

N = nanograms of emitted oxides of nitrogen per joule of useful heat.

P = concentration (ppm volume) of oxides of nitrogen in flue gas as t ested.

U = volume percent CO 2 in water

- free flue gas for stoichiometric combustion.

H = gross heating value of fuel, BTU/cu.ft. (60 o F, 30

- in. Hg).

C = measured volume percent of CO 2 in water

- free flue gas, assuming complete combustion and no CO prese nt.

E = AFUE, percent (calculated using Table 2).

Y = volume percent of O 2 in flue gas.

Z = heating value of gas, joules/cu. meter (0.0 o C, 1 ATM).

(3) At least 120 days prior t o the date a furnace model is first shipped to a
location in the AQMD for use in the District

, t he manufacturer shall submit to the Executive Officer the following: (A) A statement that the model is in compliance with sub division ( c ). (The statement shall be signed by a responsible official and dated,
and shall attest to the a ccuracy of all statements.) (B) General Information (i) Name and address of manufacturer. (ii) Brand name. (iii) Model number, as it appears on the furnace rating plate. (C) A description of the furnace and specifications for each model being certified.

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(D) Executive Officer approved e mission test protocol and emission

test results verify ing compliance with the applicable NOx limit specified in Table 1

.
( e ) Identification of Compliant Units (1) The manufacturer of the furnace complying with sub division s ( c ) and (d) shall display the following on the shipping c ontainer label and rating plate
of the furnace : (A) Model number; (B) Heat input capacity; (C) Applicable NOx emission limit in Table 1 ; and (D) Date of manufacture or date code

. ( 2 ) Any non

- certified furnace shipped to a location in the South Coast Air Quality Management District for distribution or sale outside of the District shall have a label on the shipping container identifying the furnace as not
certified for use in the District.

( f

) Enforcement
The Executive Officer may periodically conduct such tests as are deemed
necessary to ensure compliance with sub division ( c ) , (d), (e) and (h)

.

( g ) Exemptions (1) The provisions of this rule shall not apply to furnaces installed in mobile
homes before October 1, 2012

. ( 2) For furnaces manufactured, purchased and delivered to the South Coast Air Quality Management District prior to the applicable compliance date in Table 1, any person may, until 300 days after the applicable compliance date, sell, offer for sale, or insta ll such a furnace in the District, so long as
the furnace meet s the requirements of paragraph (c)(3) and subdivisions (d) and (e).

(h) Rebate Incentives for Early Compliance Any manufacture r of natural gas

- fired, fan

- type central furnaces subject to this
rule that distributes and sells into the District furnace s that compl y with the 14 nanograms/Joule emission limit 90 days prior to the applicable compliance date in Table 1 of paragraph (c)(4) may submit a compliance plan for early compliance to
the Execut ive Offic er and to receive on a first

- come first

- served basis from the

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AQMD a rebate payment of $75 for each 14 nanograms / Joule certified furnace
and $90 for each high efficiency 14 nanograms/Joule certified furnace with AFUE of 90% or greater distributed and sold into the District

, provided funds are
available on the date documentation o n the number of units distributed and sold is submitted to the AQMD

. Total rebate payments to all manufacturers shall not exceed $3,000,000.

( i ) Technology Assessment
On or before April 1 , 2013, the Executive Officer shall conduct a technology
assessment and shall report to the Governing Board on the status of
manufacturers ’ progress towards compliance with the 14 nanogram s / Joule emission limit for nitrogen oxides

.

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