(u) Air source heat pump, which is a system which is part of the central heating system and which has the capability of extracting heat from a body of air and transferring this heat to a body of liquid or to another body of air for space conditioning purpose;

(v) Water source heat pump, which is a system which is part of the central heating system and which has the capability of extracting heat from a body of water and transferring this heat to another body of liquid or to a body of air for space conditioning purposes. (Part B of Title IV of the Energy Conservation and Production Act, Pub. L. 94-385, 90 Stat. 1125 et seq.; also issued under Part C, Title III of the Energy Policy and Conservation Act, Pub. L. 94-163, 89 Stat. 871 et seq. (42 U.S.C. 6321 et seq.); Federal Energy Administration Act of 1974, as amended, Pub. L. 93-275 (15 U.S.C. 761 et seq.); Department of Energy Organization Act, Pub. L. 95-91, 91 Stat. 565 et seq. (42 U.S.C. 7101 et seq.); EO 11790, 39 FR 23185)

[42 FR 37800, July 25, 1977, as amended at 42 FR 61993, Dec. 8, 1977]

§ 450.32 Requirements and limitations for energy conservation measures. (a) Ceiling insulation shall be that amount which is required to raise the total ceiling insulation in a heating zone as measured by an R-Value, to levels not greater than

(e) Caulks, sealants, and weatherstripping shall be eligible in all climate

zones.

(f) Roof insulation shall be no greater than that amount which is required to raise the total insulation to the level of R-Value 20 in heating zone 5. In all other heating zones, this amount of roof insulation is eligible where the structure is air conditioned by an absorption chiller.

(g) Clock thermostats shall automatically change a temperature setting to match heating and cooling demands, and complete not less than one cycle of adjustment in a 24 hour period, in all climate zones.

(h) Exterior insulation for hot water heaters shall be no greater than that amount which is required to raise the total exterior insulation to the level of R-Value 19, in all climate zones.

(1) Insulation for forced air ducts shall be no greater than that amount which is required to raise the total insulation to the level of R-Value 19, in all climate zones.

(j) Storm windows shall be eligible in heating zones 2, 3, 4, and 5, provided that existing windows single glazed.

are

(k) Efficient lighting fixtures and lamps shall produce more than twice the useful light per watt of the lighting system they replace, in all climate

zones.

(1) Mixing valves for a hot water supply line shall be capable of manual adjustment of water temperature, without water shut off or disconnection, in all climate zones.

(m) Flow restrictors for hot water lines shall be eligible for all shower heads and faucets in all climate zones. (n) Residential burners for oil fired heating equipment shall—

(1) Cost less than $340 installed;

(2) Be certified by the manufacturer to be capable of yielding an efficiency rating of 82 percent or higher in a new furnace as measured by a standard steady state efficiency test measuring CO2 and stack temperature; and

(3) Replace inefficient burners, which shall be burners that cannot be adjusted using the procedures and tests prescribed in E.P.A. publication 600/275-069A, entitled Guidelines for Residential Oil Burner Adjustments, Oct.,

(p) New commercial or industrial oil burners and controls shall—

(1) Replace oil burners that cannot maintain 10 percent CO2 at 4 firing rate, 11 percent CO2 at 1⁄2 firing rate and 14 percent CO2 at full firing rate, while producing less than number two smoke spot number for No. 2 oil or less than number three smoke spot number for No. 6 oil, using the test prescribed in ASTM Standard D2156–65 (70); and

(2) Be certified by the manufacturer to maintain 11 percent CO2 at 1⁄4 firing rate, 12.5 percent CO2 at 1⁄2 firing rate, and 14.5 percent CO2 at full firing rate, while producing less than number two smoke spot number for No. 2 oil or less than number three smoke spot number for No. 6 oil using the test prescribed.

(q) Controls for lighting shall be installed on a circuit having a wattage of more than 1,500 watts for automatic controls and 400 watts for manual branch circuit switches, in all climate zones.

(r) HVAC controls, in all climate zones, shall be—

(1) Automatic, turn down, time actuated thermostats;

(2) Steam controls, valves, thermostats, timers, or external temperature sensors to limit space temperatures;

(3) Economizer controls and systems to utilize outside air in lieu of conditioned air when outside air temperatures will assist;

(4) Controls to reduce air distribution volume to meet demand;

(5) Controls to reduce heating or air conditioning systems output to minimum levels during unoccupied periods;

or

1.5

2

5

7.5

10

15

20

25

1

5.7

5.4

3.9

3.9

3.4

3.0

2.4

2.3

Efficiencies shall be determined by IEEE standard 112A method B, under ANSI standard C.50.2. Percentage points efficiency increase is the arithmetic sum of the efficiency of the new motor operation less the efficiency of the existing motor operation.

(t) Whole house ventilation fans shall have the capacity to provide one complete exchange of air in less than two minutes, provided that the residential buildings are air conditioned and located in cooling zones 1, 2, or 3.

(u) An air source heat pump must be evaluated by a verification audit in accordance with the procedures in subpart C of this part to determine whether savings in a specific application are sufficient to recover the costs of purchase and installation within its attributed life.

(v) A water source heat pump must be evaluated by a verification audit in accordance with the procedures in subpart C of this part to determine whether costs savings in a specific application are sufficient to recover the costs of purchase and installation within its attributed life.

(Part B of Title IV of the Energy Conservation and Production Act, Pub. L. 94-385, 90 Stat. 1125 et seq.; also issued under Part C, Title III of the Energy Policy and Conservation Act, Pub. L. 94-163, 89 Stat. 871 et seq. (42 U.S.C. 6321 et seq.); Federal Energy Administration Act of 1974, as amended, Pub. L. 93-275 (15 U.S.C. 761 et seq.); Department of Energy Organization Act, Pub. L. 95–91, 91 Stat. 565 et seq. (42 U.S.C. 7101 et seq.); EO 11790, 39 FR 23185)

[42 FR 37800, July 25, 1977, as amended at 42 FR 61993, Dec. 8, 1977]

Subject to the requirements set forth in §450.34, a renewable-resource energy measure shall be a

(a) Agricultural waste-fired boiler, which is a system which is partially or completely fueled by agricultural residues;

(b) Geothermal space heating or cooling system, which is a system that uses heat extracted from the earth for either electrical generation or space conditioning purposes; and

(c) Skylight, which is a device which is installed to replace small portions of a roof for the purpose of supplying a portion of the lighting requirements of a building;

(d) Solar electric dispersed photovoltaic system, which is a system which involves the use of small arrays of cells which convert solar radiation into electric power for on-site use;

(e) Solar powered pump, which is a system which captures energy radiated by the sun, and uses this energy to power a pump;

(f) Solar process heating system, which is a system which captures energy radiated by the sun for use in industrial or agricultural processes;

(g) Solar space heating or cooling system, which is a system which captures energy radiated by the sun, and uses it for space conditioning purposes;

(h) Solar water heater, which is a system which captures energy radiated by the sun, and uses it to heat water;

(1) Urban waste-fired boiler, which is a system which is partially or entirely fueled by refuse or a refuse derived fuel;

(j) Urban waste pyrolysis system, which is a system which uses urban wastes as a fuel and processes the wastes into a liquid or gaseous fuel;

(k) Water powered generator which is a system which captures and stores the energy contained in moving water and transforms this energy into electricity;

(1) Wind powered generator, which is a system which captures and stores the energy transmitted by the wind and transforms this energy into electric power;

(m) Wind powered water pump, which is a system which captures the energy transmitted by the wind and uses this

energy to extract water from a reservoir;

(n) Wood-fired boiler, which is a system which is partially or completely fueled by wood or wood residues;

(0) Wood-fired stove, which is a stove fueled by wood and which is installed primarily for space conditioning purposes.

(Part B of Title IV of the Energy Conservation and Production Act, Pub. L. 94-385, 90 Stat. 1125 et seq; also issued under Part C, Title III of the Energy Policy and Conservation Act, Pub. L. 94-163, 89 Stat. 871 et seq. (42 U.S.C. 6321 et seq.); Federal Energy Administration Act of 1974, as amended Pub. L. 93-275 (15 U.S.C. 761 et seq.); Department of Energy Organization Act, Pub. L. 95-91, 91 Stat. 565 et seq. (42 U.S.C. 7101 et seq.); EO 11790, 39 FR 23185)

[42 FR 37800, July 25, 1977, as amended at 42 FR 61993, Dec. 8, 1977]

$450.34 Requirements for renewableresource energy measures.

(a) Except as provided in paragraph (b) of this section, a renewable-resource energy measure listed in §450.33 must be evaluated by a verification audit in accordance with the procedures in subpart C of this part to determine whether cost savings in a specific application are sufficient to recover the costs of purchase and installation within the attributed life of the energy

measure.

(b) A solar water heater shall not be required to be evaluated by a verification audit if it is a system which—

(1) Is installed in a residential building; and

(2) Replaces an electric resistance water heater; and

(3) Is purchased, installed, and maintained at a total cost which shall not exceed the maximum allowable cost which shall be computed by

(1) Selecting the correct system life factor in the Federal Region in which the system will be installed for the attributed life of the solar heater specifled by the manufacturer in the following table

Stat. 1125 et seq; also issued under Part C, Title III of the Energy Policy and Conservation Act, Pub. L. 94-163, 89 Stat. 871 et seq. (42 U.S.C. 6321 et seq.); Federal Energy Administration Act of 1974, as amended, Pub. L. 93-275 (15 U.S.C. 761 et seq.); Department of Energy Organization Act, Pub. L. 95-91, 91 Stat. 565 et seq. (42 U.S.C. 7101 et seq.); EO 11790, 39 FR 23185)

[42 FR 37800, July 25, 1977, as amended at 42 FR 61993, Dec. 8, 1977]

$450.35 Climate zones.

(a) DOE shall determine whether to restrict an energy measure to a climate zone.

(b) DOE shall designate climate zones, consisting of heating zones as shown in appendix A to subpart D or cooling zones as shown in appendix B to subpart D.

NOTES

NOTES

Subpart E-Preliminary Energy

Audits and Energy Audits

AUTHORITY: Title III of the National Energy Conservation Policy Act, Pub. L. 95-619, 92 Stat. 3206 et seq., which establishes Parts G and H of Title III of the Energy Policy and Conservation Act, Pub. L. 94-163, 42 U.S.C. 6321 et seq.; Sec. 365(e)(2), 42 U.S.C. 6325(e)(2), of the Energy Conservation and Production Act, Pub. L. 94-385, 42 U.S.C. 6801 et seq.; Department of Energy Organization Act, Pub. L. 95-91, 42 U.S.C. 7101 et seq.

SOURCE: 44 FR 19351, Apr. 2, 1979, unless otherwise noted.

$450.40 Purpose and scope.

This subpart establishes requirements for the conduct of preliminary energy audits and energy audits, the qualifications of persons conducting them and allowable costs of energy audits. Preliminary energy audits and energy audits are required in the program of financial assistance for schools and