D-5.i

APPENDIX D-5. DESIGN OPTION COMBINATIONS

TABLES

Table D-5.1 Complete List of Alternative Design Option Combinations - 

Electric Water Heaters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-5.3

Table D-5.2 Complete List of Alternative Design Option Combinations - 

Gas Water Heaters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-5.4
D-5.1

APPENDIX D-5. DESIGN OPTION COMBINATIONS

This Appendix contains a list of all design option combinations for residential electric and

gas-fired water heaters explored in order to develop the final set of designs used in the analysis to

develop federal efficiency standards for such products.

A total of 23 alternative combinations were explored to develop a set of 6 electric water

heater design option combinations. Table D-5.1 provides a list of all of the alternative combinations

explored for electric water heaters.

A total of 87 alternative combinations were explored to develop a set of 8 gas water heater

design options. Table D-5.2 provides a list of all of the alternative combinations explored for gasfired water heaters.
D-5.2

Table D-5.1 Complete List of Alternative Design Option Combinations - Electric Water

Heaters

Design Index Design Option

00 Existing Baseline

1 2003 Baseline

2 Heat Trap

3 Increased Insulation (2" foam)

3a Increased Insulation (2" foam) + Heat Trap

4 Increased Insulation (2.5" foam)

4a Increased Insulation (2.5" foam) + Heat Trap

5 Increased Insulation (3" foam)

5a Increased Insulation (3" foam) + Heat Trap

6 Insulted Tank Bottom

6a Insulated Bottom + Heat Trap

7 Insulated Bottom + Increased Insulation (2" foam)

7a Insulated Bottom + Increased Insulation (2" foam) + Heat Trap

8 Insulated Bottom + Increased Insulation (2.5" foam)

8a Insulated Bottom + Increased Insulation (2.5" foam) + Heat Trap 

9 Insulated Bottom + Increased Insulation (3" foam)

9a Insulated Bottom + Increased Insulation (3" foam) + Heat Trap 

10 Plastic Tank

10a Plastic Tank + Heat Trap

11 Plastic Tank + Increased Insulation (2" foam)

11a Plastic Tank + Increased Insulation (2" foam) + Heat Trap 

12 Plastic Tank + Increased Insulation (2.5" foam)

12a Plastic Tank + Increased Insulation (2.5" foam) + Heat Trap 

13 Plastic Tank + Increased Insulation (3" foam)

13a Plastic Tank + Increased Insulation (3" foam) + Heat Trap 
D-5.3

Table D-5.2 Complete List of Alternative Design Option Combinations - Gas Water Heaters

Design Index Design Option

0 Existing Baseline

1 2003 Baseline

1a 2003 Baseline 245fa (Resistance to Flammable Vapors Ignition)

2 Heat Trap

3 Increased Insulation (2" foam)

3a Increased Insulation (2" foam) + Heat Trap

4 Increased Insulation (2.5" foam)

4a Increased Insulation (2.5" foam) + Heat Trap

5 Increased Insulation (3" foam)

5a Increased Insulation (3" foam) + Heat Trap

6 78% RE (Improved Flue Baffle)

6a 78% RE (Improved Flue Baffle) + Heat Trap

7 78% RE (Improved Flue Baffle) + Increased Insulation (2" foam)

7a 78% RE (Improved Flue Baffle) + Increased Insulation (2" foam) + Heat Trap

8 78% RE (Improved Flue Baffle) + Increased Insulation (2.5" foam)

8a 78% RE (Improved Flue Baffle) + Increased Insulation (2.5" foam) + Heat Trap

9 78% RE (Improved Flue Baffle) + Increased Insulation (3" foam)

9a 78% RE (Improved Flue Baffle) + Increased Insulation (3" foam) + Heat Trap

10 80% RE (Improved Flue Baffle)

10a 80% RE (Improved Flue Baffle) + Heat Trap

11 80% RE (Improved Flue Baffle) + Increased Insulation (2" foam)

11a 80% RE (Improved Flue Baffle) + Increased Insulation (2" foam) + Heat Trap

12 80% RE (Improved Flue Baffle) + Increased Insulation (2.5" foam)

12a 80% RE (Improved Flue Baffle) + Increased Insulation (2.5" foam) + Heat Trap

13 80% RE (Improved Flue Baffle) + Increased Insulation (3" foam)

13a 80% RE (Improved Flue Baffle) + Increased Insulation (3" foam) + Heat Trap

14 Electronic Ignition & Electromech. Flue Damper

14a Electronic Ignition & Electromech. Flue Damper + Heat Trap

14b Electronic Ignition & Electromech. Flue Damper + Heat Trap + 78% RE

14c Electronic Ignition & Electromech. Flue Damper + Heat Trap + 80% RE

15 Electronic Ignition & Electromech. Flue Damper + Increased Insulation (2" foam)

15a Electronic Ignition & Electromech. Flue Damper + Increased Insulation (2" foam) + Heat Trap

15b Electronic Ignition & Electromech. Flue Damper + Increased Insulation (2" foam) + Heat Trap +

78% RE

15c Electronic Ignition & Electromech. Flue Damper + Increased Insulation (2" foam) + Heat Trap +

80% RE

16 Electronic Ignition & Electromech. Flue Damper + Increased Insulation (2.5" foam)

16a Electronic Ignition & Electromech. Flue Damper + Increased Insulation (2.5" foam) + Heat Trap

16b Electronic Ignition & Electromech. Flue Damper + Increased Insulation (2.5" foam) + Heat Trap +

78% RE

16c Electronic Ignition & Electromech. Flue Damper + Increased Insulation (2.5" foam) + Heat Trap +

80% RE
D-5.4

Table D-5.2 Complete List of Alternative Design Option Combinations - Gas Water Heaters

(cont’d)

Design Index Design Option

17 Electronic Ignition & Electromech. Flue Damper + Increased Insulation (3" foam)

17a Electronic Ignition & Electromech. Flue Damper + Increased Insulation (3" foam) + Heat Trap

17b Electronic Ignition & Electromech. Flue Damper + Increased Insulation (3" foam) + Heat Trap +

78% RE

17c Electronic Ignition & Electromech. Flue Damper + Increased Insulation (3" foam) + Heat Trap +

80% RE

18 Side-Arm Design (Indirect Heating + IID + Metal Tank + 76% RE)

18a Side-Arm Design (Indirect Heating + IID + Metal Tank + 76% RE + Heat Trap)

18c Side-Arm Design (Indirect Heating + IID + Metal Tank + 76% RE+ Insulation 2")

18d Side-Arm Design (Indirect Heating + IID + Metal Tank + 76% RE+ Insulation 2" + Heat Trap)

18e Side-Arm Design (Indirect Heating + IID + Metal Tank + 76% RE+ Insulation 2.5")

18f Side-Arm Design (Indirect Heating + IID + Metal Tank + 76% RE+ Insulation 2.5" + Heat Trap)

18g Side-Arm Design (Indirect Heating + IID + Metal Tank + 76% RE+ Insulation 3")

18h Side-Arm Design (Indirect Heating + IID + Metal Tank + 76% RE+ Insulation 3" + Heat Trap)

19 Side-Arm Design (Indirect Heating + IID + Plastic Tank + 76% RE)

19a Side-Arm Design (Indirect Heating + IID + Plastic Tank + 76% RE + Heat Trap)

19c Side-Arm Design (Indirect Heating + IID + Plastic Tank + 76% RE+ Insulation 2")

19d Side-Arm Design (Indirect Heating + IID + Plastic Tank + 76% RE+ Insulation 2" + Heat Trap)

19e Side-Arm Design (Indirect Heating + IID + Plastic Tank + 76% RE+ Insulation 2.5")

19f Side-Arm Design (Indirect Heating + IID + Plastic Tank + 76% RE+ Insulation 2.5" + Heat Trap)

19g Side-Arm Design (Indirect Heating + IID + Plastic Tank + 76% RE+ Insulation 3")

19h Side-Arm Design (Indirect Heating + IID + Plastic Tank + 76% RE+ Insulation 3" + Heat Trap)

20 Side-Arm Design (Indirect Heating + IID + Metal Tank + 78% RE)

20a Side-Arm Design (Indirect Heating + IID + Metal Tank + 78% RE + Heat Trap)

20c Side-Arm Design (Indirect Heating + IID + Metal Tank + 78% RE+ Insulation 2")

20d Side-Arm Design (Indirect Heating + IID + Metal Tank + 78% RE+ Insulation 2" + Heat Trap)

20e Side-Arm Design (Indirect Heating + IID + Metal Tank + 78% RE+ Insulation 2.5")

20f Side-Arm Design (Indirect Heating + IID + Metal Tank + 78% RE+ Insulation 2.5" + Heat Trap)

20g Side-Arm Design (Indirect Heating + IID + Metal Tank + 78% RE+ Insulation 3")

20h Side-Arm Design (Indirect Heating + IID + Metal Tank + 78% RE+ Insulation 3" + Heat Trap)
D-5.5

Table D-5.2 Complete List of Alternative Design Option Combinations - Gas Water Heaters

(cont’d)

Design Index Design Option

21 Side-Arm Design (Indirect Heating + IID + Plastic Tank + 78% RE)

21a Side-Arm Design (Indirect Heating + IID + Plastic Tank + 78% RE + Heat Trap)

21c Side-Arm Design (Indirect Heating + IID + Plastic Tank + 78% RE+ Insulation 2")

21d Side-Arm Design (Indirect Heating + IID + Plastic Tank + 78% RE+ Insulation 2" + Heat Trap)

21e Side-Arm Design (Indirect Heating + IID + Plastic Tank + 78% RE+ Insulation 2.5")

21f Side-Arm Design (Indirect Heating + IID + Plastic Tank + 78% RE+ Insulation 2.5" + Heat Trap)

21g Side-Arm Design (Indirect Heating + IID + Plastic Tank + 78% RE+ Insulation 3")

21h Side-Arm Design (Indirect Heating + IID + Plastic Tank + 78% RE+ Insulation 3" + Heat Trap)

22 Side-Arm Design (Indirect Heating + IID + Metal Tank + 80% RE)

22a Side-Arm Design (Indirect Heating + IID + Metal Tank + 80% RE + Heat Trap)

22c Side-Arm Design (Indirect Heating + IID + Metal Tank + 80% RE+ Insulation 2")

22d Side-Arm Design (Indirect Heating + IID + Metal Tank + 80% RE+ Insulation 2" + Heat Trap)

22e Side-Arm Design (Indirect Heating + IID + Metal Tank + 80% RE+ Insulation 2.5")

22f Side-Arm Design (Indirect Heating + IID + Metal Tank + 80% RE+ Insulation 2.5" + Heat Trap)

22g Side-Arm Design (Indirect Heating + IID + Metal Tank + 80% RE+ Insulation 3")

22h Side-Arm Design (Indirect Heating + IID + Metal Tank + 80% RE+ Insulation 3" + Heat Trap)

23 Side-Arm Design (Indirect Heating + IID + Plastic Tank + 80% RE)

23a Side-Arm Design (Indirect Heating + IID + Plastic Tank + 80% RE + Heat Trap)

23c Side-Arm Design (Indirect Heating + IID + Plastic Tank + 80% RE+ Insulation 2")

23d Side-Arm Design (Indirect Heating + IID + Plastic Tank + 80% RE+ Insulation 2" + Heat Trap)

23e Side-Arm Design (Indirect Heating + IID + Plastic Tank + 80% RE+ Insulation 2.5")

23f Side-Arm Design (Indirect Heating + IID + Plastic Tank + 80% RE+ Insulation 2.5" + Heat Trap)

23g Side-Arm Design (Indirect Heating + IID + Plastic Tank + 80% RE+ Insulation 3")

23h Side-Arm Design (Indirect Heating + IID + Plastic Tank + 80% RE+ Insulation 3" + Heat Trap)