7.3-i

APPENDIX 7.3. DETERMINATION OF BASIC FURNACE MODELS

LIST OF TABLES

Table 7.3A.1 Models and Manufacturers of Non-Condensing Basic Model 

Non-Weatherized Gas Furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.3-3

Table 7.3A.2 Values of Input Capacity (kBtu/h) for Non-Condensing Basic Model 

Non-Weatherized Gas Furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.3-4

Table 7.3A.3 Values of Output (kBtu/h) Non-Condensing Basic Model 

Non-Weatherized Gas Furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.3-5

Table 7.3A.4 Values of Maximum CFM @ 0.5 in w.c. for Non-Condensing Basic Model 

Non-Weatherized Gas Furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.3-6

Table 7.3A.5 Values of Low CFM @ 0.5 in w.c. for Non-Condensing Basic Model 

Non-Weatherized Gas Furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.3-7

Table 7.3A.6 Values of Blower Size (diam X width) for Non-Condensing Basic Model 

Non-Weatherized Gas Furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.3-8

Table 7.3A.7 Values of Motor Size (HP) for Non-Condensing Basic Model 

Non-Weatherized Gas Furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.3-9

Table 7.3A.8 Number of Speed Taps for Non-Condensing Basic Model 

Non-Weatherized Gas Furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.3-10

Table 7.3A.9 Values of Supply Air Outlet Area (sq.ft.) for Non-Condensing Basic Model 

Non-Weatherized Gas Furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.3-11

Table 7.3A.10 Values of AFUE for Non-Condensing Basic Model 

Non-Weatherized Gas Furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.3-12

Table 7.3A.11 Values for Eae (kWh/y) for Non-Condensing Basic Model 

Non-Weatherized Gas Furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.3-13

Table 7.3A.12 Values of PE (W) for Non-Condensing Basic Model 

Non-Weatherized Gas Furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.3-14

Table 7.3A.13 Values of On-Delay (secs) for Non-Condensing Basic Model 

Non-Weatherized Gas Furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.3-15

Table 7.3A.14 Values of Off-Delay Time (secs) for Non-Condensing Basic Model 

Non-Weatherized Gas Furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.3-16

Table 7.3A.15 Values of Pre-Purge Time (secs) for Non-Condensing Basic Model 

Non-Weatherized Gas Furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.3-17

Table 7.3A.16 Values of Post-Purge Time (secs) for Non-Condensing Basic Model 

Non-Weatherized Gas Furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.3-18

Table 7.3B.1 Models and Manufacturers of Condensing Basic Model 

Non-Weatherized Gas Furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.3-19

Table 7.3B.2 Values of Input Capacity (kBtu/h) for Condensing Basic Model 

Non-Weatherized Gas Furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.3-20

Table 7.3B.3 Values of Output (kBtu/h) Condensing Basic Model 

Non-Weatherized Gas Furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.3-21

Table 7.3B.4 Values of Maximum CFM @ 0.5 in w.c. for Condensing Basic Model 
7.3-ii

Non-Weatherized Gas Furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.3-22

Table 7.3B.5 Values of Low CFM @ 0.5 in w.c. for Condensing Basic Model 

Non-Weatherized Gas Furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.3-23

Table 7.3B.6 Values of Blower Size (diam X width) for Condensing Basic Model 

Non-Weatherized Gas Furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.3-24

Table 7.3B.7 Values of Motor Size (HP) for Condensing Basic Model 

Non-Weatherized Gas Furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.3-25

Table 7.3B.8 Number of Speed Taps for Condensing Basic Model 

Non-Weatherized Gas Furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.3-26

Table 7.3B.9 Values of Supply Air Outlet Area (sq.ft.) for Condensing Basic Model 

Non-Weatherized Gas Furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.3-27

Table 7.3B.10 Values of AFUE for Condensing Basic Model 

Non-Weatherized Gas Furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.3-28

Table 7.3B.11 Values for Eae (kWh/y) for Condensing Basic Model 

Non-Weatherized Gas Furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.3-29

Table 7.3B.12 Values of PE (W) for Condensing Basic Model 

Non-Weatherized Gas Furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.3-30

Table 7.3B.13 Values of On-Delay (secs) for Condensing Basic Model 

Non-Weatherized Gas Furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.3-31

Table 7.3B.14 Values of Off-Delay Time (secs) for Condensing Basic Model 

Non-Weatherized Gas Furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.3-32

Table 7.3B.15 Values of Pre-Purge Time (secs) for Condensing Basic Model 

Non-Weatherized Gas Furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.3-33

Table 7.3B.16 Values of Post-Purge Time (secs) for Condensing Basic Model 

Non-Weatherized Gas Furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.3-34

LIST OF FIGURES

Figure 7.3.1 Number of Non-Weatherized Furnace Models by Input Capacity ........ 7.3-2
7.3-1

APPENDIX 7.3. DETERMINATION OF BASIC FURNACE MODELS

To determine basic furnace models, DOE selected 26 airflow/capacity bins. The

Department selected the bins by looking at “common” (popular) sizes of input capacity in the

Gas Appliances Manufacturers Association (GAMA) certified efficiency ratings database for the

period April 2002 to October 2002.1

 The Department assumed that the frequency of models of a

particular size indicated how common or popular the size was. Product literature and furnace

manufacturer web sites helped in further determining series of furnaces considered to be “basic

models.”

To determine the characteristics of basic furnace models of non-condensing

non-weatherized gas furnaces, the Department examined single-stage, natural gas furnaces that

are not intended for mobile homes. In addition, DOE selected upflow and horizontal models

since they represent the majority of models and often have similar or identical specifications and

efficiency values to downflow models from the same manufacturer. (Of the 8,342 models in the

GAMA directory, 77 percent were either horizontal or upflow.) Similarly, only non-condensing

furnaces at or above 80 percent AFUE were picked since they represent the majority of

non-weatherized gas furnaces. To further refine the basic model selection criteria, DOE used

product literature to select models without variable speed blower motors. Manufacturer web

sites provided information describing their furnaces. This information further helped distinguish

between the different series of models.

The Department used a similar process to select basic models for condensing

non-weatherized gas furnaces. Model characteristics included single-stage furnaces not intended

for mobile homes. Since many condensing gas furnaces series are multi-position (upflow,

horizontal, and downflow), DOE included upflow, horizontal, and downflow models. The

Department gleaned this information from the GAMA database. To further refine the selection

criteria, DOE used product literature to select models without variable speed blower motors.

The Department selected similar models that had the same capacity and nominal airflow

(cfm). Most of the furnaces fit into four maximum nominal airflow sizes: 800 cfm (two-ton),

1200 cfm (three-ton), 1600 cfm (four-ton), and 2000 cfm (five-ton).

In terms of input capacity, most models fit into 12 input capacity bins. Some models did

not exactly match the bins, but had similar enough values to be considered in the same bin. For

example, 40 KBtu/h and 45 KBtu/h models are grouped together into a single 45 KBtu/h bin. 

The 4 nominal airflow sizes and 12 input capacities were combined into bins. Only 26 of these

bins are used in the analysis. Some combinations of nominal airflow size and input capacity are

not manufactured. 

Each of the 26 bins has at least two models, with the exception of two-ton, 50 KBtu/h

non-condensing bin, 45 KBtu/h, two-ton condensing bin, and four-ton 115, 120, and 125 KBtu/h

condensing bins. Finally, the 150 KBtu/h, five-ton bin was not selected, since there are very few

condensing models are over 125 KBtu/h and none that are close to 150 KBtu/h. 
7.3-2

The 12 different input capacities from 45 KBtu/h to 140 KBtu/h give a good range to

match different home sizes. 

Figure 7.3.1 shows the number of models by input capacity for non-weatherized gas

furnaces.

0

500

1000

1500

2000

2500

3000

2030405060708090

100110120130140150160

Input Capacity (kBtu/h)

Count

Figure 7.3.1 Number of Non-Weatherized Furnace Models by Input

Capacity 

Tables 7.3A.1 through 7.3B.16 contain tables of model numbers and specifications for

the non-condensing and condensing basic model non-weatherized gas furnaces the Department

used for the LCC analysis.
Table 7.3A.1 Models and Manufacturers of Non-Condensing Basic Model NonWeatherized Gas furnaces

45 50 60 70 75 80 90 100 115 

C - 58RAV050-08 L - G23Q2-50-** L - 80UHG2-60A-**

C - 58WAV045-08 TR - TUD060C924K*

L - 80UHG2-45A-** TX - ABA060NH2R

L - G40UH-24A-045-*

N - G6RA045*-08A

N - L1RA045*08A

TR - TUD040C924K*

TX - ABA040NH2R

AM - GUID045**30 AR - G1N80AT050D12A L - 80UHG3-60A-** AM - GUID070**30 AR - G1N80AT075D12A TR - TUD080C936K* AM - GUID090**30 L - G23Q3-100-**

C - 58RAV050-12 C - 58EFB050-12 N - G6RA060*-12A C - 58RAV070-12 C - 58EFB075-12 TX - ABA080NH3R C - 58RAV095-12 G - GMP100-3

C - 58WAV045-12 D - MPGA050B3* TR - TUD060C936K* C - 58WAV070-12 D - MPGA075B3* Y - P4HUA12N06401 G - GMT090-3 R - RGPJ-10NAMER

G - GMP050-3 I - NTG3050FB*** TX - ABA060NH3R G - GMT070-3 G - GMP075-3 L - G40UH-36B-090-* TR - TUD100C936K*

G - GMT045-3 L - G23Q3-50-** Y - P4HUA12N04801 L - G40UH-36A-070-* I - NTG3075FB*** N - L1RA090*12B TX - ABA100NH3R

TR - TUD040C930K* N - L1RA054*12A N - G6RA072*-12A L - 80UHG3-75A-** Y - P4HUB12N08001

TX - ABA040NH3R R - RGPJ-05NAUER N - L1RA072*12A L - G23Q2/3-75-**

Y - P4HUA12N03201 Y - G8C05012MUB11* R - RGPJ-07NAUER

Y - G8C07512MUB11*

AM - GUID070**40 AR - G1N80AT075D16B TR - TUD080C948K* C - 58RAV095-16 C - 58EFB100-16 Y - P4HUC16N09201 L - 80UH

G - GMT070-4 C - 58EFB075-16 TX - ABA080NH4R C - 58WAV091-16 D - MPGA100B4* C - 58RAV115-16 N - G6R

N - G6RA072*-16B D - MPGA075B4* Y - P4HUB16N06401 G - GMT090-4 G - GMP100-4 C - 58WAV111-16 TX - AB

N - L1RA072*16B G - GMP075-4 L - G40UH-48B-090-* I - NTG3100GF*** L - G40UH-48C-110-* 

I - NTG3075HF*** N - L1RA090*16B L - 80UHG3/4-100A-** N - L1RA108*16B 

L - 80UHG4-75A-** L - G23Q3/4-100-**

R - RGPJ-07NAMGR R - RGPJ-10NBRGR

Y - G8C07516MUC11* TR - TUD100C948K*

TX - ABA100NH4R

Y - G8C10016MUC11*

Y - P4HUB16N08001

AM - GUID090**50 AR - G1N80AT100D20C AM - GUIC115**50 L - 80UH

G - GMT090-5 C - 58EFB100-20 C - 58RAV115-20 N - G6R

D - MPGA100B5* C - 58WAV111-20 TR - TUD

G - GMP100-5 G - GMT115-5 TX - AB

I - NTG3100KF*** L - G40UH-60C-110-* 

L - 80UHG4/5-100A-** N - L1RA108*20C 

L - G23Q4/5-100-** Y - P4HUC20N09201 N - G6RA096*-20C 

R - RGPJ-10NBRJR 

TR - TUD100C960K* 

TX - ABA100NH5R 

Y - G8C10020MUD11*

Y - P4HUC20N08001

Manufacturer Key:AM = Amana D = Ducane L = Lennox Industries TR = TraneAR = Armstrong G = Goodman N = Nordyne TX = Texas FurnaceC = Carrier Corporation I = International Comfort Products R = Rheem Y = Yorksizes not used as virtual models

Input Capacity (kBTU/h)

Maximum Airflow 

( at 0.5" Static Pressure )

800 CFM

(2 tons)

1200 CFM

(3 tons)

1600 CFM

(4 tons)

2000 CFM

(5 tons)

 7.3-

3
Table 7.3A.2 Values of Input Capacity (kBtu/h) for Non-Condensing Basic Model NonWeatherized Gas furnaces

45 50 60 70 75 80 90 100 115 46 50 60

44 6045 60444545404046 50 60 69 75 80 92 10046 50 60 69 75 80 92 10044 50 60 66 75 80 90 10045 50 60 70 75 88 10045 50 57 66 75 90 10040 54 72 75 100

40 50 72 7540 50 75

75

69 75 80 92 100 115 70 75 80 88 100 115 72 75.1 80 90 100 110 72 75 88 100 110 

75 90 100 108 75 100

75 10075 100

100100100

92 100 115 90 100 115 

100 110 100 115 100 110 100 108 100 115 

96 

100 100 100 100100

sizes not used as virtual models

Input Capacity (kBTU/h)

Maximum Airflow 

( at 0.5" Static Pressure )

800 CFM

(2 tons)

1200 CFM

(3 tons)

1600 CFM

(4 tons)

2000 CFM

(5 tons)

7.3-4
Table 7.3A.3 Values of Output Capacity (kBtu/h) for Non-Condensing Basic Model NonWeatherized Gas furnaces

45 50 60 70 75 80 90 100 115 37 40 48

35 4736 49353636323337 40 48 55 60 63 74 8037 40 48 56 61 65 74 8035 40 47 53 61 64 72 8036 40 49 56 60 71 7936 40 46 53 59 72 8132 42 58 60 80

33 40 57 6132 40 61

60

55 60 64 75 81 92 56 61 65 71 81 93 59 61 64 72 80 89 58 60 71 80 87 

60 72 80 86 60 8061 8160 79

818080

74 80 92 72 81 93 

81 89 80 92 80 88 80 86 81 92 78 81 79 81 8080

sizes not used as virtual models

Input Capacity (kBTU/h)

Maximum Airflow 

( at 0.5" Static Pressure )

800 CFM

(2 tons)

1200 CFM

(3 tons)

1600 CFM

(4 tons)

2000 CFM

(5 tons)

7.3-5
Table 7.3A.4 Values of Maximum CFM @ 0.5 in.w.c. for Non-Condensing Basic Model NonWeatherized Gas furnaces

45 50 60 70 75 80 90 100 115 

895 1030 990

880 901990 850910870870910805

1200 1165 1210 1290 1143 1296 1380 13301160 1200 1210 1195 1280 1230 1255 14501250 1235 1236 1195 1235 1330 1400 12551260 1163 1260 1165 1350 1300 13631438 1320 1330 1215 1163 1280 12501092 1110 1210 1210 1465

1265 1165 1210 13001330 1211, 1220 1140

1211, 1220

1450 1540 1710 1580 1615 1780 11518 1625 1645 1740 1845 1595 11660 1845 1795 1532 1650 1575 11610 1600 1600 1502 1665 

1599 1600 1600 1600 1600 16351585 1845

1608, 1569 1669

1580

1608, 1569

1770

1975 2042 1985 21875 1990 1950 2

2270 2225, 2170, 2365 22020 1988 12005 1980, 2115 2260 1930 2195 2130, 2200 2150 2060 2001 1950 

2013, 17332130, 2200

sizes not used as virtual models

Input Capacity (kBTU/h)

Maximum Airflow 

( at 0.5" Static Pressure )

800 CFM

(2 tons)

1200 CFM

(3 tons)

1600 CFM

(4 tons)

2000 CFM

(5 tons)

7.3-6
Table 7.3A.5 Values of Low CFM @ 0.5 in.w.c. for Non-Condensing Basic Model NonWeatherized Gas furnaces

45 50 60 70 75 80 90 100 115 

560 645 540

605 505540 560610570690507550575 713 720 700 677 869 690 910870 805 730 890 1040 620 830 920875 750 848 905 750 620 628 960785 608 600 605 785 830 864669 775 620 705 608 930 650789 720 730 720 920615 585 730 735620 811, 845 880

811, 845

975 986 758 1075 1220 1265 

1006 1320 990 1210 1315 1150 11140 1315 1205 1113 1350 1180 11410 1250 1195 704 1120 

1318 1340 840 1340 

840 1100

1135 1195

1052, 1111 1164

990

1052, 1111

1285

1140 892 1210 11338 1330 1400 1

1270 1495 1

960 1258 1

1167 1605, 1610 1410 1580 1390 1585, 1630 1300 1510 1367 1135 

1407, 12241585, 1630

sizes not used as virtual models

Input Capacity (kBTU/h)

Maximum Airflow 

( at 0.5" Static Pressure )

800 CFM

(2 tons)

1200 CFM

(3 tons)

1600 CFM

(4 tons)

2000 CFM

(5 tons)

7.3-7
Table 7.3A.6 Values of Blower Size (diam X width) for Non-Condensing Basic Model NonWeatherized Gas furnaces

45 50 60 70 75 80 90 100 115 

10 x 6 10 x 7 9 x 710 x 6 10 x 6

9 x 7 10 x 4

10 x 710 x 610 x 610 x 610 x 4

9 x 8 10 x 6 10 x 7 9 x 8 10 x 6 10 x 7 10 x 8 10 x 8

10 x 6 10 x 8 10 x 6 10 x 6 10 x 8 10 x 6 10 x 7 10 x 810 x 6 10 x 6 10 x 7 10 x 6 10 x 6 10 x 7 10 x 8 11 x 710 x 6 10 x 8 10 x 6 10 x 6 10 x 6 10 x 8 10 x 710 x 6 10 x 8 10 x 7 10 x 8 10 x 8 9 x 9 10 x 610 x 6 10 x 6 10 x 6 10 x 7 10 x 810 x 6 11 x 6 10 x 6 10 x 810 x 7 10 x 8 11 x 6

10 x 8

10 x 6 10 x 8 10 x 8 10 x 8 10 x 9 10 x 10 110 x 8 12 x 8 10 x 8 10 x 8 12 x 9 10 x 8 10 

10 x 10 12 x 9 11 x 8 10 x 8 10 x 8 10 x 8 110 x 10 10 x 8 10 x 10 10 x 10 10 x 10 

10 x 10 10 x 10 12 x 8 11 x 10 

12 x 8 10 x 811 x 7 11 x 10

10 x 10 10 x 8

10 x 8

10 x 1010 x 10

10 x 8 12 x 10 10 x 9 1

10 x 10 12 x 9 11 x 10 11 

12 x 12 11 x 10 11 11 x 10 10 x 10 10 x 11 x 10 11-1/2 x 10 

12 x 9 11 x 10 

11.5 x 9 11 x 10 

11 x 10 11 x 10 11 x 10 

10 x 4 (Dual) 10 x 6 (Dual)

11 x 10

sizes not used as virtual models

Input Capacity (kBTU/h)

Maximum Airflow 

( at 0.5" Static Pressure )

800 CFM

(2 tons)

1200 CFM

(3 tons)

1600 CFM

(4 tons)

2000 CFM

(5 tons)

7.3-8
Table 7.3A.7 Values of Motor Size (hp) for Non-Condensing Basic Model NonWeatherized Gas furnaces

45 50 60 70 75 80 90 100 115 

1/5 1/5 1/4

1/5 1/51/4 1/41/51/51/51/51/41/3 1/3 1/3 1/3 1/3 1/3 1/2 1/31/3 1/3 1/3 1/3 1/3 1/3 1/3 1/31/3 1/3 1/3 1/3 1/3 1/3 1/3 1/21/3 1/3 1/3 1/3 1/3 1/3 1/31/3 1/3 1/3 1/3 1/3 1/4 1/31/3 1/3 1/3 1/3 1/2

1/3 1/2 1/3 1/31/3 1/3 1/2

1/3

1/2 1/2 1/3 1/2 1/3 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 3/4 1/2 1/2 1/2 1/2 1/2 1/2 1/3 1/2 

1/2 1/2 1/2 1/2 1/2 1/21/2 1/21/2 1/2

1/21/21/2

1/2 3/4 3/4 1/2 3/4 3/4 

1/2 3/4 3/4 1/2 3/4 3/4 3/4 1/2 3/4 1 3/4 3/4 1/2 3/4 3/4

1

sizes not used as virtual models

Input Capacity (kBTU/h)

Maximum Airflow 

( at 0.5" Static Pressure )

800 CFM

(2 tons)

1200 CFM

(3 tons)

1600 CFM

(4 tons)

2000 CFM

(5 tons)

7.3-9
Table 7.3A.8 Number of Speed Taps for Non-Condensing Basic Model NonWeatherized Gas furnaces

45 50 60 70 75 80 90 100 115 

3 3 4

3 44 43324444444443433434444344343344434 4434444 344 3 34 3

44 344 3 3

3

44443333443443333423 444 

3 252 5 43 34 4

443

454334

343344 52 53 4 3 4 4 43

sizes not used as virtual models

Input Capacity (kBTU/h)

Maximum Airflow 

( at 0.5" Static Pressure )

800 CFM

(2 tons)

1200 CFM

(3 tons)

1600 CFM

(4 tons)

2000 CFM

(5 tons)

7.3-10
Table 7.3A.9 Values of Supply Air Outlet Area (sq.ft.) for Non-Condensing Basic Model NonWeatherized Gas furnaces

45 50 60 70 75 80 90 100 115 

1.67 1.84 2.03

1.66 1.802.03 1.701.811.751.751.801.702.10 NA 2.03 2.10 NA 2.21 2.66 2.511.67 1.73 1.75 1.67 1.73 1.70 2.11 1.901.66 1.63 1.80 1.66 1.63 1.84 2.38 2.451.49 1.80 1.70 1.91 1.49 2.21 2.211.91 1.85 1.84 1.81 1.80 2.50 2.101.80 1.75 1.75 2.03 2.261.70 1.88 1.75 1.851.84 2.22 2.45

2.22

2.10 NA 2.21 2.11 2.25 2.74 2.38 1.73 2.10 2.56 2.12 2.11 2.50 2.12 2.26 2.38 1.90 2.56 2.50 1.90 2.21 2.26 3.18 

2.26 2.50 2.51 2.50 2.03 2.512.45 3.022.71 2.69

2.102.712.26

2.66 NA 3.21 2.86 2.25 2.57 

2.62 3.02 2.32 2.86 2.26 3.18 2.51 2.88 2.51 2.74 2.88 3.02 2.69 2.49 3.192.74

sizes not used as virtual models

Input Capacity (kBTU/h)

Maximum Airflow 

( at 0.5" Static Pressure )

800 CFM

(2 tons)

1200 CFM

(3 tons)

1600 CFM

(4 tons)

2000 CFM

(5 tons)

7.3-11
Table 7.3A.10 Values of AFUE for Non-Condensing Basic Model NonWeatherized Gas furnaces

45 50 60 70 75 80 90 100 115 80 80 80

80 8080 80.280

80.5

8080

80.2

80 80 80 80 80 80 80 8080 80 81 80 80 80.2 80 8080 80 80 80 80 80 80 8080 80 80.2 80 80 80 8080 80 80 80 80 80 80.280 80 80 80 80

80.2 80 80 80

80 80 80

80

80 80 80 80 80 80 80 80 80.2 80 80 80 81 80 80 80 80 80 80 80 80 80 80 

80 80 80 80 80 80

80 8080 80

80.2

8080

80 80 80 80 80 80 

80 80 80 80 80 80 80 80 80 80 81 80 80 

80.2 

8080

sizes not used as virtual models

Input Capacity (kBTU/h)

Maximum Airflow 

( at 0.5" Static Pressure )

800 CFM

(2 tons)

1200 CFM

(3 tons)

1600 CFM

(4 tons)

2000 CFM

(5 tons)

7.3-12
Table 7.3A.11 Values of Eae (kWh/yr) for Non-Condensing Basic Model NonWeatherized Gas furnaces

45 50 60 70 75 80 90 100 115 

425 361 546

554 523413 475471365341349322466 390 610 533 570 957 724 686639 304 482 712 635 858 679 684659 308 719 687 578 854 494 941449 478 573 449 718 894 855335 390 847 607 777 715 862509 421 425 573 1136506 456 642 534510 451 934

665

585 575 934 845 760 1217 1559 940 1075 948 1052 747 500 1106 1137 595 814 876 1637 814 864 730 1079 

842 855 801 1018 659 660934 1165828 1135

1288

830

1139

701 745 1015 1600 1143 1160 

1116 1611 11006 701 1

924 1121 664 1069 947 1579 845 

1165 

963 

1111 

937

1488

sizes not used as virtual models

Input Capacity (kBTU/h)

Maximum Airflow 

( at 0.5" Static Pressure )

800 CFM

(2 tons)

1200 CFM

(3 tons)

1600 CFM

(4 tons)

2000 CFM

(5 tons)

7.3-13
Table 7.3A.12 Values of PE (W) for Non-Condensing Basic Model NonWeatherized Gas furnaces

45 50 60 70 75 80 90 100 115 88 95 60

93 7760 57

108

7568764878 88 60 72 93 77 80 10090 87 75 94 87 56 93 8094 87 71 91 87 73 75 6880 82 61 75 80 118 7975 95 73 103 96 75 7972 72 75 60 72

57 96 74 9575 65 74

70

77 89 78 105 87 80 75 87 55 90 87 99 75 87 72 75 80 100 75 80 115 80 116 

92 76 60 75 60 9573 6570 81

777073

80 72 75 75 87 98 

87 100 80 75 76 107 60 76 

100 79 

75 65 50 83 7075

sizes not used as virtual models

Input Capacity (kBTU/h)

Maximum Airflow 

( at 0.5" Static Pressure )

800 CFM

(2 tons)

1200 CFM

(3 tons)

1600 CFM

(4 tons)

2000 CFM

(5 tons)

7.3-14
Table 7.3A.13 Values of On-Delay Time (secs) for Non-Condensing Basic Model NonWeatherized Gas furnaces

45 50 60 70 75 80 90 100 115 45 45 45

45 4548 30453030453030 NA 45 30 NA 45 30 4545 30 30 45 30 30 45 3045 30 45 45 30 30 30 3030 30 30 30 30 45 4530 45 30 45 30 30 3045 30 30 45 30

30 30 30 4530 30 30

30

30 NA 45 45 30 30 30 30 30 45 30 45 30 30 30 30 30 45 30 30 45 30 45 

30 30 45 30 45 4530 3030 45

303030

30 NA 45 30 30 45 

30 45 30 30 30 45 45 30 45 30 30 30 45 30 3030

sizes not used as virtual models

Input Capacity (kBTU/h)

Maximum Airflow 

( at 0.5" Static Pressure )

800 CFM

(2 tons)

1200 CFM

(3 tons)

1600 CFM

(4 tons)

2000 CFM

(5 tons)

7.3-15
Table 7.3A.14 Values of Off-Delay Time (secs) for Non-Condensing Basic Model NonWeatherized Gas furnaces

45 50 60 70 75 80 90 100 115 

135 90 180

135 100180 140

90

120120100140

90 NA 180 90 NA 100 90 90

135 60 120 135 60 140 135 150135 120 100 135 120 60 NA 120150 140 140 NA 150 90 100

NA 90 60 90 140 120 140

100 120 120 180 60

140 120 120 90

60 180 120

180

90 NA 100 135 60 60 

NA 60 140 135 120 135 

120 120 60 NA 150 135 120 150 90 140 90 

140 120 180 120 180 90

120 120180 100

140180

60

90 NA 135 

NA 60 135 

120 135 150 60 140 90 180 120 

90 60 

120 120 100 140 180

60

sizes not used as virtual models

Input Capacity (kBTU/h)

Maximum Airflow 

( at 0.5" Static Pressure )

800 CFM

(2 tons)

1200 CFM

(3 tons)

1600 CFM

(4 tons)

2000 CFM

(5 tons)

7.3-16
Table 7.3A.15 Values of Pre-Purge Time (secs) for Non-Condensing Basic Model NonWeatherized Gas furnaces

45 50 60 70 75 80 90 100 115 15 15 15

15 NA15 NA153030

NANANA NA 15 NA NA NA NA 15

15 NA 30 15 NA NA 15 NA15 15 NA 15 15 NA NA 20

NA NA NA NA NA 15 NANA 15 NA 15 NA 30 NA

NA 30 30 15 NA

NA 20 30 15NA NA 20

NA

NA NA NA 15 NA NA NA NA NA 15 15 15 

30 15 NA NA NA 15 30 NA 15 NA 15 

NA 30 15 30 

15 15

20 20

NA NA

NANANA

NA NA 15 NA NA 15 

15 15 

NA NA NA 15 

15 30 15 NA 30 20 

NA NA NANA

sizes not used as virtual models

Input Capacity (kBTU/h)

Maximum Airflow 

( at 0.5" Static Pressure )

800 CFM

(2 tons)

1200 CFM

(3 tons)

1600 CFM

(4 tons)

2000 CFM

(5 tons)

7.3-17
Table 7.3A.16 Values of Post-Purge Time (secs) for Non-Condensing Basic Model NonWeatherized Gas furnaces

45 50 60 70 75 80 90 100 115 

5 5 5

5 NA5 55

3030

NA

5

15 NA 5 15 NA NA 15 5

5 5 30 5 5 5 5 NA5 NA NA 5 NA NA NA 5

NA NA 5 NA NA 5 NANA 5 NA 5 NA 30 5

NA 30 30 5 NA

5 5 30 5

NA NA 5

NA

15 NA NA 5 5 NA 

NA 5 5 5 NA 5 

30 NA NA NA NA 5 30 NA 5 NA 5 

NA 30 5 30 

5 5

5 5

NA NA

5

NANA

15 NA 5 

NA 5 5 

NA 5 NA NA NA 5 

5 30 5 NA 

30 

5 

NA 

5 

NANA

sizes not used as virtual models

Input Capacity (kBTU/h)

Maximum Airflow 

( at 0.5" Static Pressure )

800 CFM

(2 tons)

1200 CFM

(3 tons)

1600 CFM

(4 tons)

2000 CFM

(5 tons)

7.3-18
Table 7.3B.1 Models and Manufacturers of Condensing Basic Model NonWeatherized Gas furnaces

45 50 60 70 75 80 90 100 115 120 

C - 58MCA040-08 D - CMPB050U2* C - 58MCA060-08

N - FG6RC040*-08A L - 90UGFA2-50-**

TR - TDC040C924B* L - G26Q2-50-**TR - TUC040C924B*

AM - GCCA045*X30 AR - G1D90AH050D12A N - FG6RC060*-12A AM - GCCA070*X30 AR - G1D90AH075D14A C - 58MCA080-12 TX - CSA090NH3R AR - G1D90AH100D14B

AM - GUCA045*X30 AR - G1D91AU050D12B C - 58MCA060-12 AM - GUCA070*X30 AR - G1D91AU075D12B N - FG6RC080*-12B TX - VSA090NH3R D - CMPB100U3*

AR - G1D93AC045D12B D - CMPB050U3* G - GMNT060-3 AR - G1D93AC067D12B D - CMPB075U3* Y - P3DHB12N07501AR - G1D93AU045D12B I - N9MP1050B12** G - GMPN060-3 AR - G1D93AU067D12B I - N9MP1075B12** Y - P3URB12N07501

C - 58MCA040-12 L - 90UGFA3-50-** R - RGRJ-06(E,N)MAES TX - CSA072NH3R L - 90UGFA3-75-**

G - GMNT040-3 L - G26Q3-50-** R - RGTJ-06(E,N)MAES TX - VSA072NH3R L - G26Q3-75-**

G - GMPN040-3 L - GHR26Q2/3-50-** TR - TDC060C936B* L - GHR26Q3-75-**

N - FG6RC040*-12A TX - CSA054NH3R TR - TUC060C936B* R - RGRJ-07(E,N)MAES

R - RGRJ-04(E,N)MAES TX - VSA054NH3R Y - P3DHB12N05501 R - RGRJ-07(E,N)YBES

R - RGTJ-04(E,N)MAES Y - P3DHB12N05501 R - RGTJ-07(E,N)MAES

R - RGTJ-07(E,N)YBES

AM - GCCA070*X40 AR - G1D91AU075D16C C - 58MCA080-16 AR - G1D93AC090D16C AR - G1D91AU100D16C N - FG6RC120*-16C L - G2

AM - GUCA070*X40 L - G26Q4/5-75-** G - GMNT080-4 AR - G1D93AU090D16C C - 58MCA100-16 R - RGTJ-12(E,N)RAGS

AR - G1D93AC067D16C R - RGRJ-07(E,N)YBGS G - GMPN080-4 G - GCCA090*X40 D - CMPB100U4*

AR - G1D93AU067D16C R - RGTJ-07(E,N)YBGS I - N9MP1080F16** G - GUCA090*X40 G - GMNT100-4

TX - CSA072NH4R N - FG6RC080*-16B R - RGRJ-09(E,N)ZAGS G - GMPN100-4

TX - VSA072NH4R Y - P3DHC16N07501 R - RGTJ-09(E,N)ZAGS I - N9MP1100F14**

Y - P3URC16N07501 TX - CSA090NH4R L - 90UGFA3/4-100-**

TX - VSA090NH4R L - G26Q3/4-100-**

L - GHR26Q3/4-100-**

N - FG6RC100*-16B

R - RGRJ-10(E,N)ZAGS

R - RGRJ-10(E,N)ZAJS

R - RGTJ-10(E,N)ZAGS

R - RGTJ-10(E,N)ZAJS

TR - TDC100C948B*TR - TUC100C948B*

Y - P3URC14N09501

AR - G1D93AU090D20C AR - G1D90AH100D20B AM - GCCA115*X50 C - 58MCA120-20 AR - G1

AR - G1D93AC090D20C AR - G1D91AU100D20C AM - GUCA115*X50 G - GMNT120-5 AR - G1D

G - GCCA090*X50 C - 58MCA100-20 AR - G1D93AC112D20D G - GMPN120-5 D - CG - GUCA090*X50 I - N9MP1100J20** AR - G1D93AU112D20D L - GHR26Q4/5-120-** I - N9

R - RGRJ-09(E,N)ZAJS L - G26Q4/5-100-** N - FG6RC120*-20C L - 90U

R - RGTJ-09(E,N)ZAJS L - GHR26Q4/5-100-** R - RGRJ-12(E,N)RAJS L - G2

TR - TUC100C960B* R - RGTJ-12(E,N)RAJS TX - C

TR - TUX100C960C* TR - TDC120C960B* TX - V

TX - CSA108NH5R TR - TUC120C960B*

TX - VSA108NH5R Y - P3DHD20N11201

Y - P3DHC20N09501 Y - P3URD20N11201Y - P3URC20N09501

Manufacturer Key:AM = Amana D = Ducane L = Lennox Industries TR = TraneAR = Armstrong G = Goodman N = Nordyne TX = Texas FurnaceC = Carrier Corporation I = International Comfort Products R = Rheem Y = York

sizes not used as virtual models

Input Capacity (kBTU/h)

Maximum Airflow 

( at 0.5" Static Pressure )

800 CFM

(2 tons)

1200 CFM

(3 tons)

1600 CFM

(4 tons)

2000 CFM

(5 tons)

7.3-19
Table 7.3B.2 Values of Input Capacity (kBtu/h) for Condensing Basic Model NonWeatherized Gas furnaces

45 50 60 70 75 80 90 100 115 120 40 50 6040 5040 504046 50 60 69 75 80 90 10046 50 60 69 75 80 90 10045 50 60 68 75 8045 50 60 68 75 8040 50 60 72 7540 50 60 72 7540 50 60 7540 54 60 7545 54 60 7545 60 75

75

69 75 80 90 100 120 69 75 80 90 100 12068 75 80 92 10068 75 81 92 10072 80 90 10072 80 90 100

80 90 100

90 100

100100105105105105100100100

90 100 115 120 90 100 115 120 92 100 112.5 120 92 100 112.5 120 90 100 120 90 100 120 

100 120 100 120 108 120108 120100 120100

sizes not used as virtual models

Input Capacity (kBTU/h)

Maximum Airflow 

( at 0.5" Static Pressure )

800 CFM

(2 tons)

1200 CFM

(3 tons)

1600 CFM

(4 tons)

2000 CFM

(5 tons)

 7.3-20
Table 7.3B.3 Values of Output Capacity (kBtu/h) for Condensing Basic Model NonWeatherized Gas furnaces

45 50 60 70 75 80 90 100 115 120 37 46 5637 4638 463743 45 55 65 67 74 81 9043 45 56 64 68 74 82 9341 46 55 62 70 7341 44 54 62 69 7437 47 56 65 6936 47 56 66 7036 47 56 7037 48 56 7042 49 55 7041 55 69

70

63 68 74 83 91 110 63 71 74 83 93 11262 70 72 87 9362 70 73 86 9265 74 84 9266 75 84 91

76 81 91

82 93

929397979797939493

83 90 108 112 83 91 106 111 85 93 104 108 85 91 104 111 84 93 110 84 93 113 

93 112 93 112 97 11399 11193 11194

sizes not used as virtual models

Input Capacity (kBTU/h)

Maximum Airflow 

( at 0.5" Static Pressure )

800 CFM

(2 tons)

1200 CFM

(3 tons)

1600 CFM

(4 tons)

2000 CFM

(5 tons)

7.3-21
Table 7.3B.4 Values of Maximum CFM @ 0.5 in.w.c. for Condensing Basic Model NonWeatherized Gas furnaces

45 50 60 70 75 80 90 100 115 120 

895 900 900800 950807 950812

1195 1120 1100 1366 1260 1245 1316 13151196 1297 1200 1407 1207 1210 1316 14501170 1205 1135 1164 1205 14851297 1183 1050 1207 1148 12631215 1225 1100 1299 12001140 1225 1180 1299 1200

950 1200 1082 1300

1120 1140 1196 11101195 1140 1484 14401220 1484 1150

1370

1590 1759 1525 1815 1806 1570 1643 2075 1590 1806 1570 17001599 1625 1400 1581 17951759 1540 1575 1544 17151507 1550 1580 15501507 1780 1570 1317

1688 1683 1650

1683 1650

159016201540181015601820161417461433

1943 1885 1903 1965, 20001821 1943 1976 2125 1987 1930, 2130 1821 1910 2017 1978 1980 2080 1910 2105 1990 1850 2180 1900 

2165 2040 2165 1939 1807 22611807 20021984 20652026

sizes not used as virtual models

Input Capacity (kBTU/h)

Maximum Airflow 

( at 0.5" Static Pressure )

800 CFM

(2 tons)

1200 CFM

(3 tons)

1600 CFM

(4 tons)

2000 CFM

(5 tons)

7.3-22
Table 7.3B.5 Values of Low CFM @ 0.5 in.w.c. for Condensing Basic Model NonWeatherized Gas furnaces

45 50 60 70 75 80 90 100 115 120 

470 540 565565 625

NA 625NA

621 1120 710 859 1045 910 917 1055584 1297 840 745 800 630 917 1080653 1205 835 816 965 845868 1183 800 800 546 794830 1225 715 902 770825 1225 770 902 770810 1200 NA 1040720 1140 NA 750685 1140 842 1095690 715 750

1030

1047 952 995 956 892 1090 1012 1310 1325 892 1100 1260

775 1270 1250 1056 1290952 1195 617 1014 1285

1126 900 1120 13301126 1198 1060 528

1181 1120 1110

1120 1110

111010901130135010801360

NANA

1035

1504 1230 1288 1365 1304 1504 1188 1110 1284 1380 1304 1660 1115 1498 1475 1460 1375 1415 1250 1350 1480 1475 

NA 1475 NA NA 

1342 NA1342 13981464 14921461

sizes not used as virtual models

Input Capacity (kBTU/h)

Maximum Airflow 

( at 0.5" Static Pressure )

800 CFM

(2 tons)

1200 CFM

(3 tons)

1600 CFM

(4 tons)

2000 CFM

(5 tons)

7.3-23
Table 7.3B.6 Values of Blower Size (diam X width) for Condensing Basic Model NonWeatherized Gas furnaces

45 50 60 70 75 80 90 100 115 120 

10 x 6 10 x 6 10 x 610 x 6 10 x 710 x 7 10 x 7

9 x 7

11 x 6 12 x 6 10 x 6 11 x 7 12 x 6 10 x 7 10 x 8 12 x 611 x 6 10 x 8 10 x 7 11 x 7 10 x 8 10 x 8 10 x 8 10 x 910 x 8 10 x 6 10 x 6 10 x 8 10 x 6 11 x 810 x 8 11 x 8 10 x 6 10 x 8 11 x 8 11 x 810 x 7 10 x 8 11 x 7 10 x 8 10 x 810 x 6 10 x 8 11 x 7 10 x 8 10 x 810 x 6 10 x 8 10 x 8 10 x 810 x 6 10 x 6 10 x 7 11 x 711 x 7 10 x 6 11 x 8 12 x 711 x 7 11 x 8 11 x 7

12 x 7

11 x 9 12 X 10 11 x 8 12 X 10 12 X 10 10 x 111 x 9 11.5 x 9 10 x 8 12 X 10 11 x 8 11 x 1

12 X 10 12 x 7 10 x 8 11 x 9 12 x 912 X 10 12 x 7 11 x 10 11 x 9 10 x 10

10 x 4 (Dual) 10 x 10 12 x 11 10 x 1010 x 4 (Dual) 11 x 8 12 x 11 11 x 10

10 x 10 10 x 4 (Dual) 10 x 10

10 x 4 (Dual) 10 x 10

10 x 1010 x 1012 x 1112 x 1112 x 1112 x 1111 x 1010 x 10

11 x 8

12 X 10 12 x 9 11 x 10 11 x 112 X 10 12 X 10 11 x 10 11 x 1

11 x 9 11 x 10 12 X 10 10 x 6 (D11 x 9 11 x 10 12 X 10 11.5 x 

12 x 11 11.5 x 9 11 x 112 x 11 11.5 x 9 11 x 1

11 x 10 11 x 111 x 10 11 x 1

10 x 6 (Dual) 11 x 110 x 6 (Dual) 11 x 1

11 x 10 11 x 111 x 10

sizes not used as virtual models

Input Capacity (kBTU/h)

Maximum Airflow 

( at 0.5" Static Pressure )

800 CFM

(2 tons)

1200 CFM

(3 tons)

1600 CFM

(4 tons)

2000 CFM

(5 tons)

7.3-24
Table 7.3B.7 Values of Motor Size (hp) for Condensing Basic Model NonWeatherized Gas furnaces

45 50 60 70 75 80 90 100 115 120 

1/5 1/4 1/51/5 1/51/5 1/51/51/3 1/3 1/3 1/2 1/2 1/3 1/2 1/21/3 1/3 1/3 1/2 1/3 1/3 1/2 1/31/3 1/3 1/3 1/3 1/3 1/21/3 1/2 1/3 1/3 1/2 1/21/3 1/3 1/2 1/2 1/31/3 1/3 1/2 1/2 1/31/3 1/3 1/3 1/21/3 1/3 1/3 1/21/2 1/3 1/2 1/21/2 1/2 1/2

1/2

1/2 3/4 1/2 3/4 3/4 1/2 1/2 3/4 1/2 3/4 1/2 1/23/4 3/4 1/2 1/2 1/23/4 3/4 1/2 1/2 1/23/4 1/2 1/2 1/23/4 3/4 1/2 1/2

1/2 3/4 1/2

3/4 1/2

1/21/21/23/41/23/41/21/23/4

9/10 3/4 1/3 3/4 9/10 9/10 1/2 3/4 

1/3 3/4 9/10 3/4 3/4 3/4 9/10 3/4 3/4 3/4 3/4 3/4 3/4 3/4 

1/2 3/4 1/2 1/2 3/4 1/23/4 1

1 11

sizes not used as virtual models

Input Capacity (kBTU/h)

Maximum Airflow 

( at 0.5" Static Pressure )

800 CFM

(2 tons)

1200 CFM

(3 tons)

1600 CFM

(4 tons)

2000 CFM

(5 tons)

 7.3-25
Table 7.3B.8 Number of Speed Taps for Condensing Basic Model NonWeatherized Gas furnaces

45 50 60 70 75 80 90 100 115 120 

3333 34 3343343443444443434334334444434434434344444 4344 3443 3433

3

45455 445354 353343534434 4334 334

344

4 4

443333343

534355434353445435 435 3

4 34 34 44 33 33

sizes not used as virtual models

Input Capacity (kBTU/h)

Maximum Airflow 

( at 0.5" Static Pressure )

800 CFM

(2 tons)

1200 CFM

(3 tons)

1600 CFM

(4 tons)

2000 CFM

(5 tons)

7.3-26
Table 7.3B.9 Values of Supply Air Outlet Area (sq.ft.) for Condensing Basic Model NonWeatherized Gas furnaces

45 50 60 70 75 80 90 100 115 120 

2.09 1.51 2.091.75 1.852.11 1.852.211.75 1.92 1.75 1.75 1.92 2.09 2.10 2.372.10 2.24 2.09 2.10 2.24 2.50 2.10 1.972.06 1.51 1.70 2.06 1.51 1.972.24 1.80 1.50 2.24 1.80 2.262.09 1.85 2.27 2.10 1.851.70 1.85 2.29 2.10 1.851.50 1.58 2.11 1.581.75 2.10 2.21 2.272.27 2.10 1.97 2.272.29 1.97 2.29

2.78

2.26 2.72 2.09 2.53 2.72 2.88 2.66 2.51 2.18 2.72 2.56 3.262.53 2.76 1.92 2.26 1.972.72 2.78 2.26 2.66 2.662.49 2.50 2.76 2.342.49 2.44 2.78 2.26

2.74 2.49 2.51

2.49 2.51

2.192.502.762.762.782.782.572.692.74

3.19 2.37 2.78 3.02 2.53 2.72 3.22 3.13 2.78 2.56 2.95 2.76 3.22 2.73 3.19 2.19 2.76 2.51 2.88 2.78 2.19 3.24 

3.16 3.26 3.16 3.03 2.89 3.142.89 2.842.44 3.232.74

sizes not used as virtual models

Input Capacity (kBTU/h)

Maximum Airflow 

( at 0.5" Static Pressure )

800 CFM

(2 tons)

1200 CFM

(3 tons)

1600 CFM

(4 tons)

2000 CFM

(5 tons)

 7.3-27
Table 7.3B.10 Values of AFUE for Condensing Basic Model NonWeatherized Gas furnaces

45 50 60 70 75 80 90 100 115 120 92 92 9292 9091 929292 90 92.1 92 90 92 90 9092 91 92 92 91 92 91 9293 92 93 93 92 9193 90 93 93 90 9292 90 93 90 9093 92 92 91 9293 92 91 9292 90 92 9394 91 91 9292 91 92

92

92 91 92 93 91 92 92 92 93 93 92 9293 92 93 92 9293 92 90 92 9390 92 94 9391 91 92 90

94 90 90

91 92

909292929292919292

93 90 92 92 93 91 92 93 92 92 93 93 92 90 93 90 94 92 92 92 92 94 

92 92 92 91 90 9291 9191 9293

sizes not used as virtual models

Input Capacity (kBTU/h)

Maximum Airflow 

( at 0.5" Static Pressure )

800 CFM

(2 tons)

1200 CFM

(3 tons)

1600 CFM

(4 tons)

2000 CFM

(5 tons)

 7.3-28
Table 7.3B.11 Values of Eae (kWh/yr) for Condensing Basic Model NonWeatherized Gas furnaces

45 50 60 70 75 80 90 100 115 120 

325 384 419339 480326 464327512 828 835 690 755 525 985 804592 680 483 743 750 656 910 616660 615 467 850 701 822660 710 581 850 954 729474 528 490 920 537331 499 484 930 583438 510 534 748442 625 520 512412 695 674 788436 674 588

750

370 750 869 900 903 967 627 933 623 900 794 961850 788 609 883 920850 750 927 837 686812 774 848 872780 978 832 996

795 916 671

839 695

652987862862885885772900565

900 1006 418 1241 900 920 897 1130 909 1045 1150 1079 761 1036 1150 1136 848 870 967 832 949 961 

870 961 874 1107 909 1209

1089 16351037 11241073

sizes not used as virtual models

Input Capacity (kBTU/h)

Maximum Airflow 

( at 0.5" Static Pressure )

800 CFM

(2 tons)

1200 CFM

(3 tons)

1600 CFM

(4 tons)

2000 CFM

(5 tons)

7.3-29
Table 7.3B.12 Values of PE (W) for Condensing Basic Model NonWeatherized Gas furnaces

45 50 60 70 75 80 90 100 115 120 70 87 8090 10079 7878

133 82 90 117 77 78 89 81132 123 76 123 131 90 91 87123 87 90 123 87 82123 112 75 123 127 71

71 100 92 77 10090 100 110 79 7675 100 80 10090 74 84 100

109 77 76 93

89 76 110

81

115 127 80 133 133 69 123 79 90 133 82 118143 93 75 128 87143 81 125 129 90

77 75 99 7580 81 98 126

79 87 100

94 79

100

909797

101101

784874

146 79 133 88 146 143 144 90 125 80 147 75 124 13 147 100 

99 79 69 98 100 99 

53 118 55 80 

103 70103 78

73 7386

sizes not used as virtual models

Input Capacity (kBTU/h)

Maximum Airflow 

( at 0.5" Static Pressure )

800 CFM

(2 tons)

1200 CFM

(3 tons)

1600 CFM

(4 tons)

2000 CFM

(5 tons)

7.3-30
Table 7.3B.13 Values of Pre-Purge Time (secs) for Condensing Basic Model NonWeatherized Gas furnaces

45 50 60 70 75 80 90 100 115 120 15 NA 1530 NA

NA 15NANA NA 30 NA NA 15 NA NANA NA 15 NA NA 30 NA NANA NA 15 NA NA NANA 3 15 NA 3 NA

15 NA 30 NA NA15 15 30 NA 1515 15 NA 1530 NA NA 3030 NA NA 3030 NA 30

30

NA NA 15 NA NA 30 NA 15 15 NA 15 30NA 30 15 NA NANA 30 3 NA 15NA 30 30 15NA NA 30 3

NA NA NA

NA 15

153030303030

NANANA

NA NA NA 15 NA NA NA 15 NA 15 NA 15 NA 3 NA 15 

30 15 30 30 15 30 

NA 30 NA NA NA NANA NANA NANA

sizes not used as virtual models

Input Capacity (kBTU/h)

Maximum Airflow 

( at 0.5" Static Pressure )

800 CFM

(2 tons)

1200 CFM

(3 tons)

1600 CFM

(4 tons)

2000 CFM

(5 tons)

7.3-31
Table 7.3B.14 Values of Post-Purge Time (secs) for Condensing Basic Model NonWeatherized Gas furnaces

45 50 60 70 75 80 90 100 115 120 15 NA 1530 NA

NA 5NA

15 NA 30 15 NA 15 5 NA15 NA 15 15 NA 30 5 NA

NA NA NA NA NA NANA 30 NA NA 30 NA

15 NA 5 5 NA

NA 5 5 5 5NA 5 NA 5

30 5 NA 5

5 5 NA 55 NA 5

5

15 NA 15 NA NA 30 15 5 NA NA 15 5

NA 5 NA 15 NANA 5 30 15 NA

5 30 5 NA5 NA 5 30

NA 5 NA

5 5

5

30

5555

NANANA

NA NA 15 15 NA NA 15 NA 

15 15 NA NA 15 30 NA 5 

5 5 30 55 5

NA 5 NA NA 

5 NA5 NA

NA NANA

sizes not used as virtual models

Input Capacity (kBTU/h)

Maximum Airflow 

( at 0.5" Static Pressure )

800 CFM

(2 tons)

1200 CFM

(3 tons)

1600 CFM

(4 tons)

2000 CFM

(5 tons)

7.3-32
Table 7.3B.15 Values of On-Delay Time (secs) for Condensing Basic Model NonWeatherized Gas furnaces

45 50 60 70 75 80 90 100 115 120 60 NA 6030 45

NA 45NA

30 NA 30 30 NA 60 30 NA30 NA 60 30 NA 30 30 NA

NA NA 30 NA NA 30NA 30 30 NA 30 30

60 45 20 30 4530 45 20 30 4530 45 NA 4530 30 NA 2020 30 30 2020 30 20

20

30 NA 60 NA NA 30 30 45 30 NA 60 20

NA 20 30 30 NANA 20 30 30 30

30 30 20 3030 30 20 30

30 30 45

30 45

453020202020

NANA

30

NA NA 30 60 NA NA 30 30 

30 60 NA 30 30 30 NA 45 20 45 30 20 45 20 

NA 20 NA NA 

30 NA30 3030 3030

sizes not used as virtual models

Input Capacity (kBTU/h)

Maximum Airflow 

( at 0.5" Static Pressure )

800 CFM

(2 tons)

1200 CFM

(3 tons)

1600 CFM

(4 tons)

2000 CFM

(5 tons)

7.3-33
Table 7.3B.16 Values of Off-Delay Time (secs) for Condensing Basic Model NonWeatherized Gas furnaces

45 50 60 70 75 80 90 100 115 120 

135 NA 135120 60

NA 90NA

90 NA 120 90 NA 135 140 NA90 NA 135 90 NA 120 140 NA

NA NA 150 NA NA 60NA 140 150 NA 140 60

135 60 120 140 60150 90 120 140 90150 90 NA 90120 140 NA 120120 140 60 120120 60 120

120

90 NA 135 NA NA 120 90 90 150 NA 135 120

NA 120 150 90 NANA 120 140 90 150

140 120 120 150140 60 120 140

60 140 60

140 90

90

120120120120120

NANA

60

NA NA 90 135 NA NA 90 150 

90 135 NA 150 90 140 NA 90 

120 90 120 120 90 120 

NA 120 NA NA 

140 NA140 60

60 6060

sizes not used as virtual models

Input Capacity (kBTU/h)

Maximum Airflow 

( at 0.5" Static Pressure )

800 CFM

(2 tons)

1200 CFM

(3 tons)

1600 CFM

(4 tons)

2000 CFM

(5 tons)

7.3-34
7.3-35

REFERENCES

1. Gas Appliance Manufacturers Association, Consumer Directory of Certified Efficiency

Ratings for Heating and Water Heating Equipment Database, April 2002.

<http://www.gamanet.org/consumer/certification/wd042002/install/Gama_web.EXE>