## 7

- G

- i APPENDIX 7

- G. REDUCED SET OF FURNA CE FAN MODELS AND
CHARACTERISTICS

TABLE OF CO NTENTS

7

- G.1 INTRODUCTION

................................ ................................ ................................ . 7

- G

- 1 7

- G.2 REDUCED SET OF FURNA CE FAN MODELS DATABA SE

.......................... 7

- G

- 1 7

- G.2.1 Purpose

................................ ................................ ................................ ................... 7

- G

- 1 7

- G.2.2 Data Set Development Backgrou nd

................................ ................................ ....... 7

- G

- 1 7

- G.3 DECODING OF MANUFACT URER MODEL NUMBERS

............................... 7

- G

- 2 7

- G.4 REDUCED FURNACE MODE L CHARACTERISTICS

................................ .... 7

- G

- 6

LIST OF TABLES

Table 7

- G.3.1 Example Furnace Model Number Description

................................ .... 7

- G

- 2 Table 7

- G.3.2 Amana Model Number Description

................................ ..................... 7

- G

- 2 Table 7

- G.3.3 Armstrong Model Number Description

................................ ............... 7

- G

- 3 Table 7

- G.3.4 Carrier Model Number Description

................................ ..................... 7

- G

- 3 Table 7

- G.3.5 Ducane Model Number Description

................................ .................... 7

- G

- 3 Table 7

- G.3.6 ECR International (Olsen) Model Number Description

...................... 7

- G

- 3 Table 7

- G.3.7 Goodman Model Number Description

................................ ................. 7

- G

- 4 Table 7

- G.3.8 ICP Model Number Description

................................ .......................... 7

- G

- 4 Table 7

- G.3.9 Lennox Model Number Description

................................ .................... 7

- G

- 4 Table 7

- G.3.10 Nordyne Model Number Description

................................ .................. 7

- G

- 4 Table 7

- G.3.11 Rheem Non

- Condensing Model Number Description

......................... 7

- G

- 5 Table 7

- G.3.12 Rheem Condensing Model Number D escription

................................ . 7

- G

- 5 Table 7

- G.3.13 Texas Furnace Model Number Description

................................ ......... 7

- G

- 5 Table 7

- G.3.14 Thermo

- Pride Furnace Model Number Description

............................ 7

- G

- 5 Table 7

- G.3.15 Trane/American Standard Model Number Description

....................... 7

- G

- 6 Table 7

- G.3.16 York Furnace Mo del Number Description

................................ .......... 7

- G

- 6

LIST OF FIGURES

Figure 7

- G.4.1 Number of Non

- Weatherized Gas Furnace Models by Input Capacity

................................ ................................ ............................... 7

- G

- 7

## 7

- G

- 1 APPENDIX 7

- G. REDUCED SET OF FURNA CE FAN MODELS AND
CHARACTERISTICS

7

- G.1 IN TRODUCTION

This appendix presents the approach for developing a reduced set of furnace fan models and the resulting furnace characteristics

.

7

- G.2 REDUCED SET OF FURNA CE FAN MODELS DATABASE

7

- G.2.1 Purpose

The Reduced Set of Furnace Models was developed to identify actual unique furnace models which represent units with different design characteristics and to expand the AHRI directory data for each unique furnace model by adding information provided in the

m anufacturers' product literature. One application of the reduced set was to develop furnace fan

curves which were used in the life

- cycle cost (LCC) analysis.

The March 20 12 AHRI Directory 1 

## lists more than 6, 000 non

- weatheriz ed gas furnace models. Many models represent essentially identical units which differ only in brand name. The database of furnace models described here (referred to as the reduced set of furnace models or simply the reduced set) represents non

- repetitive furnace models only. After examining the AHRI Directory database, the Department determined that about 1, 450 models may be considered sufficiently different to be listed as unique models. Similar approach was used to develop the reduced set of other furn ace fan product classes. See the LCC spreadsheet (“Models Directory” worksheet) for a complete listing of models used for each furnace fan product class.

Once the reduced set was identified, the Department examined the manufacturer’s product liter ature and added additional data including the airflow at different static pressures, power for the blower, blower motor type, blower wheel dimensions, furnace dimensions, low fire heating input and output capacity for modulating furnaces, and delay times

.

7

- G.2.2 Data Set Development Background

In 2002, DOE began to develop a database of product specifications (such as different design characteristics) for residential furnaces currently sold in the U.S. A preliminary version of the reduced set database was comp leted at the end of 2002 and released with the ANOPR. 2 

## In 2005, during the NOPR phase of the rulemaking, an update version of the database was published 3 

## and a final version was published in 2007. 4 

## This current version updates the past version of the data as well as adds additional furnace fan product classes

.

## 7

- G

- 2 7

- G.3 DECODING OF MANUFACT URER MODEL NUMBERS

The Department used manufacturer model numbers, among other furnace characteristics, to determine nominal airflow capacity. Manufacture rs often code furnace specifications into their model numbers. This appendix illuminates the coding of different manufacturer model numbers.

An Amana model number is shown as an example of how manufacturers code f ur nace characteristics. Table 7

- G.3.1 shows the Amana model number “GUID045CA30.” The first row of the table shows the model number broken into eight cells. The fifth, sixth, and seventh characters of the model number are groupe d together. The tenth and eleventh characters are grouped together. The second row gives an explanation for each character or group of characters. Row three deciphers the character or group. Deciphering the model number shows that this Amana furnace mo del is an upflow gas furnace with induced draft, a nominal output of 45K Btuh, that it is not NO x 

## certified, and has a nominal airflow capability appropriate for a three

- ton air conditioner.

Table 7

- G.3.1 Example Furnace Model Number Description

G U I D 045 C A 30

Product Type Supply Type Furnace Type Model Features Nominal Input (kBtu/h) Design Series Additional Features Nominal AC Size

G: Gas Furnace U: Upflow I: Induced Draft (80%) D: Air Command 80 SV (Category I Venting) 045 C: Third Series A: Standard Unit (not NOx certified) 30: 3 Tons



## All manufacturers have similar coding schemes for their furnace model numbers

. Table 7

- G.3.2 to Table 7

- G.3.16 show model numbers from the major manufacturers and an explanation of their conventions.

Table 7

- G.3.2 Amana Model Number Description

A M S 8 070 3 A N A

Brand Air Flow Direction Description AFUE Nominal Input (kBtu/h) Max CFM @0.5" ESP Cabinet Width NOx Revision

A = Amana B = Distinctions G = Goodman M: Upflow/ Horizontal D: Dedicated Downflow C: Downflow/ Horizontal H: Hi Air Flow S: Single

Stage/ Multi

Speed V:Two

Stage/ Variable

Speed 8: 80% 9: 90% 045 070 090 115 140 3:1,200 4:1,600 5:2,000 A:14" B:17.5" C:21" D:24.5" N:Natural Gas X:Low NOx A: Initial Revision B: First Revision C: Second Revision

## 7

- G

- 3 Table 7

- G.3.3 Armstrong Model Number Description

G 1N 80 A H 100 D 20 B 1A

Product Family Furnace Type Nominal AFUE Series Configuration Heating Input x

1000 (btu/h) Motor Type Nominal Maximum CFM x 100 Cabinet Width Low NOx Model Revisio

n

G=Gas Furnace 1N = Single

- Stage Heat, Non

- Direct Vent 1D = Single

- Stage Heat, Direct Vent 2D = Two

- Stage Heat, Direct Vent 80 AFUE 93 AFUE 95 AFUE A Series B Series H = Horizontal U = Upflow T = Upflow/ Horizontal R = Downflow/ Horixontal 50 75 100 125 150 D = Direct Drive 12=1200 14=1400 16=1600 20=2000 A = 13

- 1/2 B = 17 C = 20

- 1/2 L = Low NOx Model 1A



## Table 7

- G.3.4 Carrier Model Number Description

58DLA 045 100 08

Furnace Series Configuration/Type Input Capacity (kBtu/h) Series Number Nominal Cooling Size (Airflow) (400 CFM per 12,000 btu/h)

58DLA = Deluxe 4

- Way Multipoise 58DLX = Low NOx version 58CVA = Variable Speed 4

- Way Multipoise 58CVX = Low NOx version 58CTA = Two

- Stage 4

- Way Multipoise 58CTX = Low NOx version 045 = 44,000 070 = 66,000 090 = 88,000 110 = 110,000 135 = 132,000 155 = 154,000 100 Series 08 = 800 CFM 12 = 1200 CFM 14 = 1400 CFM 16 = 1600 CFM 20 = 2000 CFM 22 = 2200 CFM



## Table 7

- G.3.5 Ducane Model Number Description

MGPA 075 B 4 B

Furnace Family Input Capacity (kBtu/h) Series Nominal Cooling Capacity

(tons) Revision

MGPA = Fits

- All 80 AFUE FPBB = Horizontal 80 AFUE DPGB = Downflow 80 AFUE CMPB = Fits

- All 92 AFUE (Downflow) CMPU = Fits

- All 92 AFUE (Upflow) CMPV = Fits

- All 92 AFUE variable speed 050 075 100 125 A B C U 3 4 5 B



## Table 7

- G.3.6 ECR International (Olsen) Model Number Description

GTM 50

Furnace Family Input Capacity (kBtu/h)

GTM = Med Efficiency Gas Furnace (80% AFUE) GTH = High Efficiency Gas Furnace (95% AFUE) 50 70 85 100

## 7

- G

- 4 Table 7

- G.3.7 Goodman Model Number Description

GMNT 040 3

Unit Type Input Capacity (Btu/h) Nominal Cooling Capacity (tons)

GMNT = Multi

- position gas furnace 040 = 40,000 Btu/h 060 = 60,000 Btu/h 080 = 80,000 Btu/h 100 = 100,000 Btu/h 120 = 120,000 Btu/h 3 = 3 tons 4 = 4 tons 5 = 5 tons



## Table 7

- G.3.8 ICP Model Number Description

N 9 MP 2 075 F 12 A #

Brand Identifier Model Identifier Installation Configuration Major Design Feature Heating Input (btu/h) Cabinet Width (inches) Cooling Airflow Marketing Digit Engineering Rev.

N = Non

- Brand Specific (Generic) T = Tempstar 8 = Non

Condensing 9 = Condensing MP = Multiposition UP = Upflow DN = Downflow UH = Uplfow/ Horizontal HZ = Horizontal DH = Downflow/ Horizontal 1 = One pipe 2 = Two pipe D = 1 or 1 pipe L = Low Nox N = Single

- Stage P = PVC Vent T = Two

- Stage V = Variable Speed 050 075 080 100 125 B = 15.5" J = 22.8" F = 19.1" L = 24.5" 08 = 800 12 = 1200 14 = 1400 16 = 1600 20 = 2000 Denotes minor change Denotes minor change



## Table 7

- G.3.9 Lennox Model Number Description

G 40 UH 24 A 045 X

Unit Type Series Configuration Nominal Add

On Cooling

Capacity Cabinet Width Heating Input (btu/h) CA emission requirements

G = Gas Furnace 40 = Merit Series 80% 50 = Elite 80% 60 = Two

- Stage 80% UH = Upflow/Horizontal DF = Downflow/Horizontal 24 = 2 Tons 36 = 3 Tons 48 = 4 Tons 60 = 5 Tons A = 14

- 1/2 B = 17

- 1/2 C = 21 D = 24

- 1/2 045 = 44,000 070 = 66,000 090 = 88,000 110 = 110,000 135 = 132,000 155 = 154,000 X = meets California NOx standards



## Table 7

- G.3.10 Nordyne Model Number Description

G 6 R A 144 C 20 C

Furnace Fuel Type Design Series Furnace Type Furnace Configuration Heating Input (btu/h) Certification Type Nominal CFM Cabinet Width

G, FG, KG, L = Gas 6 or 1 R = Residential T = Residential, Two

Stage A = Upflow C = Upflow, Condensing K = Downflow L = Downflow, condensing 045 = 45,000 060 = 60,000 072 = 72,000 096 = 96,000 120 = 120,000 144 = 144,000 C = US/Canada N = NOx US 08 = 800 CFM 12 = 1200 CFM V = Variable Speed A = 14

- 1/4 B = 19

- 3/4 C = 22

- 1/2

## 7

- G

- 5 Table 7

- G.3.11 1 Rheem Non

- Condensing Model Number Description

R G P J 07 E A U E R

Brand Identifier Fuel Type Non

Condensing Furnace Type Design Series Heating Input ( kbtu/h) Ignition Type Variations Blower Size Cooling Designation

(CFM) Natural Gas Fuel Code

R = Rheem U = Ruud W = Weatherking G = Natural Gas D = Upflow L = Downflow P = Upflow/ Horizontal J = Acclaim A = Acclaim II K = Criterion II Plus 2 N = Classic Series L = Criterion II Plus 2 LXE 04 = 45 05 = 50 06 = 67.5 07 = 75 10 = 100 12 = 125 15 = 150 E = Electric Ignition N = Electric Ignition

- NOx Model A = Standard B= Wide Cabinet U = 11x6 M = 11x7 R = 11x10 S = 500

- 1200 E = 1100

- 1300 G = 1450

- 1750 J = 1900

- 2075 R = US A = Canada



## Table 7

- G.3.12 Rheem Condensing Model Number Description

R G T J 07 E M A E S

Brand Identifier Fuel Type Condensing Furnace Type Design Series Heating Input (kbtu/h) Ignition Type Blower Size Variations Cooling Designation

(CFM) Natural Gas Fuel Code

R = Rheem U = Ruud W = Weatherking G = Natural Gas T = Downflow/ Horizontal R = Upflow M = Upflow Modulating J = Classic 90 A = Classic 90 Plus D = Classic 90 Plus Modulating 04 = 45 06 = 60 07 = 75 09 = 90 10 = 105 12 = 120 E = Electric Ignition N = Electric Ignition

- (Low NOx) M = 11x7 R = 11x10 Z = 12x11 Y = 12x7 A = Standard B= Wide Cabinet C = Single/Mult i Zone E = 1100

- 1300 G = 1500

- 1700 J = 1900

- 2100 K = 600

- 1200 M = 1200

- 2000 S = US B = Canada



## Table 7

- G.3.13 Texas Furnace Model Number Description

ABA 040 NH 3 R

Furnace Family Heating Input (kbtu/h) Series Nominal Cooling Capacity (tons) Version

ABA = 80 Plus CSA = 90 Plus (Downflow) VSA = 90 Plus (Upflow) 040 060 080 100 120 140 NH 2 3 4 5 6 R = Standard RX = Low Nox RH = High Altitude



## Table 7

- G.3.14 Thermo

- Pride Furnace Model Number Description

MHA 50 N

Furnace Family Heating Input (kbtu/h) Furnace Fuel Type

MHA1 = Comfort 80+% Mid

- Efficiency Gas Fired Furnace MHA = Comfort 80+% Mid

- Efficiency Gas Fired Furnace CHX1 or CDX1 = Premiere Series Two

- Stage Gas Fired Furnace CHB1 or CDB1 = 90+% High

- Efficiency Gas Fired Furnace 50 75 100 125 N = Natural Gas P = Propane

## 7

- G

- 6 Table 7

- G.3.15 Trane/American Standard Model Number Description

T U Y 080 R 9 V3 V 0

Brand Identifier Furnace Configuration Type Heating Input (Kbtu/h) Major Design Change Power Supply and Fuel Airflow Capacity for Cooling (400 CFM/Ton) Minor Design Change or Service Digit

T = Trane A = American Standard U = Upflow/ Horizontal D = Downflow/ Horizontal C = Condensing D = Induced Draft E = Electronic Ignition X = Direct Vent Condensing Y = Direct Vent Condensing Variable Speed 040 060 080 100 120 140 C = Single

- Stage R = Two

- Stage All other = Standard system 115 Volt/ Natural Gas 3 = 3 Tons V3 = 11⁄2

- 3 Tons, Va riable Speed Motor (ICM) V4 = 2

- 4 Tons, Variable Speed Motor (ICM) V5 = 3

- 5 Tons, Variable Speed Motor (ICM) H = Upflow/ Horizontal V = Variable Speed Motor 0



## Table 7

- G.3.16 York Furnace Model Number Description

P4 HU A 12 N 032 01

Series Furnace Configuration Cabinet Size Width Design Series Output Capacity (kbtu/h) Revision

P4 HU = Upflow Horizontal A = 14

- 1/2 B = 17

- 1/2 C = 21 D = 24

- 1/2 12 = 1200 CFM 16 = 1600 CFM 20 = 2000 CFM N L = Low NOx 032 048 064 080 100 115 130 01 = first revision 02 = second revision



## 7

- G.4 REDUCED FURNACE MODE L CHARACTERISTICS

Input capacity for furnaces and boilers is an essential component used in the LCC analysis. The basic methodology for obtaining the generic input capacities involves using the reduced set of models for each product class and then using a histogram of input capacities to pick the input capacities which are the most common. Figure 7

- G.4.1 shows t he number of non

weatherized gas furnace models by input capacity for non

- weatherized gas furnaces. A s imilar approach was used for other furnace fan product classes (See LCC spreadsheet “Furnace and AC Specs” worksheet for all the input capacity and AFUE distributions).

## 7

- G

- 7 Figure 7

- G.4.1 Number of N on - Weatherized Gas Furnace Models by Input Capacity 0 500 1000 1500 2000 2500 30002030405060708090100110120130140150160



## Input Capacity (kBtu/h)Count

## 7

- G

- 8 REFERENCES

1. AHRI
, AHRI Directory March 2012, 2012

. 2

. U.S. Department of Energy

- Office of Building Technologies, Technical Support Document: Energy Conservation Program for Consumer Products: Energy Conservation Standards for Residential Furnaces and Boilers

- ANOPR Version, 2003. U.S. Department of Energy. W ashington, DC. Report No. LBNL

- 53984. <http://www.eere.energy.gov/buildings/appliance_standards/residential/furnaces_boilers. html> 3

. U.S. Department of Energy

- Office of Energy Efficiency and Renewable Energy. Energy Conservation Program for Consumer Prod ucts, Technical Support Document: Energy Conservation Program for Consumer Products; Residential Furnaces and Boilers

- NOPR Version, 2005. Washington, D.C. <http://www.eere.energy.gov/buildings/appliance_standards/residential/furnaces_boilers. html> 4

. U.S . Department of Energy

- Office of Energy Efficiency and Renewable Energy. Energy Conservation Program for Consumer Products, Technical Support Document: Energy Conservation Program for Consumer Products; Residential Furnaces and Boilers

– Final Rule Versio n, 2007. Washington, D.C. <http://www.eere.energy.gov/buildings/appliance_standards/residential/furnaces_boilers. html>