### 7.2-i



# APPENDIX 7.2. DECODING OF MANUFACTURER MODEL NUMBERS

LIST OF TABLES

Table 7.2.1 Amana Furnace Model Number Description

...........................7.2-1 Table 7.2.2 Carrier Model Number Description

.................................7.2-1 Table 7.2.3 ICP Model Number Description

....................................7.2-2 Table 7.2.4 Goodman Model Number Description

...............................7.2-2 Table 7.2.5 Lennox Model Number Description

.................................7.2-2 Table 7.2.6 Armstrong Model Number Description

...............................7.2-2 Table 7.2.7 Trane/American Standard Model Number Description

...................7.2-3 Table 7.2.8 Rheem Non-Condensing Model Number Description

....................7.2-3 Table 7.2.9 Rheem Condensing Model Number Description

........................7.2-3 Table 7.2.10 York Furnace Model Number Description

............................7.2-4 Table 7.2.11 Nordyne Model Number Description

................................7.2-4

### 7.2-1



# APPENDIX 7.2. DECODING OF MANUFACTURER MODEL NUMBERS

The Department used manufacturer model numbers, among other furnace characteristics, to determine nominal airflow capacity. Manufacturers often code furnace specifications into their model numbers. This appendix illuminates the furnace specifications from manufacturer model numbers.
An Amana model number is as an example of how manufacturers code furnace characteristics. Table 7.2.1 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 grouped 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 model is an upflow gas furnace with induced draft, a nominal output of 45K Btuh, that it is not NOx

# certified, and has an airflow capability of three tons.

Table 7.2.1 Amana Furnace Model Number Description

G U I D 045 C A 30

Product Type Supply Type Furnace Type Model

Features Nominal

Input Design

Series Additional

Features Airflow

Capability

G: Gas Furnace U: Upflow I: Induced Draft (80%) D: Air

Command 80 SV (Category I Venting) 045: 45,000

Btuh C: Third

Series A:

Standard Unit (not NOx certified) 30: 3 Tons



# All manufacturers have similar coding schemes for their furnace model numbers. Tables 7.2.1- 7.2.11 show model numbers from the major manufacturers and an explanation of their conventions.

Table 7.2.2 Carrier Model Number Description

58WAV 045 150 08
Furnace Series Configuration/Type Input Capacity (btu/h) Series Number Nominal Cooling Size (Airflow) (400 CFM per 12,000 btu/h)
58WAV = High Efficiency Induced Combustion Upflow Furnace 045 = 44,000 070 = 66,000 091 = 88,000 111 = 110,000 136 = 132,000 155 = 154,000 08 = 800 CFM 12 = 1200 CFM 14 = 1400 CFM 16 = 1600 CFM 20 = 2000 CFM

### 7.2-2



# Table 7.2.3 ICP Model Number Description

N 9 MP 2 075 F 12 A #

Brand Identifier Model

Identifier Installation

Configuration Major Design Feature Heating

Input (mbtu/h) Cabinet

Width (inches) Cooling

Airflow Marketing

Digit Engineerin

g Rev.

N = NonBrand Specific (Generic) T = Tempstar 8 = NonCondensing 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 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 7.2.4 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 3 = 3 tons



# Table 7.2.5 Lennox Model Number Description

G 40 UH 24 A 045 X
Unit Type Series Configuration Nominal AddOn Cooling Capacity Cabinet

Width Heating Input

(btu/h) CA emission

requirements

G = Gas Furnace 40 = Merit Series 80%

50 = Elite 80% 60 = 2-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 7.2.6 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 Series

1N = Single Stage Heat, Non-Direct Vent 1D = Single Stage Heat, Direct Vent 2D = Two Stage Heat, Direct Vent H = Horizontal U = Upflow T = Upflow/ Horizontal R = Downflow/ Horixontal D = Direct Drive A = 13- 1/2 B = 17 C = 20- 1/2 L =

Low NOx Model

### 7.2-3



# Table 7.2.7 Trane/American Standard Model Number Description

T U Y 080 R 9 V3 V 0

Brand Identifier Furnace

Configuration Type Heating Input (mbtu/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 C = Single Stage R = Two-Stage All other = Standard system 115

Volt/ Natural Gas 3 = 3 Tons

V3 = 11⁄2-3 Tons, Variable 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



# Table 7.2.8 Rheem Non-Condensing Model Number Description

R G P J 07 E A U E R

Brand Identifier Fuel Type NonCondensing 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 = Acclaim II Plus 2 L = Acclaim 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 7.2.9 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/Mul ti Zone E = 1100-1300

G = 1500-1700 J = 1900-2100 K = 600-1200 M = 1200- 2000 S = US

B = Canada

### 7.2-4



# Table 7.2.10York Furnace Model Number Description

P4 HU A 12 N 032 01

Furnace Configuration Cabinet Size Width Design Series Output Capacity (btu/h)
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 032 =32,000



# Table 7.2.11 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, twostage 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



# The Department used this information along with product literature and installation manuals to develop a detailed database of furnace characteristics for models that are currently being sold. The database is available on the DOE website at: http://www.eere.energy.gov/buildings/appliance_standards/residential/furnaces_boilers.html.