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17UH-PRC002-EN
Digit 14 — Rooftop Fan Section
0 = None (Indoor Unit and Rooftop Duct
Furnace)
S = Special
Digit 15 — Miscellaneous Options —
All Units
0 = None
A = #409 Stainless Steel Burners
3
B = Orifices For Elevation Above 2000 Feet
(Specify Elevation)
S = Special
Propeller Fan Unit Heater
(Std., Hi-Effic. and Separated Combustion)
C = #409 Stainless Steel Draft Diverter
D = Summer-Winter Switch
E = Vertical Louvers
J = Totally Enclosed Motor
7 = OSHA Fan Guard
Centrifugal Fan Unit Heater
(Std., Hi-Effic. and Separated Combustion)
C = #409 Stainless Steel Draft Diverter
D = Summer-Winter Switch
E = Vertical Louvers
H = Duct Discharge Flange
J = Totally Enclosed Motor
Duct Furnace (Indoor) (Std. or Hi-Effic.)
C = #409 Stainless Steel Draft Diverter
D = Summer-Winter Switch
F = Horizontal Louvers
G = Horizontal and Vertical Louvers
K = Side Access Burner Drawer (Left Hand)*
L = Fan Time Delay Control
M = Side Access Burner Drawer (Right
Hand)*
Separated Combustion Indoor Duct Furnace
C = #409 Stainless Steel Draft Diverter
D = Summer-Winter Switch
F = Horizontal Louvers
G = Horizontal and Vertical Louvers
Tubular Heat Exchanger, Propeller Type
J = Totally Enclosed Motor
7 = OSHA Fan Guard
Model
Number
Description
Indoor Gas Heating Units
G P N D 003 A A F 1 0 0 0 0 +
1 2 3 4 5,6,7 8 9 10 11 12 13 14 15
Digit 1 — Gas Heating Equipment
Digit 2 — Product Type
P = Propeller Fan Unit Heater
B = High Efficiency Centrifugal Fan
Unit Heater
C = Centrifugal Fan Unit Heater
D = Indoor Duct Furnace
L = High Efficiency Indoor Duct Furnace
H = High Efficiency Propeller Fan Unit Heater
A = Separated Combustion Propeller Fan
Unit Heater
K = Separated Combustion Centrifugal Fan
Unit Heater
M = Separated Combustion Indoor Duct
Furnace
T = Tubular Heat Exchanger - Propeller Type
S = Special
Digit 3 — Fuel
N = Natural Gas
P = LP Gas (Propane)
S = Special
Digit 4 — Development Sequence
D = Fourth Generation
Digits 5-7 — Input Capacity
Single Furnace
003 = 30 MBh R03 = 30 MBh
004 = 45 MBh R04 = 45 MBh
006 = 60 MBh R06 = 60 MBh
007 = 75 MBh R07 = 75 MBh
009 = 90 MBh R09 = 90 MBh
010 = 100 MBh 022 = 225 MBh
012 = 125 MBh 025 = 250 MBh
015 = 150 MBh 030 = 300 MBh
017 = 175 MBh 035 = 350 MBh
020 = 200 MBh 040 = 400 MBh
*Residential - Tubular Only
Digit 8 — Main Power Supply
A = 115/60/1 E = 460/60/3
B = 230/60/1 F = 575/60/3
C = 208/60/3 S = Special
D = 230/60/3
Notes:
1. All units are AGA approved. For CGA approved units,
contact Clarksville Technical Support.
2. Available on the tubular sizes 100-400 only.
3. Not available for tubular.
*The left or right hand side of the side access burner
drawer, options K & M, is determined by facing the air
outlet side of the duct furnace.
Digit 9 — Gas Control Option
A = Single-Stage, Standing Pilot
D = Single-Stage, Intermittent Pilot Ignition
E = Two-Stage, Intermittent Pilot Ignition
F = Hydraulic Modulating, Intermittent Pilot
Ignition (60-100°F)
G = Hydraulic Modulating with Bypass,
Intermittent Pilot Ignition (60-100°F)
H = Electronic Modulating with Room
T-Stat, Intermittent Pilot Ignition
J = Electronic Modulating with Duct-Stat,
Intermittent Pilot Ignition
K = Single-Stage, Hot Surface Pilot Ignition
L = Electronic Modulating with External
4-20 mA Input
N = Electronic Modulating with External
0-10 VDC Input
P = Hydraulic Modulating, Intermittent Pilot
Ignition (75-150°F)
R = Hydraulic Modulating with Bypass,
Intermittent Pilot Ignition (75-150°F)
S = Special
Digit 10 — Design Sequence
F = Sixth Design
Digit 11 — Heat Exchanger Material
1 = Aluminized Steel
2 = #409 Stainless Steel
2
3 = #321 Stainless Steel
3
S = Special
Digit 12 — Rooftop Arrangements
0 = None (Indoor Unit)
S = Special
Digit 13 — Rooftop Heating Unit
Motor Selection
0 = None (Indoor Unit and Rooftop Duct
Furnace
S = Special