
6 GUNE-SVX001A-EN
Model Number Description
Digit 1 — Gas Heating
Equipment
G = Gas Heating Equipment
Digit 2 — Product Type
U = Tubular Duct Furnace
Digit 3 — Fuel Type
N=Natural Gas
P = Propane Gas (LP)
Digit 4 — Developmental
Sequence
E = Current Developmental
Sequence
Digits 5, 6, 7 — Input Capacity
(MBh)
010 = 100
015 = 150
020= 200
025= 250
030= 300
035= 350
040= 400
Digit 8 — Main Power Supply
A = 115/60/1
B = 230/60/1
C = 208/60/3
D = 230/60/3
E = 460/60/3
F = 575/60/3
G = 208/60/1
Digit 9 — Gas Control Option
H = Electronic Modulating w/Room
Sensing
J = Electronic Modulating w/Duct
Thermostat
L = Electronic Modulation
w/External 4–20 mA Input
M = Electronic Modulation
w/External 0–10 Vdc Input
T = Single-Stage, Direct Spark
Ignition
V = Two-Stage, Direct Spark Ignition
W = Electronic Modulation w/Duct
Thermostat/Room Override Stat
Digit 10 — Design Sequence
A=First Design
Digit 11 — Heat Exchanger
Material
1 = Standard (Aluminized Steel)
2 = 409 Stainless Steel
Digit 12, 13, 14 — Reserved for
Future Use
0=Not Used
Digit 15 — Miscellaneous
0=None
B = Air Pressure Switch for Above
5,000 Feet
G = Horizontal and Vertical Louvers
W = Stainless Steel Drain Pan
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GUNE020AHA10000B
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