58
MUA-SVX003B-EN
GR Model Number Description
G R A A 40 G D C C 0 N 2 B
Q
1 0 2 A 0 +
1 2 3 4
5, 6
7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
Digit 1 — Gas Heating Equipment
G — Gas
Digit 2 — Unit Type
F – Rooftop Duct Furnace
R – Rooftop Heating Unit
S – Special Unit Type
Digit 3 — Furnace Type
A – Standard Temp Rise (20-60 F) LH
B – Standard Temp Rise (20-60 F) RH
C – High Temp Rise (60-90 F) LH
D – High Temp Rise (60-90 F) RH
S – Special Furnace Type
Note: LH = Left Hand, RH = Right Hand
Digit 4 — Development Sequence
A – First Generation
Digit 5, 6 — Input Capacity
Single Furnace
10 – 100 MBh Input
15 – 150 MBh Input
20 – 200 MBh Input
25 – 250 MBh Input
30 – 300 MBh Input
35 – 350 MBh Input
40 – 400 MBh Input
Double Furnace
50 – 500 MBh Input
60 – 600 MBh Input
70 – 700 MBh Input
80 – 800 MBh Input
Triple Furnace
12 – 1200 MBh Input
SS – Special Unit
Digit 7 — Venting Type
G – Gravity Venting
P – Power Venting
S – Special Venting
Digit 8 — Main Power Supply
A – 115/60/1
B – 208/60/1
C – 230/60/1
D – 208/60/3
E – 230/60/3
F – 460/60/3
G – 575/60/3
S – Special Main Power Supply
Digit 9 — Main Power Supply Gas
Control Option (Intermittent Pilot
Ignition)
A – Single-Stage
B – Two-Stage
G – Electronic Modulating With Room T-Stat
H – Electronic Modulating With Duct T-Stat
J – Electronic Modulating With Duct T-Stat
and Override Room Thermostat
K – Electronic Modulating W/External 4-20
mA Input (Furnace 1)
L – Electronic Modulating W/External 4-20
mA Input (All furnaces)
M – Electronic Modulating W/External 0-10
VDC Input (Furnace 1)
N – Electronic Modulating W/External 0-10
VDC Input (All furnaces)
P – Two-Stage Remote Temperature Control
R – Three-Stage Remote Temperature Control
T – Four-Stage Remote Temperature Control
U – S-350 2 Stage Modular Electronic Control
System
W – S-350 3 Stage Modular Electronic Control
System
X – S-350 4 Stage Modular Electronic Control
System
Y – S-350 6 Stage Modular Electronic Control
System
S – Special Gas Control
Digits 10,11 — Design Sequence
F0 – Design Sequence
Digit 12 — Fuel Type
N – Natural Gas
P – LP (Propane) Gas
L – Natural Gas with 100% Lockout
S – Special Fuel Type
Digit 13 — Heat Exchanger Material
1 – Aluminized Steel
2– #409 Stainless Steel (First Furnace Only)
3 – #409 Stainless Steel (All Furnace
Sections)
4 – #321 Stainless Steel (First Furnace Only)
5 – #321 Stainless Steel (All Furnace
Sections)
6 – #409 Stainless Steel Package (First
Furnace Only)
7 – #409 Stainless Steel Package (All Furnace
Sections)
8 – #321 Stainless Steel Package (First
Furnace Only)
9 – #321 Stainless Steel Package (All Furnace
Sections)
S – Special Heat Exchanger Package
Digit 14 — Rooftop Arrangements
A – Duct Furnace
B — Blower (Standard)
C — Blower (Standard) Plenum
D — Blower (Standard) Evaporative Cooler
E — Blower (Standard) Evaporative Cooler/
Plenum
G — Blower (High CFM)
J — Blower (High CFM)/Plenum
K — Blower (High CFM)/Coil Cabinet
L — Blower (High CFM)/Coil Cabinet/ Plenum
S – Special Rooftop Arrangement
Digit 15 — Rooftop Heating Unit Motor
Selection
0 – None (Rooftop duct furnace)
A — 1/2 HP. w/Contactor
B — 3/4 HP. w/Contactor
C — 1 HP. w/Contactor
D — 1-1/2 HP. w/Contactor
E — 2 HP. w/Contactor
F — 3 HP. w/Contactor
G — 5 HP. w/Contactor
H — 1/2 HP. w/Magnetic Starter
J — 3/4 HP. w/Magnetic Starter
K — 1 HP. w/Magnetic Starter
L — 1-1/2 HP. w/Magnetic Starter
N — 2 HP. w/Magnetic Starter
P — 3 HP. w/Magnetic Starter
Q — 5 HP. w/Magnetic Starter
R — 7-1/2 HP. w/Magnetic Starter
T — 10 HP. w/Magnetic Starter
U — 15 HP. w/Magnetic Starter
V — 1 HP. w/VFD
W — 1–1/2 HP. w/VFD
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