5-565.1
55
model nomenclature for system units
1 - Product type (Pt)
I - Indoor HVAC Unit
2 - unit configuration (uc)
F - Furnace
B - Blower Package - Furnace & Blower
C - Cooling Package - Furnace, Blower & Cooling
3 - venting (v)
P - Power
4,5,6 - furnace input rating (mBH) (output on 840 & 960)
75 - 75,000 Btu/Hr Input
350 - 350,000 Btu/Hr Input
100 - 100,000 Btu/Hr Input
400 - 400,000 Btu/Hr Input
125 - 125,000 Btu/Hr Input
500 - 500,000 Btu/Hr Input
150 - 150,000 Btu/Hr Input
600 - 600,000 Btu/Hr Input
175 - 175,000 Btu/Hr Input
700 - 700,000 Btu/Hr Input
200 - 200,000 Btu/Hr Input
800 - 800,000 Btu/Hr Input
225 - 225,000 Btu/Hr Input
840 - 1,050,000 Btu/Hr Input
250 - 250,000 Btu/Hr Input
960 - 1,200,000 Btu/Hr Input
300 - 300,000 Btu/Hr Input
7 - Heat exchanger/Burner/drip Pan material (He)
A - Aluminized Steel
S - 409 Stainless Steel Heat Exchanger/Burner
T - 409 Stainless Steel Heat Exchanger/Burner/Drip Pan
8 - development sequence designation (ds)
F - Single Stage
M - 2-stage or Modulating
9 - access side (as)
R - Right Hand
L - Left hand
10 - air temperature rise (atr)
H - High 60°-100°F
11 - gas type (gt)
N - Natural with ignition controller
P - Propane with ignition controller
12 - gas valve (gv)
1 - Single Stage
5 - Electronic Modulation Master
2 - Two Stage
6 - Electronic Modulation Slave
3 - Mechanical Modulation
7 - Electronic Modulation 0-10 Vdc
External Input
4 - Electronic Modulation
8 - Electronic Modulation 4-20 mA
External Input
13 - additional safety switches (ss)
4 - No Switches (Standard) 1 - Low Gas Pressure Switch (Premium)
0 - No Switches (Premium) 2 - High Gas Pressure Switch (Premium)
3 - High and Low Gas Pressure
Switch (Premium)
14 - supply voltage (sv)
A - 115/60/1
E - 230/60/3
B - 208/60/1
F - 460/60/3
C - 230/60/1
G - 575/60/3
D - 208/60/3
15 - transformer (tr)
1 - 40 VA
4 - 250 VA
2 - 75 VA
0 - None
3 - 150 VA
16 - Blower size & Bearing type (BB)
A - 9-7 Spider Bearings
G - 15-15 Spider Bearings
B - 9-7 Pillow Block Bearings
H - 15-15 Pillow Block Bearings
C - 9-9 Spider Bearings
I - 18-18 Spider Bearings under 15 Hp
D - 9-9 Pillow Block Bearings
J - 18-18 Pillow Block Bearings under 15 Hp
E - 12-12 Spider Bearings
K - 18-18 Pillow Block Bearings for 15 Hp & up
F - 12-12 Pillow Block Bearings L - 20-18 Pillow Block Bearings
17 - motor Horsepower (HP)
A - 1/3 Hp
L - 1/3 Hp with Motor Starter
B - 1/2 Hp
M - 1/2 Hp with Motor Starter
C - 3/4 Hp
N - 3/4 Hp with Motor Starter
D - 1 Hp
P - 1 Hp with Motor Starter
E - 1-1/2 Hp
Q - 1-1/2 Hp with Motor Starter
F - 2 Hp
R - 2 Hp Hp with Motor Starter
G - 3 Hp
S - 3 Hp with Motor Starter
H - 5 Hp
T - 5 Hp with Motor Starter
I - 7-1/2 Hp
W - 7-1/2 Hp with Motor Starter
J - 10 Hp
X - 10 Hp with Motor Starter
K - 15 Hp
Y - 15 Hp with Motor Starter
V - 20 Hp
Z - 20 Hp with Motor Starter
18 - motor type (mt)
1 - ODP
5 - TE
2 - ODP - High Eff.
6 - TE - High Eff.
3 - ODP, 1800/900 RPM
7 - TE, 1800/900 RPM
4 - ODP, 1800/1200 RPM
8 - TE, 1800/1200 RPM
19 - sheave arrangement (sa)
A - (See Sheave Tables 34.1 to 35.5)
20,21 - air control (ac)
AA - RA Opening
BA - FA Opening
CA - FA & RA Openings
DA - FA Dampers w/ 2 pos motor (No RA)
EA - FA & RA Dampers w/ 2 pos motor
EQ - ASHRAE Cycle I - (“EA” with Warm-up Stat)
FA - FA Damper & RA Opening w/ 2 pos motor
GA - FA & RA Mod motor w/ 0-10 Vdc External Input
GB - FA & RA Mod motor w/ 4-20 mA External Input
GC - FA & RA Mod motor w/ Minimum Position
GD - FA & RA Mod motor w/ Remote Position (On Remote Panel)
GE - FA & RA Mod motor w/ 3 pos. damper (100% RA, Variable, 100% OA)
GF - FA & RA Mod motor w/ A350P Proportional Temp Controller
GG - FA & RA Mod motor w/ Minimum Position & Prop. Temp Controller
GH - FA & RA Mod motor w/ Remote Position & Prop. Temp Controller
GJ - FA & RA Mod motor w/ FA Enthalpy Controller
GK - ASHRAE Cycle II - (“GG” with Warm-up Stat)
GM - ASHRAE Cycle II - (“GH” with Warm-up Stat)
GN - ASHRAE Cycle III - (“GF” with Warm-up Stat)
HP - FA & RA Floating motor w/ Space Pressure Controller
JA - Manual FA & RA Dampers
KA - Manual FA Damper with Return Air Opening
22 - evaporative cooling (ec)
0 - None
23 - cooling coil (cc)
0 - None
1 - Factory Installed Coil
1
2
3
4 5 6
7
8
9
10
11
12
13
14
15
16
17
18
19 20 21 22 23
PT
UC
V
MBH
HE
DS
AS
ATR
GT
GV
SS
SV
TR
BB
HP
MT
SA
AC
EC CC
indoor duct furnace model nomenclature
