8 OAU-SVX005C-EN
Model Number Descriptions
Horizon Outdoor Air Unit
Digit 1, 2 — Unit Type
OA = Outdoor Air
Digit 3 — Cabinet Size
B = 500 cfm–3,000 cfm
G = 1,250 cfm–7,500 cfm
Digit 4 — Major Design
Sequence
D = Revision 1
E = Heat Pump
Digit 5, 6, 7 — Normal Gross
Cooling Capacity (MBh)
000 = No Cooling
036 = 3 Tons High Efficiency
048 = 4 Tons High Efficiency
060 = 5 Tons High Efficiency
072 = 6 Tons High Efficiency
084 = 7 Tons High Efficiency
096 = 8 Tons High Efficiency
108 = 9 Tons High Efficiency
120 = 10 Tons High Efficiency
144 = 12 Tons High Efficiency
180 = 15 Tons High Efficiency
210 = 17 Tons High Efficiency
240 = 20 Tons High Efficiency
264 = 22 Tons High Efficiency
300 = 25 Tons High Efficiency
360 = 30 Tons High Efficiency
Digit 8 — Minor Design
Sequence
A = Vertical Discharge/Vertical Return
B = Vertical Discharge/
Horizontal Return
C = Horizontal Discharge/
Vertical Return
D = Horizontal Discharge/
Horizontal Return
Digit 9 — Voltage Selection
1 = 115/60/1
2 = 208-230/60/1
3 = 208-230/60/3
4 = 460/60/3
5 = 575/60/3
Digit 10 — Reserved for Future
Use
Digit 11 — Evaporator Type
0 = No Cooling
A = DX 3-Row
B = DX 4-Row
C = DX 4-Row Interlaced
D = DX 6-Row Interlaced
E = DX 8-Row
F = Glycol/Chilled Water Coil
G = DX 4-Row with
MSP
®
Technology
Digit 12 — Hot Gas Reheat
0= No HGRH
1 = Fin and Tube Modulating
2 = Fin and Tube On/Off
3 = Microchannel Modulating
4 = Microchannel On/Off
Digit 13 — Compressor
0= No Compressors
A = Scroll Compressors
B = Digital Scroll (1
st
Circuit Only)
C = Digital Scroll (1
st
and 2
nd
Circuit)
D = Variable Speed Scroll (1
st
Circuit Only)
E = Variable Speed Scroll (1
st
and
2
nd
Circuit)
Digit 14 — Condenser
0 = No Condenser
1 = Air-Cooled Fin and Tube
2 = Air-Cooled Fin and Tube
w/Head Pressure On/Off Control
3 = Water-Cooled DX Condenser
Copper/Steel
4 = Air-Cooled Fin and Tube
w/Head Pressure Variable Speed
5 = Air-Cooled Microchannel
6 = Air-Cooled Microchannel
w/Head Pressure On/Off Control
7 = Air-Cooled Microchannel
Variable Speed
8 = Water-Cooled DX Condenser
Copper/Nickel
Digit 15 — Refrigerant Capacity
Control
0 = No RCC Valve
A = RCC Valve on 1
st
Circuit
B = RCC Valve on 1
st
and 2
nd
Circuit
C = ERCC Valve on 1
st
Circuit
D = ERCC Valve on 1
st
and 2
nd
Circuit
E = HGBP Valve on 1
st
Circuit
F = HGBP Valve on 1
st
and
2
nd
Circuit
Digit 16 — Indoor Fan Motor
(IFM)
0 = ECM w/Backward Curved
Plenum Fan
1 = Direct Drive w/ VFD
2 = Belt Drive
3 = Belt Drive w/VFD
4 = Special Motor Option
Digit 17 — Indoor Fan Wheel
A = 355
B = 450
C = 450 X 2
D = 12/9 T2 (Single Fan—Belt Drive)
E = 12/9 BT (Dual Fan—Belt Drive)
Digit 18 — Indoor Fan Motor
Power (hp)
Digit 19 — Reserved for Future
Use
Digit 20 — Heat Type (PRI/SEC)
0 = No Heat
A = Indirect-Fired (IF)
B = No Primary Heat, Direct-Fired
(DF) Secondary
C = Electric—Stage
D = Electric—SCR Modulating
E = Dual Fuel (PRI-IF/SEC-DF)
F = Dual Fuel (PRI-ELEC/SEC-DF)
G = Dual Fuel (PRI-IF/SEC-ELEC)
H = Dual Fuel
(PRI-ELEC-SCR/SEC-ELEC)
J = Hot Water
K = Steam
L = No Primary Heat,
Secondary ELEC
M = Dual Fuel
(PRI-ELEC-STAGED/SEC-DF)
N = Dual Fuel
(PRI-ELEC-STAGED/SEC-ELEC)
Digit 21 — Primary Fuel Type
0 = No Heat
1= Natural Gas
2 = Propane
3 = Electric—Open Coil
4 = Electric—Sheathed Coil
5 = Hot Water
6 = Steam
ECM Belt Drive
A = 1 kW 2 hp
B = 2 kW 3 hp
C = 3 kW 5 hp
D = 4 kW 7.5 hp
E = 10 hp
F = 15 hp
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