8
OAU-SVX01H-EN
Model Number Descriptions
Horizon Outdoor Air Unit
Digit 1, 2 — Unit Type
OA = Outdoor
Air
Digit 3 — Cabinet Size
K
=
1,500 cfm–9,000 cfm
N
=
3,750 cfm–13,500 cfm
Digit 4 — Major Design
Sequence
C
=
Revision 4
D
=
Revision 5
E
=
Heat Pump
Digit 5, 6, 7 — Normal Gross
Cooling Capacity (MBh)
000 = No
Cooling
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
420 =
35 Tons High Efficiency
480 =
40 Tons High Efficiency
540 =
45 Tons High Efficiency
600 =
50 Tons High Efficiency
648 =
54 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
E
=
Vertical Discharge/No Return
F
=
Horizontal Discharge/No Return
G
=
Vertical Discharge/
Split Vertical Return-Exhaust
H
=
Horizontal Discharge/
Split Vertical Return-Exhaust
Digit 9 — Voltage Selection
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
C
=
DX 4-Row Interlaced
D
=
DX 6-Row Interlaced
Digit 12 — Hot Gas Reheat
0
=
No HGRH
1
=
Fin and Tube Modulating
2
=
Fin and Tube 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)
F
=
Scroll Compressors w/Sound
Attenuation Package
G
=
Digital Scroll (1
st
Circuit Only)
w/Sound Attenuation Package
H
=
Digital Scroll (1
st
Circuit and
2
nd
Circuit) w/Sound Attenuation
Package
J
=
Variable Speed Scroll (1
st
Circuit
Only) w/Sound Attenuation
Package
K
=
Variable Speed Scroll (1
st
Circuit
and 2
nd
Circuit) w/Sound
Attenuation Package
L
=
Variable Speed Scroll (1
st
Circuit), Digital Scroll (2
nd
Circuit)
M
=
Variable Speed Scroll (1
st
Circuit), Digital Scroll (2
nd
Circuit) w/Sound Attenuation
Package
Digit 14 — Condenser
0
= No
Condenser
1
=
Air-Cooled Fin and Tube
2
=
Air-Cooled Fin and Tube
w/Head Pressure On/Off Control
4
=
Air-Cooled Fin and Tube
w/Head Pressure Variable Speed
Digit 15 — Refrigerant Capacity
Control
0
=
No RCC Valve
A
=
RCC Valve on 1
st
Circuit
Digit 16 — Indoor Fan Motor
(IFM)
0
=
Direct Drive w/VFD
1
=
Direct Drive (VFD by Others)
4
=
Direct Drive w/Shaft Grounding
Ring w/VFD
5
=
Special Motor Option
Digit 17 — Indoor Fan Wheel
A
=
120
B
=
120.6
C
=
140
D
=
140.6
E
=
160
F
=
160.6
G
=
180
H
=
180.6
J
=
200
K
=
200.6
L
=
180 X 2
M
=
180.6 X 2
Digit 18 — Indoor Fan Motor
Power (hp)
E
=
1 hp—1800 rpm
F
=
1 hp—3600 rpm
G
=
1.5 hp—1800 rpm
H
=
1.5 hp—3600 rpm
J
=
2 hp—1800 rpm
K
=
2 hp—3600 rpm
L
=
3 hp—1800 rpm
M
=
3 hp—3600 rpm
N
=
5 hp—1800 rpm
P
=
5 hp—3600 rpm
R
=
7.5 hp—1800 rpm
S
=
7.5 hp—3600 rpm
T
=
10 hp—1800 rpm
U
=
10 hp—3600 rpm
V
=
15 hp—1800 rpm
W =
15 hp—3600 rpm
Digit 19 — Reserved for Future
Use
Digit 20 — Heat Type (PRI/SEC)
0
= No
Heat
A
= Indirect-Fired
(IF)
C
= Electric—4-Stage
D
= Electric—SCR
Modulating
G
=
Dual Fuel (PRI-IF/SEC-ELEC)
H
=
Dual Fuel (PRI-ELEC/SEC-ELEC)
J
= Hot
Water
L
=
No Primary Heat,
Secondary ELEC-STAGED
N
=
Dual Fuel
(PRI-ELEC-STAGED/SEC-ELEC-
STAGED)
Q
=
Dual Fuel (PRI-HW/
SEC-ELEC-STAGED)
T
=
Dual Fuel (PRI-IF/SEC-ELEC-SCR)
U
=
Dual Fuel (PRI-ELEC-SCR/
SEC-ELEC-SCR)
V
=
No Primary Heat,
Secondary ELEC-SCR
W =
Dual Fuel (PRI-ELEC-STAGED/
SEC-ELEC-SCR)
Y
=
Dual Fuel (PRI-HW/
SEC-ELEC-SCR)
X
=
Special Heat Option
