Johnson Controls
5586996-JSG-A-0120 | Start-Up & Operation Guide
25–50 Ton Model Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
G V A 1 M – 1 B 1 A A – 1 A 6 0 A – A 2 4 1 B – F 2 B B H – 4 C 1 A 1 – B K AG 1 – 0 1 0 1 C – 0 1 0 B C – 0 0 0 1
Digits 1–2: Product Brand Name
GV: Johnson Controls
4
Nomenclature
Digit 3: Capacity
A: 25 Ton
B: 30 Ton
C: 40 Ton
D: 50 Ton
Digit 4: Efficiency
1: Standard Capacity, Standard Efficiency
2: Std Capacity, High Efficiency
3: High Capacity, Std Efficiency
4: Std Capacity, Std Efficiency, Low Sound
5: Std Capacity, High Efficiency, Low Sound
6: High Capacity, Std Efficiency, Low Sound
Digit 5: Heat Source
A: Cooling Only
B: Staged Gas Aluminized Burner
C: Staged Gas Stainless Steel (SST)
G: Modulating Gas Stainless Steel
K: Steam Coil
L: Hot Water Coil
M: Electric Heat
Digit 6A: Electric Heat Capacity
0: None
1: Low Heat
3: High Heat
4: Low Heat with Silicon Controlled Rectifier
(SCR)
6: High Heat with SCR
Digit 6B: Natural Gas Heat Capacity
0: None
1: 250 MBH
2: 500 MBH
3: 750 MBH
5: 1,250 MBH
Digit 6C: Hot Water or Steam
Heating Coil Option
0: None
1: Low Heat without Valves
2: Low Heat with Valves
3: High Heat without Valves
4: High Heat with Valves
Digit 7: Unit Type
A: Single Zone Variable Air Volume (SZVAV)
(No Duct Pressure Transducer)
B: Multi Zone Variable Air Volume (MZVAV)
(Duct Pressure Transducer)
Digit 8: Motor Control Options
1: Supply Fan Variable Frequency Drive
(VFD)
2: Supply Fan VFD with Line Reactor
3: Supply Fan VFD with Bypass (Redundant
VFD)
4: Supply Fan VFD with Line Reactor and
Bypass (Redundant VFD)
5: Supply Fan VFD and Return/Exhaust Fan
VFD
6: Supply Fan VFD with Line Reactor and
Return/Exhaust Fan VFD with Line Reactor
7: Supply Fan VFD and Return/Exhaust
Fan VFD with Bypass (Redundant VFD
for Supply Fan and Bypass for Return or
Exhaust Fan)
8: Supply Fan VFD with Line Reactor and
Return/Exhaust Fan VFD with Line Reactor
with Bypass (Redundant VFD for Supply
Fan and Bypass for Return or Exhaust Fan
Digit 9: Voltage
A: 208-230 V 3Ph 60 Hz, Single Point Termi-
nal Block
B: 208-230 V 3Ph 60 Hz, Dual Point Terminal
Block
C: 208-230 V 3Ph 60 Hz, Single Point Non-
Fused DISC
D: 208-230 V 3Ph 60 Hz, Single Point
Terminal
Block, 65KA Short-Circuit Current
Rating (SCCR)
E: 208-230 V 3Ph 60 Hz, Dual Point Terminal
Block, 65KA SCCR
F: 208-230 V 3Ph 60 Hz, Single Point Fused
DISC, 65KA SCCR
G: 460 V 3Ph 60 Hz, Single Point Terminal
Block
H: 460 V 3Ph 60 Hz, Dual Point Terminal
Block
J: 460 V 3Ph 60 Hz, Single Point Non-Fused
DISC
K: 460 V 3Ph 60 Hz, Single Point Terminal
Block,
65KA SCCR
L: 460 V 3Ph 60 Hz, Dual Point Terminal
Block, 65KA SCCR
M: 460 V 3Ph 60 Hz, Single Point Fused
DISC, 65KA SCCR
N: 575 V 3Ph 60 Hz, Single Point Terminal
Block
P: 575 V 3Ph 60 Hz, Dual Point Terminal
Block
Q: 575 V 3Ph 60 Hz, Single Point Non-Fused
DISC
R: 575 V 3Ph 60 Hz, Single Point Terminal
Block,
65KA SCCR
S: 575 V 3Ph 60 Hz, Dual Point Terminal
Block, 65KA SCCR
T: 575 V 3Ph 60 Hz, Single Point Fused
DISC, 65KA SCCR
Digit 10: Return Configuration
A: Bottom Return, Right Outside Air (OA),
Side Exhaust
B: Bottom Return, Right OA, Front Exhaust
C: Bottom Return, Left OA, Side Exhaust
D: Bottom Return, Left OA, Front Exhaust
E: Top Return, Right OA, Side Exhaust (No
Return Fan Available)
F: Top Return, Right OA, Front Exhaust (No
Return Fan Available)
G: Top Return, Left OA, Side Exhaust (No
Return Fan Available)
H: Top Return, Left OA, Front Exhaust (No
Return Fan Available)
J: Left Return, Right OA, Front Exhaust
K: Right Return, Left OA, Front Exhaust
L: Front Return, Left OA, Right Exhaust
M: Front Return, Right OA, Left Exhaust
N: Bottom Return, No OA, No Exhaust Air
(EA) (No Return Fan Available)
P: Top Return, No OA, No EA (No Return Fan
Available)
Q: Left Return, No OA, No EA (No Return
Fan Available)
R: Right Return, No OA, No EA (No Return
Fan Available)
S: Front Return, No OA, No EA (No Return
Fan Available)
Digit 11: Discharge Locations
1: Bottom Discharge, from Discharge Plenum
2: Bottom Discharge, Discharge through Heat
Section
3: Top Discharge, from Discharge Plenum
4: Right Discharge, from Discharge Plenum
5: Left Discharge, from Discharge Plenum
6: Left Discharge, Discharge through Heat
Section
Digit 12: Supply Configuration
A: None
B: Small Blank
C, D: Large Blank
E, G: Large Blank with Final Filter
F:
Small Blank with Humidifier and SST Drain
Pan
H, K: Large
Blank with Humidifier and SST
Drain Pan
L: Small Blank Sound Attenuator
M, N: Large Blank Sound Attenuator
P: Small Blank Final Filter
Q, T: Large Blank with Sound Attenuator and
Final Filter
S, V: Large Blank with Sound Attenuator and
Humidifier and SST Drain Pan
Digit 13: Final Filter Options
1:
MERV 15 Bag Final Filters with 2-inch
MERV 8
Filters
2: MERV 14 Rigid Final Filters with 2-inch
MERV 8 Filters
3: MERV 17 High Efficiency Particulate Air
(HEPA) Final Filters with 2-inch MERV 8
Filters
4: MERV 14/15 Filter Rack (No Filters)
5: HEPA Filter Rack (No Filters)
6: None
Digit 14: Final Filter Control Op-
tions
0: None
1: Combined Pre and Post Filter Transducer
2: Separate Pre and Post Filter Transducer
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