Johnson Controls
5513350-JTG-1018
3
4
5
6
7
8
9
15
16
17
19
20
21
22
27
29
31
32
35
49
Example Model Number
The following model number is an example based on the options selected in the previous sections.
G V B 1 C – 1 B 5 G A – 1 A 6 0 A – E 2 0 2 B – E 2 A D G – 2 C 0 E 0 – D M A A 3 – 1 0 0 1 A – 0 0 0 C G – 0 0 0 1
14
Selection Procedure Examples (Continued)
3. Capacity 30 Ton
20. Forward Curved Exhaust Fan with 1-inch Spring Isolation
4. Standard Capacity, Standard Efficiency
21. Exhaust Fan Motor, 3 HP
5. Staged Gas Stainless Steel
22. Exhaust Fan Motor Type, ODP Premium Efficiency 1,800 RPM
6. 250 MBH
27. Pre-Evaporator Filter, Angled Filter Rack, 2-inch MERV 8 Filters
7. Variable Air Volume
29. Dual Enthalpy Economizer, Low Leak Dampers
8. Supply Fan with VFD and Return/Exhaust Fan with VFD
31. Suction, Discharge, and Liquid Line Valves with Replaceable
Core Filter Driers
9. 460 V 3Ph 60 Hz, Single Point Terminal Block
15. Direct Drive Plenum Supply Fan with 1-inch Spring Isolation
32. Convenience Outlet and Internal Lights with Supply and
Return Smoke Detectors
16. Supply Fan Motor, 20 HP
17. Supply Fan Motor Type, ODP Premium Efficiency 1,800 RPM
35. Ultraviolet (UV) Lights and Carbon Dioxide (CO
2
) Sensors
19. Exhaust fan with VFD and Backdraft Damper
49. First Generation
2. From the nomenclature, select digit 15, option A to
opt for direct drive plenum (DDP) supply fan with
1-inch spring isolation. Select digit 16, option E for
20 HP supply fan motor. Select digit 17, option 2 for
ODP premium efficiency, 1,800 RPM.
Select Fan Speed and Horsepower
Requirements of Exhaust Fan
1. Reference
for the 30 ton unit.
In the following example, a unit is designed for ex
-
haust air capacity of 7,000 CFM.
a.
Make any necessary additions to the static resis
-
tance. To find the exhaust air damper pressure
drop, refer to
:
Return duct static pressure (assumed)
0.25
iwg
+ exhaust air damper pressure drop
0.33 iwg
TSP
0.58 iwg
b. Enter at 7,000 CFM and 0.58
iwg
TSP:
RPM =
634 (interpolated)
BHP = 2.72 (interpolated)
2. From the nomenclature, select digit 19, option 2 for
exhaust with variable frequency drive (VFD) and
backdraft damper; digit 20, option B for the exhaust
fan with 1-inch spring isolation; and digit 21, option
E for 3 HP exhaust fan motor. The resulting model
number will show 2BE for digits 19, 20, and 21.
Select Energy Recovery Wheel (ERW)/
Hot Gas Reheat (HGRH)/Sound Attenuator/
Humidifier
Refer to Selection Navigator or contact the local sales office
for more information on available options and accessories.
