Johnson Controls NexusPremier 25 Ton, Technical Manual

Page: 99 / 126

Johnson Controls
5513350-JTG-1018
Example to Determine Unit Length
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
3 5
11
12 27 30 41
99
Weights and Dimensions (Continued)
Table 56: Blank Sections
Post-Evaporator Blank
Pre-Evaporator Blank
Small Blank Large Blank
Options
Empty Empty Empty
Humidifier Humidifier Air Blender
Sound Attenuator Sound Attenuator
Final Filter
Sound Attenuator and Final Filter
Sound Attenuator and Humidifier
The following options are critical when determining unit
length for any selected unit:
Digit 3 – Capacity: 30 Ton
Digit 5 – Heat Source: Staged Gas Stainless Steel
Digit 11 – Discharge Location: Bottom Discharge
Digit 12 – Supply Configuration (Small/Large Post
Evaporator Blank Sections): None
Digit 27 – Draw-Thru Filter Options: Angled Filter
Rack, 2-inch MERV 8 Filters
Digit 30 – Energy Recovery Options: None
Digit 41 – Pre-Evap Options (Pre-Evap Blank Sec -
tion): None
Using the model number given as an example above, de-
termine the unit length from
Table 46
through
Table 56.
Unit length = [tonnage of the unit (30 ton) + econ
draw-thru filter (2-inch) + cooling coil + supply fan + con -
denser]* + no ERW (refer to the No ERW section of the
dimensions tables) + no pre-evap blank
*Note: A standard unit includes length for economizer,
draw-thru filter, cooling coil, supply fan, and condenser. A
standard unit includes a draw-thru (pre-evaporator) filter
with 2-inch angle filter or 2-inch + 12-inch (or 18-inch) filter.
Units with a vertical 4-inch draw-thru filter in place of the
standard 2-inch angle or 2-inch + 12-inch (or 18-inch) filter
are listed as "SU with Vertical Filter 4-inch."
Based on the unit options selected, the configuration is a
standard unit with heat, discharge plenum (B, L, R, T). For
this example, the length of the unit is 333.00 inches.