Dual Cylinder Nozzle And Piping Parameters - CaptiveAire EWC Installation, Operation And Maintenance Manual

Dual Cylinder Nozzle and Piping Parameters

A dual cylinder system supports up to 12 flow points. Dual cylinder can be piped in series or parallel with a
maximum of 24" of pipe between cylinders.
Table 10 - Agent Distribution Piping Limitations for Dual Cylinder System
Pipe Section
Supply line
Overlapping Nozzle Appliance Branch (TF1)
Dedicated Nozzle Appliance Branch (ADP)
Plenum Branch
Duct Branch
Notes:
1. Tees allowed in supply line only, maximum of 8.
2. Additional elbows are permitted on branch lines, provided linear pipe length is reduced by
corresponding equivalent length (1.3 ft per 90° elbow, 0.6 ft per 45° elbow).
For example: a 3/8" steel elbow has an equivalent length of 1.3 ft. An ADP appliance branch may use
4 elbows, provided the total linear pipe is reduced by 1.3 ft (e.g., from 5 ft to 3.7 ft). Additional pipe cannot
be added in lieu of fittings, as pipe volume limits could be exceeded.
3. Maximum 6 ft vertical rise of supply line above cylinder outlet.
4. Maximum 2 ft vertical rise of duct or plenum branch above supply line.
5. Maximum 13.5 ft linear pipe between two most remote branch tees on supply line.
6. Minimum 7 ft pipe and 3 elbows before a range w/o shelf or fryer to prevent splash.
7. Minimum of 7 ft pipe and 2 elbows before a wok to prevent splash. Furthermore, a total of 10 ft pipe,
6 elbows, and minimum of 4 flows are required in the complete pipe network.
8. Minimum 7 ft pipe and 2 elbows before a range with shelf to prevent splash. Furthermore, a total of
10 ft of pipe, 6 elbows, and a minimum of 5 flows are required in the complete pipe network.
Table 9 - Dual Cylinder System Configurations
TF1 Nozzle Qty
6
5
4
Max Pipe Length (ft)
ADP Nozzle Qty
0
2 Max
4 Max
44
3.5
5
3
3
37
Max Number of Elbows
10
2
3
2
2