Click here to download our PDF reference for a visual representation.

Required information:

Area to be treated.

Height (floor to suspended ceiling) of treated space.

Intended use of the space; Eg. Restaurant, Bar, Lobby etc.

Number of AHU serving the space.

1. Calculate area served by each AHU
2. Enter chart A. Plot area served by AHU 1 on the horizontal Axis
3. Identify the Height Line in chart A
4. Draw vertical line from point located in step 1, to intersect with height line
5. Identify the closest match to Application Line in chart B
6. From the point located in step 4, draw horizontal line to enter chart B and intersect with the Applications Line
7. From the point of intersection, draw a vertical line down to horizontal Axis. Read the machine size
8. If it is between two sizes, chose the generator closest
9. If no Application Line is intersected, divide the area into multiple number of smaller areas, repeat the Selection Procedure, and chose multiple number of generators
10. Repeat the same for other AHU

EXAMPLE 1

Select Ozone Generator for Call Center (Business Process Application)

Number of AHU is 1. Area is 1,200 Sq Ft (113 Sq M). Height to ceiling is 14 Ft (4.30 M)

1. Identify Height Line in chart A. It is Line 1
2. Identify Applications Line in chart B. It is Line 4
3. Enter area 1,200 Sq Ft (113 Sq M) on Horizontal Axis of chart A
4. Draw vertical line to intersect with the identified Height Line (Line 1)
5. From point of intersection, draw horizontal line to enter chart B and intersect with the identified Applications Line (Line 4)
6. From point of intersection, draw vertical line down to Horizontal Axis
7. Point of intersection on Horizontal Axis is K3. If multiple AHU’s serve one common area, one set of IAQ Monitor and Controller is adequate