General Info

• T H E FIELD CO N T R O L S C O M PA N Y •
4
Note: Spacing between lamps should be at least four inches.
Installation Locations
Locating the UV lamp in the supply duct over the A/C coil is the first choice as this is downstream of the air filter, keeping the
lamp clean. Also, the lamp will inhibit bacteria growth in condensation formed on the air conditioning coil, a prime breeding
ground for bacteria, spores and viruses which can become airborne. Alternatively, install the UV device in the return air duct,
preferably downstream of the air filter. Installing a UV device in both the supply (over the A/C coil) and the return is ideal for its
cumulative effect.
Calculations for How Many Lamps & Which Size
Practical factors are:
1) the square footage of the home/office.
2) the size of the duct.
FIGURE 5
"A" Coil
Minimum
Length
UV-12 = 12 Inches
UV-18 = 18 Inches
Minimum
Length
UV-12 = 12 Inches
UV-18 = 18 Inches
6"
Approximately
30"
FIGURE 4
1000 1 1
1500 2 1
2000 2 1
2500 3 2
3000 3 2
3500 4 3
4000 4 3
Square Footage UV-12 (for Ducts less than 18” wide) UV-18 (for Ducts 18” wide or more)