INSTALLATION:
Commercial buildings only.
Suitable for bars, resataurants, dog kennels etc.
• Best results are achieved when the unit is installed where the HVAC system air temperature is most constant.
Therefore, the preferred installation is on the
return side
of the furnace. If return side installation is not possible,
install the unit on the supply side. Mount the 503-5 upstream when installing in combination with a polarized
media air cleaner.
Do not install this unit if there is a device that creates ozone in the space such as an ionizing air
cleaner or any other ozone producing device.
• Do not locate the unit within 20” of plastic material that will be directly exposed to the UV light,
such as wiring, return side humidifier or certain types of air filters. Check with the filter manufacturer
to see if their material is UV resistant. Over time, UV light may degrade plastic.
• Do not touch the glass portion of the lamp with bare hands because oils from the hands can cause
“hot spots” which reduce lamp life. Handle either by the porcelain caps or use a soft cloth. If you
accidentally touch a lamp, wipe it off, using a soft cloth dampened with rubbing alcohol.
1. Cut out the shaded area of the installation template.
(Please see insert.)
2. Center the template on the longitudinal axis of the plenum and attach with tape. Trace the hole
pattern for the unit and mark centers for mounting screws. (Airflow direction is marked on the unit.)
3. Cut an opening for the unit using a 2” hole saw.
4. Remove the cover from the unit by removing the top and bottom retaining nuts using an
11/32 size nut driver and set aside. Do not remove the oxidation control knob.
(For easier installation rotate control knob to the center position before removing cover.)
5. Attach the unit to the air duct using the four self tapping sheet metal screws provided.
6. Replace cover and align the oxidizing control knob with adjustment linkage by gently turning the
knob until the linkage clicks into place. Secure cover using the two retaining nuts.
(Figure A)
Ground
16”
