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24 VAC Ultramax EZ Series Air Disinfection 

Systems 

Owners Manual  

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Installation Steps for External Mounting of 
Power Supply

:                                                                  

 

1.  Determine a suitable location to install unit 

housing. Mounting location should be of 
sufficient strength as to support the unit; 
otherwise, reinforcement of the ductwork may be 
necessary. Fasten the unit in place with four 
self-tapping screws (supplied).  

2.  Select location for UV lamp module. Drill a 1” 

hole. Mount mounting plate over drilled hole with 
screws provided. Insert UV lamp module into 
hole. Attach to HVAC system with 2 self-tapping 
screws (supplied). 

3.  Plug lamp connector onto installed UV lamp 

module. Be sure the connector is pushed fully 
onto the lamp. 

4.  Connect power wires to the off 24 VAC HVAC 

system. 

This should be done in Accordance 

with all State and Local Electrical and 
Building Codes. 

*Note: The T3 UV lamp assembly can be 
removed independently, simply by removing the 
2 screws in the gray lamp holder. 

*3.  Plug the rubber lamp connector fully onto the 

installed UV lamp assembly. Be sure the 4 
pinholes are orientated properly to the 4 
matching pins on the lamp. 

Note: The pins are in a rectangular pattern and 
can only be mated in 2 positions 
 
*Note: UV status viewport lens supplied to verify 
lamp operation (for either installation). A 3/8” 
hole will need to be drilled within a 3” radius 
around the lamp, but above the “V” in the light 
shield. 
 

 
 
 

 
DC-IH-0224 

Installation Steps for Internal Mounting of 
Power Supply

:                                          

 

1.  Mount power supply inside of the air handler 

out of the air stream as much as possible. 
Place the power supply as close to the control 
panel as possible for ease of connecting to 24 
VAC. 

2.  To utilize the internal mounting bracket- first 

install the bracket inside the air handler in a 
location that will position the UV lamp such that 
it bathes the entire surface to be treated. Next 
plug the lamp connector onto the lamp. 

3.  Connect power wires to the off 24 VAC 

HVAC system. 

This should be done in 

Accordance with all State and Local 
Electrical and Building Codes. 

 

Maintenance

:                                          

 
Note: It is recommended that this unit be installed 
and maintained by a trained technician. Never 
perform maintenance on the UV unit without 
disconnecting power. 

 

Typical maintenance consists of replacement of the 
ultraviolet lamps. 
UV lamps undergo a photochemical process during 
operation. This slowly reduces the amount of UV light 
generated to disinfect against airborne pathogens. For 
optimum air stream disinfection against airborne 
pathogens it is recommended the UV lamps be 
changed on an annual basis. 

 

When installing new lamps, ensure that the lamp glass 
is free from any fingerprints or debris, as this may alter 
the path of the UV energy. Use rubbing alcohol and a 
dry cloth to remove any surface contaminants. 

 
 

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