Installation
3
2.4
Installation Considerations
The XDO module is to be securely mounted to the overhead building structure. It is typically hung 18-
24" (457-610mm) above the heat-dissipating equipment. A suspended ceiling, if one exists, should be
at the same level as the top of the XDO. If the suspended ceiling has open grates, it may be the same
level as the bottom of the XDO.
Determine whether the installation will include the optional lighting units. Attaching a lighting unit
requires two XDO modules mounted against each other (see
8.0 - Mounting Optional Light Units
).
The lights require separate power connections.
2.4.1 Room Preparation
The room should be well insulated and must have a sealed vapor barrier. The vapor barrier in the
ceiling and walls can be a polyethylene film. Paint on concrete walls and floors should contain either
rubber or plastic.
Outside or fresh air should be kept to a minimum when temperature and humidity must be tightly
controlled. Outside air adds to the cooling, heating, dehumidifying and humidifying loads of the site.
Doors should be properly sealed to minimize leaks and should not contain ventilation grilles.
Table 1
Application limits
Input Voltage
Range of Return Air Conditions to Unit
Minimum
Maximum
Dry Bulb Temp.
Relative Humidity
-10%
+5%
60° to 100°F
(16° to 38°C)
20% to 80%
NOTE
The vapor barrier is the single most important requirement for maintaining
environmental control in the conditioned space.
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