FOR HVAC INSTALLER ONLY
The remote controls of the Ultra-Aire XT150H are powered by a low voltage circuit (24 Vac) and must NEVER contact or be connected to a high voltage circuit. The control wires leaving the Ultra-Aire XT150H and the remote control panels are numbered and color- coded to prevent confusion. Some of the control wires leaving the Ultra-Aire XT150H may not be used with certain control panels and should be left safely disconnected with wire nuts taped onto the stripped ends. Be sure to consult the electrical schematic in this manual or inside the access panel of the Ultra-Aire XT150H before making the control connections.
3.3 Condensate Water Removal
Condensate drains by gravity via the drain port. Use 3/4" male NPT PVC pipe. Route drain pipe to drain. Install a trap if possible. Take care when installing drain pipe to drain port. Use an adjustable wrench to secure the drain port. An optional condensate pump kit may be installed if a lift is required to dispose of the condensate. The condensate pump kit can be ordered directly from the factory. See the optional parts list for information on the kit.
External drain trap on unit is recommended
1.00"
3.4 Ducting
3.4A Installing Duct Collars
The Ultra-Aire XT150H is equipped with 10" and 6" round inlet collars and a 10" round (ovaled) exhaust collar. Follow instructions included with collars.
3.4B Ducting for Dehumidification
For the ideal installation, draw air from the central part of the home and return it to the isolated areas of the home like the bedrooms, den, utility room, or family room. The ductwork of the existing heating system can be used to supply air to the home. If the existing supply goes to isolated areas of the home, discharge the supply of the Ultra-Aire XT150H into the supply of the existing heating system. If the existing heating system incorporates a central supply, installation of a separate supply duct from the Ultra- Aire XT150H to each isolated area is recommended. DO NOT draw air directly from the kitchen, laundry, or isolated basement. You
may draw air from a basement that is open to the home. All flexible ducting connected to the Ultra-Aire XT150H should be UL listed.
The inlet of the Ultra-Aire XT150H is the 10" diameter hole in the filter enclosure of the unit. A 10" round collar is supplied with the unit to attach to round duct. The duct may be permanently attached to the collar. A 6" round collar is provided with the unit to attach to the 6" hole in the filter enclosure. The 6" collar should be capped if fresh make-up air is not desired. If fresh make-up air is desired, see Section 3.4C.
A 10" round (ovaled) collar is supplied with the unit for the outlet of the Ultra-Aire XT150H.
A length of flexible ducting on all Ultra-Aire XT150H duct connections is recommended to reduce noise and vibration transmitted to rigid ductwork in the structure.
Ducting the Ultra-Aire XT150H as mentioned in Sections 3.4A-3.4G requires consideration of the following points:
Duct Sizing: For total duct lengths up to 25', use a minimum 10" diameter round or equivalent rectangular. For longer lengths, use a minimum 12" diameter or equivalent. Grills or diffusers on the duct ends must not excessively restrict airflow.
Isolated Areas: Effective dehumidification may require that ducting be branched to isolated, stagnant areas. Use 8" or larger diameter branch ducting to each of two or three areas, use 6" or larger to each of four or more areas.
Connecting to existing HVAC systems: An optional 10" check damper is available from the factory to prevent reverse flow through the Ultra-Aire XT150H. If the Ultra-Aire XT150H is ducted to the supply ducting air handler, it is recommended that the check damper be placed in the Ultra-Aire XT150H supply duct. Contact the factory when connecting to a static pressure of greater than or equal to +.5" WG.
