FOR HVAC INSTALLER ONLY
Connect a duct from outside to the 6" collar of the Ultra-Aire if you wish to provide fresh make-up air.
Crawlspace Installation: Locate a separate return for the Ultra- Aire in a central area of the structure. Duct the supply of the Ultra-Aire to a 8" x 8" x 8" tee/damper that is 30% open to the crawlspace. Duct the other side of the tee to the air return of the existing HVAC system. If the existing HVAC system has a central return, duct the other side of the tee to the air supply of the existing HVAC system. Connect a duct from outside to the 6" collar of the Ultra-Aire if you wish to provide fresh make-up air.
3.4E Installation in an Attic with an Existing Forced Air HVAC System
ALWAYS install a catch pan for condensate under the Ultra-Aire in an attic or condensate may drip down on the ceiling of the living space below.
Locate a separate return for the Ultra-Aire in a central area of the structure. Duct the supply of the Ultra-Aire to the air supply of the
existing HVAC system. If the existing HVAC system has a central return, duct the supply of the Ultra-Aire to the air supply of the existing HVAC system. Connect a duct from outside to the 6" collar of the Ultra-Aire if you wish to provide fresh make-up air.
3.4F Installation in a Structure with Two Forced Air HVAC Systems
Attach the Ultra-Aire return to to a independent return from the upper level. Attach the Ultra-Aire supply to the supply of the basement HVAC system. This will promote circulation of air through the whole structure from the upper level to the lower level through the Ultra-Aire . If the Ultra-Aire is not connected to both HVAC systems, it will not control the humidity and ventilation of the entire structure. Connect a duct from outside to the 6" collar of the Ultra- Aire if you wish to provide fresh make-up air.
3.4G Installation in a Structure with No Existing Forced Air HVAC Systems
When installing the Ultra-Aire in a structure that does not have a forced air HVAC system, a single return for the Ultra-Aire should be installed in central open area of the structure. DO NOT locate the return in a bathroom or a kitchen. The supply of the Ultra- Aire should be located in the remote areas of the structure (such as bedrooms, den, etc.). By ducting this way the air inside the structure will circulate through the Ultra-Aire to be filtered and dehumidified. Connect a duct from outside to the 6" collar of the Ultra-Aire if you wish to provide fresh make-up air.
3.5 Quiet Installation
Loosen the compressor mounting bolts from the base of the unit. Do not remove the bolts, but loosen them so the compressor mounting grommets are not compressed. These bolts are tightened at the factory to prevent damage during shipping. Loosening them will reduce the amount of compressor vibration. Make sure none of the compressor tubes are pressed against the cabinet or front panel.
A length of 10 feet or more of acoustical flex ducting on the outlet of the Ultra-Aire will reduce air noise from the blower. A length of flexible ducting on all Ultra-Aire duct connections is recommended to reduce noise and vibration transmitted to rigid ductwork in the structure.
4. Controls
The Ultra-Aire can be equipped with various accessories to enhance its operation. A remote control panel must be used with the Ultra-Aire . There are two remote control panels from which to choose. The humidity/fan control panel is used to control humidity and the fan. The ventilation timer and humidity control panel is used to control ventilation, humidity and the fan.
4.1 Humidity/Fan Control Panel
See Figure 1: The humidity/fan control panel automatically controls the humidity of the living space. The humidity/fan control panel contains an adjustable humidity control and a fan switch. This panel should be mounted in a central area of the structure where it can accurately sense the humidity of the air in the living space. The panel has small perforations that must remain open to the air within the living space for accurate humidity sensing.
The humidity/fan control panel can be used in conjunction with the optional fresh air damper. When used with the optional fresh air damper, the fan/filter switch will act as a fresh air ventilation control. When the switch is ON (in this configuration), the fan will run, the fresh air damper will open, and fresh air will be filtered and brought into the structure. When the switch is OFF, the fresh air damper will close and the fan will operate only when the humidity control calls for dehumidification.
