FOR HVAC INSTALLER ONLY
5
Ultra-Aire 90H Installer’s & Owner’s Manual
Figure 1C
pump cover. This switch should be installed in series with the field
wire that connects the blue (#5) lead from the UA-90H to the the
control panel. If the pump fails, this switch opens the compressor
control circuit and stops water production before the reservoir
overflows. The UA-90H will continue to ventilate or circulate air as
normal, but will not dehumidify until this switch closes.
4.4 Ducting
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 UA-90H into the supply of the existing heating system.
Installation of a separate supply duct to the UA-90H from a central
area is recommended.
Your UA90 comes supplied with rigid duct collars. In order to attach
these duct collars you will need a screwdriver.
Step 1
. Attach 6” diameter fresh air ventilation damper. (if desired)
Note: If not using ventinaltion damper, do not remove knock out.
Remove knock out using side cutters. (Discard)
Note desired orientation of damper control lever. (fig 1C)
Fasten duct collar to cabinet using four #8 screws provided. (fig 1D)
Adjust damper to desired position. Open (fig 1E) or closed (fig 1C)
Step 2
. Attach the 10” diameter intake duct collar using six #8 screws
provided.
Figure 1A
Figure 1B
Figure 1D
Figure 1E
