US STW PTAC 8/8/01 5:34 PM Page 9
3)Attach the
4)Connect the power supply conductors to the Terminal block and the Grounding screw.
5)Attach the cover plate.
Terminal block
Grounding screw
Cover plate 
Bottom plate 
Conduit
6)Reinstall the front grille. (See “Front Grille” on page 3.)
5.AIR LOUVERS
The direction of the heated or cooled air may be adjusted by removing and turning the louvers around.
To change the louver direction, remove the front grille and 2 louver screws that hold the louvers in place. Turn the louver section 180° (end for end), replace the screws and replace the front grille. The textured face of the louver section must be facing toward the room side.
Front grille
Louver screws
6. TEMPERATURE LIMITING
The normal range of the thermostat control is approximately 55°F to 88°F. The control range may be narrowed by the use of the Temperature Limiting screws located behind the control panel.
Repositioning the screw on the left will limit the maximum temperature about 3.7°F for each hole in a clockwise rotation; the screw on the right will limit the minimum temperature when moved counter- clockwise. Limiting the maximum and minimum set- tings prevents users from turning the controls to extreme positions. Restrictions to full rotation of the thermostat knob may require explanation to the room occupant that the unit will provide comfort- able conditions at the settings allowed.
To access the limiting screws, remove the front grille, the thermostat knob and the operation knob by pulling each knob off its shaft and the control panel. (See the illustration “Fan Cycle Switch” on page 4.) Set the limiting screws to the desired set- ting, and replace the control panel and the control knobs. If the settings do not allow sufficient room temperature control, the limiting screws may have to be repositioned.
Stop link
Tapped holes (10)
Thermostat shaft
(Warmest)(Coldest)
Temperature limiting screws (location at shipment)
When the limiting screws are relocated, it is recom- mended that the screws be set no higher than the second hole from the original bottom position. This provides an operating range between approximately 58°F and 80°F. In order to maximize the benefit of the temperature limiting, it may be necessary to adjust the limiting screws seasonally, maintained at moder- ate temperatures (i.e., heating season temperatures limited between 60°F and 75°F; cooling season tem- peratures limited between 85°F and 65°F).
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