Maytag Amana PMH Series Service And Troubleshooting page 48

SERVICING
Filter
Figure 1 - DigiAIR™ Kit
Figure 2 - DigiAIR™ Kit installed in PTAC unit
Power Cord
1. Remove the unit front by tilting the bottom of the front
outward and then lift the front straight up.
2. Remove the control knobs on the control panel cover by
pulling upward on the knobs. Remove the escutcheon.
3. Remove the control panel cover by removing the two
screws holding the control panel cover. Tilt the control
panel forward to gain access to the wires.
4. Remove the power cord clamp located near the bottom
right of the chassis.
Filter
Operating instructions
The DigiAIR™ power switch should be in the "ON" position
to activate the module. When this switch is ON and the
PTAC unit is properly powered, the fan will operate and the
vent door motor will keep the DigiAIR™ vent door in the
open position.
This allows makeup outside air to flow through the Di-
giAIR™ system, 24/7/365. The compressor and optional
250 watt electric resistance heater may be energized when
configured temperatures, outside air RH% and operating
conditions are met. If codes or property ownership man-
date that the makeup air is required 100% of the time,
then the DigiAIR™ module should never be powered off.
If preferred, the vent door can be permanently installed in
the open position by adding a screw to the additional holes
provided in the vent panel and vent door, Figures 3, 4, 5.
To keep the vent door always open, manually align Figures
4 and 5 then insert a screw through the vent door & vent
panel holes. See Figure 4 & 5.
If local codes allow for the property (or individual room)
ventilation exhaust system to be powered off in extreme
weather conditions (very cold weather, dust storms etc.) or
when the room becomes unoccupied, the DigiAIR™ mod-
ule can be powered off and the fan will cease operating
and the vent door will slide to the closed position. (if the
optional vent door screw is not installed)
NOTE: If it is preferable for the vent door to be manually
kept open at all times, the screws must be inserted before
the unit is installed into the wall sleeve.
Screw Hole
TOP
Screws
Figure 3
Vent Door
Figure 4
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