Aprilaire 8553 - Manual (Page 28)

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Figure 4
b) Align the hinge tabs on the base and
thermostat panel. Swing the panel to the
base and snap in place at bottom of
thermostat panel (see Figure 4).
c) Turn the thermostat power back on.
CAUTION: TO PREVENT
DAMAGE, AVOID CONTACT WITH BLUE
TEMPERATURE SENSOR ON BOTTOM
RIGHT-HAND CORNER OF THERMOSTAT
CIRCUIT BOARD.
110-790B 7/11/01 3:11 PM Page 28