Mounting holes, Fan option switch controls fan delay, Figure 3 – Aprilaire 8353 User Manual
Page 4: Figure 4, Figure 5
Figure 3
7. Drill the marked holes using a 3/16” drill bit. Note: Enclosed plastic
anchors do not require a drilled hole for drywall.
8. Tap plastic anchors into the wall.
9. Align base with plastic anchors and feed wires through opening.
See Fig 4.
Figure 4
10. Secure base to wall with supplied screws.
11. Connect wires to terminal strip. Refer to wiring diagrams on other
side of this sheet. Make sure wire connections are secure.
12. Place fan option switch into either the “ELEC” or “GAS” position
depending upon the type of furnace. Refer to Figure 5.
Figure 5
4
PROG
MAN
CHANGE
SET AUTO/MAN
Elec
Gas
RH
AM
PM
MORN DAY EVE NITE
RC
W
Y
G
FAN AUTO ON
MOUNTING HOLES
COOL OFF HEAT
PROG
MAN
CHANGE
SET AUTO/MAN
Elec
Gas
RH
AM
PM
MORN DAY EVE NITE
RC
W
Y
G
FAN AUTO ON
COOL OFF HEAT
PROG
MAN
CHANGE
SET AUTO/MAN
Elec
Gas
RH
AM
PM
MORN DAY EVE NITE
RC
W
Y
G
FAN AUTO ON
FAN
OPTION
SWITCH
Controls
fan delay.
COOL OFF HEAT