Aprilaire 8355 - Manual (Page 3)

FIGURE 1
Installing the Model 8355 Thermostat
NOTE: For new installations, mount thermostat on inside wall, 4-5 feet
above the floor. Do not install behind a door, in a corner, near air vents, in
direct sunlight, or near any heat or steam generating fixtures. Installation
at these places will affect thermostat operation.
IMPORTANT: This thermostat is compatible with 100% lockout systems. To
reset the system, turn thermostat to OFF position for at least 60 seconds.
1. Turn power off to the heating and cooling systems.
2. Place COOL-OFF-HEAT-EM in OFF position.
3. Place FAN: AUTO-ON switch
into AUTO position.
4. Remove the cover using a coin
or screwdriver.
FIGURE 2
5. Place thermostat against the wall at desired location. Make sure
wires will feed through opening on base of thermostat.
6. Mark placement of mounting holes. See Fig. 3. Set base aside.
3
EM
PROG
MAN
SET PROG/MAN COOL-OFF-HEAT-EM
AUX CHECK EMER
FAN: AUTO - ON > >
FAN: AUTO-ON
COOL-OFF-HEAT-EM