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WI-fI SETUp
For detailed instructions for connecting the thermostat to a Wi-Fi network and registering it to an Aprilaire account,
refer to the Wi-Fi Quick Start Guide included in the box.
INSTAllATION
INSTAllATION lOCATION RECOMMENDATIONS
Thermostat should be mounted:
• On an interior wall, in a frequently occupied space.
• Approximately 5' above floor.
• At least 18" from outside wall.
• Thermostat can be mounted to a vertical junction box.
OUTDOOR TEMpERATURE SENSOR (INClUDED)
Outdoor temperature can be measured by attaching the included 8052 sensor to the S1 and S2 terminals . The
outdoor sensor must be enabled in the installer setup menu .
Heat pump models can use the outdoor temperature to effectively utilize the heat pump:
• When the outdoor temperature is less than the Low Balance Point, the heat pump will be locked out and only
auxiliary heating will be used to provide heating.
• When the outdoor temperature is higher than the High Balance Point, the auxiliary heating will be locked out and
only the heat pump will be used to provide heating .
Indoor Air Quality functions can use the outdoor temperature sensor to:
• Control humidification setpoint based on outdoor temperature to prevent condensation
• Lock out humidification for temperatures over 60°F or below -30°F.
• Lock out ventilation based on high and/or low outdoor temperatures.
• Display outdoor temperature on thermostat.
Outdoor temperature sensor should be mounted:
• On side of building out of direct sunlight (north side recommended).
• Above snow line.
• At least 3' away from exhaust vents and condensing lines.
• Using less than 300' of wire.
• Do not route wires along 120 VAC lines.
2
Do not mount thermostat:
• Behind doors, in corners or other dead air spaces.
• In direct sunlight, near lighting fixtures, or other
appliances that give off heat .
• On an outside or unconditioned area wall.
• In the flow of a supply register, in stairwells, or near
outside doors .
• On a wall with concealed pipes or ductwork.
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S1
INSTAllATION
REMOTE TEMpERATURE SENSOR (OpTIONAl)
A remote temperature sensor can be used for control if the thermostat is to be mounted in a concealed location
or a remote sensor can be averaged with the thermostat sensor to control a large space . An 8051 flush mount
or 8053 surface mount remote temperature sensor can be attached to the T1 and T2 terminals and mounted in a
recommended area. The remote sensor must be enabled in the installer set-up menu, and once enabled will override
or be averaged with the thermostat's internal temperature sensor, based on the setting.
Remote temperature sensor should be mounted:
• On an interior wall, in a frequently occupied space.
• Approximately 5' above floor.
• At least 18" from outside wall.
• Using less than 300' of wire.
THERMOSTAT MOUNTINg
1 . Remove the rear mounting plate from the thermostat .
2 . Pull wires through the opening on the back of the rear
mounting plate .
3 . Position and level the mounting plate of the thermostat
on wall and mark the hole locations with a pencil .
4. Drill 1/4" holes and insert supplied anchors
(drywall only) .
5. Place mounting plate over anchors, insert and tighten
screws .
6 . Seal wire entry holes to prevent drafts affecting
temperature readings .
T1
T2
Do not mount remote sensor:
• Behind doors, in corners or other dead air spaces.
• In direct sunlight, near lighting fixtures, or other
appliances that give off heat .
• On an outside or unconditioned area wall.
• In the flow of a supply register, in stairwells, or near
outside doors .
• On a wall with concealed pipes or ductwork.
• Near 120 VAC lines.
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W2
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S1
T1
T2
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