Installation Manual

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OUTDOOR TEMPERATURE SENSOR (OPTIONAL)
Outdoor temperature can be measured by attaching an
8052 sensor to the S1 and S2 terminals. System setting
#05 (Remote sensor) is used to enable sensor.
Heat pump applications 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.
INSTALLATION
C
G
Y
W
R
L
S1
S2
O/B
W2
Y2
RC
• Install on side of building out of direct sunlight
(north side recommended).
• Mount above snow line.
• Mount at least 3’ away from exhaust vents and
condensing lines.
• Maximum wire length is 300’.
• Do not route wires along 120 VAC lines.
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.
INSTALLATION
POWER & RESET OPTIONS
The thermostat is powered from 24VAC. In the case of power loss the thermostat will maintain the clock for 24
hours. The thermostat has a memory backup that saves the thermostat settings in case of power interruption.
The reset button located under the cover on the front of the thermostat can be used to reset the thermostat to
factory defaults. The system settings will also be set to default.
90-2033