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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 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.
• 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.
61000652D 8400 Tstat Install.indd 4
7/9/13 9:03 AM
