Ecobee SMART THERMOSTAT Installation Manual - page 4
which can be determined by turning the equipment off and on, the
user is encouraged to try to correct the interference by one of more of
the following measures:
Reorient or relocate the receiving antenna
Increase the separation between the equipment and receiver
Connect the equipment into an outlet on a circuit different from
that to which the receiver is connected.
Consult the dealer or an experienced radio/TV contractor for help.
Warning: Changes or modifications not expressly approved
by ecobee Inc. could void the user’s authority to operate
the equipment.
To satisfy FCC/IC RF exposure safety requirements, a separation
distance of 20 cm or more should be maintained between this
device and persons. To ensure compliance, operations at closer
than this distance are not allowed.
FCC ID: WR9EBSTAT
IC: 7981A-EBSTAT
Specifications
Temperature ranges
Heat: 45 – 79°F (7 – 26°C)
Cool: 58 – 92°F (14 – 33°C)
Display: 40 – 100°F (5 – 37°C)
Sensitivity: +/- 1°F (0.5°C)
Operating: 32 – 130°F (0 – 55°C)
Humidity Range
Humidify: 20 to 50% R.H
Dehumidify: 30 to 60% R.H
Display: 0 - 90% R.H
Sensitivity: +/- 2% R.H.
Operating: 5 – 95% R.H
Dimensions
Smart Thermostat: 5.5”W x 3.25”H x 1”D (139.5mm H x 82.5mm W x
25mm D)
Equipment Interface: 4.6”W x 10”H x 1.3”D (118mm W x 254mm H x
32mm D)
Power
AC Transformer - 24 Vac - 3VA Minimum (not included)
Optional Power Adaptor – 120V 50/60Hz to 12V DC 1A, (optional)
Battery – CR2032 – 3V lithium coin cell (included)
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Wiring Specifications
Refer to this table to determine maximum wire lengths allowed:
Smart Thermostat to Equipment Interface
18 AWG
20 AWG
22 AWG
1250ft/380m
790ft/240m
500ft/150m
Equipment Interface to heating/air equipment
18 AWG
20 AWG
22 AWG
128ft/39m
80ft/24m
50ft/15m
Terminal Description and Electrical Ratings
Terminal
Description
Voltage
Current max
Y
1st stage cooling
30V AC
3A
W (O/B)
1st stage heating
30V AC
3A
(or changeover)
G
Fan
30V AC
3A
W2(AUX) 2nd stage heating
30V AC
3A
(or 1st auxiliary heat)
R/H
Heat transformer return
30V AC
3A
R/C
Cool transformer return
30V AC
3A
ACC1
1st accessory relay
30V AC
3A
ACC1r
1st accessory relay return
30V AC
3A
ACC2
2nd accessory relay
30V AC
3A
ACC2r
2nd accessory relay return
30V AC
3A
ACC3
3rd accessory relay
30V AC
3A
ACC3r
3rd accessory relay return
30V AC
3A
IN1 +
Input 1 +
Dry contact only Dry contact only
IN1-
Input 1 -
Dry contact only Dry contact only
IN2+
Input 2 +
Dry contact only Dry contact only
IN2-
Input 2-
Dry contact only Dry contact only
+12v
12V DC power to thermostat
8-14V DC
600mA
GND
GND to thermostat
-
-
D+
Data + communication line
-
-
D-
Data – communication line
-
-
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