Honeywell T8524, Данные о продукции, Страница: 10 / 16

T8524 DELUXE ELECTRONIC THERMOSTAT
68-0202
10
Thermostat Information
1. Press the Information
i
key to access the thermostat
information.
M4864
2. Press the increase
▲
key to display the production date
code. The first two large digits are the month and the
third digit is the last digit of the year
(Example: 026=February 1996).
M4865
3. Press the increase
▲
key again to display the software
identification code. (Example: 02 = software ID code 2).
M4866
4. Press the increase
▲
key again to display the software
revision number (Example: 001=Revision number 1).
M4867
M6791
5. Press the increase
▲
key again to display the EEPROM
identification code.
(Example: 222 = EEPROM ID 222).
6. Press and hold the increase
▲
and decrease
▼
keys
together, until the room temperature is displayed, to exit
the system test. The system test times out after five
minutes without any key presses.
CHECKOUT
Outdoor Temperature Sensor
(where applicable)
Allow the outdoor temperature sensor to soak in the outdoor
air for a minimum of five minutes before taking a reading.
With an accurate thermometer ( ± 1 ° F [ ± 0.5 ° C]), measure the
temperature at the sensor location, allowing time for the
thermometer to stabilize before reading. Match the
thermometer reading to the outdoor temperature display at
the thermostat.
To verify the resistance of the sensor, remove one wire from
one of the O
T
terminals. Use an ohmmeter to measure the
resistance across the sensor. Then verify sensor accuracy
with the temperature/resistance curve of Fig. 12.
Fig. 12. Sensor resistance vs. temperature performance
characteristics.
0
100
200
300
400
500
600
700
800
900
RESISTANCE (K ohm)
-40
(-40)
-20
(-29) 0
(-18)
20
(-7)
40
(4)
60
(16) 80
(27) 100
(38) 120
(49)
° F
( ° C)
OUTDOOR TEMPERATURE
M10172A