VAV Thermostat Controller
Specification and Installation Instructions
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Page | 12
Air Flow Program Mode (Operation Mode)
This menu is accessible through normal operation mode.
1. The Mode Selector DIP switch (DS1) must be set to the “OFF” position (Operation Mode). Refer to Wiring on page 2.
2. Press the
and
ºF / º C
keys for 5 seconds. The
“Enter Password”
screen appears.
3. Enter the password (
637
) within 1 minute. Use
the and arrow keys to increase or decrease the value and the
buttons to toggle between the digits. If
you enter the wrong password, the thermostat displays “
Eror
” and returns to Operation
Mode.
4. Use the same menu operations as described in Programming Mode on page 3.
The thermostat will return to normal mode if you navigate through the entire menu and do not make any selection, or if you do not
press any key for 5 minutes. The changed values will be saved automatically.
53.
“Inside Temp Sensor Offset”
Range:
Offset:
Increment:
-30 to 90ºC [-22 to 194ºF]
Max ± 5ºC
0.1ºC [0.2ºF]
Compare the displayed temperature reading with a known value from a thermometer. To offset or calibrate the sensor, use the
arrows key to set the desired temperature reading. This is useful for thermostats installed in areas where the temperature read
is slightly different than the room’s actual temperature. For example, a thermostat placed right under the air diffuser.
If the thermostat is set to use an external temperature sensor (EtS at Step 32, 33 or 34 of programming mode on page 9), the
thermostat displays “OFF”.
54.
“Extern Temper Sensor Offset”
Range:
Offset:
Increment:
-30 to 90ºC [-22 to 194ºF]
Max ± 5ºC
0.1ºC [0.2ºF]
This option appears if you’ve set one of the analog inputs to
EtS
(External temperature sensor) in Step 32, 33 or 34 of
programming mode on page 9. When the thermostat is connected to the appropriate analog input (AI1, AI2, or AI3), the display
shows the temperature read by the external temperature sensor. Adjust the offset by comparing it with a known value (e.g.
thermometer). If the sensor is not connected or short circuited, the display is blank “Error“.
55.
“Pressure Filter Time in Seconds”
Default:
Range:
Increment:
2 seconds
1 to 10 seconds
1 second
This option appears if you have set one of the analog inputs to
PrSd
or
PrSa
in Step 32, 33, or 34. Set the time in seconds of
the numeric filter applied to the pressure analog input. The numeric filter stabilizes the reading and slows down the answer of
the system.
56.
“air flow Intgral time in Seconds”
Default:
Range:
Increment:
0 minutes
0 to 60 minutes
1 minute
Set the time in minutes for the integration factor compensation.
57.
“Adjust Airflow KFactor Vnom”
Default:
Range:
Increment:
1200
100 to 9995
5
Set the value of the K-Factor or the V nominal according to your pressure sensor selection (
PrSd
or
PrSa
in Step 32, 33 or 34
or programming mode on page 9).
•
If Differential Pressure Sensor
(PrSd)
: V = k
√∆P when ∆P=1 (10.00V)
•
If Velocity Pressure Snesor
(PrSa)
: V
nom =10.00V
58.
“Minimum Cooling Airflow”
Default:
Range:
Increment:
100
0 to “maximum cooling airflow”
5
Select the desired value of the minimum airflow in cooling. The minimum value is restricted by the maximum value (Step 59).
