PERATION
Terminal 12 and 13. The main output of the thermostat is modulating PI analog (4~20mA or
ing
d 8. This output can be used as the main output for heating
ond
ystem Button
utton to select among heat mode, cool mode and auto mode.
ge over
ernal sensor installed in terminal 3 and 4. In
e
an Button
itch on three-speed models allows selection of three different settings- (Low/Medium/High)
etback Button
button for 5 seconds, the thermostat can shift from comfort mode to setback (energy
ON OFF
Heating
Relay
External
Sensor
2
1
13
12
8 9
7
3
5 6
4
10 11
Occupancy
Switch
H M
L
Fan
DC0~10V Or 4~20MA
Modulating Output
AGND-
AOUT+
C
24VAC
R
Figure 5
O
Control
Output 1:
0-10Vdc). This signal uses a variable mA signal for the control of analog damper actuator and analog
valve actuator in cooling or heating. (User can select On/Off output by terminal 7 and 9 to control heat
system. See configuration menu item 12)
Output 2:On/off output from terminal 7 an
system or act as the second heating output. (See configuration menu item 12). If it is selected as the sec
heating output, it will activate the second stage heating when the setting temperature is 1
℃
plus P-band
value higher than room temperature.
S
Pushing system b
Heat mode:
Thermostat operates only for heating
Cool mode:
Thermostat operates only for cooling
Auto mode:
Thermostat operates in automatic chan
Automatic change over
function is available only when ext
automatic changeover, the thermostat detects when the system switches between heat mode and cool mod
by comparing the air supply temperature with the ambient temperature. If the thermostat is in heat mode, it
switches to cool mode when the air supply is cooler than ambient by 5
℃
(9
℉
) or more. If it is in cool
mode, it switches to heat mode when the air supply is warmer than ambient by 5
℃
(9
℉
) or more.
F
Fan speed sw
S
Holding the setback
saving). Factory default setting for setback mode in heating is 18
℃
and for cooling is 25
℃
. Shows
indicate you are now in comfort mode while shows indicate you are now in setback mode. Every time
you change the setting in comfort mode, the new setpoint will be memorized as the setpoint of the comfort
mode.
4
Содержание ONX908PIT-V1-S1-F3/B
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