Optional Outdoor Temperature Reset - Nortec SE Series Installation And Operation Manual

Optional Outdoor Temperature Reset

 Each digital controller is equipped with an integrated reset function that can reduce the
setpoint during cold weather operation. This will prevent condensation on windows and
building structures. The above graph illustrates how the setpoint reset feature operates.
 On modulating humidistats this feature is enabled by removing the jumper from terminals 8
and 1 on the humidistat and wiring the outdoor temperature sensor to these terminals. On
On/Off humidistats this feature must be activated with the humidistat's keypad.
 When the outdoor temperature setback feature is in effect, the humidistat will normally
display the calculated setpoint limit based on the outdoor air temperature. A snowflake will
also be displayed to indicate cold weather operation. When any key on the controller is
pressed, the LCD screen will display the customer specified setpoint for a short duration.
2548731 - On/Off Wall Humidistat or,
2548732 - On/Off Duct Humidistat
OR
Note:
1 The Temperature sensor is
intended for duct mounting.
2 Locate the temperature sensor
near the fresh air intake. This
will ensure accurate representation
of the outdoor air temperature.
Connect 24 VAC, terminal
1 of humidifier to terminal
2 of controllers.
Figure 30: Outdoor Temperature Sensor (Modulating Control)
Figure 29: Outdoor Temperature Reset
Insert Other
On/Off
controls
in series
2520263 - Outdoor Temperature
Sensor
E
S
X
E
T
1- 24 VAC
2 - On/Off Loop
3 - Ground
4 - Control Signal
5 - Limit Signal (SETC only)
6 - 5 VDC
7 - Ground
8 - Full Tank Blow Down
9 - Ground
10 - Actuator power
11 - Actuator power
12 - 0-10 VDC Out
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