AERCO SWDW68 U-Tube Double-Wall Heaters w/ECS - Manual (Page 32)

AC-105 INSTRUCTIONS - ECS & CXT-E
4-4 Rev B Mar 2013
Table 4-1. Temperature Controller Operating Controls, Indicators and Displays
CONTROL /
INDICATOR MEANING FUNCTION
OP1 Output 1 Indicator OP1 lights when a 4-to-20 mA signal is supplied to the
Actuator, or when the valve position is above 0%.
OP2 Output 2 Indicator Not used for the ECS application
SP2 Setpoint 2 Indicator Not used for the ECS application
REM Remote Setpoint
Indicator REM lights when the ECS is set up to be controlled by
a Remote (MODBUS) signal.
REM will flash when MODBUS communication is
active.
AUTO
MAN
Auto/Manual Button
and Indicators Pressing the button toggles the Controller between the
automatic (AUTO) and manual (MAN) modes.
• AUTO lights when in the automatic mode.
• MAN lights when in the manual mode.
When entering the MAN mode, the Valve position is
reset to 0%.
RUN
HOLD
Run/Hold Button
and Indicators
Not used for ECS application
Page Button Press the Page button to select a new list of
parameters
Scroll Button Press the Scroll button to select a new parameter in a
list
Down Button Press the Down button to decrease the value shown in
the lower display
Up Button Press the UP button to increase the value shown in the
lower display
4.3.2 Adjusting the Over-Temperature Alarm Limit
Adjust the over-temperature alarm limit setting using the controls and displays illustrated in Figure 4-4
and described in Table 4-2. Adjust the over-temperature alarm limit as follows:
OVER-TEMPERATURE ALARM LIMIT ADJUSTMENT
The over-temperature alarm limit setting is adjusted using the controls and display on the Over-
Temperature Switch. The controls and display are illustrated and described in Figure 4-4 and Table 4-2. If
necessary, over-temperature alarm limit adjustment is accomplished as follows:
1. With the Control Box door open, set the ON/OFF POWER switch on the right side to the ON position.
2. Press the SET button on the Over-Temperature Switch. SP will appear in the display.
3. Press the SET button again. The current over-temperature limit value stored in memory will be
displayed (default = 160°F).