4.1. MANUAL OVERRIDE SWITCH
The rotary switch, shown below, is used to select manual override functions.
THIS SWITCH CAN BE SET IN ANY MODE INCLUDING REVIEW MODE.
IT IS IMPORTANT TO REMEMBER TO SWITCH BACK TO AUTO AFTER THE
MANUAL OVERRIDE FUNCTION HAS BEEN USED.
WHEN THE SWITCH IS IN AN OVERRIDE CONDITION THE DISPLAY WILL
FLASH AND THE OVERRIDE CONDITION WILL BE INDICATED (EXCEPT IF IT
IS OVERRIDDEN OFF).
PUMP EXERCISE WILL ONLY TAKE PLACE WHEN THE CONTROLLER IS IN
AUTO OR OVERRIDDEN TO STANDBY.
It is important to remember to switch back to auto after the manual override function
has been used.
The override modes are as follows:
Auto mode: Allows the controller to operate on the time schedule and
uses all of the set parameters.
Day mode: Removes the effect of the time schedule and makes the
controller run at the day set value constantly.
Night mode: This mode overrides the controller time schedule and
decreases the calculated flow temperature by the value
set in night setback.
Boost mode: This mode overrides the controller time schedule and
increases the calculated flow temperature by the value
set in boost.
Standby mode: This causes the actuator to close and turns the controller
off, but it does leave the frost protection running. The
pump exercise will also remain active
Close Actuator: Forces the actuator to close or turns the boiler off.
Controller off: Causes both actuator outputs to be off and the actuator to
stop. In this mode no control function is operative
including frost protection and pump exercise.
Open Actuator: Forces the actuator to open or the boiler on.
CSC USER GUIDE October, 03
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