P-K DURATION II
™ Indirect Domestic Water Heating System
17
4 OPERATION
4.1
LOVE
C
ONTROLLER
Read instructions and understand operation before operating or making adjustments
to the digital temperature controller.
A digital temperature controller (right) positions the valve in response to outlet water temperature. A 4-20
milliamp signal drives the valve actuator. The controller uses a type J thermocouple to sense the outlet domestic
water temperature.
The default screen is shown. PV - the top number (red) - is the
temperature of the water in the P-K COMPACT
®
water heater and SV - the
lower number (green) - is the setpoint.
The index button
changes the parameters displayed on the screen.
The PV line lists the parameter name and the SV line lists the parameter
value.
Press the enter button
to store any value after it is changed.
The up
and down
buttons are used to change the values of
the parameters.
4.1.1
Controller Operation
To change the setpoint, press the up or down buttons to change SV to the desired value. Once the desired value
is displayed, press the enter button to store the value.
The temperature control starts in the operation mode. The following table lists the operating parameters, their
factory default settings, and a description of the parameters function. Parameters are accessed by repeatedly
pressing the index key until the desired parameter is displayed.
Operational Mode
Parameter
Default Value
Description of Parameter Function
Home Screen =
Setpoint
120°F
Setpoint temperature of outlet water
r-S
RUN
Run
– Stop output control.
Must be in run for control to operate
SP
0
Sets the number of digits to the
right of the decimal point
AL1H
20
Alarm 1 High Set Point,
Alarms at se AL1H value
LoC
Off
Set front panel security,
Off = no security, On = settings are locked
OUt1
###
Output value of controller, 0
– 100%
