FULTON PHW 1000, Installation, Operation And Maintenance Manual

Page: 65 / 94

Fulton Heating Solutions, Inc. -- PHW Manual -- 2010-0713
Page 65
8. Advanced Programming Features
a) The Yokogawa UT320 is a sophisticated temperature control with “smart” features that
internally calculates how close the appliance is to setpoint and adjusts it proportionally to
arrive without overshooting. The smart logic must be initiated in the Operating
parameters by setting the following values:
1. Under the Functional Parameters menu, scroll to HY1 and set the value to 20.
2. When the process temperature is within 10°F of the setpoint temperature, scroll
to AT in the Operating Parameters menu and set the value to 1.
3. AT or Auto-Tune will increase the modulation (mod) motor output to 100% until
the process temperature is 2% of input span above setpoint. The output will go to
0% until the process temperature decreases to 2% of input span below setpoint.
4. The control will increase the mod motor again to 100% until the process
temperature is 2% of input span above setpoint. During this time the manual
mode light on the temperature control will be flashing until completed.
5. If the three samples are not the same, an error message will be displayed and
the temperature will drop out of Auto Tune mode. Reset the zero and span
adjustments on the mod motor and/or adjust modulation linkage accordingly.
6. PID values will be set when this procedure is successfully completed.
7. Repeat Step 1 and change the HY1 value back to 10 (standard).
8. Scroll under Operating Parameters to SC (Super Function) and adjust the value
to “on”. This parameter works with Auto-Tune in calculating the target setpoint.
9. Return to Auto mode.
9. Siemens RWF40 Control
a) Fulton can provide a RWF40 Outdoor Reset Temperature Control as an option.
A copy of the Standard program for this control is provided in this manual.
Please reference the RWF40 manual provided with the boiler for programming
instructions.