Publicité
CALIBRATION PROCEDURE
This section describes the calibration procedure for a primary/slave
installation. Slave units allow an independent control of additional air
inlets. The PF-6 leads you through the procedure by gradually increasing
the room temperature to simulate the complete operation of the
temperature controller from the minimum ventilation cycle up to the last
ventilation stage. Each time the room temperature reaches a step point
temperature, the PF-6 waits for you to adjust the air inlet panels to the
required position for this step point. You can determine the required
position either by measuring the static pressure in the room or by
calculating the opening that will maintain the desired air speed at the
inlet based on the fan airflow.
Note that when you advance to a new step point in the sequence, the
PF-6 can position the inlets according to the position currently stored in
memory. Minor adjustments can then be made to an existing calibration.
The calibration is saved only at the end of the sequence when the word
END is displayed.
1. Turn the function selector to PROGRAMMING function then set
internal switch #7 to ON on all PF-6 units. If the calibration led on a
unit is flashing, set switch #7 to OFF and then back to ON. Air inlets
are completely closed and the display shows CLO. Then OFF is
displayed, alternating with "S. 0" (step 0). The temperature
controller operates according to the set point value minus 0.4°F
0.2°C).
2. Use the adjustment knob to manually adjust the opening value on
each PF-6 unit for this reference value – CLO to close, OPN to open,
AUT to retrieve the previously calibrated position.
STEP 0
0.4
F
o
(0.2
C)
o
Temperature Set Point
Room Temperature
PF-6
PF-6.rev.14
21
Publicité
