Manual

7/16 CC1B-Hints-en Preliminary 04.02.2003 HVAC Products
2. Hints
2.6 Manual operation continued…
Modulating burner, 3-Position output
Press
and hold for 5 seconds, and release.
The red LED above the manual icon turns
on to indicate that the controller is now in the
manual mode.
Relay 2 and relay 3 will hold their current state,
(energized or de-energized) that they were in until
another key is pressed.
W hen the
W hen the
is pressed: is released:
-Relay 3 is -Relay 3 is
energized de-energized
-Decrease icon -Decrease icon
turns on turns off
-N.O. contact Q-Y2 -N.O. contact Q-Y2
closes, to drive the opens, to hold the
modulating device modulating device
down, which where it is, which
decreases the holds the
firing rate firing rate
of the burner. of the burner.
W hen the
W hen the
is pressed: is released:
-Relay 2 is -Relay 2 is
energized de-energized
-Increase icon -Increase icon
turns on turns off
-N.O. contact Q-Y1 -N.O. contact Q-Y1
closes, to drive the opens, to hold the
modulating device modulating device
up, which where it is, which
increases the firing holds the firing
rate of the burner. rate of the burner.
Modulating burner, Modulating output
Press
and hold for 5 seconds, and release.
The red LED above the manual icon turns
on to indicate that the controller is now in the
manual mode.
Relay 2 and relay 3 will hold their current state,
(energized or de-energized) that they were in until
another key is pressed.
By design, the 0 output starts driving the modulating device to low
fire, but if you promptly press the
after the red LED above the hand
icon turns on, you can prevent the from going all the way.
W hen the
When the
is pressed, is released,
the output value output value,
starts increasing, stops increasing,
and the output, and the output,
to terminals to terminals
X1+ and X1- X1+ and X1- also
starts increasing, stops increasing,
the same amount, and holds
and increases the current
the firing rate firing rate
of the burner. of the burner.
W hen the
When the
is pressed, is released,
the output value output value,
starts decreasing, stops decreasing,
and the output, and the output,
to terminals to terminals
X1+ and X1- X1+ and X1- also
starts decreasing, stops decreasing,
the same amount, and holds
and decreases the current
the firing rate firing rate
of the burner. of the burner.
To exit manual operation
Press
for 5 seconds, and release.
The red LED above the hand symbol
turns off,
and the controller returns to the automatic mode.
On Modulating burners, with modulating output,
the output to terminals X1 and X2,
also returns to automatic operation.
On Modulating burners, with 3-position output,
the output to relay 2 and relay 3,
also returns to automatic operation.