Omega CN63100 Series User Manual page 56

Dual Output
For heat and cool systems, the heat (O1) and cool (O2) outputs can be used
together in the ON/OFF control. For this operation, set the Cooling Relative
Gain (GAN2) in Cooling Parameter Module (5-02) to 0.0. This places O2 into
ON/OFF Control. In this mode, the ON/OFF Control Hysteresis (CHYS) in
Output Parameter Module (2-OP) applies to both O1 and O2. The Heat/Cool
Deadband (db-2) in Cooling Parameter Module (5-02) sets the amount of
operational deadband or overlap between the outputs.
For these applications, the Control Action (OPAC) in Output Parameter
Module (2-OP) is normally set to reverse (rEv). This sets O1 into reverse
(heat) with O2 always in direct (cool). Cooling output for the CN63300 is
referred to as the second control output.
In controllers with operating system software revision lower than 4.0, the
ON/OFF Control Hysteresis value is not balanced. In these controllers, the
Hysteresis is totally added or subtracted from the setpoint. The revision
number of the controller's operating system software is shown in the
secondary (bottom) display during controller power up.
Figure 23, O1/O2 ON/OFF Control
Software Revision V4.0 or Later
Figure 24, O1/O2 ON/OFF Control
Software Revisions V3.x or Earlier
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