Johnson Controls YVAHP072B31S, Service Manual

Page: 491 / 1796

Service Manual
1-475
INSTALLATION
5. Demand Control Function (*1)
At peak demand, electrical consumption is cut by the external demand control signal.
Only the input from terminal one is available at the external demand signal.
The operational mode of a selected group will be changed by the demand signal as follows:
Demand Signal ON Demand Signal OFF
Stop (*2)
Indoor Unit will stop (Remote control
operation prohibited).
Return to the previous operation
condition. (*3)
Run Mode Shift
(*2) (*4)
COOL or DRY switch to FAN
(Remote control operation prohibited)
HEAT switch to STOP
(Remote control operation prohibited)
Operation Unit
Capacity Control
(*5) (*6) (*7) Control the value of outdoor unit capacity in the
setting value.
(Setting Value: 100/90/80/70/60/50/40/0%)
Cancel the capacity control.
(*1): Do not set “STOP” or “Run Mode Shift” when using simultaneously with other mini central controller.
When setting outdoor unit capacity control, set one of the mini central controller and do not set the
others.
(*2): Setting is only possible for Stop or Run Mode Shift. It is not possible to set multiple contact points.
(*3): Do this when “AUTO” operation is carried out, or “Fixing Operation Mode” is enabled at “Optional
Function Setting”.
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optional function setting is enabled.
(*5): The outdoor unit capacity control can be set to multiple contact points. When there is a signal input in
multiple contact points, the control with the most contact points will have the highest priority as follows
(Input 1 > Input 2 > Input 3 > Input 4).
(*6): The control capacity target applies to outdoor units only. If the desired target is different than the one
selected, contact you contractor for adjustments.
(*7): It is possible to control using a schedule without using demand control.