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Manual 2100-746

Page 21 of 55

Lead/Lag Rotation

Pressing the Advance Lead button on the home

screen will cause the lead to advance to the next unit.

This may be useful during service and maintenance

procedures.

Lead unit will be determined by an internal timer and

Lead-Lag Changeover Time selected by user. The Lead-

Lag Changeover Time will be conﬁgurable with a range

of 1 to 30 days and can be disabled by setting duration

to 0 for an overall range of 0 to 30. Default setting

for Lead-Lag will be 7 days. Lead unit will rotate after

Lead-Lag Changeover Time expires. At expiration, the

lead unit will rotate to the next available unit (Example:

1 to 2) and once the last address used expires the

lead unit will restart at unit 1. Lead-Lag conﬁguration

will apply to both heating and cooling. If disabled by

setting to 0, the lead unit will only rotate manually by

utilizing the Advance Lead button. Humidiﬁcation and

dehumidiﬁcation will not rotate lead. The lead unit will

always be unit 1. This will allow users to mix dehum

and non-dehum units in a single application. (Dehum

units will need to be placed in the lowest unit address

locations, i.e., unit 1 will always be the ﬁrst dehum

unit when installed for use with the MC5300/5600.)

Number of units used for Lead-Lag will be determined

by user conﬁgurable setting in the Setup Menu.

When Lead-Lag Changeover Time expires and lead unit

is shifted, the call will be satisﬁed and then the lead

unit will rotate. If the Advance Lead button is used to

rotate the lead unit, the call will end, the lead unit will

be shifted and units will restage in accordance with the

demand.

Bard MC5000 Series User Manual

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