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UCM SETUP
In Eware, the UCM SETUP display appears as follows:
The following are descriptions of each line on the UCM setup screen.
Unit Type
The possible Unit Types are, VariTrac Rectangular, VariTrane F Rectangular, VariTrane F
Round, Bypass-Damper Rectangular, Bypass Damper Round, Generic, VariTrane D,
VariTrac Round, and VariTrane C.
Editing the unit type will affect the following:
— Heat type (defaults to NONE)
— Fan type (defaults to NONE)
— Unit size (defaults to the smallest unit size)
— Air Valve drive time
— Control algorithm gains (KP , reset times, valve flow constant) for air valve and water
valve.
Note: This means that the unit type should be edited before any of the items in the list
are edited.
Heat Type
The heat type assignment identifies what kind of heat control algorithm is to be used
by the UCM. Possible selections include the following:
— NONE – No heat available
— 1-3 stages electric
— Slow pulse width modulation – Electric (3 min. time base).
— Prop hot water and aux. output
— 1-3 stages hot water/perimeter
If the unit type is edited, the heat type will automatically be changed to NONE. If the
heat type is edited or changed automatically, all 3 of the UCM outputs will be set to
Normally Open and the "Max hot water override" will be canceled if it is active.
VAV-SVX01B-EN
UCM Programming
and Operation
Fan T ype
This entry identifies the fan type to be
controlled by the UCM (None, Series or
Parallel) and shows whether the unit's
fan has been enabled or disabled. The
enable/disable field on this line will not
appear if the unit has a series fan and
only indicates if the parallel fan has
been disabled. The UCM may lockout
the fan on its own if any of the following
apply: control action HEAT; flow
override to drive OPEN, CLOSE, or
MAX; or if the zone temperature sensor
has failed.
NOTE: This line will not appear if the unit
does not have a fan.
BIP Configuration (Default is Generic)
The BIP Configuration interface is for
dry relay contacts. There are two modes
of operation available at TB4-1, Generic
BIP and OCC Detector. In generic mode,
the state of the input is only passed on
from the UCM to Summit. CPL code
must be written in order for Summit to
utilize any signal received from this
generic input. When configured as a
generic input and communications are
active, an occupancy input state will be
reflected by the UCM to the upper level
system controller. The upper level
system controller shall be responsible
for causing any system changes
necessary to provide occupied control.
When configured for generic mode,
loss of communications will result in
the UCM defaulting back into occupied
mode.
In occupancy detector mode, the
absence of a 24 VAC signal at TB4-1
indicates occupancy and the presence
of 24 VAC indicates non-occupancy.
When configured for an occupancy
sensor and communications are active,
an occupancy input state will be
reflected by the UCM to an upper level
system controller. The upper level
system controller shall be responsible
for causing any system changes
necessary to provide occupied control.
When configured for an occupancy
sensor and communications are not
active and occupancy is detected, the
UCM shall transition to the occupied
mode of operation. Upon loss of the
occupancy indication from the
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