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NOTE: The serial numbers can be found inside the control doors
of the unit as well as on the actuator itself. If an actuator is re-
placed in the field, it is a good idea to remove the additional peel-
off serial number sticker on the actuator and cover up the old one
inside the control doors.
CONTROL ANGLE ALARM CONFIGURATION (C.ALM)
(BP.CF = 2)
The building pressure actuators learn what its end stops are though
a calibration at the factory. Field-installed actuators may be cali-
brated in the Service Test mode. When an actuator learns its end
stops through calibration, it stores the control angle. The actuator
will resolve this control angle and express its operation in a per-
cent (%) of this learned range.
If a building pressure actuator has not learned a sufficient control
angle during calibration, the actuator will be unable to control
building pressure. For this reason, the building pressure actuators
used in the P Series control system have configurable control an-
gle alarm low limits in the Building Pressure Actuator Configura-
tions group, ACT.C
BP.1 and BP.2. (C.A.LM). If the control an-
gle learned through calibration is less than C.A.LM, an alert will
occur and the actuator will not function.
NOTE: This configuration does not typically need adjustment. It
is configurable for the small number of jobs which may require a
custom solution or workaround.
Smoke Control Modes
There are four smoke control modes that can be used to control
smoke within areas serviced by the unit: Pressurization mode,
Evacuation mode, Smoke Purge mode, and Fire Shutdown. Evac-
uation, Pressurization and Smoke Purge modes require the con-
trols expansion module (CEM) board. The Fire Shutdown input is
located on the main base board (MBB) on terminals TB201-1 and
2. The unit may also be equipped with factory-installed return/
supply air smoke detector that is wired to TB201-1,2 and will shut
the unit down if a smoke condition is determined. Field-monitor-
ing wiring can be connected to terminal TB201-1 and 2 to monitor
the smoke detector. Inputs on the CEM board can be used to put
the unit in the Pressurization, Evacuation, and Smoke Purge
modes. These switches or inputs are connected to TB202: Pressur-
ization — TB202-18 and 19, Evacuation — TB202-16 and 17,
and Smoke Purge — TB202-14 and 15. Refer to Major System
Components section starting on page 133 for wiring diagrams.
Each mode must be energized individually on discrete inputs and
the corresponding alarm is initiated when a mode is activated. The
fire system provides a normally closed dry contact closure. Multi-
ple smoke control inputs sensed by the control will force the unit
into a Fire Shutdown mode.
FIRE SMOKE INPUTS
These discrete inputs can be found on the local display under
Inputs
FIRE.
ITEM
EXPANSION
FIRE
FIRE-SMOKE INPUTS
FSD
Fire Shutdown Input
PRES
Pressurization Input
EVAC
Evacuation Input
PURG
Smoke Purge Input
Fire Shutdown Mode
This mode will cause an immediate and complete shutdown of the
unit.
Pressurization Mode
This mode attempts to raise the pressure of a space to prevent
smoke infiltration from an adjacent space. Opening the economiz-
er (thereby closing the return air damper), shutting down power
exhaust, and turning the indoor fan on will increase pressure in the
space.
CCN
WRITE
RANGE
POINT
STATUS
ALRM/NORM
FSD
forcible
ALRM/NORM
PRES
forcible
ALRM/NORM
EVAC
forcible
ALRM/NORM
PURG
forcible
Evacuation Mode
This mode attempts to lower the pressure of the space to prevent
infiltrating an adjacent space with its smoke. Closing the econo-
mizer (thereby opening the return-air damper), turning on the
power exhaust, and shutting down the indoor fan decrease pres-
sure in the space.
Smoke Purge Mode
This mode attempts to draw out smoke from the space after the
emergency condition. Opening the economizer (thereby closing
the return-air damper) and turning on both the power exhaust and
indoor fan will evacuate smoke and bring in fresh air.
AIRFLOW CONTROL DURING THE FIRE/SMOKE MODES
All non-smoke related control outputs will get shut down in the
fire/smoke modes. Those related to airflow will be controlled as
explained below. The following matrix specifies all actions the
control will undertake when each mode occurs (outputs are forced
internally with CCN priority number 1 - "Fire"):
DEVICE
PRESSURIZATION PURGE EVACUATION FIRE SD
Economizer
Indoor Fan — VFD
ON/FSO
Power Exhaust
VFD-Actuator
Heat Interlock Relay
NOTE(S):
a. "FSO" refers to supply and exhaust VFD fire speed override configurable speed.
RELEVANT ITEMS:
The economizer's commanded output can be found in Outputs
ACTU
ECN.C.
The configurable fire speed override for supply fan VFD is in
Configuration
SP
SP.FS.
The supply fan relay's commanded output can be found in Out-
puts
FANS
S.FAN.
The supply fan VFD's commanded speed can be found in Out-
puts
FANS
S.VFD.
The configurable fire speed override for exhaust VFD/actuator is
in Configuration
BP
The exhaust fan VFD's commanded speed can be found in Out-
puts
FANS
E.VFD.
The power exhaust actuators command positions can be found in
Outputs
ACTU
BPx.C.
Indoor Air Quality Control
The indoor air quality (IAQ) function will admit fresh air into the
space whenever space air quality sensors detect high levels of
CO
. When a space or return air CO
2
unit control, the unit's IAQ routine allows a demand-based control
for ventilation air quantity, by providing a modulating outside air
damper position that is proportional to CO
damper position is varied between a minimum ventilation level
(based on internal sources of contaminants and CO
than from the effect of people) and the maximum design ventila-
tion level (determined at maximum populated status in the build-
ing). Demand Controlled Ventilation (DCV) is also available
when the ComfortLink unit is connected to a CCN system using
ComfortID™ terminal controls.
This function also provides alternative control methods for con-
trolling the amount of ventilation air being admitted, including
fixed outdoor air ventilation rates (measured as cfm), external dis-
crete sensor switch input, and externally generated proportional
signal controls.
The IAQ function requires the installation of the factory-option
economizer system. The DCV sequences also require the con-
nection of accessory (or field-supplied) space or return air CO
sensors. Fixed cfm rate control requires the factory-installed out-
door air cfm option. External control of the ventilation position
87
100%
100%
0%
ON/FSO
OFF
a
a
OFF
ON/FSO
a
ON/FSO
ON
ON
OFF
B.V.A
BP.FS.
sensor is connected to the
2
level. The ventilation
2
2
0%
OFF
a
OFF
OFF
levels other
2
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Troubleshooting
