Orion System System Manager TS II In-House - Manual (Page 68)

Zone
Zone
VAV/Zone Controllers
SMTS II Technical Guide 68
Alarm Settings
Touch the
< Alarm Settings>
button to access the Alarm
Settings Screen.
Cooling Setpoint Alarm Offset
The VAV/Zone controller can be set up to generate an alarm anytime the
box goes into the Occupied Mode and the Space Temperature exceeds
the user-defi ned alarm limits for a user-defi ned period of time. A High
Temperature Alarm Setpoint is created by adding the Cooling Setpoint
Alarm Offset to the current Cooling Setpoint. If the Space Tempera-
ture exceeds this limit for a period defi ned by the Alarm Delay Period
Setpoint, the controller can generate an alarm callout if all the optional
hardware components required for this to occur are installed. High limit
= 50ºF; Low limit = 1ºF
Heating Setpoint Alarm Offset
The VAV/Zone controller can be set up to generate an alarm anytime the
box goes into the Occupied Mode and the Space Temperature exceeds
the user-defi ned alarm limits for a user-defi ned period of time. A Low
Temperature Alarm Setpoint is created by adding the Heating Setpoint
Alarm Offset to the current Heating Setpoint. If the Space Tempera-
ture exceeds this limit for a period defi ned by the Alarm Delay Period
Setpoint, the controller can generate an alarm callout if all the optional
hardware components required for this to occur are installed. High limit
= -1ºF; Low limit = -50ºF
Heat/Cool Alarm Delay Period
As mentioned above, if you confi gure the controller to generate Space
Temperature alarms, this is the amount of time after the box goes into
the Occupied Mode that the temperature must be outside the alarm limits
before an alarm is generated. A Space Temperature Alarm is generated
when the Space Temperature is out of the specifi ed range for this amount
of time. High limit = 300 minutes; Low limit = 1 minute
Alarms
Space CO2 Low Level Reset Limit
The Space CO
2
Low Level Reset Limit is the value at which the CO
2
ventilation restart starts. High limit = 2000 PPM; Low limit 0 PPM
Space CO2 High Level Reset Limit
The Space CO
2
High Level Reset Limit is the value at which the CO
2
ventilation reset stops. High limit = 2000 PPM; Low limit 0 PPM
OA CFM Low Level Reset Limit
Minimum OA CFM content required for occupied operations in the
space. High limit = 2000 PPM; Low limit = 0 PPM
OA CFM High Level Reset Limit
Maximum OA CFM content required for occupied operations in the
space. High limit = 2000 PPM; Low limit = 0 PPM
VAV/Zone Damper/Airfl ow Setpoints & Alarm Settings
Figure 132: Damper/Airfl ow Setpoints Screen 3
Figure 133: Damper/Airfl ow Setpoints Screen 4
Heat Mode Distribution Effectiveness
This value represents how effi cient the space is in receiving Outdoor
CFM content. Enter the Zone Air Distribution Effectiveness as shown
in ASHRAE Table 6-2. High limit = 100%; Low limit 1%
Cool Mode Distribution Effectiveness
This value represents how effi cient the space is in receiving Outdoor
CFM content. Enter the Zone Air Distribution Effectiveness as shown
in ASHRAE Table 6-2. High limit = 100%; Low limit 1%
Figure 134: Alarm Settings Screen