60
CNT-SVX05A-EN
Configuration
Table 48 — Steam valve cycling
Note 1:
Duty cycle is the percentage of the time period the steam valve is open.
Note 2:
The steam valve open position can be set to a partially open position to prevent excessive steam coil
temperatures.
Table 49 — Timers
Note 1:
The occupied bypass time is used for timed override applications when a building automation system is not
present or when the building automation system does not send the occupied (override) request. The timed override
timer is maintained in the unit controller. When the timed override is applicable, the controller reports Occupied Bypass
as its effective occupancy mode.
Table 50 — Diagnostic alarm level
Note 1:
Duct Static Pressure Failure, Duct Static Pressure High Limit, Space Temperature Failure, Discharge Air
Temperature Failure, Unit Shutdown, Low Temperature Detect, and Low Supply Fan Air Flow diagnostics can all be
configured as service required or critical alarm diagnostics. The diagnostics cannot be individually configured.
Location identifier
The Tracer
™
AH.540 includes unit configuration for a location identifier. The
maximum length of the location identifier is 30 characters. You can use Rover™
service tool to download this identifier and easily identify the unit based on its
physical location.
Parameter
Valid range
Default value
Time period
0 to 10 minutes
5 minutes
Duty cycle (Note 1)
0 to 100%
25%
Valve open position (Note 2)
0 to 100%
25%
Parameter
Valid range
Default value
Power up control wait
0 to 1,000 seconds
300 seconds
Maintenance required time setpoint
(based on fan run hours)
0 to 10,000 hours
600 hours
Occupancy bypass timer (Note 1)
Space temperature control
0 to 240 minutes
(1 minute resolution)
120 minutes
Occupancy bypass timer (Note 1)
Discharge air control
0 to 24 minutes
(1 minute resolution)
0 minutes
Parameter
Valid range
Default value
Diagnostic alarm level (Note 1)
• Service required
• Critical alarm
Service required
