9
HOW TO CHANGE THE SETPOINT
HOW TO CHANGE a parameter value
LIST OF PARAMETERS
Here is a list of the parameters the value of which can be changed in the programming mode, as well as their ranges.
Display
Symbol
Parameter
Range
Master-Bilt’s
Setting
SP
Temperature Set Point
SPL…SPH
30
°F
HYS
Temperature Differential
1 to 255°F
5
°
SPL
Minimum Temperature limit setpoint
-50…SPH
27
°F
SPH
Maximum Temperature limit setpoint
SPH…120°
55
°F
AHA
High Temperature alarm
-50…120°
60
°F
ALA
Low Temperature Alarm
50…120°
0F
ATD
Temperature Alarm Delay
0…120min
30min
DFR
Number of Defrost Cycle per 24hr
0…24
6/day
DLI
Defrost Termination Temperature
-50…120°
55
°F
DTO
Maximum Defrost Duration
1…120min
30min
ELECTRICAL CONNECTIONS
The controller is provided with screw/push terminal block to connect cables with a cross section up to 2,5 mm
2
. Before
connecting cables make sure the power supply complies with the control’s requirements. Separate the probe cables
from the power supply cables, from the outputs and the power connections. Do not exceed the maximum current
allowed on each relay, in case of heavier loads use a suitable external relay or contactor’s.
PROBE CONNECTIONS
The probes shall be mounted with the bulb upwards to prevent damages due to casual liquid infiltration. It is
recommended to place the thermostat probe away from air streams to correctly measure the average room
temperature. Place the defrost termination probe among the evaporator fins in the coldest place, where most ice is
formed, far from heaters or from the warmest place during defrost, to prevent premature defrost termination.
