Specifications

PRT-CTRL-SE Protege System Controller Reference Manual | PRT-CTRL-SE 217
RTHP Control Function
The RTHP (Roof Top Heat Pump / Roof Top Heat Pack) programmable function allows the direct control of
multiple stage Roof Top Heat Pumps used for large retail or commercial space temperature control. There is a
substantial number of configuration screens for the RTHP unit and a working knowledge of Air Conditioning and
Temperature Set Point configuration is essential in setting up the correct operation of the programmable
function.
FN001 Func Type
RTHP Control
Use the [1] and [3] keys to scroll the function types until you reach the RTHP control selection and press
[ENTER] to select the function type displayed and proceed to the next programmable option for the RTHP
control function. For more information about the list control data entry refer to the section List Control Data
Entry (see page 335).
Function Mode
The function mode determines how this function operates with the system controller. By default a function is set
to normal operation. Normal operation will mean the function is started if it was running when the system
restarts or is completely powered down (AC Failure and Battery Failure). The Run Once mode of operation will
allow the function to run once and then wait to be stopped and started by the user or operator. Setting the run
once option for the RTHP will result in NO operation being performed and the function stopping a short time
after it is started.
FN001 Func Mode
Normal
Use the [1] and [3] keys to scroll the function mode until you reach the normal selection and press [ENTER] to
proceed to the next programmable option for the RTHP control function. For more information about the list
control data entry refer to the section List Control Data Entry (see page 335).
Enabled Control PGM
Enabled Control PGM is set when the RTHP is to run and will operate only when the enabled PGM is on. If no
enabled PGM is set the RTHP will run continuously. This allows the RTHP to operate only during the times that
the space is occupied. The signal can also be a memory register or a Boolean (bit) value from the selected
memory register.
FN001 Enabled
pgm: --000:00
To modify the occupy PGM, use the settings as explained in section Entering PGM and PGM Groups (see page
336).
Fault PGM
The fault control PGM is set when a fault condition has occurred and the RTHP is to shutdown. This allows the
RTHP to shutdown in the shortest possible time without causing any damage to the system. In the case of a fire
shutdown the system must have a fire PGM programmed.
FN001 Fault
pgm: --000:00
To modify the fault PGM, use the settings as explained in section Entering PGM and PGM Groups (see page
336). To select a data register press the stay key, the following screen will be shown and a memory register
location can be selected. To view the memory register locations refer to appendix memory registers.