Specifications

220 PRT-CTRL-SE Protege System Controller Reference Manual | PRT-CTRL-SE
Dehumidification Stage 1 PGM
The dehumidification stage 1 PGM is activated when the RTHP has a requirement for dehumidification. The
dehumidification process will typically open the first stage of the hot gas reheat valves located in the RTHP unit.
FN001 Dehumid 1
pgm: --000:00
To modify the dehumidification stage 1 PGM, use the settings as explained in section Entering PGM and PGM
Groups (see page 336).
Dehumidification Stage 2 PGM
The dehumidification stage 2 PGM is activated when the RTHP has a requirement for dehumidification and the
humidity is above the hysteresis value plus the setpoint. The dehumidification process will typically open the
second stage of hot gas reheat valves located in the RTHP unit.
FN001 Dehumid 2
pgm: --000:00
To modify the dehumidification stage 2 PGM, use the settings as explained in section Entering PGM and PGM
Groups (see page 336).
Base Data Register
The Base data register is used as the first register in the list of registers used to configure, program and control
the RTHP. The only registers that are not included in the base registers are ones that must link to an analog
input or analog output for external sensors (Temp, Humidity or Dampers). A base data register setting MUST be
set.
FN001 Base data
reg: 00000
To modify the base data register (00000 to 65535, use the keypad as explained in section Entering Decimal
Numbers (see page 333) and press [ENTER].
Base Data Register Offset
Register Offset Register Function
0 Heating Set Point
The heating set point determines the temperature that the RTHP will heat the space to
and is compared with the temperature sensor connected to the Space Temp input.
1 Cooling Set Point
The cooling set point determines the temperature that the RTHP will cool the space to
and is compared with the temperature sensor connected to the Space Temp input.
2 Relative Humidity Set Point
The relative humidity set point determines at what humidity level the RTHP will go in to
a dehumidification cycle and drive the plant to reduce this amount. The relative humidity
set point when exceeded is added or subtracted using the Hysteresis value to prevent
oscillation of the humidity modes.
3 Heating Hysteresis Setting
The heating hysteresis value is added to the heating set point to allow the plant to drive
slightly beyond the set point. This allows specific heating and cooling tuning. Setting a
value of 0 is not recommended as it can cause the system to oscillate between the dead
band the heating modes.