EVCO c-pro kilo AHU - Manual (Page 60)

C-PRO KILO AHU APPLICATION MANUAL
Pag. 60
6.8 Post-Heating
This may be performed using one coil (PG01=3) or, alternatively, utilizing electrical
resistances (PG14>0). The post-heating serves two main purposes: integration of heat in
heating or compensation in the dehumidification phase in order to realize the amount of heat
lost (i.e. drop in temperature) during dehumidification.
The regulation takes place on the running delivery SetPoint and the valve can be commanded
using a proportional algorithm (P), or proportional integral (PI). The referenced probe is that
of the delivery temperature.
6.8.1 Post-Heating with coil
The third coil is used to regulate the post-heating valve in analogue mode, the regulation
utilizes twice the heating differential (Pb01).
The activation graph is as follows.
Note. It is necessary to set the position of the analogue output of the valve operating on
parameter HA06. If HA06=0 the indicator will not be enabled on any of the analogue outputs.
Using this coil represents an alternative to using the electrical resistances.
6.8.2 Post-Heating with resistance
Based on the number of configured resistances (PG14=1,2,3) double the regulation
differential (Pb01) must be divided proportionally in order to guarantee uniform startup of
each single stage of resistance. In addition to the number of resistances it is also necessary to
configure the positions of the relative configured digital outputs (parameters HE01, HE02,
HE03).
SetPoint - Delivery
Pb01
Pb01 x 2
T. Delivery
0 %
100 %
Neutral
Zone
Coil for Heating
Coil for
Post-Heating