EVCO EPU2BXP1S1 - Manual (Page 52)

EVCO S.p.A. c-pro 3 micro SAVE/ c-pro 3 kilo SAVE | Application Manual ver. 1.0 | Code 144CP3UKSAE104
EVCO
page 52 of 68
Note: If one of the probes is involved in the regulation error in the adjustment of the free-heating is no longer usable
and the ramp of the heating rule on the total of the control differential.
If the adjustment is used for changing the air at the request of a specific probe of CO2 according to the control probe,
the setpoint (PS20) and to the relative differential (PS21) is actuated damper.
Note: If the air quality sensor is in error adjustment is inhibited.
6.8.5 Heating
The COMPLETE solution offers the possibility to use a hot water coil or a set of three electric heaters for space heating
purpose. By setting the PG02 parameter the desired resource is activated along with the relevant alarms connected.
For using this function it is necessary to enable the supply temperature probe setting PH40=1.
During the anti-freeze protection of the recovery heat exchanger, on units without by-pass, the heating source must
be deactivated for protection. The heating source is disabled with a delay defined at the parameter PF09 after the fan
speed has reduced to V1 during the supply fan speed decrease for antifreeze protection. If the antifreeze condition
remains active for further PF09 the supply fan is stopped.
6.8.5.1 Heating with hot water coil
To use the hot water coil for space heating it is required to set the parameter PG02=1. The control is based on the
supply temperature via a supply Set Point (SPHM parameter) and a relevant differential (Pb02 parameter). The coil is
controlled via a proportional-integral algorithm (PI). The control can be only proportional by setting the integral time
Pb03=0.
Set
Point
Temperature
Pb02
Pb02 / 2
100 %
0 %
Heating
Free-heating
SPHM: Set
0%
Supply Pb02: Diff
100%