EVCO EPK4BHQ1AH Installer manual - Manual (Page 90)

EVCO S.p.A. c-pro 3 NODE kilo AHU | Application manual ver. 1.0
page 90 of 114
Note: the outdoor air temperature sensor must also be enabled (PH40=1). When the control sensors are in error the
function is disabled.
6.17.4 Recovery device status
The heat recovery device may assume one of the following modes of operation:
1. Disabled: the recuperation is not being managed. In this status in the user interface you will see the symbol
“…”.
2. Off: the heat recovery device is off. In the user interface you will see written “ON” when in this state “OFF”.
3. In defrosting mode: the heat recovery devices is off and defrosting is activated (only when heat recovery
device is at cross flow, PG13=1). In this state in the user interface you will see written (and flashing)
“OFF_D”.
4. Off for free-cooling/heating: the heat recovery device is off (because of a request for free-cooling/heating). In
this status in the user interface you will see written “OFF_F”.
5. On: heat recovery device is on. In the user interface you will see written “ON” when in this state “ON”.
6.18 Heating/cooling pumps
A simple method for managing the two circulation pumps (for heating/cooling) is provided. In order to enable the
cooling pump you need to set parameter PG10 to 1. To enable the heating pump you will need to set parameter PG11
to 1 in the Configuration menu.
Based on the requirement you may choose between two controls by going to parameter PP01 (continuous control,
On/Off control).
6.18.1 Continuous control
The continuous control is dependent on the status of the central unit. The pumps will Start-up and shutdown each
time the machine starts up and shuts down. In order to set this control select PP01=0.
6.18.2 Control On/Off
The circulation pumps will activate when there is an actual heating/cooling request which exceeds a Start-up set
(PP02) and they shutdown when the same request falls below a certain shutdown set (PP03). In order to set this
control select PP01=1.
Pr01: Set Point Heat
0 %
| T.Exhaust – T.Outdoor | Pr02:
100%