Control of energy recovery system

Start-up

On initial start-up, after after power failure,  the energy recovery system will (after a delay, defined by parameter SYS-01) be enabled before the energy recovery assumes normal control.


Description

Default value

SYS-01: Plate start-up delay

5 sec


Control of energy recovery system

The module can work in several configurations. In a typical sequencing application the module receives an energy recovery control signal (ERCCtrlSig) from the control strategy module.

The energy recovery output signal with minimum and maximum limitation values, defined by parameters ERS-01 and ERS-02, will command the heat Plate as shown in the next figure.



Description

Default value

ERS-01: minimum energy recovery control signal

0 %

ERS-02: maximum energy recovery control signal

100 %


The ERT input is used to connect a freeze protection low limit sensor, mounted in the exhaust air duct. The minimum and maximum values of the setpoint are limited by parameters ERT-01 and ERT-02, as shown in the next figure.

For display purpose of the calculated setpoint is parameter DISP-01 available.



Description

Default value

ERT-01: energy recovery temperature low setpoint

10 °C

ERT-02: energy recovery temperature high setpoint

15 °C

OAT-01: outside air temperature minimum value

-10 °C

OAT-02: outside air temperature maximum value

10 °C


This module calculates the actuator position as shown in the next figure.



Description

Default value

ERT-03: P-band energy recovery temperature control

10 K

ERS-01: minimum energy recovery control signal

0 %

ERS-02: maximum energy recovery control signal

100 %