EXAECO
®
HIGH EFFICIENCY RECOVERY UNIT
OPERATING AND COMMISSIONING INSTRUCTIONS
MS-CDF-002
Ind D
Maj. 02/11/2018
Créé par : JC
Validé par : AR
Page 8/49
III. GENERAL FONCTIONNING
III.1. GENERALITE
EXAECO
®
range
are programme of double-flow units with high efficiency recovery, self-regulating recovery meant for office
and industrial installations. Its performance is greater than 80%.
EXAECO
®
ELITE
: (example EXAECO ELITE HC) manage on or two coil
H
= Heat water coil /
E
= Electrical /
C-CO
=
Cooling or changeover Coil /
HC
= Hot water coil + cooling water coil /
EC
=Electrical b cooling water coil /
HDX
=
Hot water coil + DX coil R410A /
EDX
= Elec Cooling DX coil R410A /
DX-DXR
= Colling DX coil or changeover
DX coil R410A.
The EXAECO® standard allows the management of the blowing temperature with external compensation below 13 ° C (air
law) and depending on the recovery above 13 ° C.
III.2. ANALYSE FONCTIONNELLE
Except SEASON version
Starting sequence :
o
The supply air fan starts and the fresh air register opens.
o
The extract air fan starts and the extract air register opens
o
Temperature regulation starts defined in the regulation mode set. Electric heater (if set), starts with airflow controller.
Pumps start.
o
After a defined time, alarms management function is activated. Installation is in normal mode.
Start conditions :
Installation starts when one of these conditions are filled:
o
Timer normal or reduced are activate
o
Manual start is activated with controller
o
One of the digital input for extended operation is activated.
Stop sequence :
Installation stops with following process:
o
Deactivation of the alarm management function.
o
Electric heater stops (if set).
o
After a defined time (individually defined for each fan) fans are stopped.
o
Supply and return air registers are closed .
o
Signals toward actuator are reset and pumps closed
Stop conditions :
Installation stops when one these conditions are filled:
o
Timers normal or reduced are not activated and digital input for extended operation is not activated.
o
Digital Input for External stop is activated.
o
Manual stop is activated with controller
o
An alarm configured with stop function is activated. Installation will automatically start when alarm is reset.
