17
16
Unit operation
On startup, the start screen will be visible on the unit controller’s
external display. The first line is the unit model name followed by the date
and time (24h clock) and the current system operation mode.
H2800Xi
YYYY-MM-DD
HH : MM
SYSTEM: STOPPED
1 Access rights
Go to
Access Rights
by using the UP/DOWN arrow buttons. Select
by pressing the RIGHT arrow button.
Temperature
Air Control
Time settings
→
Access Rights
2 Log on
Choose
Log on
. Select by pressing the RIGHT arrow button.
→Log on
Log off
Change password
3 Password
Enter password
1111
by pressing OK followed by the UP/DOWN arrow
buttons. Select next digit by pressing the RIGHT arrow button. Press OK
when all 4 digits have been entered.
Log on
Enter password xxxx
Actual level: None
This unit has the following operation modes:
• Starting up: The unit is performing the start sequence
• Normal run: Normal speed or reduced speed ventilation active
• Stop fan: The unit is performing the stop sequence
• Stopped: Ventilation stopped
• Recirculation: Exhaust air fan is stopped, Supply air fan is active and BPM module is open, room air is recirculated through the unit (Only available
if unit is equipped with BPM module).
The unit will automatically change from one operation mode to another based on start and stop conditions. The unit will remain stopped until a start
condition is met. If the unit is in normal run or recirculation, it will run until a stop condition is met.
System operation modes
The unit, when powered, will start and run when any of the following condition is met:
1. The programmable schedule for normal speed or reduced speed is active (more details in the “Time settings & schedule” section).
2. The extended run digital input is active (more details in the “Extended run” section).
3. If a CO2 sensor is equipped and configured on the dedicated analog input channel, the unit will start if the CO2 level reading reaches the preset
lower limit value (more details in the “Demand controlled ventilation by CO2 level” section).
4. If a BPM module is equipped and the recirculation digital input / timer schedule 5 is configured, the unit will start if the recirculation digital input
is active (More details in the “Recirculation” section).
Once any of the conditions listed above is met, the unit will initiate the start sequence:
1. Operation mode changes from
stopped to starting up
2. The digital outputs for the fresh air damper and the exhaust air damper are activated
3. The exhaust air fan and the supply air fan will start after a preset time. Note that the delay for each fan to start might be different meaning that
one can come on before the other.
4. Operation mode changes from
starting up to normal run or recirculation.
Unit Start conditions and sequence
The unit will be stopped when any of the following condition is met:
1. None of the starting conditions are met.
2. The external switch digital input is active. More details in the “External switch” section
3. The fire alarm digital input is active. More details in the “Fire alarm” section
4. A systems alarm is active and forcing the unit to stop. More details in the “Alarm handling” section.
Once any of the condition listed above is met, the unit will initiate the stop sequence:
1. Operation mode changes from
normal run or recirculation to stop fan
2. The exhaust air fan and the supply air fan will stop after a preset time. Note that the delay for each fan to stop might be different meaning that
one can turn off before the other.
3. The digital outputs for the fresh air damper and the exhaust air damper are deactivated
4. All other remaining digital and analog outputs are deactivated.
5. Operation mode changes from
stop fan to stopped.
Unit Stop conditions and sequence
Controller display & start screen
Unit operation
(Cont'd)
The unit external display is used to configure & commission the unit. It is
also used to troubleshoot and handle alarms generated by the controller.
Navigate through the menus from the start screen by using the:
• UP/DOWN arrows to navigate the menus
• LEFT/RIGHT arrows to access and exit submenus
• OK button to access the changeable parameters
• UP/DOWN arrows to change the value of a parameter
• OK button to accept changes to a parameter
• Cancel button © to clear parameter values
• Alarm button to access the alarm log
There are also 2 LED by the arrow buttons. The top one by the bell
symbol will blink red when an alarm is triggered and the bottom one
by the pencil symbol will blink yellow when a menu with changeable
parameters is accessed.
In order to change parameters, access rights are required. Follow the instruction below to logon as administrator in order to change unit parameters.
Access right
Note that the Starting up sequence might take up to a minute. Once the unit is in normal run or recirculation it may take another minute to
reach the airflow set point.
Содержание fantech ECHO 2800Xi Series
Страница 18: ...35 34 Notes Notes...