393930-2 Rev 0: 01.04.2020
5 |
P a g e
2.3
Air heater (after-heater)
The air heater (or after heater) heats up the air after the air has passed the heat exchanger. It must be enabled
and configured in the Air heater menu.
The heater can be None or Electrical.
The electrical heater has a 0
–
10V analogue output and the heater relay is turned on when the heater is
needed.
2.4
Defrosting
Defrosting is done for 6 minutes every hour. During defrost, the supply fan is stopped, the exhaust fan is
running at MIN speed, the air heater is off and rotor speed is normal.
•
Mode 1 is for low humidity and starts at -20
⁰
C
•
Mode 2 is for normal humidity and starts at -15
⁰
C
•
Mode 3 is for high humidity and starts at -10
⁰
C
After defrosting, the air heater is first started when fans are up and running
2.5
User selection functions
Activating the User function digital input can trigger different functions.
The air handling unit will perform this operation during the selected period and overriding the other user
settings including week program settings.
Function
Duration
Supply air
level
Exhaust fan
level
None
No action
-
-
Fan boost
Input active
MAX
MAX
Supply air (increase
supply air)
15 min – 8h
Off, MIN, NORM,
MAX
NORM
Extract air (increase
extract air)
15 min – 8h
NORM
Off, MIN,
NORM, MAX
Extern alarm
15 min – 8h
Off, MIN, NORM, MAX
2.6
Cooker hood function
There is a separate digital input for the operation together with a turned-on cooker hood extractor.
Function
Duration
Supply air
level
Exhaust fan level
None
No action
-
-
Cooker hood
Input active 0-100%
0-100%
2.7
Rotor control
The rotor heat exchanger is always started some minutes before the heater. This ensures the rotor is first
started when the rotor alone is insufficient.
2.8
Party mode
The user can activate a party mode. It is used for increased ventilation with many people in the ventilated
area. Fan speed is set to MAX, the user can set it to MIN or NORM afterwards.
The existing set point is used. The user can change the set point during active party mode.
Party mode is automatically stopped when the party timeout period is over. Default timeout is 4 hours, it can
be changed after the activation. Party timeout menu is hidden when party mode is off.
2.9
Away mode
The away mode is for periods with low ventilation needs like away on holiday etc.
At activation, fan speed is set to MIN and set point to 15°C. Both fan speed and set point can be changed
afterwards. The Away mode must be turned off manually.
Fan speed and set point returns to the settings when the away mode was started.
Summary of Contents for AHU 200B
Page 1: ...User manual and Installation Guide InoVent AHU 200 700 ...
Page 2: ...393930 2 Rev 0 01 04 2020 2 P a g e ...
Page 31: ...393930 2 Rev 0 01 04 2020 31 P a g e ...
Page 41: ...393930 2 Rev 0 01 04 2020 41 P a g e ...
Page 72: ...393930 2 Rev 0 01 04 2020 72 P a g e Ensy AS Mohagasvingen 1 N 2770 JAREN http www ensy no ...