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2.2.2 Control of exhaust air fan
Fan can be pressure-controlled or flow-controlled.
Fan can include alarm and/or connection for active feedback.
Up to three observable setpoints per fan can be defined as standard for controlled
fans.
Operating time is specified separately. A message can be triggered when a specified
number of operating hours has been reached for the exhaust air fan.
Main menu > AHU > Fan control > Exhaust air fan
Parameter Value Function
Current value xx [l/s], [Pa] Depending on the type of control (Fan control type), for example
current pressure value.
Regulator 0…100 [%] Current regulator value Go to the page for all regulator settings
Output 0…100 [%] Current value of output. Go to page for all analogue output
settings.
Control – Off
– Step 1
–
Step 2
– Step 3
Current fan mode. Go to page for all modulated digital output
settings.
Main menu > AHU > Fan control > Exhaust air fan > Setpoints/Settings
Parameter Value Function
Current fan step
–
–
Off
– Step1
–
Step2
– Step3
Current fan mode.
–
Off
– Step 1 (setpoint 1) active.
–
Step 2 (setpoint 2) active.
– Step 3 (setpoint 3) active.
Current setpoint
exhaust air 0...100 [%]
0...40’000 [l/s]
0...5000 [Pa] Depending on type of control (Fan control type <> Direct or
Dir.var.): Current calculated fan setpoint.
Step 1 0...100 [%]
0...40’000 [l/s]
0...5000 [Pa] Depending on type of control (Fan control type <> Direct or
Dir.var.): Setpoint for step 1 (Time control prog. step >= 1
for controlled fans).
Step 2 0...100 [%]
0...40’000 [l/s]
0...5000 [Pa] Depending on type of control (Fan control type <> Direct or
Dir.var.): Setpoint for step 2 (Time control prog. step >= 2
for controlled fans).
Step 3 0...100 [%]
0...40’000 [l/s]
0...5000 [Pa] Depending on type of control (Fan control type <> Direct or
Dir.var.): Setpoint for step 3 (Time control prog. step = 3 for
controlled fans).
Max. forced
flow 0...(100 – highest setp.) [%]
0...(40’000 – highest setp.) [l/s]
0...(5000 – highest setp.) [Pa] Depending on type of control (Fan control type <> Direct or
Dir.var.): Highest possible setpoint
Setpoint for highest step + Max. forced flow [%], [l/s], [Pa]
(see also Fan compensation).
Min. run time 0…36000 [s] Minimum run time for fan after start.
Deviation alarm
–
Passive
– Active
Conditions: Fan control type <> Direct, Dir.var. or Fixed
freq.
Current mode for setpoint or current value for monitoring
supply air pressure or supply air volume. Go to the page for
supply air monitoring.
– No alarm.
– Alarm activated.
Function
Parameter settings
Quick Start Manual for the EcoHeater Climatix control system
18710-6011 SMCX.151008.00EN
Page 9