Topvex FR800, FR1600, FR3800
Operation and Maintenance Instructions
Systemair Inc.
11
Main menu item
Sub-menu item 1
Sub-menu item 2
Explanations
Frost
protection
Actual: °F
Shows
the actual water
temperature in the water heating
coil. (Only visible for HW units).
Exhaust air
temp
Actual: °F
Shows
the actual exhaust air
temperature.
Efficiency
Exchanger
Actual: %
Shows
the actual heat recovery
efficiency.
The function calculates the
heat exchangers temperature
efficiency in % when the output
signal to the exchanger is higher
than 98% and the outdoor
temperature is lower than 50
°
F.
When the control signal is
lower than 98% or the outdoor
temperature is higher than 50
°
F
the display will show 0%.
→Air Control
This menu option becomes
visible if the unit is configured
for “Flow control” or “Pressure
control”.
Flow control
SAF
Actual: CFM
Setp.: CFM
Shows
airflow for the supply air
fan (constant airflow control).
Only visible if the unit is
configured for
Flow control.
Flow control
SAF
Setp 1/1: 647.4
CFM
Setp 1/2: 323.7
CFM
Set
the normal (1/1) and
reduced (1/2) airflow for the
supply air fan.
Outdoor
comp.Setp. 1
-4°F = 5.9 CFM
32°F = 0 CFM
Act. Comp: 0
CFM
Set
the SAF airflow
compensation for the settable
outdoor temperature. The
outdoor compensation is linear
and is set using two parameter
pairs which give the value of the
compensation at two different
outdoor temperatures. The
compensation can be positive or
negative.
Shows
the actual airflow
compensation.
Flow control
EAF
Actual: + INF
CFM
Setp.: CFM
Shows
airflow for the extract air
fan (constant airflow control).
Only visible if the unit is
configured for
Flow control.
