400895 Topvex FR Operation and Maintenance Instructions
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.
Efciency
Exchanger
Actual: %
Shows the actual heat recovery
efciency.
The function calculates the
heat exchangers temperature
efciencyin%whentheoutput
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
visibleiftheunitiscongured
for“Flowcontrol”or“Pressure
control”.
Flow control
SAF
Actual: CFM
Setp.: CFM
Shows airowforthesupplyair
fan(constantairowcontrol).
Only visible if the unit is
conguredforFlow 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)airowforthe
supply air fan.
Outdoor
comp.Setp. 1
-4°F = 5.9 CFM
32°F = 0 CFM
Act. Comp: 0
CFM
Set theSAFairow
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 theactualairow
compensation.
Flow control
EAF
Actual: + INF
CFM
Setp.: CFM
Shows airowfortheextractair
fan(constantairowcontrol).
Only visible if the unit is
conguredforFlow control.