Genvex OPTIMA 270 Operating Instructions Manual page 16

Menu
ED - Electrical heating
EE - Bypass
16
Description
ED9 - Reheat reg.
The Reheat Cycle function works, as follows: E.g. necessary
output 50% and cycle = 60 sec means that the controller
will switch the reheater on for 30 sec and off for 30 sec.
Note: Please refer to your country-specific regulations on
limitations when adjusting this function.
The modulating reheater function refers to the value
adjusted in selected temperature and chosen sensor for control
(see EC3). To allow the reheater to operate adjust set point
A1=on;The reheater will try to
maintain a steady supply air temperature according to this
set point.
When using the modulating reheater, it will be necessary to
replace the inlet air temperature sensor (T1) in the
ventilation unit with a new temperature sensor installed
upstream of the reheater.
EE1 - Bypass open offset
Here you set the temperature at which the bypass should be
100% open. You set a temperature differential, which
means that if you want the bypass to be 100% open at e.g.
23°C and if the set temperature is
20°C, this menu item should be set to 3°C.
The bypass will open, provided that:
1. The extract air temperature is higher than the outdoor air
temperature.
2. The outdoor air temperature is above the set temperature in
EE2.
Units with modulating bypass
If the temperature rises by 0.5°C above the requested
temperature, the bypass damper will begin to
open. The bypass is 100% open when the temperature
reaches the set point requsted temperature + the
temperature differential set in this menu item.
To get a smooth opening of the bypass, the temperature at
which the bypass is fully open should be set to approx. 3 ºC
above the requested temperature.
Units with on/off bypass
The bypass opens when the temperature reaches the requested
temperature + the temperature differential
set in this menu item.
EE2 - Turn off bypass
To prevent the bypass damper from opening at low outdoor
air temperatures and from blowing cold, unheated air into
the dwelling, use this function to configure the lowest
outdoor air temperature, at which the damper must be
closed. The value is an expression of the greatest
difference that may exist between the requested temperature and
the lowest outdoor air
temperature (offset).
Setting option: Between 0 and 20 °C. If 0°C is selected,
the function is disabled.
Factory setting and
(max. / min values)
ED9: 40 sec
(10-120sec)
EE1: 3 °C
(1 - 10 °C)
EE2: 4°C
(0-20°C)