S&P UTBS PRO-REG Series, Руководство пользователя

Страница: 47 / 72

47
11.7. MIXING MODULE CONTROL (3 WAYS)
If it exists a mixing module instalated, it is necessary to specify the control type that it want
to perform on it. It is possible to select between 3 control modes:
11.7.1. Without mixing module
Factory confi gurated by default, option for equipment installations
100% outside air or 100% indoor air.
11.7.2. CO
2
control
The management of the dampers depends on the quality of indoor air
(it is necessary to install CO
2
sensor). When the air quality is low (high
level of CO
2
), the system gives priority to the entrance of outside air.
As the CO
2
level approaches to the introduced value as setpoint, it is
closing the outside air damper, at the same time that opening the re-
circulated air.
11.7.3. Temperature control
The management of the dampers depends only on the existing thermal
demand at all times and temperature of outside and return air.
The PRO-REG controller manages the opening/closing of the dampers
to obtain maximum energy savings, without consider the air quality
provided in the local. (Attention: With this operating mode exists risks
to obtain a low quality indoor air.)
11.7.4. CO
2
control and temperature
The position of the dampers is done by simultaneous analysis of thermal
demand and air quality (signal from the CO
2
). The controller tries to res-
pond to the request of maintain the indoor air quality (ppm CO
2
) limiting
at the same time the supply temperature.
11.8. CONTROL OF ISOLATION DAMPER
In the case of use the isolation damper, it is not necessary to perform an specifi c confi gu-
ration nor enable the functionability in the unit. It is only necessary to install the dampers
and wiring, as indicated in the MIXING DAMPER INSTALLATION section.
When you start the unit the damper will open. To stop the unit, it will stop.