VTS Ventus VVS230 [25/55] Controls

Controls Controls

4948

CONTROLS

All controls for VENTUS air handling units is available as optional equipment.

Range of controls is always tted to conguration of the AHU selected in the CCOL4 tool. Controls is capable

to regulate all user parameters: air temperature, its humidity, maximum permissible CO

2

concentration and the

ow rate. Also, controls support preventive and securing functions like protection of the water heater against

freezing or energy recovery system against icing, protection of motors against overloading, monitoring of air

» Change of temperature, airow,

humidity, max CO

» Errors reporting.

» Time schedule setting.

HMI Advanced

» All users and service functions except

visualization

• AHU engaging and disengaging,

• Change of operational modes.

» User function like in HMI Advanced.

» User’s customized visualization (BMS).

Remote visualization

» All user function like in HMI Advanced:

• VTS visualization.

» Clear interface of schedule

programming, presenting unit’s

operating time individually for each day

of the week.

» Energy consumption analysing module.

» Regulation of supply, return air temperature and humidity in handled spaces.

» Control of water coils valves (heater, cooler) and condensing unit.

» Control of rotary heat wheel revolutions, by-pass damper and mixing box, depending on AHU type

and conguration.

» Constant Air Volume (CAV) available as standard.

» Constant static pressure maintenance in trunk duct (Variable Air Volume – VAV) available as option.

» Setting of constant revolutions for each fan individually – VFD setting for AC motors or constant revolutions

percentage in case of EC motors.

CO

regulation

» Protection against hexagonal counterow and cross-ow recuperator icing by means of by-pass damper

opening. Functions realized as optional:

• Optimizing of icing protection function by change of minimum return air temperature threshold downstream

the energy recovery unit vs return air parameters.

• Minimizing of recovery efciency drop during defrosting

» Anti-freezing protection of water heater

• Antifreeze thermostat installed downstream the heater

• Strap-on return water temperature sensor

» Fans overload protection (functions realized by EC motors drives)

» Fire alarm input – AHU immediate disengaging in case of lack of external start permission from overall re