Controller for constant volume air handling units (CVAHU), Excel 10
 |
| Room temperature controller for constant volume air handling units, and heatpump
air handlers. |
| For heater, cooler (or heatpump) damper and fan. |
| The XL10 CVAHU controllers support 8 triacs 24Vac (expanded version) or 5 triacs 24Vac plus 3 analogue outputs 4..20mA (analogue version). |
|
| Heating output signal |
PWM, 3-pt floating, 1..4 stages or modulating 0..10V (analogue version only) |
| Cooling output signal |
PWM, 3-pt floating, 1..4 stages or modulating 0..10V (analogue version only) |
| Fan output signal |
1 stage on/off |
| Damper output signal |
3-pt floating |
| Changeover output signal |
1 stage heat/cool |
| Auxiliary output signal |
2 outputs with 1 stage on/off configurable for occupied status or free configurable via
network |
| Control functions |
sequence control for damper/cooling/heating, staged with minimum on/off
times or modulating control with damper minimum position; discharge air limit
control; setpoint ramping; demand limit control; zero energy band |
| Modes of operations |
occupied, standby, unoccupied, open window, filter, economizer, indoor
air quality, air flow, shutdown, smoke, intermittent fan, outside air lock
out |
| Obligatory inputs |
1 analogue input for room temperature sensor NTC20k or Pt3000;
or apply additional XL10 wall-module with built in sensor on dedicated input terminals |
| Optional inputs |
| • |
XL10 wall module input (T7460, T7560 -series) with
temperature sensor and other functions |
| • |
network input for temperature sensor, setpoint adjustment, bypass
and other functions |
| • |
1 analogue input configurable for discharge, return or outdoor air
temperature sensor NTC20k (or Pt3000) |
| • |
1 digital input for bypass button |
| • |
2 digital inputs configurable for time clock, open window, filter,
economizer, indoor air quality, occupancy, air flow, shutdown, smoke |
| • |
network input for economizer |
|
| Stand-alone operation |
yes |
| Network operation |
yes |
| Bus system |
LonWorks(R) |
| LonMark(R) profile |
8030 |
| Power supply |
24 Vac | 6 VA |
| Additional description |
The 24Vac triac outputs are rated at 500mA. |
|
