W7750B2011/U

Honeywell 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
The 24Vac triac outputs are rated at 500mA.
Power supply: 24Vac


Model: expanded version
Triac outputs 24Vac: 8
Current outputs 4..20mA: no