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FEATURES
• Easy to install and commission
• Three wire connection to actuators
• Optional auto changeover
• Minimal commissioning time
• Mount directly on standard DIN
rail or on the terminal unit casing
CZU
Fan Coil Unit Controller
The CZU is an Electronic Modulating Controller for the control of terminal units or fan
coils in air conditioning systems serving small zones of buildings such as individual
offices and hotel bedrooms.
INSTALLATION DETAILS
Power supply:
24Vac (±10%) 50/60Hz
Protection class:
IP 20
Override Inputs:
Pipe surface thermostat
Adjustments
Set Value: 10 to 40°C
Dead Zone: 0 to 6°K, Actuator Stroke Setting: 12.5 to 75mm
Outputs:
1 or 2 stage pulsed (modulated) switched outputs. Up to 7 AVU / AVUX
actuators per stage
ACTUATORS
Power Supply
Control Action
Thrust Data Sheet
AVU 2201
24Vac
Reversing-modulating 105N 2.201
AVUX 5202
24Vac
Reversing-modulating 220N 3.005
SensorS
Current Sensor
Type
Replaces
STR600
Space
DRT 3453
STR612
Space
DRT 3451
STD660
Duct
DDT 0001
STD670
Duct
DDU 0001 / 1803
Control
Range
Output
CZU 4201
2-stage heating and cooling
with dead zone
10 to 40°C
24V actuator
control
Data Sheet 2.201
Stand-alone
Controllers
Fan coil Controller
Satchwell Product Catalogue – Stand-alone Controllers – Fan coil Controller
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