LCD Electronic Thermostat CFU-D series

LCD Electronic Thermostat CFU-D series
Overview of product
New generation CFU-D series designed for commercial and residential fan coil applications for
2- and 4-pipe system. Modern design suits for all decor and wall box.
Features
Large LCD with orange backlight
Energy saving with economy mode
Universal voltage input
Input for external sensor and key card switch
Last status memory function
Suits both US and BS junction box
Temperature display offset
Auto or manual 3 fan speed
Setpoint limit adjustable
Open-close control by 2-wire or 3-wire actuator
Low temperature protection
Drive valve to close when switch off
Model selection
e.g.
Fan coil thermostat series
CFU - D
2
2
2
D2 series
CFU
LCD type with push buttons
D
2-pipe system
4-pipe system
2
4
External sensor and occupancy
2
Cooling only
Cooling and/or heating
1
2
Cooling
only
Cooling or
heating
3 Fan
speed
1 Fan
speed
External
sensor
Occupancy
contact
CFU-D221
CFU-D222
CFU-D221-SS*
*-SS: Single fan speed available on request
D4 series
Cooling
only
Cooling and
heating
3 Fan
speed
1 Fan
speed
External
sensor
Occupancy
contact
CFU-D422
V1.3 09.2011 · Subject to modification
Technical data
Model
CFU-D221-SS
CFU-D221
CFU-D222
CFU-D422
Cooling only, 1 fan speed, external sensor and occupancy contact
Cooling only, 3 fan speed, external sensor and occupancy contact
Cooling or heating, 3 fan speed, external sensor and occupancy contact
Cooling and heating auto changeover, 3 fan speed, external sensor and
occupancy contact
Nominal voltage
AC 100...240V, 50/60Hz
Nominal voltage range
AC 85...264V
Temperature display range
0...40°C, 0.5K per step (< 0°C : LO, > 40°C : HI)
Sensing element
Built-in : NTC thermistor, 100kΩ@25°C
External : NTC10kΩ@25°C, maximum cable length 10m
(Probe type sensor, EXT-TN-1072532, cable length 2m, optional)
Fan speed control
Low ( I ), Middle ( II ), High ( III ) and Auto speed
Setpoint range
5...35°C (factory default, 22°C)
Setpoint limit
Adjustable from 5...35°C (factory default, lower setpoint : 5°C, upper setpoint : 35°C)
Interlock between lower and upper setpoint limit, LSP < USP by 1K
Economy setpoint
Cooling range : 25...30°C (factory default : 28°C)
Heating range : 15...20°C (factory default : 15°C)
Switching differential
1K (cooling and heating)
Deadband
2K (D4 series only)
Display temperature offset
±3K (-3, -2, -1, 0, +1, +2, +3)
Load rating
Fan speed output
Relay output
Control signal
Open-close control by 3-wire or spring return by 2-wire
Occupancy contact
Voltage free contact input
Ambient temperature
Operating : 0...40°C
Storage
: 0...45°C
: 3A resistive, 1A inductive, AC 250V, 50/60Hz
: 3A resistive, 1A inductive, AC 250V, 50/60Hz (D4 series 1A)
1
LCD Electronic Thermostat CFU-D series
Technical data (con’t)
Ambient humidity
Max. 90% RH, non-condensing
Wiring connection
Terminal wiring 0.5...1.0 mm²
Agency approval
LVD - CE according to 2006/95/EC
EMC - CE according to 2004/108/EEC
Material
Fire-retardant PC, self-extinguishing: UL 94-V0
Degree of protection
IP30
Weight
0.16 kg
Dimensions (LxWxH)
110 x 84 x 28mm
Operation
Mode
Fan speed
On / off, cooling
/ heating
Press
button once to switch on; press and hold for 2 seconds to switch off.
Press M button to switch between cooling or heating mode.
*For CFU-D422, auto changeover between cooling and heating according setpoint.
3 fan speed ( Low
, Middle , High
) and Auto
(
)
Auto fan speed is determined by temperature between setpoint and ambient temperature;
i.e. 1K - Low
Backlight
Valve output
Memory
Occupancy contact
Display selection
Temperature offset
Low temperature protection
(Defrost)
Sensor select
Key lock
Error code
; 2K - Middle
; 3K - High
.
Backlight lights for 120 seconds when pressing any button.
icon appears when valve open.
Last status (e.g. mode, setpoint, fan speed) will be resumed after power failure or switch off.
Contact OPEN, thermostat runs in normal mode.
Contact CLOSE, thermostat runs in economy mode.
Setpoint or ambient temperature, adjustable in p-setting mode.
Ambient temperature display can offset, from -3K to +3K, in p-setting mode.
When thermostat is switched OFF and ambient temperature < 5°C, thermostat automatically starts in
heating mode until ambient temperature rise to 7°C.
Built-in or external sensor, adjustable in p-setting mode.
Press and hold
and
for 5 seconds, all buttons are locked when
appears.
When key lock is active, no function will perform when any button is pressed.
Press and hold
and
for 5 seconds to unlock.
E1 : Built-in sensor short circuit.
E3 : External sensor short circuit.
E2 : Built-in sensor open circuit.
E4 : External sensor open circuit.
Parameter setting mode
Entering p-setting mode
Operate in p-setting mode
V1.3 09.2011 · Subject to modification
Quit p-setting mode
dISP
OSEt
dEfr
USP
LSP
SEn
COOL*
HEAt**
When thermostat is switched OFF, press and hold
is in p-setting mode.
for 5 seconds,
appears indicating thermostat
Press
to change setting parameters, press and to change setting;
dISP > OSet > dEFr > USP > Lsp > Sen > COOL* > HeaT*
When no button is pressed over 10 seconds, setting will be saved and quit p-setting mode.
Display selection : ambient temperature “rt” / setpoint “SP”
( factory default rt )
Temperature offset : -3, -2, -1, 0, 1, 2, 3
( factory default 0 )
Defrost - low temperature protection : On / OFF
( factory default OFF )
Upper setpoint limit : 10...35°C
( factory default 35°C )
Lower setpoint limit : 5...30°C
( factory default 5°C )
Sensor selection : external “Et” / built-in “Int”
( factory default Int )
Cooling setpoint in economy mode : 25...30°C
( factory default 28°C )
Heating setpoint in economy mode : 15...20°C
( factory default 15°C )
*Available on corresponding models
2
LCD Electronic Thermostat CFU-D series
Wiring diagram
CFU-D221-SS
CFU-D221 / D222
CFU-D422
L
L
6A fuse
L
External
sensor
L
Occupancy
contact
6A fuse
S1 S2 S3
External
sensor
L
Occupancy
contact
6A fuse
L
S1 S2 S3
Lo Mid Hi
N
I
2
FAN
N
VO VC
I
II
3
III
FAN
N
VO VC
S1 S2 S3
I
III
CO CC
2
3
1
HO HC
2
3
1
FAN
Actuator for
cooling
Actuator
N
II
3
1
Actuator
N
Occupancy
contact
Lo Mid Hi
2
1
External
sensor
Actuator for
heating
N
2-wire actuator connection
3-wire actuator connection
Terminals
D2 series
Voltage input - Neutral N
VO Output for actuator open - VO
Voltage input - Live
VC Output for actuator close - VC
L
External sensor S1
Common for sensor and occupancy S2
I
Output for fan - Low speed
II
Output for fan - Middle speed
III Output for fan - High speed
Occupancy contact S3
D4 series
Voltage input - Neutral N
Voltage input - Live
III Output for fan - High speed
L
Output for cooling actuator close - CC CC
Output for fan - Middle speed
I
Output for fan - Low speed
External sensor S1
CO Output for cooling actuator open - CO
Common for sensor and occupancy S2
HO Output for heating actuator open - HO
Occupancy contact S3
HC Output for heating actuator close - HC
Terminals
Function
V1.3 09.2011 · Subject to modification
II
S1 and S2
External sensor
S2 and S3
Occupancy contact
3
LCD Electronic Thermostat CFU-D series
Auto changeover for D4 series
Normal mode
Heating
On
Economy mode
Cooling
On
Off
Cooling
15°C
28°C
1K
1K
Off
Temp.
setpoint
1K
Heating
Temp.
1K
0.5K 0.5K
2K
Auto changeover is determined by setpoint and ambient temperature. When thermostat is in normal mode, auto changeover mechanism is
as follows:
Cooling actuator turns on when ambient temperature above 1.5K of setpoint. When ambient temperature reaches 0.5K above setpoint,
cooling actuator turns off.
Heating actuator turns on when ambient temperature below 1.5K of setpoint. When ambient temperature reaches 0.5K below setpoint,
heating actuator turns off.
The deadband is 2K in normal mode.
When thermosat is in economy mode, cooling setpoint set to 28°C (factory default, adjustable from 25...30°C), heating setpoint set to 15°C
(factory default, adjustable from 15...20°C).
*Auto changeover feature is available in D4 series only
LCD display and buttons
Error
P-setting mode
CFU-D221-SS
CFU-D222
CFU-D221/CFU-D422
Key lock
Setpoint
Ambient
temperature
Up
Down
Valve output
Economy
Heating
Cooling
Defrost
Low
Middle
M
Auto speed
High
On / Off
Mode Fan speed
Dimensions (mm)
28
60
83.5
110
V1.3 09.2011 · Subject to modification
84
M
4