Coster DTU 644 User manual

1
We reserve the right to make changes without notice
COSTER
TEMPERATUREAND HUMIDITY CONTROLLER
FOR TWO-BATTERYAIR HANDLING UNIT
DTU 644 Eng. C2
• Temperature and relative humidity control in air handling units
• Communication systems:
– telemanagement C-Bus
• Power supply 24 V~ , DIN rail mounting
1. APPLICATION
DTU 644 is designed for temperature and humidity control in air handling units composed of:
• 2 hot/chilled water or vapor batteries with 3-wire modulating control
or electric batteries with 1-,2-, or 3-stage On-Off control
or direct expansion batteries with 1- or 2-stage On-Off control
• 1 adiabatic humidifying unit with On-off control
or vapor-operated, with 3-wire modulating control, or 1- or 2-stage On-Off co
or vapor-operated, with 0...10 V– control (alternative to air damper control)
• 1 air mixing unit with 0...10 V- air damper actuators
or 1 heat recuperator with 0...10 V- or On-Off control (CSV 304 converter).
The equipment can be included in a Telemanagement system through the C-Bus connection.
2. FEATURESThe main features of DTU 644 are as follows:
• Three 3-wire modulating outputs or 2-stage On-off (two equal loads) or 3-stage (two unequal loads) outputs,
configurable for:
– room temperature control (heating or cooling) with summer external compensation if desired, minimum
and maximum flow limits to prevent cold drafts, hot air stratification and condensing in the air ducts.
– flow temperature control (heating or cooling) with winter and summer compensation if desired
– pre-heating temperature control at variable values according to room temperature and humidity
–roomrelativehumiditycontrol–humidifying(flowlimits,alternativetoenthalpiccomparison,ifdesired)and
dehumidifying
• 1 0...10 V– progressive output, configurable for:
– air mixing control based on temperature or enthalpic comparison, with minimum external air limit
–externalaircontrolforroomdehumidificationwith compensation ofdewtemperatureonglass windows and
with minimum external air limit
– heat recuperator On-Off control according to room-external temperature comparison
– vapor-operated humidifier setting by means of a 0...10 V– control
• Manual or automatic controller function seasonal switching.
• Remote-controlled temperature and humidity setting adjustment
• Alarms for short and open detector circuits and for system and equipment malfunction.
C BUS
3. ACCESSORIES
No. Description Type Application range Sensing Code Data
element t°sheet
1 Duct flow air temperature detector STA 010 0…60 °C NTC 10 kΩB1 –
1 Duct outside air temperature detector STA 001 –30…+40 °C NTC 1 kΩB2 –
or wall outside air temperature detector SAE 001 –30…+40 °C NTC 1 kΩB2 –
1 Duct extract air temperature detector STA 010 0…40 °C NTC 10 kΩB3 –
or or room air temperature detector SAB 010 0…40 °C NTC 10 kΩB3 –
1 Duct pre-heating temperature detector STA 010 0…40 °C NTC 10 kΩB4 –
or duct relative humidity detector STV 010 0…40 °C NTC 10 kΩB4 –
1 Room relative humidity and temperature detector SAU 012 0…40 °C ; 20…80 % NTC 10 kΩB3-B6 –
or duct relative humidity detector SUR 012 20…80 % – B6-B7 –
or duct relative humidity detector (swimming pools) SUR 051 10…90 % – B6-B7 –
1 0...10 V– to 2-stage On-Off Duct converter CSV 304 ––U1–
1 Modulating to 0...10 V– converter CSC 304 ––U2–
1 Temperature set-point adjuster CDB 100 ––Rt°–
1 Relative humidity set-point adjuster CDB 200 ––RH–
1 Outside air minimum distance positioner PCS 04 ––Rs–
E 122
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E 122 - DTU 644 C2 Eng. 05.05.01
We reserve the right to make changes without notice
COSTER
AIR TREATMENT
CONTROLLER
DTU 644
COSTER
OUTPUT Y1
+
–
OUTPUT Ys
ESC
12
OUTPUT Y2
12
OUTPUT Y3
12
ALARM
!
°c
105
115
35
50.5 21
45
4.TECHNICAL DATA (default values in bold print)
• Electrical data
Power supply 24 V ~ ±10%
Frequency 50 … 60 Hz
Consumption 5VA
Protection IP40
Radiodisturbances VDE0875/0871
Vibration test with 2g (DIN 40 046)
Voltage-free output contacts:
maximum switching voltage 250 V ~
maximum switching current 5 (1) A
Construction standards CEI
Data storage period 5 years
Software Class A
• Mechanical data
Case DIN 6E module
Mounting on DIN 35 rail
Materials:
base NYLON
cover ABS
Room temperature:
operation 0 … 45 °C
storage – 25 … + 60 °C
Room Humidity Class F DIN 40040
Dimensions 105 x 115 x 71.5
Weight 0.6 kg
• Adjustment range
Heating (or cooling) temperatures:
desired room temp. (B3 o B1+B3) 0…20 (25)…40 °C
desired flow temp. (B1) 0…20 (25)…60 °C
min. flow limit (B1+B3) 1…18 (8)…60 °C
max. flow limit (B1+B3) 1…50 (25)…60 °C
room heating flow limit (B1+B3) 0…40 °C
room cooling flow limit (B1+B3) 0…40 °C
outside default temp. (B1+B2) –30…–10 (35)…40 °C
flow default temp. (B1+B2) 1…50 (10)…60 °C
summer compensation Te–Ta (B2+B3) 0…6…20 °C
Preheating or dewpoint temperature (B4) :
min. limit 0…10…40 °C
adjustment – 9.5…0…+9.5 °C
Heat pump min. outside temp. –30…0…40°C
Temp. proportional band (base value):
Heating (room) (B3 o B1+B3) ±1…±2…±40 °C
Heating (flow) (B1) ±1…±10…±40 °C
Various temp. proportional band multipliers:
Heating flow (B1+B3) Pb room x 0.5…5…20
Cooling temperatures Pb heat x 0.5…20
Preheating (B4) Pb heat disch x 0.5…1…20
5. OVERALL DIMENSIONS 6. FACIA
1 - Alphanumeric display
2 - + and – operating keys
3 - ←and →operating keys
4 - Y1 output LED
5 - Y2 output LED
1
2
3
3
4
5
1 – Electronic component protection cover
2 – Support base with transformer, relays and terminal boards
3 – Screws for securing cover to base
4 – DIN rail securing elements
5 – DIN rail release lever
Dewpoint (B4) Pb room heat x 0.5…1…20
Air dampers (B2+B3) Pb room heat x 0.5…1…20
Aux. heating (B3) Pb room heat x 0.5…1…20
Aux. heating (B1 or B1+B3) Pb flow disch x 0.5…1…20
Temp. integral time 0…10…255 min.
Room or flow relative humidity (B6) :
humidification 0…50…99 %
dehumidification 0…60…99 %
Humidity proportional band ±0.5…±6…±40 %
Humidity integral time 0…10…255 min.
Flow humidity limits:
min. 1…99 %
max. 1…99 %
influence 1…5…30 %
Y1, Y2, Y3 output control : –modulating
– 2 stages
– 3 stages
Ys output control 0…10V–
Valve stroke time (modulating) 30…120…630 s
Season switching: – manual (display)
– external control
– auto based on outside temp.
– auto based on room temp.
Season switching outside temperatures:
winter 0…20…40 °C
summer 0…25…40 °C
Season switching delay based on outside temp.:
winter 1…24…60 hrs
summer 1…4…60 hrs
• Alarm adjustments
Telemanagement (PC-controlled adjustments)
Alarm call attempts 1…5…255
Alarm call interval 2…10…255 m
Alarms (PC-controlled adjustments) :
Disch.temp. diff. threshold(B1) 1…5…99 °C
Disch.temp. diff. threshold 2…30…255 min.
Room temp. diff. threshold(B3) 0.5…1…30 °C
Room temp. diff. delay 2…30…255 min.
Preheat/dew temp. diff. threshold (B4) 1…5…99 °C
Preheat/dew diff. delay (B4) 2…5…255 min.
Humidity diff. threshold(B6) 0.5…10…90 %
Humidity diff. delay 2…30…255 min.
Warning:
In case of static, the equipment’s output controls may change
settings; original settings will be subsequently restored
automatically.
1 2
4 5 6 37 8 9
6 - Y3 output LED
7 - Ys output LED
8 - Measurement alarm LED
9-MicroprocessormalfunctionLED

3
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COSTER
Always On (as supplied)
Possible Season switching (M2.2) modes:
No ss;Winter;Summer;BasedonOutsideTemp.;
Based on Room Temp.; Based on Seasons
SsWin = On –Winter
SsSum = On –Summer
Season switching (M2.2) must be:
through ss control
7. WIRING DIAGRAMS
B1– Flow air temp. detector
B2– Outside temp. detector
B3 – Room or extract air temp. detector (0...40 °C)
B4– Preheating or dewpoint temp. detector
B6– Room humidity or extract air or flow air detector
B7– Outside humidity (enthalpy) or flow limit Detector
cs – Season switch (eliminate D-E1 link)
Win = winter Sum = summer
Y1-2-3– 3-wire modulating controls
Ys– Air dampers or recuperator or vapor humidifier
0...10V–control
Rt°– Temp. set-point adjuster
RH– Humidity set-point adjuster
Rs– Minimum outside air remote positioner
7.6Use of D-E1-E2 Outputs – Examples
ss– Control through manual or centralized season switch or through
DTU 614-type controller. c1 – on-off contact through timeswitch or through manual control
or through fan relay
D
E1 E2
1234
LY1.e N
1º 2º
LY2.e N
1º 2º
11 12 13 14
1 2 3 4
1º 2º
Y1.c
11 12 13 14
1º 2º
Y2.c
5 6 7
Y3.a
NL
Y.. : MODULATI NG
Run t ime : xxx s
M2.6.8.10
7.13-Wire Modulating Valve Control
5 6 7 8 9 10
1º 2º
N L
Y3.e
7.2Electric Battery or Electric Humidifier Control
Y.. : 2 STAGES
M2.6.8.10
7.4Adiabatic Humidifier Of-Off Control
2 equal loads
Y.. : 3 STAGES
M2.6.8.10
Y..: 2 STAGES
M2.6.8.10
7.3Direct Expansion Battery Control
Y3 : MODULATI NG
Run t ime : xxxs
M2.10
Y3: 2 STAGES
M2.10
2 unequal loads
Y1-2.c– Direct expansion batteries (refrigerators
or heat pumps)
Y1-2.e– Electric batteries
Y3.a– Adiabatic humidifier (pump or electro-
magnetic valve)
Y3.e– Electric battery or electric vapor humidifier
Y3.p - Ys.p– 0…10 V– control vapor humidifier
U2– Modulating signal converter to 0…10 V–
5678910
24 V–
Y3.p
24 V–
024
0
Y
U2
1112 13
024 0Y
Y
7.5Vapor Humidifier Control (0…10 V–)
0
24 V
~
24
24 0 024
Ys
Ys.p
Y0
Ys-Cont rol :
HUMI D I F I CAT I ON
M2.12
Always On (as supplied)
Possible Season switching (M2.2) modes:
No ss;Winter;Summer;BasedonOutsideTemp.;
Based on Room Temp.; Based on Seasons
Ss Win and c1 closed = On - Winter;
Ss Sum and c1 open = On – Summer
Season switching (M2.2) must be:
through ss control
Rs
132
Y1
1
Co 3
Cl
2
Op
B2
B1
0
24 V
~
24
M
B5
B4MB3B2MB1
11 12 13 14
DTU 644
B6
5 6 7 24 0 0 8 9 10
Rt°
B3
Y2
B7 G
RH
24
1234
0
D
E2
C BUS
B8 E1 C
Ys 0C
B6
H
312
1
Co 3
Cl
2
Op
Y3
1
Co 3
Cl
2
Op
Ys
T
T T
24
1Y1
3
0
2
B4
T
B7
H
312
cs
0
Win Sum
D
E1 E2
Ss
Win Sum
Win
D
E1 E2
cs
Sum
c1
c1
D
E1 E2

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We reserve the right to make changes without notice
COSTER
9. WHERE TO PLACE DEVICES
9.1Controller The controller
should be placed in a dry environment, in compliance with acceptable environment conditions as
described under “Technical Data”. If located in environments classified as “hazardous” it should be installed within
switchboards built in accordance with applicable regulations depending on hazard class. The controller may be
installed on the board’s bottom on a DIN rail, or in DIN modular boards
9.2 Flow temperature detector B1
B1 must be installed downstream with respect to the flow fan.
9.3Outside temperature detector B2
STA001 :Itmaybeusedinsystemswithconstantoutsideairinflow.Itmustbeinstalledupstreamwithrespecttothe
outside air dampers near the air intake.
SAE 001 : It should be used in systems where outside air flow is not constant. It must be installed outside the
building, on the north or northwest side, at a height of at least 3 m. above the ground, protected from sunshine and
away from windows, doors, chimneys or other direct thermal interference.
9.4Room temperature or extract air detector B3 or room temperature and humidity detector B3 + B6
SAB 010 or SAU 012 environment : It must be installed in a spot that reflects the average temperature and/or
humidityofasignificantroom(e.g.livingroom)ataheightof1.5...1.6m.abovethefloor,onaninsidewallawayfrom
windows, doors and sources of heat (no alcoves, scaffolds or hangings).
STA 010 extract air: It should be installed upstream with respect to the extract fan.
9.5Duct mounting humidity detector B6
Extract air: It must be installed upstream with respect to the extract fan.
Discharge air: It should be installed downstream with respect to the discharge fan.
9.6Preheating or swimming pool dew point temperature detector B4
Preheating: Itmust be installeddownstreamwithrespectto the humidifyingunit,preferablydownstreamof the drop
separator.
Dew point: It should be installed next to windows facing north.
9.7Outside duct mounting or flow limit humidity detector B7
Outside : It must be installed upstream with respect to outside air dampers, close to the air intake.
Flow limit: It must be installed downstream with respect to the discharge fan.
8. WIRING Proceed as follows:
•Separate the base from the cover
• Install the base onto the DIN rail and check that it is properly anchored by the securing elements (5.4)
• Perform the wiring connections as illustrated in the diagram, in compliance with applicable regulations and using:
– 1.5 sq. mm2cables of supply voltage and relay control outputs
– 1 sq. mm2cables for the detectors and remote control
– 1 sq. mm2 cables for the C-Bus. See sheet T 021 for length limits
• Apply power (24 V~) and make sure voltage properly reaches terminals 24 and 0.
• Remove power, re-install the cover onto the base/terminal board, and fasten it with the 4 screws included in the
package (5.3).
It is recommended not to insert more than two cables in a single controller terminal. Use external terminals if necessary.

5
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COSTER
10.3Telemanagement Address
In telemanagement mode, controllers must have an address sequence number to be identified by
the central computer or by the local PC(s),.
Additionally, controllers can be subdivided into groups.
Note When in non-telemanagement mode, the address should be saved (–).
To cancel values, press + and – keys simultaneously.
10.4Sending Alarms
• Sending alarms : NO= No alarms are sent
YES = Alarms are sent to the central computer and are signaled by
the word “ALARM” appearing on the display
• Teleman Passw: : NO = Password disabled
YES = Password enabled
M2.14
Addr ess : –
Group : –
M2.13
SendingAlarms:NO
PassWTeleman :NO
10. COMMUNICATION
10.1C-Bus Telemanagement Communication (for more detailed information please see Technical Sheet T 021)
Through the C-Bus output, DTU 644 can be managed remotely (two-way data communication) by
means of one or more local PC(s) and/or a remote central computer via telephone network.
From the PC(s) it is possible to view and/or change the following:
– data and value settings on the controller display pages, and configuration data dedicated to
telemanagement only (see “Technical Data”)
– system component’s operating status (pumps, accessory in general)
– acquire system-generated alarms
– view detector readings (temperatures: outside, room, flow, etc.)
10.2C-Bus wiring
C
0C C 0C C 0C
Controller
with Address
No. 1
Controller
with Address
No. 2
Controller
with Address
No. ...
to modem and/or
convertor for
local PC

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We reserve the right to make changes without notice
COSTER
11. TEMPERATURE AND HUMIDITY CONTROL – EXAMPLES
11.1Room temperature and humidity control
B2– Flow temp. detector
B3– Room or extract temp. detector
B6– Room or extract humidity detector
Rt°– Temperature set point adjuster (optional)
RH– Humidity set point adjuster (optional)
B1– Flow temp. detector
B2– Outside temp. detector (for compensation only)
B3– Room or extract temperature detector
B6– Room or extract humidity detector
B7– Flowhumiditydetector(alternativetooutsidehumiditydetector)
Rt°– Temperature set point adjuster (optional)
RH– Humidity set point adjuster (optional)
B1– Flow temp. detector
B2– Outsidetemperaturedetector(forcompensationonly)
B6– Room or extract humidity detector
Rt°– Temperature set point adjuster (optional)
RH– Humidity set point adjuster (optional)
11.2Room temperature and humidity control with flow temperature and humidity limits
11.3Flow temperature and room or flow humidity control
Detector layout
– 2 3– 5 6– 8
M2.1
Detector layout
1 2 3– 5 67 8
M2.1
Detector layout
1 2 –– 5 6– 8
M2.1
B6B3
B2
DTU 644
T
HT
RHRt°
+
+
+
T H
B6B3
B2
M
B5
B4MB3B2MB1
DTU 644
B6
Rt°
B3
B7 G
RH
B8
B6
H
312
T T
B2
DTU 644
T
B1
T H
B6
+
+
+
RHRt°
B6
HT H
B6
B2
B1
M
B5
B4MB3B2MB1
DTU 644
B6
Rt°
B7 G
RH
B8
B6
H
312
T
T
B6B3
B2
DTU 644
T
B1
T
HT
+
+
+
RHRt°
T H
B6B3
T H
B6
B7
H
B2
B1
M
B5
B4MB3B2MB1
DTU 644
B6
Rt°
B3
B7 G
RH
B8
T
T T
B6
H
312
B7
H
312

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We reserve the right to make changes without notice
COSTER
B3
B2
DTU 644
T
T
M
Ys
U1
+
+
+
B2
0
24 V
~
24
M
B5
B4MB3B2MB1
DTU 644
B6
24 0 0
B3
B7 G
24
D
E2B8 E1 C
Ys 0C
U1
T T
24
1Y1
3
0
2
12. USE OF YSOUTPUT– EXAMPLES
12.1Enthalpic comparison air damper optimization
12.2Temperature comparison air damper optimization
12.3Heat recuperator On-Off control
B2– Outside temp. detector
B3– Room or extract temp. detector
B6– Room or extract humidity detector
B7– Outside humidity detector (alternative to flow)
Ys– Progressive air damper control
Rs– Outside air min. distance positioner (optional)
B2– Outside temp. detector
B3– Room or extract temp. detector
Ys– Progressive air damper control
Rs– Outside air min. distance positioner (optional)
B2– Outside temp. detector
B3– Room or extract temp. detector
Ys– Recuperator
U1– 0…10 V– into On-Off signal converter
Detector layout
–23––67–
M2.1
De tec tor l ayout
–23–––––
M2.1
De tec tor l ayout
–23–––––
M2.1
Ys - Con t r o l :
DAMP. TEMPERATURE
M2.12
Ys - Con t r o l :
RECUPERATOR
M2.12
12.4– Outside air control for room dehumidification (swimming pools) with dew point control (optional)
– 1 Heating modulating battery
Detector layout
1–34 5 6– 8
M2.1
Y1 : MODULATI NG
Run t ime : xxx s
M2.6
Y1: HEATING
M2.7
Ys -Con t r ol :
DEHUMIDI F ICAT ION
M2.12
B1– Flow temp. detector
B3– Room or extract temp. detector
B4– Dew point temp. detector (optional)
B6– Room or extract humidity detector
Rt°– Temperature set point adjuster (optional)
RH– Humidity set point adjuster (optional)
Rs– Outside air min. distance positioner (optional)
Y1– Heating modulating control
Ys– Progressiveairdampercontrol(dehumidification)
Use de t ec tor B4
DEW POI NT
M2.4
B3
B2
Ys
DTU 644
T
T
Rs
+
+
+
B7
H
B6
H
Rs
132
B2
0
24 V
~
24
M
B5
B4MB3B2MB1
DTU 644
B6
24 0 0
B3
B7 G
24
D
E2B8 E1 C
Ys 0C
B6
H
312
Ys
T T
24
1Y1
3
0
2
B7
H
312
B3
B2
Ys
DTU 644
T
T
Rs
+
+
+
Rs
132
B2
0
24 V
~
24
M
B5
B4MB3B2MB1
DTU 644
B6
24 0 0
B3
B7 G
24
D
E2B8 E1 C
Ys 0C
Ys
T T
24
1Y1
3
0
2
Ys - Con t r o l :
DAMP. ENTHALPY
M2.12
DTU 644
Ys
+
+
+
B6
H
B7
H
RH
12.5– Vapor humidifying unit control 0…10 V–
0
24 V
~
24
M
B5
B4MB3B2MB1
DTU 644
B6
24 0 0
B7 G
24
D
E2B8 E1 C
Ys 0C
Ys
Y
0
RH
B6
H
312
B7
H
312
B6– Room or extract humidity detector
B7– Flow humidity detector (optional)
RH– Humidity set point adjuster (optional)
Ys– Progressive humidifier control
De tec tor l ayout
–––––6 78
M2.1
Ys-Cont ro l :
HUMI DI F ICAT ION
M2.12
Use de t ec t or B7
FLOW HUM . LIMIT
M2.5
Use de t ec t or B7
OUTSIDE HUMIDITY
M2.5
Y1
Ys RH B4
Rs
Rt°
T
B6B3
DTU 644
B1
T
HT
+
Rs
132
Y1
1
Co 3
Cl
2
Op
B1
0
24 V
~
24
M
B5
B4MB3B2MB1
11 12 13 14
DTU 644
B6
5 6 7 24 0 0 8 9 10
Rt°
B3
B7 G
RH
24
1234
D
E2B8 E1 C
Ys 0C
B6
H
312
Ys
T
T
24
1
Y1
30
2
B4
T

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We reserve the right to make changes without notice
COSTER
13. USE OF Y1, Y2, Y3 OUTPUT– EXAMPLES
13.2– 1 Winter preheating, summer cooling/dehumidifying modulating battery
– 1 Post-heating modulating battery
– 1 Humidifying On-Off unit
B1– Flow temp. detector
B2– Outside temp. detector (for compensation)
B3– Room or extract temp. detector
B4– Preheating temperature detector
B6– Room or extract humidity detector
Rt°– Temperature set point adjuster (optional)
RH– Humidity set point adjuster (optional)
Y1– Preheating modulating control
Y2– Post-heating modulating control
Y3– Humidifier On-Off control
Detectors Layout
1 2 34 5 6– 8
M2.1
Y1 : MODULATING
Run t ime : xxx s
M2.6
Y1 : PREHEAT I NG
M2.7
Y2: MODULATING
Run t ime : xxx s
M2.8
Y2:HEATING
M2.9
Y3: 2 STAGES
M2.10
Y3:HUMIDI F.
M2.11
Detectors Layout
1 2 34 5 6– 8
M2.1
Y1 : MODULATING
Run t ime : xxxs
M2.6
Y1 -Wi n : PREHEAT .
Y1 - Sum: COOL+DHU
M2.7
Y2: MODULATING
Run t ime : xxxs
M2.8
Y2-Win:HEAT ING
Y2-Sum:HEAT ING
M2.9
Y3: 2 STAGES
M2.10
Y3-Win:HUMIDIF.
Y3-Sum:OFF
M2.11
B1– Flow temperature detector
B2– Outside temp. detector (for compensation)
B3– Room or extract temp. detector
B4– Preheating temperature detector
B6– Room or extract humidity detector
Rt°– Temperature set point adjuster (optional)
RH– Humidity set point adjuster (optional)
Y1– Winterpreheatingsummercooling/dehumidifying
modulating control
Y2– Post-heating modulating control
Y3– Humidifier On-Off control
13.1– 1 Preheating modulating battery
– 1 Post-heating modulating battery
– 1 Humidifying On-Off unit
13.3– 1 Heating modulating battery
– 1 Cooling modulating battery
– 1 Humidifying On-Off unit
B1– Flow temp. detector
B2– Outside temp. detector (for compensation)
B3– Room or extract temp. detector
B6– Room or extract humidity detector
Rt°– Temperature set point adjuster (optional)
RH– Humidity set point adjuster (optional)
Y1– Heating modulating control
Y2– Cooling modulating control
Y3– Humidifier modulating control
Detectors Layout
1 2 3– 5 6– 8
M2.1
Y1 : MODULATING
Run t ime : xxxs
M2.6
Y1:HEAT ING
M2.7
Y2: MODULATING
Run t ime : xxxs
M2.8
Y2 : COOL I NG
M2.9
Y3: MODULATING
Run t ime : xxxs
M2.10
Y3:HUMIDI F.
M2.11
Use de t ec t o r B4
PREHEAT I NG
M2.4
Use de t ec t o r B4
PREHEAT I NG
M2.4
Output 8-9-10:
CONTROL
M2.3
Season Swi t ching
NO
M2.2
Season Swi t ching
XXXXXXXXX
M2.2
Season Swi t ching
NO
M2.2
Y3Y1 Y2
+
B4
T
+
B6B3
B2
DTU 644
T
B1
T
HT
RHRt°
Y3Y1 Y2
+
B4
T
+
–
B6B3
B2
DTU 644
T
B1
T
HT
RHRt°
Y3Y2Y1
–+
B6B3
B2
DTU 644
T
B1
T
HT
RHRt°
Y1
1
Co 3
Cl
2
Op
B2
B1
0
24 V
~
24
M
B5
B4MB3B2MB1
11 12 13 14
DTU 644
B6
5 6 7 24 0 0 8 9 10
Rt°
B3
Y2
B7 G
RH
24
1234
D
E2B8 E1 C
Ys 0C
B6
H
312
1
Co 3
Cl
2
Op
T
T T
B4
T
Y3
NL
Y1
1
Co 3
Cl
2
Op
B2
B1
0
24 V
~
24
M
B5
B4MB3B2MB1
11 12 13 14
DTU 644
B6
5 6 7 24 0 0 8 9 10
Rt°
B3
Y2
B7 G
RH
24
1234
D
E2B8 E1 C
Ys 0C
B6
H
312
1
Co 3
Cl
2
Op
T
T T
B4
T
Y3
NL
Y1
1
Co 3
Cl
2
Op
B2
B1
0
24 V
~
24
M
B5
B4MB3B2MB1
11 12 13 14
DTU 644
B6
5 6 7 24 0 0 8 9 10
Rt°
B3
Y2
B7 G
RH
24
1234
D
E2B8 E1 C
Ys 0C
B6
H
312
1
Co 3
Cl
2
Op
Y3
1
Co 3
Cl
2
Op
T
T T

9
We reserve the right to make changes without notice
COSTER
13.4– 1 Heating modulating battery
– 1 Cooling direct expansion On-Off battery
– 1 Humidifying On-Off unit
B1– Flow temp. detector
B2– Outside temp. detector (for compensation)
B3– Room or extract temp. detector
B6– Room or extract humidity detector
Rt°– Temperature set point adjuster (optional)
RH– Humidity set point adjuster (optional)
Y1– Heating modulating control
Y2– Cooling On-Off control
Y3– Humidifier On-Off control
Detector Layout
1 2 3– 5 6– 8
M2.1
Y1 : MODULATING
Run t ime :xxxs
M2.6
Y1:HEATING
M2.7
Y2: 2 STAGES
M2.8
Y2 : COOL I NG
M2.9
Y3 : 2 STAGES
M2.10
Y3:HUMIDI F.
M2.11
Season Swi tching
NO
M2.2
13.5– 1 Summer cooling/dehumidifying direct expansion On-Off battery
– 1 Heating On-Off battery
– 1 Humidifying On-Off unit
B1– Flow temp. detector
B2– Outside temp. detector (for compensation)
B3– Room or extract temp. detector
B6– Room or extract humidity detector
Rt°– Temperature set point adjuster (optional)
RH– Humidity set point adjuster (optional)
Y1– Summer cooling/dehumidifying On/Off control
Y2– Heating On-Off control
Y3– Humidifier On-Off control
Detector Layout
1 2 3– 5 6– 8
M2.1
Y1: 2 STAGES
M2.6
Y1-Win:OFF
Y1 - Sum: COOL+DHU
M2.7
Y2: 2 STAGES
M2.8
Y2-Win:HEATING
Y2-Sum:HEATING
M2.9
Y3 : 2 STAGES
M2.10
Y3-Win:HUMIDI F.
Y3-Sum:OFF
M2.11
Season Swi tching
XXXXXXXXX
M2.2
13.6– 1 Winter heating, summer cooling/dehumidifying modulating battery
– 1 Summer post-heating On-Off battery
– 1 Humidifying On-Off unit
B1– Flow temp. detector
B2– Outside temp. detector (for compensation)
B3– Room or extract temp. detector
B6– Room or extract humidity detector
Rt°– Temperature set point adjuster (optional)
RH– Humidity set point adjuster (optional)
Y1– Winter heating, summer cooling/dehumidifying
modulating control
Y2– Summer post-heating On-Off control
Y3– Humidifier On-Off control
Detector Layout
1 2 3– 5 6– 8
M2.1
Y1 : MODULATING
Run t ime :xxxs
M2.6
Y1-Win:HEAT ING
Y1 - Sum: COOL+DHU
M2.7
Y2: 2 STAGES
M2.8
Y2-Win:OFF
Y2-Sum:HEATING
M2.9
Y3 : 2 STAGES
M2.10
Y3-Win:HUMIDI F.
Y3-Sum:OFF
M2.11
Season Swi tching
XXXXXXXXX
M2.2
Y3
Y2
–
Y1
+
B6B3
B2
DTU 644
T
B1
T
HT
RHRt°
Y3
Y1
–
Y2
B6B3
B2
DTU 644
T
B1
T
HT
RHRt°
1º 2º
Y2
B2
B1
0
24 V
~
24
M
B5
B4MB3B2MB1
11 12 13 14
DTU 644
B6
5 6 7 24 0 0 8 9 10
Rt°
B3
B7 G
RH
24
1234
D
E2B8 E1 C
Ys 0C
B6
H
312
T
T T
Y3
NL
Y1
1º 2º
Y1 Y3 Y2
+
–
B6B3
B2
DTU 644
T
B1
T
HT
RHRt°
1º 2º
Y1
1
Co 3
Cl
2
Op
B2
B1
0
24 V
~
24
M
B5
B4MB3B2MB1
11 12 13 14
DTU 644
B6
5 6 7 24 0 0 8 9 10
Rt°
B3
Y2
B7 G
RH
24
1234
D
E2B8 E1 C
Ys 0C
B6
H
312
T
T T
Y3
NL
Y1
1
Co 3
Cl
2
Op
B2
B1
0
24 V
~
24
M
B5
B4MB3B2MB1
11 12 13 14
DTU 644
B6
5 6 7 24 0 0 8 9 10
Rt°
B3
Y2
B7 G
RH
24
1234
D
E2B8 E1 C
Ys 0C
B6
H
312
T
T T
1º 2º
Y3
NL

10
E 122 - DTU 644 C2 Eng. 05.05.01
We reserve the right to make changes without notice
COSTER
13.7– 1 Winter heating, summer cooling/dehumidifying modulating battery with heat pump season switching
– 1 Summer post-heating On-Off battery
– 1 Humidifying On-Off unit
B1– Flow temp. detector
B2– Outside temp. detector (for compensation)
B3– Room or extract temp. detector
B6– Room or extract humidity detector
Rt°– Temperature set point adjuster (optional)
RH– Humidity set point adjuster (optional)
Y1– Winter heating, summer cooling/dehumidifying
modulating control
Y2– Summer post-heating On-Off control
Y3– Humidifier On-Off control
Ycs– Heat pump season control
Detectors Layout
1 2 3– 5 6– 8
M2.1
Y1 : MODULATING
Run t ime : xxxs
M2.6
Y1-Win:HEATING
Y1 - Sum: COOL+DHU
M2.7
Y2: 2 STAGES
M2.8
Y2-Win:OFF
Y2-Sum:HEAT ING
M2.9
Y3-Win:HUMIDIF.
Y3-Sum:OFF
M2.11
Season Swi t ching
XXXXXXXXX
M2.2
Output 8-9-10:
CONTROL SEASON
M2.3
13.8– 1 Winter heating, summer cooling/dehumidifying direct expansion On/Off battery with heat pump season switching
– 1 Summer post-heating On-Off battery
– 1 Humidifying On-Off unit
B1– Flow temp. detector
B2– Outside temp. detector (for compensation)
B3– Room or extract temp. detector
B6– Room or extract humidity detector
Rt°– Temperature set point adjuster (optional)
RH– Humidity set point adjuster (optional)
Y1– Winter heating,summercooling/dehumidifying
On/Off control
Y2– Summer post-heating On-Off control
Y3– Humidifier On-Off control
Ycs– Heat pump season control
Detectors Layout
1 2 3– 5 6– 8
M2.1
Y1: 2 STAGES
M2.6
Y1-Win:HEATING
Y1 - Sum: COOL+DHU
M2.7
Y2: 2 STAGES
M2.8
Y2-Win:OFF
Y2-Sum:HEAT ING
M2.9
Y3-Win:HUMIDIF.
Y3-Sum:OFF
M2.11
Season Swi t ching
XXXXXXXXX
M2.2
Output 8-9-10:
CONTROL SEASON
M2.3
13.9– 1 Winter preheating, summer cooling/dehumidifying modulating battery
– 1
Winter post-heating On-Off battery
– 1 Summer post-heating On-Off battery
– 1 Humidifying On-Off unit
B1– Flow temp. detector
B2– Outside temp. detector (for compensation)
B3– Room or extract temp. detector
B4– Preheating temperature detector
Rt°– Temperature set point adjuster (optional)
Y1– Winter preheating,summercooling/dehumidifying
modulating control
Y2– Winter post-heating modulating control
Y3– Summer post-heating On/Off control
Detectors Layout
1 2 3– 5 6– 8
M2.1
Y1 : MODULATING
Run t ime : xxxs
M2.6
Y1 -Wi n : PREHEAT .
Y1 - Sum: COOL+DHU
M2.7
Y2: MODULATING
Run t ime : xxxs
M2.8
Y2-Win:HEATING
Y2-Sum:OFF
M2.9
Y3-Win:OFF
Y3-Sum:HEATING
M2.11
Season Swi t ching
XXXXXXXXX
M2.2
Output 8-9-10:
CONTROL
M2.3
Y3: 2 STAGES
M2.10
Use de t ec t o r B4
PREHEAT I NG
M2.4
Y1
Y3 Y2
Ycs
+
–
B6B3
B2
DTU 644
T
B1
T
HT
RHRt°
Y1
+
–
Y3 Y2
Ycs
B6B3
B2
DTU 644
T
B1
T
HT
RHRt°
Y1 Y2
+
B4
+
–
Y3
H
T
B3
B2
DTU 644
T
B1
T
T
Rt°
1º 2º
Y1
1
Co 3
Cl
2
Op
B2
B1
0
24 V
~
24
M
B5
B4MB3B2MB1
11 12 13 14
DTU 644
B6
5 6 7 24 0 0 8 9 10
Rt°
B3
Y2
B7 G
RH
24
1234
D
E2B8 E1 C
Ys 0C
B6
H
312
T
T T
Y3
NL
Ycs
CoWinSum
Ycs
Y1
2ºSt
1º 2º
B2
B1
0
24 V
~
24
M
B5
B4MB3B2MB1
11 12 13 14
DTU 644
B6
5 6 7 24 0 0 8 9 10
Rt°
B3
Y2
B7 G
RH
24
1234
D
E2B8 E1 C
Ys 0C
B6
H
312
T
T T
Y3
NL
Co
Win
Sum
1ºSt
Y1
1
Co 3
Cl
2
Op
B2
B1
0
24 V
~
24
M
B5
B4MB3B2MB1
11 12 13 14
DTU 644
B6
5 6 7 24 0 0 8 9 10
Rt°
B3
Y2
B7 G
24
1234
D
E2B8 E1 C
Ys 0C
1
Co 3
Cl
2
Op
Y3
T
T T
B4
T
1º 2º