Coster DTU 614 C2 Eng. User manual

1
E 121 - DTU 614 C2 Eng. 04.07.01
We reserve the right to make changes without notice
COSTER
TEMPERATUREAND HUMIDITY CONTROLLER
FOR ONE-BATTERYAIR HANDLING UNIT
DTU 614 C2 Eng.
• Temperature and relative humidity control in air handling units
• 24-hour, 7-day, and yearly period programming
• Communication systems:
– telemanagement C-Bus
• 24 V power supply; DIN rail mounting
1. APPLICATION
DTU 614 is designed for temperature and humidity control in air handling units composed of:
• 1 hot/chilled water or vapor battery 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 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 614 are as follows:
• One 3-wire modulating output, 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
– battery antifreeze temperature control
– One On-off output for winter adiabatic humidifying unit control
• One 0...10 V– progressive output, configurable for:
– air mixing control based on temperature comparison, with minimum external air limit
–externalaircontrolforroomdehumidificationwithcompensationofdewtemperatureonglasswindowsand
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
• One 3-wire On-Off output for manual or automatic seasonal switching.
• Two On-Off outputs for fan and pump control according to time setting in use
• Winter battery frostprotection temperature control
• Time setting including 25 24-hour programs, 5 7-day programs, and 25 yearly period programs
• Alarms for detector short and open circuits and for system and equipment malfunction.
C BUS
3. ACCESSORIES
No. Description Type Application Range Sensing element t°Code Datasheet
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 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 dew point temperature 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 –
or duct relative humidity detector (swimming pools) SUR 051 10…90 % – B6 –
1 Battery frostprotection temperature detector – flush SAF 010 0…40 °C NTC 10 kΩB7 –
or immersed SIH 010 0…40 °C NTC 10 kΩB7 –
1 0…10 V – to 2-stage On-Off Duct converter CSV 304 ––U1–
1 Temperature set-point adjuster CDB 100 ±5 °C–Rt°–
1 Relative humidity set-point adjuster CDB 200 ±5 %H – RH –
1 Outside air minimum distance positioner PCS 04 ––Rs–
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We reserve the right to make changes without notice
COSTER
5. OVERALL DIMENSIONS 6. FRONT PANEL
1
2
3
3
4
5
4. TECHNICAL DATA (default values in bold print)
• Electrical data
Power supply 24 V ~ ±10%
Frequency 50 … 60 Hz
Consumption 5 VA
Protection IP40
Radio interference 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 Italian Elechtrotech Comm. (CEI)
Data storage period 5 years
Software Class A
• Mechanical data
Case Modulo DIN 6E
Mounting on DIN 35 rail
Materials:
base NYLON
cover ABS
Room temperature:
operating 0 … 45°C
storage – 25 … + 60°C
Room humidity Class F DIN 40040
Dimensions 105 x 115 x 71.5
Weight 0.6 kg
• Programs and yearly periods
24-hour programs 1…25
24-hour schedules 2…6
7-day programs 1…5
Yearly periods 0…25
• Setting 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
1 - Alphanumeric display 6 - Fan warning
2 - + and – operating keys 7 - Humidifier warning
3-←and →operating keys 8 - Frostprotection warning
4 - Valve warnings 9 - Air damper warning
5 - Pump warning 10 - Readings alarm warning
11 - Malfunction warning
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
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 amb x 0.5…5…20
Cooling temperatures Pb heat x 0.5…20
preheating (B4) Pb heat disch x 0.5…1…20
dew point (B4) Pb room heat x 0.5…1…20
air dampers (B2+B3) Pb room heat x 0.5…1…20
frostprotection battery (B7) Pb flow heat 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.
Y output control: – modulating
– 2 stage
– 3 stage
Ys output control 0…10 V–
Valve stroke time (modulating) 30…120…630 sec.
Season switching: – manual (display)
– external control
– auto based on outside temp.
– auto based on room temp.
– auto based on dates
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 ore
summer 1…4…60 ore
• Alarm setting
Telemanagement (PC-controlled calibrations)
Alarm call attempts 1…5…255
Alarm call interval 2…10…255 m
Alarms (PC-controlled calibrations)
Flow temp. diff. threshold (B1) 0…5…99 °C
Flow temp. diff. delay 2…30…255 min.
Room temp. diff. threshold (B3) 0…1…99 °C
Room temp. diff. delay 2…30…255 min.
Frostprotection temperature trip delay (B4) 2…5…255
min.
Humidity diff. threshold (B6) 0…10…100 %
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.
105
115
35
50.5 21
45
AIR TREATMENT
CONTROLLER
DTU 614
COSTER
VALVE HUMIDIFICATOR
+
–
▼
▼
12
°c
!
ALARMSPUMP FAN
ESC
FROSTPROT.
❄
DAMPER
1 2
4 5 6 7 8 9 11 310

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COSTER
7. WIRING DIAGRAM
B1 – Flow air temp. detector 0…60 °C
B2 – Outside temp. detector –30…+40 °C
B3 – Room or extract air temp. detector 0…40 °C
B4 – Preheating or dewpoint temp. detector 0…40 °C
B6 – Room humidity or extract air or flow air detector
B7 – Frostprotection detector
Y – 3-wire modulating control or 2- or 3-stage On-Off control
Ys – Air dampers or recuperator or vapor humidifier
0...10V– control
Ycs – Season switch
Mv – Fan control
Mp – Pump control
Mu – Adiabatic humidifier control
Rt°– Temp. calibration adjuster
RH – Humidity calibration adjuster
Rs – Outside air min. distance positioner
cs – Season switch : 1 = Winter, 2 = Summer.
Y : MODULATING
Run t ime : xx x s
M3.5
7.13-Wire Modulating Valve Control
7.2Electric Battery Control 7.3Direct Expansion Battery Control
Y:2STAGES
M3.5
2 equal loads
Y:3STAGES
M3.5
Y:2STAGES
M3.5
2 unequal loads
On-Off according to program in use (M0.2or M0.4)
Possible Season Switching (M3.2) modes: No ss; Winter; Summer; Based on Outside Temp. Based on Seasons
c1 open : On-Off according to Program setting (M0.2or M0.4)
c1 closed : Always On (for non-programmed operation)
To use c1 as only On-Off control, set OFF in the Program setting (M0.2and M0.4).
Possible Season Switching (M3.2) modes: No ss; Winter; Summer; Based on Outside Temp.; Based on Seasons
Ss Win: On-Off – according to Winter Program setting (M0.2)
Ss Sum: On-Off – according to Summer Program setting (M0.4)
Season switching (M3.2) must be: through ss control
Ss Win and c1 open : On-Off -according to Winter Program setting (M0.2)
Ss Win and c1 closed: On-Off -Always On, Winter;
Ss Sum and c1 open: On-Off -according to Summer Program setting (M0.4)
Ss Sum and c1 closed: On-Off -Always On, Summer;
To use c1 as only On-Off control, set OFF in the Program setting (M0.2and M0.4).
Season Switching (M3.2) mode must be : through ss + c1 control
7.5Use of D-E1-E2 Outputs – Examples
D
E1 E2
c1
D
E1 E2
ss – Control through manual or centralized season switch or through DTU 614-type controller with season switch.
c1 – on-off contact through manual control or through fan relay
0
24 V
~
24
24 0 024
Ys
Ys
Y0
7.4Vapor Humidifier Control (0…10 V–)
Ys-Cont ro l :
HUMI D I F .
M3.5
Y
1
Co 3
Cl
2
Op
B4
MB1
11 12 13 14
DTU 614
56 7 24 0 08 9 10
Ycs
1
Co 3
Win
2
Sum
24
1 2 3 4
0
D
E2
C BUS
E1 C
0C
T
Mv
NL
Mp
NL
B7
T
MB3 B4B2 MB5 B6 B7
B2B1 Rt°B3 RH B6
H
312
T
TT
G B8
Mu
NL
cs
0
Win Sum
Ys
Rs
132
Ys
24
1Y1
3
0
2
0
24 V
~
24
1234
LY.e N
1st 2nd
1 2 3 4
1st 2nd
Y.c
1 2 3 4
D
E1 E2
cs
Win Sum
Win
D
E1 E2
cs
Sum
c1

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COSTER
9. WHERE TO PLACE DEVICES
9.1Controller The controller should be placed in a dry environment, in compliance with acceptable environment conditions as
describedunder“TechnicalData”.Iflocatedinenvironmentsclassifiedas“hazardous”itshouldbeinstalledwithin
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
9.2Flow temperature detector B1
B1 must be installed downstream with respect to the flow fan.
9.3Outside temperature detector B2
STA 001 : It may be used in systems with constant outside air inflow. It must be installed upstream with respect to
the 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 northor northwest side,at a heightof at least3 m. abovethe ground, protectedfrom 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 temperature detector B4
Itmustbe installed downstream withrespecttothehumidifying unit, preferablydownstreamofthedrop separator.
9.7Swimming pool window dew point temperature detector B4
It should be installed in contact with windows facing north.
9.8Frost protection temperature detector B7
Itshould beinstalled downstreamof thepreheating battery, in contact with thebattery (flushdetector SAF010) or
immersed on the battery outflow piping.
8. WIRING
Procede as follow :
• 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)
•Performthewiringconnectionsasillustratedinthediagram,incompliancewithapplicableregulationsandusing:
– 1.5 mm2cables for supply voltage and relay control outputs
– 1 mm2cables for the detectors and remote control
– 1 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.

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COSTER
10.3Telemanagement Address
In telemanagement mode, controllers must have an address sequence number in order 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
M3.8
Addr ess : –
Group : –
M3.7
SendingAl arms: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 614 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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COSTER
B2 – Outside temp. detector (for compensation only)
B3 – Room or extract temp. detector
B6 – Room or extract humidity detector
Rt°– Temperature set point adjuster (optional)
RH – Humidity set point adjuster (optional)
11.1– Room temperature and humidity control
Detectors Layout
–23–56–8
M3.1
B1 – Flow temp. detector
B2 – Outside temp. detector (for compensation only)
B3 – Room or extract temp. detector
B6 – Room or extract humidity detector
Rt°– Temperature set point adjuster (optional)
RH – Humidity set point adjuster (optional)
11.2– Room temperature and humidity control with flow temperature limits
Detectors Layout
123–56–8
M3.1
B1 – Flow temp. detector
B2 – Outside temp. detector (for compensation only)
B6 – Room or extract humidity detector
Rt°– Temperature set point adjuster (optional)
RH – Humidity set point adjuster (optional)
11.3– Flow temperature and room or flow humidity control
Detectors Layout
12––56–8
M3.1
11. TEMPERATURE AND HUMIDITY CONTROL – EXAMPLES
B6B3
B2
DTU 614
T
HT
RHRt°
+
+
+
T H
B6B3
B2
M
B5
B4MB3B2MB1
DTU 614
B6
Rt°
B3
B7 G
RH
B8
B6
H
312
T T
B2
B1
M
B5
B4MB3B2MB1
DTU 614
B6
Rt°
B3
B7 G
RH
B8
B6
H
312
T
T T
B2
DTU 614
T
B1
T H
B6
+
+
+
RHRt°
B6
HT H
B6
B2
B1
M
B5
B4MB3B2MB1
DTU 614
B6
Rt°
B7 G
RH
B8
B6
H
312
T
T
B6B3
B2
DTU 614
T
B1
T
HT
+
+
+
RHRt°
T H
B6B3
T H
B6

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COSTER
12. USE OF YS OUTPUT– EXAMPLES
B2 – Outside temp. detector
B3 – Room or extract temp. detector
Ys – Progressive air damper control
Rs – Outside air min. distance positioner (optional)
12.1– Temperature comparison air damper optimization
B2 – Outside temp. detector (for compensation only)
B3 – Room or extract temp. detector
Ys – Recuperator
Rt°– Temperature set point adjuster (optional)
U1 – 0...10 V- into On-Off signal converter
12.4– Vapor humidifying unit control (0...10 V–)
Ys-Cont rol :
DEHUMIDI F I CAT ION
M3.6
12.3– Outside air control for room dehumidification (swimming pools) with dew point control (optional)
– 1 Heating modulating battery
B1 – Flow temp. detector
B3 – Room or extract temp. detector
B4 – Dew point temp. detector (optional)
B6 – Room or extract humidity detector
B7 – Battery antifreeze detector
Mp – Pump On-Off control
Mv – Fan On-Off control
Rt°– Temperature set point adjuster (optional)
RH – Humidity set point adjuster (optional)
Rs – Outside air min. distance positioner (optional)
Y – Heating modulating control
Ys – Progressive air damper control
(dehumidification)
Use De t ec t or B4
DEWPOINT
M3.3
Detectors Layout
–23–––––
M3.1
Ys - Con t ro l :
DAMP. TEM
M3.6
B3
B2
Ys
DTU 614
T
T
Rs
+
+
+
Rs
132
B2
0
24 V
~
24
M
B5
B4MB3B2MB1
DTU 614
B6
24 0 0
B3
B7 G
24
D
E2B8 E1 C
Ys 0C
Ys
T T 24
1Y1
3
0
2
B3
B2
DTU 614
T
T
M
Ys
U1
+
+
+
B2
0
24 V
~
24
M
B5
B4MB3B2MB1
DTU 614
B6
24 0 0
B3
B7 G
24
D
E2B8 E1 C
Ys 0C
U1
T T
24
1Y1
3
0
2
Detectors Layout
–23–––––
M3.1
Detectors Layout
1–34 5 6– 8
M3.1
Ys - Con t ro l :
RECUPERATOR
M3.6
Y : MODULATING
Run Time : xxxs
M3.4
Y:HEATING
M3.5
Y
Ys RH B4
Rs
Rt°
T
+
B6B3
DTU 614
B1
T
HT
B7
T
Mp
Mv
DTU 614
Ys
+
+
+RH
H
B6
B6
HT H
B6
0
24 V
~
24
M
B5
B4MB3B2MB1
DTU 614
B6
24 0 0
B7 G
24
D
E2B8 E1 C
Ys 0C
Ys
Y
0
RH
B6
H
312
B6 – Room or extract humidity detector
RH – Humidity set point adjuster (optional)
Ys – Progressive humidifier control
Ys-Cont rol :
HUMIDIFICATION
M3.6
Detectors Layout
6– 8
M3.1
12.3– Heat recuperator On-Off control
Rs
132
Y
1
Co 3
Cl
2
Op
B1
M
B5
B4MB3B2MB1
11 12 13 14
DTU 614
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
1Y1
3
0
2
B4
T
B7
T
Mv
NL
Mp
NL
0
24 V
~
24

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COSTER
13. USE OF Y OUTPUT– EXAMPLES
13.2– 1 Winter heating, summer 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
B7 – Battery frostprotection detector
Mu – Humidifier On-Off control
Mv – Fan On-Off control
Mp – Pump On-Off control
Rt°– Temperature set point adjuster (optional)
RH – Humidity set point adjuster (optional)
Y – Heating modulating control
B1 – Flow temp. detector
B2 – Outside temp. detector (for compensation)
B3 – Room or extract temp. detector
B6 – Room or extract humidity detector
B7 – Frostprotection detector
Mu – Humidifier On-Off control
Mv – Fan On-Off control
Mp – Pump On-Off control
Rt°– Temperature set point adjuster (optional)
RH – Humidity set point adjuster (optional)
Y – Winter heating, summer cooling modulating
control
13.1– 1 Preheating modulating battery
– 1 Humidifying On-Off unit
13.3– 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
Mu – Humidifier On-Off control
Mv – Fan On-Off control
Rt°– Temperature set point adjuster (optional)
RH – Humidity set point adjuster (optional)
Y – On-Off heating control
Detectors Layout
123–5678
M3.1
Y : MODULATiNG
Run T ime : xx s
M3.4
Y:HEATING
M3.5
Season Swi tch ing
NO
M3.2
Detectors Layout
123–567 8
M3.1
Y : MODULATING
Run T ime : xx x s
M3.4
Y:HEATING
M3.5
Season Swi tch ing
XXXXXXXXX
M3.2
Detectors Layout
123–56– 8
M3.1
Y:2STAGES
M3.4
Y:HEATING
M3.5
Season Swi tch ing
NO
M3.2
YMu
+
B6B3
B2
DTU 614
T
B1
T
HT
RHRt°
Mp
Mv
B7
T
YMu
+
–
B6B3
B2
DTU 614
T
B1
T
HT
RHRt°
Mp
Mv
B7
T
YMu
B6B3
B2
DTU 614
T
B1
T
HT
RHRt°
Mv
Y
MB1
11 12 13 14
DTU 614
56 7 24 0 08 9 10
24
1 2 3 4
D
E2E1 C
0C
Mv
NL
MB3 B4B2 MB5 B6 B7
B2B1 Rt°B3 RH B6
H
312
T
TT
G B8
Mu
NL
Ys
cs
0
Win Sum
1º 2º
0
24 V
~
24
Y
1
Co 3
Cl
2
Op
MB1
11 12 13 14
DTU 614
56 7 24 0 08 9 10
24
1 2 3 4
D
E2E1 C
0C
Mv
NL
Mp
NL
MB3 B4B2 MB5 B6 B7
B2B1 Rt°B3 RH B6
H
312
T
TT
G B8
Mu
NL
Ys
cs
0
Win Sum
B7
T
0
24 V
~
24
Y
1
Co 3
Cl
2
Op
MB1
11 12 13 14
DTU 614
56 7 24 0 08 9 10
24
1 2 3 4
D
E2E1 C
0C
Mv
NL
Mp
NL
MB3 B4B2 MB5 B6 B7
B2B1 Rt°B3 RH B6
H
312
T
TT
G B8
Mu
NL
Ys
B7
T
0
24 V
~
24

9
E 121 - DTU 614 C2 Eng. 04.07.01
We reserve the right to make changes without notice
COSTER
14. 3 OR 4 BATTERY SYSTEM CONTROL (DTU644 + DTU 614) – EXAMPLES
14.1– 1 Winter preheating with antifreeze control modulating battery
– 1 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
B7 – Frostprotection detector
Mv – Fans
Mu – Humidifier On-Off control
Y1 – Winter preheating modulating control
Y2 – Summer cooling/dehumidifying modulating control
Y3 – Post-heating modulating control
Rt°– Temperature set point adjuster (optional)
RH – Dehumidification set point adjuster (optional)
Detectors Layout
–––––678
M3.1
Detectors Layout
1 2 3– 5 6––
M3.1
Y1 : MODULATING
Run T ime :xx xs
M3.4
Y1 -Wi n :PREHEAT .
Y1-Sum:OFF
M2.6
Y2 : MODULATING
Run Time :xxxs
M2.7
Y2-Win:OFF
Y2 - Sum: COOL+DEHU
M2.8
Y3-Win:HEATING
Y3-Sum:HEATING
M2.10
Season Swi tching
FR CONTROL ss
M3.2
Y3: MODULATING
Run t ime : xxxs
M2.9
Season Swi tch ing
XXXXXXXXX
M3.2
13.4– 1 Winter heating, summer cooling modulating battery with heat pump season switching
– 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
B7 – Frostprotection detector
Mu – Humidifier On-Off control
Mv – Fan On-Off control
Mp – Pump On-Off control
Rt°– Temperature set point adjuster (optional)
RH – Humidity set point adjuster (optional)
Y – Winter heating, summer cooling
modulating control
Ycs – Heat pump season control
13.5– 1 Winter heating, summer cooling On-Off battery with heat pump season switching
– 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
Mu – Humidifier On-Off control
Mv – Fan On-Off control
Rt°– Temperature set point adjuster (optional)
RH – Humidity set point adjuster (optional)
Y – Winter heating, summer cooling
On-Off control (heat pump)
Ycs – Heat pump season control
Detectors Layout
123–5678
M3.1
Y : MODULATING
Run T ime : xxx s
M3.4
Y-Win:HEATING
Y - Sum: COOLI NG
M3.5
Season Swi tching
XXXXXXXXX
M3.2
Detectors Layout
123–5678
M3.1
Y:2STAGES
M3.4
Y-Win:HEATING
Y - Sum: COOLI NG
M3.5
Season Swi tching
XXXXXXXXX
M3.2
Use de t ec tor B4
PREHEAT I NG
M3.3
Output 8-9-10:
CONTROL
M2.3
Y : MODULATING
Run t ime : xxxs
M3.4
Y -Wi n : FROSPROT.
Y-Sum:OFF
M3.5
YMu
+
–
B6B3
B2
DTU 614
T
B1
T
HT
RHRt°
Mp
Mv
Ycs
B7
T
YYcs Mu
B6B3
B2
DTU 614
T
B1
T
HT
RHRt°
Mv
+
–
H T
TT
T
➚
➚
B6
B1
B2
Y1 Y2
B4
Mu
Mv
Rt°RH
B7
B3
Y3
T
+ +–
DTU 644
DTU 614
Y
MB1
11 12 13 14
DTU 614
56 7 24 0 08 9 10
24
1 2 3 4
D
E2E1 C
0C
Mv
NL
Mp
NL
MB3 B4B2 MB5 B6 B7
B2B1 Rt°B3
T
TT
G B8
Mu
NL
Ys
cs
0
Win Sum
Ycs
1
Co 3
Cl
2
Op CoWinSum
0
24 V
~
24
RH
B6
H
312
B7
T
Y
MB1
11 12 13 14
DTU 614
56 7 24 0 08 9 10
24
1 2 3 4
D
E2E1 C
0C
Mv
NL
MB3 B4B2 MB5 B6 B7
B2B1 Rt°B3 RH B6
H
312
T
TT
G B8
Mu
NL
Ys
cs
0
Win Sum
Ycs
1stSt
2ndSt CoWinSum
0
24 V
~
24
Y1
1
Co 3
Cl
2
Op
B2
B1
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
B6
H
312
1
Co 3
Cl
2
Op
T
T T
0
24 V
~
24
Y3
1
Co 3
Cl
2
Op
MB1
11 12 13 14
DTU 614
56 7 24 0 08 9 10
24
1 2 3 4
D
E2E1 C
0C
Mv
NL
B7
M
B3 B4B2 MB5 B6 B7 G B8
T
0
24 V
~
24
Ys
Mu
NL
Mv
cs
0
Win Sum
B4
T
RH

10
E 121 - DTU 614 C2 Eng. 04.07.01
We reserve the right to make changes without notice
COSTER
14.2– 1 Winter preheating modulating battery with antifreeze control
– 1 Summer cooling/dehumidifying modulating battery
– 1 Winter post-heating 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
B4 – Preheating temperature detector
B6 – Room or extract humidity detector
B7 – Frostprotection detector
Mu – Humidifier On-Off control
Mv – Fans
Y – Winter preheating modulating control
Y1win – Winter postheating modulating control
Y2 – Summer cooling/dehumidifying modulating control
Y3sum – Summer postheating On-Off control
Rt°– Temperature set point adjuster (optional)
RH – Dehumidification set point adjuster (optional, for humidifying only)
Detectors Layout
123–56––
M2.1
Y1 : MODULATING
Run t ime : xxxs
M2.5
Y1-Win:HEATING
Y1-Sum:OFF
M2.6
Y2 : MODULATING
Run t ime : xxxs
M2.7
Y2-Win:OFF
Y2 - Sum:COOL+DEHU
M2.8
Y3-Win:OFF
Y3-Sum:HEATING
M2.10
Season Swi tch ing
FR CONTROL cs
M2.2
Y3: 2 STAGES
M2.9
Use de t ec t o r B4
PREHEAT I NG
M3.3
Y : MODULATI NG
Run t ime : xxxs
M3.4
Y -Wi n : PREHEAT .
Y-Sum:OFF
M3.5
Output 8-9-10:
CONTROL
M2.3
Season Swi tching
XXXXXXXXX
M3.2
14.3– 1 Winter preheating with antifreeze control and summer cooling/dehumidifying modulating battery
– 1 Winter post-heating modulating battery
– 1 Summer post-heating On-Off battery
– 1 Humidifying On-Off unit
B1 – Flow temperature detector
B2 – Outside temperature detector (for compensation)
B3 – Room or extract temp. detector
B4 – Preheating temperature detector
B6 – Room or extract humidity detector
B7 – Frostprotection detector
Mu – Adiabatic humidifier On-Off control
Mv – Fans
Y – Winter preheating control
Y1iwin – Winter postheating control
Y2 – Summer cooling/dehumidifying control
Y3sum – Summer postheating control
Rt°– Temperature set point adjuster (optional)
RH – Dehumidification set point adjuster (optional, for humidifying only)
De t ec t ors Layout
––––––78
M3.1
Detectors Layout
123–56––
M2.1
Y1 : MODULATING
Run t ime : xxxs
M2.5
Y1 -Wi n : PREHEAT .
Y1 - Sum:COOL+DEHU
M2.6
Y2 : MODULATING
Run t ime :xxxs
M2.7
Y2-Win:HEATING
Y2-Sum:OFF
M2.8
Y3-Win:OFF
Y3-Sum:HEATING
M2.10
Season Swi tch ing
FR CONTROL ss
M2.2
Y3: 2 STAGES
M2.9
Y : MODULATI NG
Run t ime : xxxs
M3.4
Y-Win:FROSTPR.
Y-Sum:OFF
M3.5
Use de t ec t or B4
PREHEAT I NG
M2.4
Output 8-9-10:
CONTROL
M2.3
Season Swi tching
XXXXXXXXX
M3.2
De t ec t ors Layout
–––4––7 8
M3.1
B2
B1
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
B6
H
312
1
Co 3
Cl
2
Op
Y3.sum
T
T T
Y
1
Co 3
Cl
2
Op
B4
MB1
11 12 13 14
DTU 614
56 7 24 0 08 9 10
24
1 2 3 4
D
E2 C
0C
T
Mv
NL
MB3 B4B2 MB5 B6 B7 E1G B8
Mu
NL
1
Co 3
Cl
2
Op
Y1.win
1º 2º
0
24 V
~
24 0
24 V
~
24
Ys
Mv
cs
0
Win Sum
B7
T
RH
H T
TT
T
➚
B6
B1
B2
YY2
B4
Mu
Mv
Rt°
B7
B3
Y1.win
T
+ +–
DTU 644
DTU 614
Y3.sum
➚
RH
B2
B1
M
B5
B4MB3B2MB1
11 12 13 14
DTU 644
B6
5 6 7 24 0 0 8 9 10
Rt°
B3
Y2.win
B7 G
24
1234
D
E2B8 E1 C
Ys 0C
B6
H
312
1
Co 3
Cl
2
Op
Y3.sum
T
T T
MB1
11 12 13 14
DTU 614
56 7 24 0 08 9 10
24
1 2 3 4
D
E2 C
0C
Mv
NL
Mp
NL
MB3 B4B2 MB5 B6 B7 E1G B8
Mu
NL
1
Co 3
Cl
2
Op
Y1
1º 2º
Mv
0
24 V
~
24 0
24 V
~
24
B4
T
Ys
B7
T
RH cs
0
Win Sum
H T
TT
T
➚
B6
B1
B2
Y1
B4
Mu
Mv
Rt°
B7
B3
Y2.win
T
+
–+
DTU 644
DTU 614
Y3.sum
➚
RH

11
E 121 - DTU 614 C2 Eng. 04.07.01
We reserve the right to make changes without notice
COSTER
16. TEMPERATURE CONTROLLER
Temperature control can operate alternatively with:
• Room or extract air detector B3 only:
Fixed point room Heating and Cooling temperature control
• Discharge air detector B1 only:
Fixed point flow Heating and Cooling temperature control
• Room or extract air detector B3 and discharge air detector B1:
Flow Heating and Cooling temperature control according to room temperature deviation
16.1Desired temperatures
Desired temperatures for heating and cooling
Can be set in and if B3orB1andB3areconnected
or in and if only B1 is connected
If the set point adjuster Rt°is connected, these values can be changed remotely
The value of the change is displayed , in ±°C, next to the set values.
16.2Proportional band and Integral Time
Basic temperature control parameters, Proportional Band and Integral Time, apply to heating
control (Room: if B3 only or B1 + B3 are connected, or Flow: if B1 only is connected) and can be
changed in the CALIBRATION menu.
TheProportionalBandparameter(in±°C)isusedforothertemperaturesettingsthroughmodifiable
multipliers that adapt it to the different types of controls (Cooling; Preheating; Auxiliary heating;
Dew point; Air Damper).
Examples of Pb multipliers with
Pb Flow (heating) = Pb Room (heating) x 5.0 (= ±10 °C)
Pb Cooling (room) = Pb heating (room) x 0.5 (=±1 °C)
Pb Cooling (flow) = Pb heating (flow) x 0.5 (= ±5 °C)
Pb Preheating = Pb flow heating x 1.0 (= ±10°C)
Pb Dew point = Pb room heating x 1.0 (= ±2 °C)
15. OPERATION DTU 614 is a microprocessor-operated digital controller for temperature and relative humidity
control in air handling units composed of:
– 1 unit with 3-wire modulating control, or 1, 2 or 3-stage On-Off control. The unit can have the
following functions: Preheating; Heating; Cooling; Heating with heat pump.
– 1 adiabatic humidification On-Off unit
or vapor humidification unit with 0...10 V– control (alternative to air
mixing or heat recuperating unit)
– 1 air mixing or heat recuperating unit with 0...10 V– (alternative to vapor humidifier)
To adjust the controller to system requirements, proceed as follows:
– configure system according to connected detectors and controls
–assigncontroloutputsYtheactionitisrequiredtoperformalsoaccordingtoseasonswitching,
if applicable.
Det ectors Layou t
–––––––
M3.1
Det ectors Layou t
––––5––
M3.1
Y:HEATING
M3.5
Y-Win:HEATING
Y - Sum: COOLI NG
Det ectors Layou t
1–3––––
Det ectors Layou t
1––––––
Det ectors Layou t
––3––––
M3.1
Hea t T . Room
Des i r . : 20 . 0c±0.0
M0.5
Hea t T . F l ow
Des i r . : 20 . 0c±0.0
Cool T. Room
Des i r . : 25 . 0c±0.0
M0.7
Cool T. Flow
Des i r . : 25 . 0c±0.0
Temper . Room
Prop.band:±2.0c
M2.1
Temper . Room
Integr.Time:10m
M2.2
Pb Coo l i ng =
Pb Hea t i ng x0 . 5
M3.14
Pb Fl ow =
Pb Room x5 . 0
M3.13
Pb Pr ehea t i ng =
Pb Hea t F l ow x1 . 0
M3.15
Pb Dew po int =
Pb Hea tRoom x1 . 0
Temper . Room
Prop.Band:±2.0c
M2.1

12
E 121 - DTU 614 C2 Eng. 04.07.01
We reserve the right to make changes without notice
COSTER
Pb Air damper = Pb room heating x 1.0 (= ±2 °C)
DT recuperator = Pb room heating x 1.0 (=±2 °C)
Pb Frostprotection = Pb room heating x 1.0 (=±10°C)
When detectors B1 and B3 are connected, the flow temperature (B1) Integral Time parameter is
displayedonadisplaypagetoallowforchangestobemadeseparatelyfromtheroomtemperature
parameter.
Pb Dampers =
Pb Hea tRoom x1 . 0
M3.16
dT Recuperator =
Pb Hea tRoom x1 . 0
Flow Temperature
Integr.Time:10m
M2.3
Pb Frostprotec t=
Pb Hea tF l ow x5 . 0
M3.17
16.3Control through room detector (B3) only or discharge air detector (B1) only
The controller compares the values: or if B3 is used
or or if B1 is used
against thetemperaturemeasuredbydetectorB1or
B3, and calculates the load values for Heating QHea
and for Cooling QCoo according to the deviation
measured.
16.4Control through room detector (B3) and discharge air detector (B1)
The controller compares the values: or
against the temperature measured by
detectorB3,andcalculatestheloadvalues
for desired flow temperatures for Heating
T°fHea and for Cooling T°fCoo according
to the deviation measured and values set:
• Min : – – c Max : – – c = Heating flow temp. min and max values determine the BpHea.
proportional band’s range.
The minimum value T°fminHea helps eliminate annoying cold drafts in the room.
• Min : – – c Max : – – c = Cooling flow temp. min and max values determine the BpCoo
proportional band’s range.
The controller compares desired flow temperatures
forHeatingT°minHeaandforCoolingT°fCooandfor
Cooling T°fCoo against the temperature measured
bythedischargeairdetectorB1andderivestheload
values for Heating Qhea and for Cooling Qcoo
according to the deviations detected.
To prevent hot air stratification during the Heating stage it is possible to prevent the heating flow
temp. T°fHea from exceeding actual room temperature by more than a certain value.
To prevent condensation in the air duct during the Cooling stage it is possible to prevent the
cooling flow temp. T°mCoo from dropping below actual room temperature by more than a certain
value.
Hea t T . Room
Des i r . : 20 . 0c±0.0
M0.5
Heat T. Flow
Des i r . : 20 . 0c±0.0
Coo l T . Room
Des i r . : 25 . 0c±0.0
M0.7
Cool T. Flow
Des i r . : 25 . 0c±0.0
Heat ingLimi t Max
Flow–Room : 10c
M2.5
Coo l ingLimi t Max
Flow–Room : 7c
M2.7
Heating Flow
Min:18c Max:50c
M2.4
Hea t T . Room
Des i r . : 20 . 0c±0.0
M0.5
Hea t T . Room
Des i r . : 25 . 0c±0.0
M0.7
Cooling Flow
Min: 8c Max:25c
M2.6
0%
100%
T° Hea
Pb Hea
50%
–+
t°
Q
Hea
0%
100%
50%
–+
t°
T°
Coo
Pb Coo
Q Coo
t°r
+
T°f maxHea
–
Pb Hea T°f Hea
T°f minHea
T°r Hea
T°f LimHea
t°r
+
–
Pb Coo
T°f Coo
T°r Coo
T°f minCoo
T°f maxCoo
T°f LimCoo
0%
100%
T°f Hea
Pbf Hea
50%
–+
t°f
Q Hea
0%
100%
50%
–+
t°f
T°f
Coo
Pbf Coo
Q Coo

13
E 121 - DTU 614 C2 Eng. 04.07.01
We reserve the right to make changes without notice
COSTER
16.5Operating modes The controller can operate in the following modes: – ON Winter; OFF Winter
– ON Summer; OFF Summer
– ON ; OFF
depending on: : – current season according to setting inM3.2(see paragraph 24)
– Programme in use choice in M0.2or in M0.4
– Status of season switching (ss) and/or the control c1 (terminals D-E1-E2).
Examples :
• With mode is: – When Program in use requires unit to be operating
– WhenPrograminuserequiresunittobeoffandcontact
c1 (D-E1) is closed.
–WhenPrograminuse requires unittobeoffandcontact
c1 (D-E1) is closed.
• With
or and outside temp. imposes winter operating mode
or and room temp. imposes winter operating mode
or and season periods impose winter operating mode
mode is : – When Winter Program in use requires unit to be operating
– When Winter Program in use requires unit to be off and contact
c1 (D-E1) is closed.
– When Winter Program in use requires unit to be off and contact
c1 (D-E1) is open.
• With
or and outside temp. imposes summer operating mode
or and room temp. imposes summer operating mode
or and season periods impose summer operating mode
mode is : – When Summer Program in use requires unit to be operating
– WhenSummerPrograminuserequiresunittobeoffandcontact
c1 (D-E1) is closed.
–WhenSummerPrograminuserequiresunittobeoffandcontact
c1 (D-E1) is open.
• With with contact ss in winter (D-E1 closed)
mode is : – When Winter Program in use requires unit to be operating
– When Winter Program in use requires unit to be off
• With with contact ss in summer (D-E2 closed)
mode is : – When Summer Program in use requires unit to be operating
– When Summer Program in use requires unit to be off
• With with contact ss in winter (D-E1 closed)
mode is : – When Winter Program in use requires unit to be operating
– When Winter Program in use requires unit to be off and contact
c1 (D-E1) is closed.
– When Winter Program in use requires unit to be off and contact
c1 (D-E1) is open.
• With with contact ss in summer (D-E2 closed)
mode is : – When Summer Program in use requires unit to be operating
– WhenSummerPrograminuserequiresunittobeoffandcontact
c1 (D-E2) is closed.
– When Summer Program in use requires unit to be off
and contact c1 (D-E2) is open.
Cu r r en t mode :
ON Wi n t e r
M0.3
Season Swi tching
NO
M3.2
Cur ren t mode :
ON
M0.3
Cur r en t mode :
OFF
M0.3
Season Swi tching
WINTER
M3.2
Cur r en t mode :
ON Wi n t e r
M0.3
Cur r en t mode :
OFF Wi n t e r
M0.3
Cur r en t mode :
ON Summer
M0.3
Cur r en t mode :
OFF Summer
M0.3
Season Swi tching
FR. OUTS IDE T .
Season Swi tching
FR . ROOM T .
Season Swi tching
FR . SEASONS
Season Swi tching
SUMMER
M3.2
Season Swi tching
FR . OUTS I DE T .
Season Swi tching
FR . ROOM T .
Season Swi tching
FR . SEASONS
Cur r ent mode :
ON Wi n t e r
M0.3
Cur r en t mode :
OFF Wi n t e r
M0.3
Season Swi tching
FR CONTROLss+c1
M3.2
Cur r en t mode :
ON Summer
M0.3
Cur r ent mode :
OFF Summer
M0.3
Season Swi tching
FR CONTROL ss
M3.2
Season Swi tching
FR CONTROL ss
M3.2
Season Swi tching
FR CONTROLss+c1
M3.2
Cur rent mode :
ON Wi n t e r
M0.3
Cur r en t mode :
OFF Wi n t e r
M0.3
Cur r en t mode :
ON Summer
M0.3
Cur r en t mode :
OFF Summer
M0.3

14
E 121 - DTU 614 C2 Eng. 04.07.01
We reserve the right to make changes without notice
COSTER
17. OUTSIDE COMPENSATION OF TEMPERATURE
Compensation functions are only enabled if the outside detector B2 is connected. Such functions
can be as follows:
• Compensation of desired flow Heating and Cooling temperatures;
• Summer compensation of desired room or flow Cooling temperatures;
Desired temperature adjustment values,
Resulting from compensation, are displayed in and
17.1Climatic compensation of desired flow Heating and Cooling temperatures
This function can be only used if detectors B1 and B2 are connected, and Detector B3 is not
connected. It is useful when the primary air system, in addition to ensuring air circulation, is also
intended to make up for ambient dispersion.
Desired flow Heating temperature
The controller increases desired temp. when outside temperature drops,
according to settings:
• Heating Comp. : NO = function disabled
YES = function enabled
• Opt : xx
c = default outside temp. : winter
• Fpt : xx
c = default flow temp. : winter
Desired flow Cooling temperature
The controller decreases desired temp. when outside temperature
increases, according to settings:
• Heating Comp. :NO = function disabled
YES = function enabled
• Opt : xx c = default outside temp. : summer
• Fpt : xx
c = default flow temp. : summer
17.2Summer compensation of desired room Cooling temperature
Thisfunctioncanbeonly used if detectorsB2andB3orB1,B2andB3areconnected.Itisusefulto
prevent excessive temp. differences between room and outside.
The controller maintains temp. at a constant level
untiloutsidetemp.exceedsthevalueT°Coo+∆t°,whenthisoccursT°Coo
is increased by 1°C per each °C increase in outside temp.
• Heating Comp.: NO = function disabled
YES = function enabled
• Diff. O. T-R .T : xx
c = maximum allowed difference between
outside and room temp.
Cool T. Room
Des i r . : 25 . 0c±0.0
M0.7
Summer Compen:NO
Diff.O.T-R.T: 6c
M2.10
Hea t i ng Comp. :NO
Ppt :–10c Fpt :50c
M2.8
Coo l i ng Comp. :NO
Op t : +35c Fp t : 10c
M2.9
Det ectors Layout
12––––––
M3.1
Det ectors Layout
123–––––
M3.1
Flow Cool T.
Des i r . : 25 . 0c±0.0
M0.7
Flow Heat. T.
Des i r . : 20 . 0c±0.0
M0.5
Flow Heat. T.
Compensa t . : ±00.0
M0.6
Flow Cool T.
Compensa t . : ±00.0
M0.8
–+
–
+
T°f Hea
t°o
T°f
Hea
T°f Hea
f p T°
o
p T°
–+
–
+
T°f Coo
t°o
T°f
Coo
T°f RCoo
f p T°
T°o
p
–+
–
+
T° Coo
t°o
T°
Coo
T° Coo
∆t°1°C
1°C

15
E 121 - DTU 614 C2 Eng. 04.07.01
We reserve the right to make changes without notice
COSTER
18. RELATIVE HUMIDITY CONTROLLER
The function is only enabled if detector B6 is connected.
Desired Humidification and
Dehumidification values can be set in: and
If set point adjuster R% is connected, such values can be changed remotely.
The value of the change is displayed in ±% next to the set values.
The controller compares the desired values against relative humidity as
measuredbydetectorB6,andcalculatestheloadvaluesforHumidification
QhumiandforDehumidification Qdehuaccordingtodeviationsdetected:
• Prop. Band : – – . – % = Humidity proportional band in %
• Integral time
:–– m = Humidity integral time in minutes
TheHumidification loadis always assignedto the Mu controloutput for an
adiabatic humidifier On-Off control, and can also be assigned to the Ys
control output for a 0...10 V– vapor humidifier control.
The Dehumidification
Qdehu load can only be assigned to the Ys control
output for swimming pool dehumidification with outside air.
Humi d i f i ca t i on
Des i r . : 50 %±00
M0.9
Dehumidification
Des i r . : 60 %±00
M0.10
Re l a t i veHumi di t y
Prop.Band:±6.0%
M2.11
Re l a t i veHumi di t y
Integr.Time: 6m
M2.12
Det ectors Layou t
–––––6– 8
M3.1
19. PREHEATING OR DEW POINT CONTROL
The function is only enabled if detector B4 is connected.
It can be used for the following purposes:
• PREHEATING = preheater battery unit control
accordingtohumidificationcondensationtemperature
through duct mounting detector B4, installed
downstream of the humidification unit.
• DEW POINT = Dehumification value compensation to
limitdewbuilduponswimmingpoolwindows–detector
B4 should be placed so that it adheres to the glass
19.1Preheating temperature control
If detector B3 or detectors B1 and B3 are connected, the
controller calculates preheating temp. T°pre according to
the following:
– Condensation curve calculated on the basis of room
temp.(t°r)and room humidity (h%a)actual
values
– Minimum value set in M0.12
– Manual adjustment in M0.13 if applicable
The controller compares preheating temp. T°pre with the
temp. measured by detector B4, and calculates the load
value for Preheating Qpre according to the deviation
detected.
– Minimum value set in M0.12
– Manual adjustment in M0.13 if applicable
The controller compares dew point temp. T°dp with the temp. measured by detector B4, and
calculates the reduction of the value required for Dehumidification
H%Dehu according to the
deviation detected.
19.2Swimming pool windows dew point temperature control
Thecontrollercalculatesthedew point temp.T°dp accordingto thefollowing:
– Condensation curve calculated on the basis of room
temp.(t°r)and room humidity (h%a)actual values
– Minimum value set in M0.12
– Manual adjustment in M0.13 if applicable
The controller compares dew point temp. T°dp with the temp. measured by
detector B4, and calculates the reduction of the value required for
Dehumidification H%Dehu according to the deviation detected.
Preheat ing T.
Calc. :16.0c±0.0
M0.13
Dew point T.
Calc. :16.0c±0.0
M0.13
Dehumidification
Compensa t . : ±0.0
M0.11
Det ectors Layou t
–––4––––
M3.1
Use de tec tor B4
PREHEAT I NG
M3.3
Use de tec tor B4
DEW POI NT
0%
100%
Q Dehu
50%
–+
h%
H%
Dehu
Pbu
0%
100%
H%Humid
Pbu
50%
–+h%
QHum
T° pre
T° rv
25°
15°
5°
20°
10°
30°
20% 30% 40% 50% 60% 70% 80% 90%
h% a
t° r
6°
10°
15°
20°
25°
30°
35°
t°
r
T° min
T° pre
–+
0%
100%
50%
Q Pre
t° pre
Pb pre
–+
0%
100%
H% Dehu
t°v
Pb
pr
T°pr
H% Dehu

16
E 121 - DTU 614 C2 Eng. 04.07.01
We reserve the right to make changes without notice
COSTER
20. FROSTPROTECTION TEMPERATURE CONTROL
The function is only enabled if detector B7 is connected .
Thecontrollercompares the setantifreezetemp.with the temp.measured
bydetectorB7,andcalculatestheQafloadvalue
accordingtothedeviation
detected and the PI parameters.
The Qaf load value acts in priority with the Qpre load or Qhea load.
If the controller has turned off the Mp pump, when the Qaf load value exceeds the 10% value the
controller turns it on again, and turns it off when it drops to 0%.
If the controller has turned on the Mv fan, when the Qaf load value reaches the 100% value the
controllerturns the fanoff,and cancelstheYs air dampercontrol signal (closing);when it dropsto
0%, the controller turns on the fan and restores the air damper control signal.
Des . Frost p: 7 . 0c
Act . Fros tp: 35 . 0c
M0.14
21. HEAT PUMP CONTROL
If the Air Handling Unit is composed of a direct-exchange heat
pump, output Y can be assigned the HT.P.HEA.
winter function.
Load QH.pmp replicates load Qhea exactly, the only difference
being that when outside temp. drops below the T°omin value, load
QH.pmp is cancelled.
Y-Win:HEATPUMP
Y - Sum: COOL I NG
M3.5
M2.17
Minim. Outside T.
Hea t . pump : ––c
Det ectors Layout
––––––7–
M3.1
T° af
–+
0%
100%
50%
Q af
t° af
Pb af
0%
100%
50%
–+
t° o
1°C
T°o min
QHea
QHea.P.Cal
50%100% 0%
Q
Hea

17
E 121 - DTU 614 C2 Eng. 04.07.01
We reserve the right to make changes without notice
COSTER
22. CONTROL OUTPUTS
22.1Control output Y Outputs Ycan be configured as:
• Y - MODULATING= modulating control for 3-wire valves or 3-wire
signal converters into 0...10 V– or step
controllers.
2 STAGES = 2-stage On-Off control (1 ; 1+2) for solenoid
valves, pumps, humidifiers, burners,
refrigerators, 2 equal-load electric batteries,
etc.
3 STAGES = 2-stageOn-Offcontrol(1;2;1+2)for2unequal-
load electric batteries.
• Stroke time: xxx s = valve actuator stroke time. It only appears if control is MODULATING.
Output Y must be assigned the type of action (load) which it must perform. E.g.: Heating.
If Season Switching is enabled in M3.2,a different action can be assigned for each season.
E.g.: Y – Win: Preheating; Y – Sum: Cooling.
• Y - .....: PREHEAT = Preheating QPre
HEATING = Heating QHea
HTP HEA = Heating through heat pump QHea.P.Cal
COOLING = Cooling Qcoo
FROSTPROT.= Frostprotection Qfrp (antifreeze control through one valve controlled
by another controller)
OFF = Not used in current season
22.2Mu adiabatic humidifier control output
OutputMu (8-9-10)usestheQhumiloadtocontroltheadiabatichumidifier:
While operating :– when setting is ON (only if the fan controlMv is on,
and only in Winter if season switching is activated)
Off : – when setting is OFF
– in Summer, if season switching is activated
– when setting is ON, if the fan controlMv is off,
due to antifreeze temperature (B7)
22.3Mv fan control output
The system’s fan Mv (output 13-14) is :
On : – when setting is ON
Off : – when setting is OFF
– whensettingis OFF : when loadvalueQfrpexceeds10%,due to antifreeze temperature(B7)
22.4Mp pump control output
The system’s pump Mp (output 11-12) is :
On : – when setting is ON
–whensettingis OFF : when loadvalueQfrpexceeds10%,duetoantifreeze temperature (B7)
Off : – when setting is OFF
Y - MODULATING
Run t ime :120s
M3.4
100%
50%
0%
Q
0%
Y
100%50%
Y : PREHEAT .
M3.5
Y -Wi n : PREHEAT .
Y-Sum:OFF
0%
Q
Y
100%50%
Off
Off
On
On
1stSt
2ndSt
0%
Q
Y
100%1/3
Off
Off
On
On
1stSt
2ndSt
2/3
Q Humi
On
0%
Off
Mu
100%50%

18
E 121 - DTU 614 C2 Eng. 04.07.01
We reserve the right to make changes without notice
COSTER
23. OUTPUT Ys Output Ys with 0...10V– control signal is only enabled when the Mv fan is operating, and can be
used for:
– AIR DAMPER TEMP. = air damper control based on temp. comparison
– HUMIDIFICATION = 0…10 V– vapor humidifier control.
– DEHUMIDIFICATION = Air damper control for room dehumidification (swimming pools)
– RECUPERATOR = Heat recuperator control
23.1Air damper control based on temperature comparison
Wheneveractualoutsidetemperaturet°rexceedsthetarget
T°rHea value, the controller starts the progressive opening
of outside air through the PI feature.
Wheneveractualoutsidetemperaturet°rexceedsthetarget
T°rCoo value, and outside temperature t°oexceeds actual
roomtemperaturet°r,thecontrollershutsoutsideairthrough
the On-Off control.
23.20…10 V– vapor humidifier control
ThecontrollertransformstheHumidificationloadsignalQhumiintothe Ys
output 0...10V– signal to control vapor humidifiers.
23.3Air damper control for room dehumidification (swimming pools)
The controller transforms the Dehumidification load signal Qdehu into the
Ys output 0...10V– signal to control air dampers and use outside air to
dehumidify the room.
23.4Heat recuperator control
The recuperator is off (Ys signal = 0 V–) when:
–Theoutsidetemperaturevaluet°oiscomprisedbetween
T°rhea and T°rCoo.
The recuperator is on (Ys signal = 10 V–) when:
–Theoutsidetemperaturevaluet°oislowerthan actualroom
temperature T°rand lower than the target T°rHea value.
– The outside temperature value t°o is higher than actual room
temperature T°rand higher than the target T°rCoo value.
A signal converter is required to transform the 0...10V– signal into an On-Off control.
23.5Minimum flow temperature limit
In the cases shown:
When actual flow temperature t°f drops below the minimum flow value T°fmin
the controller shuts outside air with a modulating action.
23.6Minimum outside air
In the cases shown:
The minimum amount of outside air required to ensure air circulation can be controlled in two
different ways:
– directly through the controller display, or
– using a minimum air positioner Rs directly connected to the air damper actuator.
23.7Rapid function
In the cases shown:
If the Rapid Function is enabled, when the controller is switched on (E1-D or E2-D closed) the air
dampersremainshut 0%untilroomtemp. returns withintheT°rHeaandT°rCoo target valuerange.
Rapid Function deletes the value but not the setting for the minimum
positioner Rs.
Ys-Cont rol :
A I R DAMPER
M3.6
De t ec t ors Layout
–23–––––
M3.1
Ys-Cont rol :
RECUPERATOR
M3.6
Ys-Cont rol :
DEHUMID I F ICAT ION
M3.6
Ys-Outs ide Ai r
Minimum : xxx%
M2.13
Ys-Cont ro l :
DAMP. TEM
M3.6
Ys-Cont ro l :
DAMP. TEM
M3.6
Ys-Cont ro :
DEHUMI DI F ICAT ION
M3.6
Det ectors Layout
–––––6––
M3.1
Detectors Layout
–23–––––
M3.1
Ys-Cont ro l :
DAMP. TEM
M3.6
Ys-Cont ro l :
DEHUMI DI F ICAT ION
M3.6
Ys-RapidFunct ion
accensione: SI
M2.14
Ys -Outs ide Ai r
Minimum : xxx%
M2.13
Heating Flow
Min:18c Max:50c
M2.4
Ys-Cont rol :
HUMI D I F I CAT I ON
M3.6
De t ec t ors Layout
–––––6––
M3.1
t°o = t°r
t° o
+
0
10
–
t°o < t°r
1°CYs Pb s
T°r Hea T°r Coo
Y
Hea
Y
Coo
Ys min
t° f
+
–
T°f min
Pb s
t°o = t°r
t°o
+
0
10
–
t°o > t°r
Ys
T°rHea T°rCoo
t°o = t°r t°o < t°r
dTrec dTrecdTrec dTrec
10 V.
5 V.
0%
Q Humi
0 V.
Ys
100%50%
10 V.
5 V.
0%
Q Dehu
0 V.
Ys
100%50%

19
E 121 - DTU 614 C2 Eng. 04.07.01
We reserve the right to make changes without notice
COSTER
24. SEASON SWITCHING Thecontrollerswitchestheactionofoutput YandthepositionofseasoncontrolYsc dependingon
the selection: NO; WINTER; SUMMER; THROUGH ss CONTROL; THROUGH ss + c1 CONTROL;
AUTOM. BASED ON OUTSIDE TEMP.; AUTOM. BASED ON SEASON;
• Without season switching :
– the action of output Yis according to setting in
– season control Ysc cannot be used
• Manual season switching through display:
Winter: – the action of output Yis according to setting in
– season control Ysc is on Winter:
7-6 = closed; 7-5 = open.
Summer : – the action of output Yis according to setting in
– season control Ysc is on Summer: 7-6 = open; 7-5 = closed.
• Season switching according to position of season switch ss (D-E1-E2).
– with D-E1 closed and D-E2 open: action of output Yand season control Ysc to Winter
– with D-E1 open and D-E2 closed: action of output Yand season control Ysc to Summer
• Automatic season switching according to outside temp. (only if B2 is connected).
When outside temp. remains lower than
For a period exceeding
The controller switches the action of output Yand season control Ysc to Winter
When outside temp. remains lower than
For a period exceeding
The controller switches the action of output Yand season control Ysc to Summer
• Automatic season switching according to room temp. (only if B3 is connected).
When Heating
load value Qhea is higher than 0% and the
Cooling
load value Qcoo is 0%, the season control Ysc
switches to Winter
.
When Heating loadvalueQheais0%andthe Cooling load
value Qcoo is higher than 0%, the season control Ysc
switches to Summer.
•Automatic season switching according to season periods. In this case, the following conditions
may be true:
– Successive season periods :
Result: no intermediate periods
From Oct 15 to Apr 15 = Ysetting and Ycs season switch on Winter
From Apr 16 to Oct 14 = Ysetting and Ycs season switch on Summer
.
– Shortened season periods: :
Result: intermediate periods with unit off
From Oct 15 to Apr 15 = Ysetting and Ycs season switch on Winter
From Apr16 to May 14 = Ysetting on OFF andYcs season switch on Winter
From May15 to Sept 15 = Ysetting and Ycs season switch on Summer
From Sept 16 to Oct 14 = Ysetting on OFF and Ycs season switch on Summer
– Overlapping season periods :
Result: overlapping periods according to outside temperature
From Nov 2. to March14 : = Ysetting and Ycs season switch on Winter
From May 16 to Aug 31 : = Ysetting and Ycs season switch on Summer.
From March 15 to May 15 and from Sept 01 to Nov 01 :
when outside temperature stays below Winter Outside Temp.
for a period exceeding:
the controller switches Ysetting and Ycs season switch to Winter
when outside temperature stays above Summer Outside Temp.
for a period exceeding:
the controller switches Ysetting and Ycs season switch to Summer
Season Swi tching
FR . OUTS I DE T .
M3.2
Ou tWi n t er T . : 20c
De l ay : 24hrs
M2.15
Ou t SummerT . : 25c
De l ay : 4hrs
M2.16
Season Swi tching
NO
M3.2
Y -Wi n :XXXXXXXX
Y-Sum:
M3.5
Y-Win:
Y -Sum:XXXXXXXX
M3.5
Y - :XXXXXXXX
M3.5
Season Swi tching
FR . ROOM T .
M3.2
Season Swi tching
WINTER
M3.2
Season Swi tching
SUMMER
Season Swi tching
FR. SEASONS
M3.2
Winter Season
Fr:15.10to:15.04
M1.19
Summer Season
Fr:16.04to:14.10
M1.20
Winter Season
Fr:15.10to:15.04
M1.19
Summer Season
Fr:15.05to:15.09
M1.20
Winter Season
Fr:01.09to:15.05
M1.19
Summer Season
Fr:15.03to:01.11
M1.20
Ou tSummerT . : 20c
De l ay : 24h rs
M2.15
Ou tSummerT . : 25c
De l ay : 8hrs
M2.16
Season Swi tching
FR . CONTROL ss
M3.2
Season Swi tching
FR.CONTROL ss+c1
Q
Sum
Win
Ycs
Q
Hea
Q
Coo
0% 100%0%100%
7
65
7
65

20
E 121 - DTU 614 C2 Eng. 04.07.01
We reserve the right to make changes without notice
COSTER
25. DATE-TO-DATE PERIOD PROGRAMS
DTU 614 can start and shut down the air handling using:
– 25 24-hour programs
– 5 7-day programs
– 25 date-to-date period programs
25.1Assigning the program If Season Switching is disabled the program is assigned on a single page
If Season Switching is enabled, the program is assigned on
two separate pages, one for the Winter
season and one for
the Summer season.
25.224-hour programs
Setthenumberof24-hourprogramstobeused (1to25)inordertoeliminateunuseddisplaypages.
Ineach24-hourprogram(24hr1...24hr 25)youcansetupto6starttimes(h1...h6),assigningone
of the following modes to each start time:
• ON : – output Yactive
– system fan Mv on
– pump Mp on
• OFF : – output Yclosed or off (if On-Off type)
– system fan Mv off
– pump Mp off
Period start times must be entered in increasing order.
Unused times
(– – –) should be deleted by pressing the two + and – keys simultaneously. .
No unused times (– – –) should be left between programmed times.
25.37-day programs
Set the number of 7-day programs to be used (1 to 5) in order to eliminate unused display pages.
Ineach7-dayprogramyoucanassigneachdayoftheweekoneofthe24-hourprograms(24hr1...
25); ON; or OFF.
25.4Year periods Eachyearperiod,asdefinedbytheperiodstartandenddates,imposesanoperatingprogramthat
replaces the one currently in use.
At the end of each year period, the controller restores the normal program.
Set the number of year periods to be used, in order to eliminate unused display pages.
For each year period, select the program to be used:
– 7-DAY 1...4; 24-HOUR 1...25; ON; OFF
Set data for each individual period:
• Per. 01 = selection of available periods
• Start : – NO = year period not used
– 00 = year period used; start time midnight
– 12 = year period used; start time 12 o’clock noon
• From - - . - - t o - - . - - = start and end day and month of the year period
For one-day periods set the same date as start and end date.
To cancel year period, press + and – keys simultaneously
25.5Season periods Season periods define the
winter and summer season periods.
Enter the start and end day and month of the winter season.
Enter the start and end day and month of the summer season.
To cancel periods, press + and – keys simultaneously
For use of season periods, please see paragraph 24. SEASON SWITCHING
25.6Summer time The controller can automatically change the current time of day at the beginning and end of the
daylight saving period.
– From
- -.- - = on the night of the last Saturday in March, the clock moves forward one hour
– to
- -.- - = on the night of the last Saturday in October, the clock moves backwards one hou
To cancel the period, press + and – keys simultaneously
M1.16
How many annua l
per iods ? 0
M1.17
Prog. Period 1
OFF
M1.18
AnnP 1 St ar t NO
Fr:--.--to:--.--
M1.19
Winter Season
Fr:--.--to:--.--
M1.21
Summer T ime
Fr:25.03to:27.10
31.19
Summer Season
Fr:--.--to:--.--
M1.2.7
Day l y 1hr1 6 . 00
ON
M1.1
How many day l y
Programmes ? 1
Program
DAI LY 1
M0.2
Season Swi tching
NO
M3.2
M1.8
How many weekly
Programmes ? 1
P r og r am Summer
DA I LY 1
M0.4
Program Winter
DAI LY 1
M0.2
M1.9
Week 1 :MONDAY
DAYLY 1