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.
1
Desired temperatures
Desired temperatures for heating and cooling
Can be set in
and
if B3 or B1 and B3 are connected
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.
2
Proportional 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.
The Proportional Band parameter (in
±
°
C) is used for other temperature settings through modifiable
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
– assign control outputs Y the action it is required to perform also according to season switching,
if applicable.
De t e c t o r s L a y o u t
– – – – – – –
M3.
1
De t e c t o r s L a y o u t
– – – – 5 – –
M3.
1
Y : HEAT I NG
M3.
5
Y -W i n : HEAT I NG
Y - Sum: COOL I NG
De t e c t o r s L a y o u t
1 – 3 – – – –
De t e c t o r s L a y o u t
1 – – – – – –
De t e c t o r s L a y o u t
– – 3 – – – –
M3.
1
He a t
T . Room
De s i r . : 2 0 . 0 c
±
0 . 0
M0.
5
He a t
T .
F l ow
De s i r . : 2 0 . 0 c
±
0 . 0
Coo l
T . Room
De s i r . : 2 5 . 0 c
±
0 . 0
M0.
7
Coo l
T .
F l ow
De s i r . : 2 5 . 0 c
±
0 . 0
T empe r . Room
P r op . b a n d :
±
2 . 0 c
M2.
1
T empe r . Ro om
I n t e g r . T i me : 1 0m
M2.
2
Pb Co o l i n g
=
Pb He a t i n g
x 0 . 5
M3.
14
Pb F l ow
=
Pb Ro om
x 5 . 0
M3.
13
Pb P r e h e a t i n g
=
Pb He a t F l ow x 1 . 0
M3.
15
Pb Dew p o i n t
=
Pb He a t Ro om x 1 . 0
T empe r . Ro om
P r o p . Ba n d :
±
2 . 0 c
M2.
1
