Carel HeaterSteam 4 UR002, User Manual

Page: 23 / 92

23
ENG
“heaterSteam” +0300087EN - rel. rel. 1.4 - 22.01.2021
•
to enable control, set:
Screen Screen desc. Parameter
Ea01 Control type Temperature (two probes)
Ea02 Control with 2 probes Set the weight of the two probes (0-100%)
Ea05 Modulating control Set: temperature set point (0-100 °C) (32-212°F)
diff erential (2-20°C) (3.6-36°F)
Minimum production (0-100%)
Maximum production (0-100%)
Ec01 Main probe type Select from: 0-1V, 0-10V, 2-10V, 0-20mA, 4-20mA
Ec02 Second probe type Select from: 0-1V, 0-10V, 2-10V, 0-20mA, 4-20mA
The controller will calculate the weighted average between the two
probes. The weight of the two probes can also be set.
M2 M9 M8
1 1 2 3 4 5 6 7 8 2 1 2
OUT H / T
M
+ (G)
M
ain pr
obe
OUT H / T
M
+ (G)
Sec
ond pr
obe
Fig. 4.z
The following probes can be connected:
CAREL probes for rooms DPWC111000
for air ducts DPDC110000; DPDC210000
for technical applications DPPC210000, DPPC210000
Note: non-CAREL active probes can be connected to the controller.
_________________________________________________________
CONTROL WITH ONE NTC TEMPERATURE PROBE (passive)
•
short-circuit terminals M2.7 – M2.8 (jumper) to enable production;
alternatively connect terminals M2.7 – M2.8 to a remote contact (e.g.:
switch, timer,...);
•
connect the main NTC room probe to terminals M2.1, M2.2;
•
to enable control, set:
Screen Screen description parameter
Ea01 Control type one temperature probe
Ea05 Modulating control Set: temperature set point (0-100 °C) (32-212°F)
diff erential (2-20°C) (3.6-36°F)
Minimum production (0-100%)
Maximum production (0-100%)
Ec01 Main probe type Set probe type: NTC
M2 M9 M8
1 1 2 3 4 5 6 7 8 2 1 2
Fig. 4.aa
_________________________________________________________
CONTROL WITH TWO NTC TEMPERATURE PROBES (passive)
•
short-circuit terminals M2.7 – M2.8 (jumper) to enable production;
alternatively connect terminals M2.7 – M2.8 to a remote contact (e.g.:
switch, timer,...);
•
connect the main NTC room probe to terminals M2.1, M2.2;
•
connect the second NTC probe to terminals M2.5, M2.6;
•
to enable control, set:
Screen Screen description parameter
Ea01 Control type Modulation with two temperature probes
Ea02 Control with 2 probes Set the weight of the two probes (0-100%)
Ea05 Modulating control Set: temperature set point (0-100 °C) (32-212°F)
diff erential (2-20°C) (3.6-36°F)
Minimum production (0-100%)
Maximum production (0-100%)
Ec01 Main probe type Set probe type: NTC
Ec02 Second probe type Set probe type: NTC
The controller will calculate the weighted average between the two
probes. The weight of the two probes can also be set.
M2 M9 M8
1 1 2 3 4 5 6 7 8 2 1 2
Fig. 4.ab
4.8 Alarm contact
The humidifi er controller is fi tted with a relay contact for remote signalling
of one or more faults or alarms. The alarm contact (250 Vac; max capacity: 2
A resistive - 2 A inductive) is connected to terminals M6.1, M6.2 and M6.3.
M1 M5 M6 M12
1 3 2 3 1 2 1 2 1 2
NC NO
CO
L N
Fig. 4.ac
M6.1 CO - Alarm common
M6.2 NC - NC alarm contact
M6.3 NO - NO alarm contact
4.9 Production request analogue output
The humidifi er controller is fi tted with an analogue output (0-10 V signal)
that refl ects the production request.
The production request output (0-10 V max 10 mA) is connected to
terminals M8.1, M8.2.
0-10V
M2 M9 M8
1 1 2 3 4 5 6 7 8 2 1 2
Fig. 4.ad
M8.1 Production request analogue output
M8.2 GND
IMPORTANT WARNINGS: to avoid unbalanced control, the earth
of the probes or external controllers must be connected to the unit
controller’s earth.
4.10 Final checks
The following conditions represent correct electrical connection:
1.
mains power to the humidifi er corresponds to the voltage shown on
the rating plate;
2. the fuses installed are suitable for the line and power voltage;
3.
a mains disconnect switch has been installed so as to be able to
disconnect power to the humidifi er;
4. the humidifi er has been correctly earthed;
5.
the power cable is fastened to the tear-proof cable clamp;
6.
terminals M2.7, M2.8 are jumpered or connected to an enabling
contact;
7.
if the humidifi er is controlled by an external controller, the signal
earth is electrically connected to the controller earth.