Condair HE2, Инструкция по установке и эксплуатации

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Temperature Sensor
The HE2 will operate when the temperature level indicated by the sensor is
above the setpoint in the software. When Stage Control is fitted, the unit will
operate in steps, i.e. wet a proportion of the evaporative module only, within
the proportional band set in the software to achieve close control.
In addition, the HE2 can be overridden by the panel switch, the interlock connections or the integrated “occu-
pancy” timer. The system will only operate when all the interlocks including the panel switch and intergrated
timer are closed and there is demand (if applicable), i.e. if any are open the system will be switched off. The
external signal and the sensor range can be selected with the following configurations:
0-10 Vdc (0% rH gives 0V, 100% rH gives 10V)
2-10 Vdc (0% rH gives 2V, 100% rH gives 10V)
4-20 mA (Select 2-10 Vdc with a 500ohm load resistor)
Step 2 - Select Stage Control (Optional)
Screen two allows the stage control option to be switched on or off. If Stage
Control is enabled, scrolling right will display the set points at which each
stage will switch on or off. The points at which sequential stages switch on
and off and the hysteresis, can be adjusted.
The “ HE2 MC3 Plus ” can control up to seven stages. A second page allows
setpoints for stages five, six, and seven to be adjusted.
Default Values:
Up to 4 Stage: Stage 2 - 20% Up to 7 Stage: Stage 2 - 20%
Stage 3 - 50% Stage 3 - 30%
Stage 4 - 80% Stage 4 - 40%
Stage 5 - 50%
Stage 6 - 60%
Stage 7 - 70%
Step 3 - Dilution Cycle
Screen three allows setting the parameters for the dilution cycle. The process
of evaporative humidification or cooling leads to a build up of dissolved solids
in the water tank. To control the level of dissolved solids in the tank, the HE2
will operate a Dilution Cycle at preset intervals of operation. During the
Dilution Cycle the HE2 will simultaneously open the inlet solenoid and motor-
ised drain valve for a preset duration to drain dissolved solids away and
replenish the tank with fresh water. The Dilution Cycle does not interrupt nor-
mal system operation. The Dilution Cycle frequency and duration is deter-
mined by the inlet water quality and operating capacity of the HE2 tank, and
should be set in accordance with the tables shown overleaf.
Refer to the commissioning section of the manual.
STAGE CONTROL
Enabled
STAGE CONTROL
___ Stage 2: 20%
<- _ Stage 3: 50% ->
___ Stage 4: 80% ___
STAGE CONTROL
___ Stage 5: 20%
<- _ Stage 6: 50% ->
___ Stage 7: 80% ___
STAGE CONTROL
___
<- Hysteresis 5%
___
DILUTION CYCLE
Interval: ____ 60 _ mins
Duration: ____ 10 _ mins
CONTROL PARAMETERS
___ Setpoint: __ 20 C
<- _ PropBand: ___ 10 C
___ Sensor: ____ 0-10 _ V
HE2 CONTROL
Temperature Sensor->