Elitech DHC-100+ User manual

DHC-100+ Instructions
Important
• When wiring the temperature sensor please make sure that the coloured wires are wired up to the
correct terminals as follows: Red (+) to 4, Black (-) to 5 and ellow (V) to 6.
• Do not over load the device’s output Relay. Its maximum values are: 22 v, 1 A, 22 watts.
• Care must always be taken when working with electricity.
Specifications
Humidity measuring range: 1% to 99%RH Product Size: 34.5 X 75 X 85.5mm
Humidity controlling range: 1 % to 99%RH Installing Hole/Panel Cut Out Size: 29 X 7 mm
Power supply: 22 V AC ± 1 %/-15% Accuracy: ±5%RH (1 %RH to 95%RH at 25c)
Relay Output Capacity: 1 A, 22 V AC MAX Sensor operation temperature range: -3 c to 8 c
Operating Environment Temperature: c-6 c Sensor Extended Stability: .5%RH/yr
Operating Relative humidity 2 % to 85% Power consumption: <3W
Resolution: 1%RH Front Panel Protection: IP54
Sensor Size (Approx): Cable Length 2 metre, Sensor Head 4.6 x 2.7 x 1.3 cm
Overview
The DHC-1 + works as either a humidifying or dehumidifying controller depending on how it is setup.
The unit will display the current humidity unless the user has entered one of the Parameter Menus to change
any of the settings.
The following describes the diagram of the front panel pictured above.
• Set Indicator: Will light when the user has entered one of the Parameter Menus.
• Out indicator: Flashing = Time Delay is in force. Continuously Light = Output Relay is operating.
• Increase & Decrease Indicator: This indicates which mode the unit is operating in. If the Decrease
Indicator is lit then the unit is working as a Dehumidify Unit or if the Increase Indicator is lit it would be
operating as a Humidifying unit.
Wiring
Please use the following wiring diagram to wire your devices for items that require 22 v to 24 v.
IT’S VER IMPORTANT THAT THE SENSOR IS WIRED PROPERL USING THE DIAGRAM BELOW
OTHERWISE THIS WILL DAMAGE THE SENSOR. Red (+) to 4, Black (-) to 5 and ellow (V) to 6.
Please note that the Output Relay (1 & 2) only requires to cut the live (hot) wire when turning the connected
devices on and off. The Output Relay does not require a Neutral (Cold) wire.
When the Output Relay is not activated the terminals 2 & 3 are connected so that terminal no. 3 is live instead.
If an earth is required this should be wired up separately perhaps via a terminal block.

Operating Instructions
Parameter Overview
The 2 main settings on the unit are the Set Point and the Difference Parameters.
Set Point: indicates what midway humidity level the unit is to achieve.
Difference: The point away from the Set Point that the Output Relay should start or stop operating.
The difference value is the top and bottom range that you wish the unit to try and maintain. Using the following
settings of Set Point = 5 % and Difference = 5% the following happens.
Humidifying Mode: the relay turns on when at or below 5 % (Set Point) and turns off when at or above 55%
Dehumidify Mode: the relay turns on when at or above 5 % (Set Point) and turns off when at or below 45%
The main settings can be checked at any time: In normal mode, press the UP key to display Humidity Set
Point or press the DOWN key to display the Difference setting.
Parameter Menu and Settings
Parameter Settings can be changed in one of three different Menus. The User and Admin Menus are used to
adjust the main parameter settings marked with an F.
• User Menu: Press and hold the SET key for about 3 seconds until the display changes. This allows
changes to the Parameters F1 & F2 only. Helpful if you are only making minor adjustments.
• Admin Menu: Press and hold SET and UP keys together for about 3 seconds until the display
changes. This allows changes to the Parameters F1 to F8.
The Sensor Menu is only used to coordinate the sensor attributes with the DHC-1 + unit. These settings are
marked as B1, B2, K1 & K2. Each DHC-1 + unit is pre set with the sensor that has been attached to it as
each sensors attributes are individual to that sensor. This makes for a more accurate reading and allows users
to replace the sensor with another compatible type in the future but still allow the DHC-1 + to remain
accurate.
• Sensor Menu: Press and hold the set key for 1 seconds This changes the Parameters B1 to K2
Code Description Range Default
F1 Set Point 1 % to 99% 5 %
F2 Difference 1 to 5 % 5%
F3 Time delay to 99 min minute
F4 Alarm to 5 % %
F5 Operate ON When Error to 99 min 1 minute
F6 Operate OFF When Error to 99 min 5 minute
F7 Calibration + or – 15% %
= Humidify
F8 Mode Selection 1= Dehumidify
B1
B2 Zero Offset 5 - 9999
K1
K2 Slope 2 - 3999
Pre-set

How to amend a Parameter Setting
When you enter one of the Menus as described above you will be presented with the first setting to be
updated. By pressing the UP and DOWN keys you can scroll through each one of the Parameter Setting
Codes.
Once you have selected the parameter you wish to change press the SET key and the display will now show
the setting for that parameter. Press the UP and DOWN keys to select the new setting then press RST key to
accept the new setting.
Once you have updated the new settings you need to save them by pressing and holding the RST key for
about 3 seconds until the display changes to display the current humidity reading. Please note that if you do
not press any key for 3 seconds or more then any updates to any of the parameters will not be saved.
Functions Explained (F1 to F8)
F1: Set Point: Indicates what midway humidity level the unit is to achieve.
F2: Difference: The point away from the Set Point that the Output Relay should start or stop operating
F3: Time Delay: The delay in minutes when the Output Relay will switch on after being requested to come on.
For example if it was set to “3” Minutes then as soon as the Output Relay is requested to be switched on it will
wait “3” minutes before coming on. The working indictor will flash on and off to indicate that the relay is due to
come on but is waiting. The light will become solid when the time delay is finished and the relay switches on.
This is a safety feature to protect the device that is connected to the unit from continual switching and causing
damage. If it’s set to “ ” then there will be no time delay.
F4: Alarm: This feature has been designed to sound an audible alarm and flash the display screen when the
area you are controlling is out with the desired humidity level. For example if it is set to 1 % then the alarm will
activate when the area you are controlling goes above or below the Set Point by 1 %. To silence the alarm
sound, press any key. If set to “ ” the Alarm function will be cancelled.
F5 & F6: Operate When Error
This function has been designed as a fail safe mechanism to allow the unit to operate even during a situation
where a sensor error has occurred. It is extremely unlikely that a sensor error would suddenly occur while
using the unit in a normal way, however, external problems such as the sensor wire being cut or damaged
accidentally would cause the unit to error. F5 & F6 will allow the user to program a situation where by the relay
will come on for the number of minutes set in F5 then turn off for the number of minutes set in F6 and
repeating this until the error is resolved. For example setting F5 to 1 and F6 to 5 means that during a sensor
error the relay will switch on for 1 minute (F5) then will turn off 5 minutes (F6).
F7: Calibration: This setting will change the value that the sensor is reading by the number of %HR that has
been selected on this setting. The value can be set from -15% to +15% of the actual reading.
F8: Mode Selection: This setting instructs the unit to operate either as a Humidifying or Dehumidifying
controller

Sensor Attributes Explained (B1 to K2)
Each DHC-1 + unit is pre set with the sensor that has been attached to it as each sensors attributes are
individual to that sensor. This makes for a more accurate reading and allows users to replace the sensor with
another compatible type in the future but still allows the DHC-1 + to remain accurate. It’s not advisable to
change these to anything other than what the sensors attributes are. Each sensor has been tested and a
sticker with its own individual attributes has been attached to the back of each sensor.
Each attribute has been divided into 2 parts.
• The first 2 digits on the Zero offset attribute = B1
• The second 2 digits on the Zero offset attribute = B2
• The first 2 digits on the Slope attribute = K1
• The second 2 digits on the Slope attribute = K2
Addition Functions
Keyboard lock
This function will lock the keypad to stop or prevent any updating of the parameters. This can also assist you
when the unit will be in an area that is unsupervised /open to the public. In normal mode, press both the UP
and DOWN keys for about 3 seconds until the display shows “C1”, the keypad is now locked. To unlock it
again press and hold the UP and DOWN keys again until “C ” is displayed.
Error Messages
The following error message will show to indicate that there is a fault.
EE: Sensor cannot be detected.
Current Reading Flashing: The sensor is above or below the Set Point (F1) by the % set in the Alarm (F4).
Er: Data Saving Error.
HH: Humidity is our of range for displaying
Additional Information
Please avoid using the sensor in dusty environments. Do not submerge the sensor in water or liquid. Using
this is area with strong electromagnetic fields can distort the true readings.