Grozone Control HT2 User manual

USER GUIDE
HT2
Digital Humidity & Temperature
Controller
with Photocell and Display
www.grozonecontrol.com

TABLE OF CONTENTS
SAFETY NOTICE........................................................................1
INSTALLATION GUIDE...............................................................2
OPERATION GUIDE……………………………………………………….……..3-4
CONFIGURATION…..…………………………………………………...…......5-6
TROUBLESHOOTING……………………………...……………...….….…….7-8
WARRANTY CUSTOMER SERVICE ……………………….… ….…..9-10

SAFETY NOTICE
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
DANGER
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,
CAREFULLY FOLLOW THESE INSTRUCTIONS.
To reduce the risk of electric shock, disconnect power to the 120V
electrical outlet before installing or removing the unit. When removing the
electrical wall plate, it may fall across plug pins or become displaced.
To reduce the risk of electric shock, this product has a grounding type plug
that has a third (grounding) pin. This plug will only fit into a grounding type
power outlet. If the plug does not fit into the outlet, contact a qualified electri-
cian to install the proper outlet. Do not change the plug in any way.
1

Plug both cable ends into the sensor and controller telephone-type
connectors.
Connect your controller into a 120V POWER OUTLET. The display
start-up sequence is as follows: bottom bar lights up, then goes up to top
bar and back down to bottom bar. Controller is then ready to work.
IT IS VERY IMPORTANT TO PLACE THE SENSOR
CONNECTOR DIRECTED TOWARD THE FLOOR, forming a
180° loop with the 25-ft cable already tied to the sensor top tab
(with included beaded tie).
To VIEW THE AMBIENT HUMIDITY level, rotate the knob counter
clockwise. Either DAY or NIGHT indicator will blink on left side of
knob to indicate actual light sensor status.
To VIEW THE AMBIENT TEMPERATURE level, rotate the knob
clockwise. Either DAY or NIGHT indicator will blink on right side of
knob to indicate actual light sensor status.
STEP 1 LOCATE AND CONNECT THE SENSOR,
APPLY POWER TO THE CONTROLLER.
1.
2.
3.
4.
5.
INSTALLATION GUIDE
2

STEP 2 SET VALUES
HOW DOES THE BAR DISPLAY WORK?
UPPER 15 BARS SHOW EITHER TEMPERATURE or
HUMIDITY VALUES.
The Humidity Scale is located on the left side of the display,
the Temperature Scale on the right side.
LOWER 5 BARS SHOW THE SELECTED CONTROL MODE.
Operating Mode
Night Temperature (*)
Day Temperature (*)
I
Low Temperature limit
(*) Both indicators must be lit
Night Humidity
Day Humidity
Click to select and
turn to set values
CONNECT YOUR CONTROLLER AND CLICK KNOB TO ENTER THE
6-STEP PROGRAMMING SEQUENCE:
Once you enter the Programming Sequence, LEDs are steady lit. LEDs
are blinking when you return to normal operation.
Step 1 STEP 2 STEP 3 STEP 4 STEP 5 STEP 6 EXIT
DAY
HUMIDITY
NIGHT
HUMIDITY
DAY
TEMPERATURE
NIGHT
TEMPERATURE
LOW TEMP
LIMIT
CONTROL
MODE (NOTE 1)
RETURN TO
CONTROL
Note 1 : only one bar lit among lower 5 bars.
OPERATION GUIDE
3

OPERATION GUIDE
These SETTINGS will ensure proper operation.
Operating
Modes DAY HUMIDITY NIGHT HUMIDITY DAY TEMPERA-
TURE
NIGHT
TEMPERA-
TURE
LOW
TEMP
LIMIT
(NOTE 2)
COOL Setting not
used Setting not used Day Setpoint: 52°F to 100°F
(right scale)
Night Setpoint:
52°F to 100°F
(right scale)
Setting not
used
DEHUMIDIFY Day Setpoint:
15% to 95%
(left scale)
Night Setpoint:
15% to 95%
(left scale)
Set value to 50°F
or above
(Note 2)
Set value to 50°F
or above
(Note 2)
Set value to
48°F or
above
(Note 2)
COOL &
DEHUMIDIFY Day Setpoint:
15% to 95%
(left scale)
Night Setpoint:
15% to 95%
(left scale)
Day Setpoint:
52°F to 100°F
(right scale)
Night Setpoint:
52°F to 100°F
(right scale)
Set value to
48°F or
above.
HUMIDIFY Day Setpoint:
15% to 95%
(left scale)
Night Setpoint:
15% to 95%
(left scale)
Setting not used Setting not used Setting not
used
HEAT Setting not
used Setting not used Day Setpoint: 52°F to 100°F
(right scale)
Night Setpoint:
52°F to 100°F
(right scale
Setting not
used
SETTINGS FOR EACH CONTROL MODE:
Note 2: The Low Temperature Limit will stop your dehumidifying equipment if the
temperature in the room cools down below this setting to avoid damaging your plants.
This limit is active ONLY when “DEHUMIDIFY” or “COOL & DEHUMIDIFY” CON-
TROL MODE is selected. Always set your DAY and NIGHT temperature settings NOT
MORE THAN 2°F above the Low Temp Limit.
4

CONFIGURATION
STEP 3 : CONNECT YOUR EQUIPMENT (120V 15Amps MAX)
Connect your equipment into the 120V outlet on the front of your controller, set your values and
control mode, then you’re set!
• FAN (to COOL, COOL & DEHUMIDIFY or DEHUMIDIFY)
• HUMIDIFIER (to HUMIDIFY)
• DEHUMIDIFIER (to DEHUMIDIFY)
• HEATER (to HEAT), 1000W heater recommended to maximize
product service life.
DURING THE NORMAL OPERATION, LED or BAR INDICATORS
WILL BLINK IN THESE SPECIAL CONDITIONS:
BLINKING INDICATORS (only one blinking at a time):
The blinking indicator tells you which of temperature or humidity is currently shown and which of
day or night period is being detected by the light sensor.
E.g. A Blinking Humidity Sun Icon stands for “Display currently shows Humidity value” and
“The controller currently works during a Day Period”.
BLINKING TEMPERATURE OR HUMIDITY BARS:
The temperature or humidity values are indicated by the upper 15 bars of display.
• Temperature reading:
TOP BAR is blinking when temperature is above 104°F / 40°C.
BOTTOM BAR (of 15) is blinking when temperature is below 48°F / 9°C. Otherwise,
temperature is within these 2 limits.
• Humidity reading: BOTTOM BAR is blinking when humidity is below 10%. Humidity
above 100% is impossible, TOP BAR will never blink.
• Temp sensor failure: both TEMPERATURE TOP and BOTTOM BARS are blinking when
the temp sensor reading is invalid. The Output will be held OFF if the control mode is using
this sensor. Unit may need to be repaired.
• Humidity sensor failure: both HUMIDITY TOP and BOTTOM BARS are blinking when
the humidity sensor reading is invalid. The Output will be held OFF if the control mode is
using this sensor. Unit may need to be repaired.
5

CONFIGURATION
BLINKING CONTROL MODE BAR:
The selected CONTROL MODE is indicated by one of the lower 5 bars of display.
• Output is OFF (no voltage on output): Control Mode bar is STEADY LIT, not blinking.
• Output is ON (120V on output): Control Mode bar IS BLINKING.
Exemple 1
DAY Humidity Indicator is blinking.
Display bar “20” is lit (left scale).
DEHUMIDIFY Bar is lit, but not blinking.
Day Humidify Setpoint is 40%.
Exemple 2
NIGHT TEMPERATURE Indicator is blinking.
Display bar “68” AND “72” are lit (right scale).
HEAT Bar is blinking.
Night temperature Setpoint is 75°C .
———————————————
_________
_________
_________
_________
——————————————
_________ _________
_________
_________
The bargraph display
shows a HUMIDITY
level of 20%.
The bargraph display
shows a TEMPERA-
TURE level of 70°F
40
30
20
10
76
72
68
64
DAY is detected and the Output is currently
NOTACTIVATED (120V) because humidity
level is at 20%.
NIGHT is detected and the Output is
ACTIVATED because the temperature
level is only 70°C.
DAYAND NIGHT DETECTION
The light sensor detects a NIGHT condition when it senses darkness for a minimum period of 8 seconds.
The light sensor detects a DAY condition when it senses light for a minimum period of 8 seconds.
ELECTRONIC BALLAST IN THE SURRONDINGS
Electronic ballasts are generating electronic noises (EMI) that are likely to be picked up by the sensor
cable and alter the reading of the temperature and humidity values. The HT2 incorporates built-in
filters that reduce the effect of EMI, however, we recommend:
1- to place the sensor and cable as far as possible of the ballast, the bulb and the cable between them,
2- to connect the controller on a different 120V outlet / circuit than the one used for the ballast.
6

TROUBLESHOOTING GUIDE
1– BEFORE YOU START
***** CAUTION: READ AND FOLLOW THESE INSTRUCTIONS BEFORE STARTING THE TEST.
• LIGHTING: Perform this test in a room with enough light for the controller to detect a DAY
condition. A dark location should be avoided.
• You will need a lamp or night light to perform the test.
• Perform the test in a room temperature around 25°C / 78°F
2– TEST
ST
EP ITEM TEST DESCRIPTION EXPECTED RESULTS
1 LEDs check Plug in the controller into an
electrical outlet The LEDs will light ON from top to bottom and bottom to top, one
LED at a time.
2A Display & knob check -Push the knob once. The unit enters in DAY HUMID-
ITY SET POINT and the HUMID-
ITY DAYTIME LED turns ON
(sun on the left side).
2B -Turn knob clockwise to
raise set point to 95%. The display bars will light up from the bottom and up to the top, no
more than 2 bars simultaneously.
2C - Turn knob counter clock-
wise to lower set point to
15%.
The display bars will light up from
the top and down to the bottom, no
more than 2 bars simultaneously.
2D - Push the knob once. HUMIDITY NIGHTIME LED
turns ON.
2E - Push once and turn the
knob counter clockwise to
set the setpoint to 60°F.
TEMPERATURE DAYTIME LED
turns ON.
2F - Push once and turn the
knob counter clockwise to
set the setpoint to 60°F.
TEMPERATURE NIGHTIME
LED turns ON
2G - Push the knob once. Set to
56°F. Both TEMPERATURE DAY & NIGHT LEDs turn ON
2H -Push the knob once. All The LEDs and display bars
turn OFF. The CONTROL MODE
LED turns ON
7

(*) STEP 2G
Both indicators must be lit at
the same tome.
STEP 2D
STEP 2A
STEP 2H
STEP 2F (*)
STEP 2E (*)
TROUBLESHOOTING GUIDE
3 Output check -Turn knob in both directions to
change control mode.
-Select “Cool” control mode.
-Push the knob once
The LEDs will turn on one at a time in the
CONTROL MODE section.
The Output will turn on. (Test with a night-
light in the output)
The unit is back to normal operation
4A Sensor check -Disconnect the sensor from the
controller.
- Reconnect the sensor to the con-
troller
The top and bottom display bars will blink.
The unit is back to normal operation and
both bars turn off.
4B - Blow into the sensor The display bars will go up to indicate that
the temperature and humidity levels are go-
ing up.
For Step 5, you will need a reference thermometer or hygrometer to validate the sensors readings
(values)
5A Photocell and
room condi-
tion check
- Turn knob clockwise. The DAYTIME TEMPERATURE LED
blinks and the temperature level should read
between 64°F and 84°F (Room temperature)
5B - Turn knob counter clockwise. The DAYTIME HUMIDITY LED blinks
and the humidity level should read between
30 and 60% (humidity level in the room).
5C Cover the photocell for at least 8
to 10 seconds.
- Turn the knob clockwise.
- Turn the knob counter clock-
wise.
The NIGHTIME TEMPERATURE LED
blinks and the temperature level should read
between 64°F and 84°F (Room Tempera-
ture).
The NIGHTIME HUMIDITY LED blinks
and the humidity level should read between
30 and 60% (humidity level in the room).
END OF TEST
8