Sentinel CHHC-1 Instruction Manual
Troubleshooting & Specs CHHC-1
Amps / Volts requirements 15 amps @ 120 volts
Min / Max operating temperature 32 to 120° F
Min / Max operating Humidity 0-99% RH
Temperature Measurement range 32 to 122° F
Temperature Accuracy +/- 1.8° F
Humidity Measurement range 10 to 95% rH
Humidity Accuracy +/- 3% rH
Light Sensor sensitivity Adjustable
CO2 Measurement range 0-2500 PPM
CO2 Accuracy +/- 75 PPM
CO2 sensor warm-up time Less than 10 minutes
Computer Interface *Optional RS 232 / 9-pin D-sub
Weight / Dimensions 5lbs / 8” x 6.5” x 3.1”
Life Expectancy > 10 years
Remote sensor cable length 16ft (can be up to 100’)
Sentinel products are distributed by:
GPS / Global Product Solutions LLC.
www.growgps.com
All Sentinel Timers and
Controllers offer a
3-year warranty.
Ask your retailer for
details.
Printed in China
Instruction Manual
CHHC-1
Cooling - Heating - Humidity - CO2
Controller
Sentinel has made controlling temperature, humidity and CO
2
PPM levels easy and affordable. The CHHC-1 combines an
accurate digital temperature & humidity sensor with a state of
the art NDIR CO
2
sensor in one reliable and easy to use
controller. By controlling supplemental CO
2
with PPM
(part-per-million) accuracy, plant growth can be accelerated by
as much as 30%.
The CHHC-1 has been designed
to maintain a specific CO
2
level.
The user can select “Fuzzy-logic”
mode when using compressed
CO2 or switch the mode to On /
Off when using a gas-fired CO2
generator.
Increasing the CO
2
from normal atmospheric level of 375
PPM to between 1250 PPM by using either compressed CO
2
or operating a combustible gas CO
2
generator has never been
easier. The CHHC-1 measures the carbon dioxide level and
automatically turns ON and OFF the CO2 device to accurately
keep the CO2 level at the desired level.
The combination remote sensor assembly is also a great
feature that allows the user to place the sensor up to 16 ft from
the controller. The combo-probe contains a highly accurate
temperature, humidity, light and CO2 sensor. The sensors are
enclosed in a shielded body and use high-quality shielded
wiring to resist electronic noise from electronic ballasts or
other EMI / EFI noise sources.
CONTENTS
A quick look at the CHHC-1
Installation of the CHHC-1
Understanding Interlocks
Operating the CHHC-1
Calibrating the CHHC-1
CO2 control Modes
Photocell sensitivity
Change display F to C
Using with electronic ballasts
Connection Examples
Troubleshooting & Specs
Troubleshooting & Specs
Problem: The unit does not power up at all.
Check and reset the circuit breaker on the bottom of the unit If the
problem continues, reduce the number of devices connected to the
unit or use a PXM to control larger amperage devices.
Problem: The CO2 outlet does not turn on.
1) There are different modes that can be selected. Refer to Understanding Interlocks to fully see how the modes affect the CO2
function.
2) The Photocell inside the combination probe may affect the CO2
function. Ensure the photocell is receiving enough light to activate it. (Green “Daytime” LED will be ON) The sensitivity of
the photocell can also be adjusted if required.
Problem: The CO2 reading does not seem to be accurate.
A quick check of the calibration of the CO2 sensor can be
performed. Refer to Calibrating CO2 to recalibrate the sensor.
Problem: The unit has scrolling 8s for more than 10 minutes.
Turn the power switch Off for 5 seconds, then turn the switch On.
After 10 minutes, the unit should complete the start-up and begin to
display conditions of the area. If it does not, contact the factory.
Problem: The device I have connected to the Temperature or
Humidity receptacle, cycles On & Off too much.
The dead-bands can be increased to reduce cycling of the device.
Refer to the Operating the CHHC-1 section.
Problem: I would like to return the unit to is default settings.
The unit can be returned to it’s original factory setpoints. Pressing
and holding the Enter / Reset
and Down pushbuttons for 2 seconds
will change the display to read f.Set. Pressing Enter / Reset
again
will return the unit to it’s factory default settings.
Problem: The digital display is frozen or changing rapidly.
Certain devices such as Electronic (Digital) Ballasts and Ozone
generators produce a huge amount of electronic “noise”. If you are
operating these other devices, locate them as far away from the
controller as possible.
Problem: The display reads Err SEn
The remote combination probe has been disconnected or is not
communicating with the unit. Check the cable and the remote sensor. If resetting (OFF / ON) the power does not help, contact the factory. (See below also)
Connection examples
OR
OR
OR
Dehumidifier or a humidifier can
be connected to the Humidity
Device receptacle
For indoor growing, Cooling
devices such as ventilation
fans or air-conditioners
connect to the Cooling
Device receptacle
Heaters for cooler climate
greenhouses can be connected to
the Heat Device receptacle.
Connect your 120 volt
compressed CO2 solenoid /
regulator assembly to the
CO2 receptacle.
Hand sized remote combination
probe senses temperature,
humidity, CO2 PPM and light
levels all in one small enclosure.
A quick look at the CHHC-1…
Heavy-duty Power
cables, shielded
probe cable
Re-settable
circuit breaker
Attractive highimpact injection
molded enclosure
LED displays temperature
humidity & CO2 levels
15 button keypad
to change settings
Humidity device
connects here
CO2 device
connects here
Combination remote
probe, Temp, Humid,
CO2 & light
Cooling device
connects here
Heating device
connects here
(8) LEDs allow
user to quickly see
Min / Max
recorded values
RS232 computer
connection
* (Optional)
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