Sentinel CHHC-1 Instruction Manual - page 4
Installing the CHHC-1
1) Locate a suitable location for the controller.
2) First secure the provided bracket to the wall. Next snap the controller
into place and tighten the (2) thumb-screws top & bottom.
3) Place the remote probe assembly where it can accurately sense the
environmental conditions. The sensor is NOT water proof. Do not locate
the sensor where it may get sprayed with water.
4) Hang the remote sensor probe at plant height for best accuracy. The
combination sensor is fragile and should be handled with care.
5) The controller requires a 120 volt, 15-amp power supply. Plug the
power cable into a standard Nema 5-15 wall outlet.
6) The devices that will be controlled must be 120 volt & 15-amps or less.
If larger electrical loads need to be controlled, use 1 or more PXMs to ex-
pand the power handling capability of the CHHC-1.
7) If you are using a cooling and heating device, connect the device’s
power cable into the receptacles marked Cooling and Heat.
8) If you are using a separate humidifier or dehumidifier, connect it to the
receptacle labeled Humidity Device.
9) Connect the CO2 device to the receptacle marked CO2 Device. You
can operate a CO2 generator or a compressed CO2 regulator.
10) The light sensor inside the remote probe needs to be exposed to light.
The sensitivity of the photocell is adjustable. (See Photocell sensitivity)
11) Turn the power switch to the ON position and the unit will begin to
“warm-up”. While warming up, the display will show a series of the number
8 moving across the display. Warm-up takes about 4 minutes.
NOTE: In order for the CHHC-1 to work correctly for YOUR
application, you may need to first check and change some factory set-
points. Refer to Operating the CHHC-1 section of this manual.
NOTE: If you are trying to connect large power hungry devices like air
conditioners or dehumidifiers, you may have to use some Power Expan-
sion Modules to provide the ability to switch higher amperage devices.
Photocell sensitivity
If necessary, the sensitivity of the photocell can be adjusted. The
factory setting normally activates “daytime” with very low light
levels required. If you need to change the sensitivity of the photo-
cell, follow the procedure below.
Pressing and hold the Enter / Reset and UP button for 2 seconds will
bring up the current photocell setpoint. To increase the sensitivity (turn
ON Daytime mode with less light), increase the number setting.
To decrease the sensitivity (require more light to activate Daytime mode),
lower the number setting.
Changing display from F to C
The CHHC-1 can display the temperature in either in F or C. To
change the temperature display, press and hold the Up and Down
pushbuttons for 3 seconds.
Using with electronic (digital) ballasts
Warning!!!
Some electronic devices such as Electronic (Digital) HID ballasts and Ozone
generators produce large amounts of electronic noise, which can affect other
equipment. The Sentinel line of controllers and timers have been “hardened” by
using shielded cable and shielded enclosures however… some EBs do not have
proper shielding. For best results it is highly recommended to position your
controller at least 8 ft away from any EBs (Electronic Ballasts). It is also a good
idea to route the cables going from the EB to the HID lamp away from the
controller and the remote temperature probe cable attached
8 ft
minimum
Keep Electronic ballast at least 8 ft away from other electronic equipment.