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While the Sentinel CPPM-4i has been designed with advanced communication and
control componentry for ideal operation using the proprietary S.I.C.E. system, the
CPPM-4i can work with all current and previous Sentinel brand CO2 generators as
well as other manufacturer offerings. And the best part is you can always upgrade
to a Sentinel ICG series S.I.C.E. generator in the future!
1. Follow initial installation instructions for your Sentinel CPPM-4i and for your
Sentinel VCG series generator or other brand CO2 generator.
2. Set desired CO2 enrichment level with the “Set CO2 button”. Make sure to press
“Enter” after the desired level is set.
3. Ensure the CPPM-4i is set to CO2 Generator Mode. This is accomplished by pressing
and holding the “Enter” button for 5 seconds. Using the Up/Down buttons put the
CPPM-4i in Generator mode. Press the ENTER button to confirm your selection.
4. Plug the power supply for the CO2 generator into the CO2 Device receptacle.
5. If you notice the CO2 levels are exceeding your set point, use a lower power setting
on the CO2 generator.
6. If you notice the CO2 generator cycling on and off too frequently, try increasing the
hysteresis using the “CO2 Hysteresis” button.
The Sentinel CPPM-4i has been designed with the most advanced “True Fuzzy Logic”
programming and componentry for optimal use with CO2 regulator / bottled CO2
pairings. While many CO2 brands claim to use fuzzy logic, they are really using a
less advance PID control loop design. Sentinel “True Fuzzy Logic” ensures the most
precise control and enrichment levels available to bottled CO2 regulator users.
For best results, Sentinel recommends using the highest
quality Sentinel CO2-REG components.
1. Follow initial installation instructions for Sentinel CPPM-4i and Sentinel CO2-REG
or other brand CO2 regulator.
2. Set desired CO2 enrichment level with the “Set CO2 button”. Make sure to press
“Enter” after the desired level is set.
3. Make sure the CPPM-4i is set to “True Fuzzy Logic” mode. This is accomplished by
pressing and holding the “Enter” button for 5 seconds. Using the Up/Down buttons,
put the CPPM-4i in Fuzzy Logic mode. Press the enter button to confirm your selection.
4. Plug the power supply for the CO2 regulator into the CO2 Device receptacle.
5. If you notice the CO2 levels are exceeding your set point, use a lower output
flowrate setting on the CO2 regulator.
Sentinel Standard CO2 Generator Function
Sentinel “True Fuzzy Logic” CO2 Operation for bottled CO2
Recalibration of the CO2 sensor:
Recalibration of CO2 sensor is required at 12 month intervals, after the probe being
jarred/sustaining rough handling, or other times if CO2 levels do not appear to be
reading accurately. Recalibration of the CO2 sensor is a fairly simple process,
provided that basic protocols are followed:
1. Move the remote sensor to an area outside of the garden or greenhouse that is in
fresh air - preferably outdoors. The sensor must be away from people and other
CO2 generation sources. Protect unit from direct sunlight.
2. Turn the power on to the CPPM-4i. Allow the unit to operate undisturbed for a
minimum of 30 minutes with a time of 1+ hours being optimal.
3. Press the CO2 Calibrate button on the main controller. Set the desired ambient
(baseline) CO2 levels using the UP/DOWN arrows. Normally, this will be 400ppm.
In larger cities or more congested areas, settings up to 450ppm may be used.
Press the ENTER button to confirm your selection.
4. Leave the area and keep people or other CO2 generation sources away from the
unit for a minimum of 15 minutes.
5. Return the CPPM-4i to your garden or greenhouse.
Annual Battery Replacement:
For continued optimal performance, it is recommended that the battery for the CPPM-4i
be replaced on an annual basis. Use of a high quality CR 2025 button cell battery is
required. Please follow proper local disposal procedures for your discarded battery.
GENERAL MAINTENANCE PROCEDURES
For optimal continued operation of your CPPM-4i,
several general maintenance procedures are required on a periodic basis.
THANK YOU
for choosing Sentinel!
In a world of compromises, we never!
™
• • • • • • •
For installation help, tips and tricks visit our YouTube channel
www.youtube.com/SentinelGPS