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SEU (Sensor Unit)
RDU (Remote Unit)
A. LCD display
B. Buzzer
C Green LED (Power indication)
D. Red 1 LED( AL1 )
Red 2 LED( AL2
E.
)
F. Yellow LEDFaultindication)
G. Reset Button
H. Enter Button
I. Mode Button
CO2 Relay output (red& white: NO,blue& white:
J.
NC)
K. O2 Relay output (red& white: NO,blue& white: NC)
L. Analog output
(red&white:CO2,blue &white:O2)
M. Communication Cable to RDU
N. Power Supply
O. CO2 entry
P. O2 entry
Q. Green LED (Power indication)
R. Red 1 LED (AL1)
S. Red 2 LED (AL2)
T. Yellow LED (Fault indication)
U. LCD display
V. Mode Button
W. Enter Button
X. Buzzer
Y. RJ45 Plug for next RDU (Output)
RJ45 Plug
Z.
for SEU (Input)
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Table of Contents
Related Manuals for ZyAura ZGA21
Summary of Contents for ZyAura ZGA21
- Page 1 SEU (Sensor Unit) A. LCD display B. Buzzer C Green LED (Power indication) D. Red 1 LED( AL1 ) Red 2 LED( AL2 F. Yellow LEDFaultindication) G. Reset Button H. Enter Button I. Mode Button CO2 Relay output (red& white: NO,blue& white: K.
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Page 2: General Introduction
General Introduction Indoor Air Quality (IAQ) is measure for the quality of air in interiors, the comfortable indoor environmental quality can make people feel fresh, work efficiency and good for the health. The CO2 concentration is the important factor of good indoor air quality. People breath in oxygen and breath out CO2, nowadays people often close the windows to avoid noise and enjoy the comfort living and working environment provided by air-conditioning systems, which results in the fact that the indoor concentration of CO2 is far higher than outdoor average. - Page 3 LCD Display Symbol Symbol Meaning Description CO2 Concentration ppm (Parts Per ambient CO2 concentration Million) O2 Concentration ambient O2 concentration Alarm alarm icon Test communications between the SEU and Diagnose The relay will be triggered when CO2 concentration exceeds the first alarm level or O2 CO2/O2 First Alarm level concentration drops the first alarm level, the Red 1 LED will flash, and buzzer will sound.
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Page 4: Safety Notes
(This function is latch design. Based on DIN6653-2). Unless the ZGa21 is restarted, by means of reset button of ZGa21 or unplug the AC adapter and reconnected it. The green LED will light continuously when the power is normally supplied. -
Page 5: Installation Instruction
RDU. Communication is now ready between the SEU and RDU. The ZGa21 CO2 and O2 Monitor has two relay output: one is for CO2 and the other is for O2. The relay cable is pre-wired to SEU. The relay can control a fan or blower to ventilate the monitored space when necessary and the relay will be triggered when the CO2 concentration exceeds the first alarm level or O2 concentration drops the first alarm level. -
Page 6: Customizing Settings
Mount the plug lock Customizing Settings When power has been connected, the SEU and RDU will begin to monitor the CO2 & O2 concentration. In order to the get the timely alarm safety information and meet the personal requirements, it is advisable to set up the customizing parameter when necessary. - Page 7 Setting the O2 First Alarm parameter Press Mode until the “AL1” icon flashes Press Enter, the “AL1” icon shows on LCD Press Mode to go through “18%,18.5%,19%,19.5%,20%” alarm level Press Enter again to save the setting after selection Setting the O2 Second Alarm parameter Press Mode until the “AL2”...
- Page 8 Using the O2 CALI function The O2 CALI function is as same as CO2’s. *Note: When do the calibration, When do the “ZEr” Calibration, please enter through N2. When do the “SPA” Calibration, please enter through 21% O2 gas. Before doing “ZEr”/” SPA” calibration, it will take about 5 min to enter through O2 to stabilize.
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