Neptronic SAR24GH User manual

SAR IAQ Room Sensors
Specification and Installation Instructions
SAR-170524-ESA.docx Page | 1
Models
SAR24GH
with humidity and CO2sensor
SAR24GV
with CO2and VOC sensor
Features
CO2sensor feedback output (AO1)
CO2warning and alarm level outputs (BO1 and BO2)
Humidity or VOC sensor feedback output (AO2)
Input voltage 24Vac or 24Vdc
SAR24GH/SAR24GV
Technical Specifications
Description SAR24GH/SAR24GV
Humidity Sensor (SAR24GH)
Sensor range 5 to 95% RH
Display resolution 0.1% RH
CO2Sensor (SAR24GH and SAR24GV)
Operating principle Self-calibrating, Non-Dispersive Infrared (NDIR)
Sensor range 400 to 2000 ppm
Accuracy ±30 ppm ±3% of reading (Accuracy is defined after minimum 3 weeks of continuous operation)
Response time 2 minutes by 90%
VOC Sensor (SAR24GV)
Operating principle Self-calibrating, Non-Dispersive Infrared (NDIR)
Sensor range 0-1000 ppb isobutylene equivalent tVOCs
Response time < 5 seconds for tVOC
Start up time 15 minutes
Other
Outputs 2 Binary outputs (BO1 and BO2), dry contracts 24Vac, 1A max 3A in-rush
2 Analog outputs (0 to 10Vdc)
Electrical connection 0.8 mm
2
[18 AWG] minimum
Operating temperature 0ºC to 50ºC [32ºF to 122ºF]
Storage temperature -30ºC to 50ºC [-22ºF to 122ºF]
Relative humidity 5 to 95 % non-condensing
Enclosure protection IP 30 (EN 60529)
Weight 80 g. [0.2 lb]
Dimensions A = 2.85” | 73mm
B = 4.85” | 123mm
C = 1.00” | 24mm
D = 2.36” | 60mm
E = 3.27” | 83mm
A
B
C
D
E

SAR IAQ Room Sensors
Specification and Installation Instructions
www.neptronic.com Page | 2
Wiring
We strongly recommend that all controllers be wired to a separate grounded transformer and that transformer shall service only
these products. This precaution will prevent interference with, and possible damage to incompatible equipment.
Terminal Description Details
1 COM (-) Common
2 24Vac/24Vdc (+) 24Vac
3 COM for BO1 (ext 24V) If JP1 is set to A+B
4 Binary Output 1 (BO1)
CO2warning level
ON @ >1000ppm
OFF @ <800ppm
5 COM for BO2 (ext 24V) If JP2 is set to A+B
6 Binary Output 2 (BO2)
CO2alarm level
ON @ >1200ppm
OFF @ <1000ppm
7 COM
8 Not Used
9 COM
10 Not Used
11 Analog Output 1 (AO1) CO2feedback
0 to 10Vdc = 0 to 2,000ppm
12 COM
13 Analog Output 2 (AO2)
Humidity or VOC feedback
0 to 10Vdc = 0 to 100%RH (SAR24GH)
0 to 10Vdc = 0 to 1,000ppb (SAR24GV)
14 Not Used
15 Not Used
Jumpers
Jumpers Description
JP1 BO1 Signal Selection
A&B = External: BO1 uses external 24 Vac at pin 3 (different than thermostat)
B&C = Internal: BO1 uses internal 24 Vac (same as thermostat)
JP2 BO2 Signal Selection
A&B = External: BO2 uses external 24 Vac at pin 5 (different than thermostat)
B&C = Internal: BO2 uses internal 24 Vac (same as thermostat)
Mounting Instructions
CAUTION: Remove power to avoid a risk of malfunction.
A. Remove the captive screw that’s holding the base and the front cover of the unit together.
B. Lift the front cover of the unit to separate it from the base.
C. Pull all wires through the holes in the base.
D. Secure the base to the wall using wall anchors and screws (supplied). Make the appropriate connections.
E. Mount the control module on the base and secure using the screw.
TB1
15
14
13
12
10
9
8
7
6
5
4
3
1
2
11
ABC ABC
JP1
VOC sensor
(select models)
CO2sensor
(select models)
BO signal
selector jumpers
(JP1 and JP2)
Humidity sensor
(select models)
Avoid touching the VOC and
CO2 sensors as this may
cause incorrect readings
JP2
A
E
D
C
B