Honeywell Stud Sensor C7400S User Manual

C7400S Enthalpy Sylk Bus Sensor  
INSTALLATION INSTRUCTIONS  
Environmental  
Operating Temperature range: -40 to 150 °F (-40 to 65 °C)  
Storage Temperature range: -40 to 150 °F (-40 to 65 °C)  
Shipping Temperature range: -40 to 150 °F (-40 to 65 °C)  
Operating Relative Humidity range: 5% to 95% RH non-  
condensing  
Temperature and Humidity, C7400S:  
Temperature sensing range: -40 to 150 °F (-40 to 65 °C)  
Humidity sensing range: 0 to 100% RH with 5% accuracy.  
PRODUCT DESCRIPTION  
Dimensions (See Fig. 1):  
Height: 0.8 inches (20.5 mm)  
Width: 2.17 inches (55 mm)  
Length: 4.25 inches (108 mm)  
The C7400S Sylk Bus sensor is a combination temperature  
and humidity sensor, which is intended to be used in  
commercial roof top units for sensing air. The sensor is  
powered by and communicates on the Sylk Bus. The C7400S  
Weight: 0.58 lb. (0.265 kg)  
communicates temperature and humidity separately digitally  
on the Sylk Bus Communication Protocol.  
Listing Agency Approvals:  
EN61000-6-3,EN61000-3-2;EN61000-3-3;EN61000-6-1;  
EN60730-1 Annex H.23 (emissions)  
Annex H.26 (immunity)  
CE Mark FOR EU  
A separate controller such as the JADE™ Economizer  
System (Model W7220) provides power and communications  
on the Sylk Bus for the C7400S Sylk Bus sensor.  
SPECIFICATIONS  
51/64 (21)  
Electrical  
4-1/4 (108)  
2-3/4 (70)  
Supply Voltage: 7 to 21 Vdc  
Power Consumption: 5 mA  
Output Rating: 75 ohm load switched at 9600 Baud  
Wiring: Sylk Bus: 2-wire (18 to 22 AWG)  
2-1/64 (55)  
M32331  
Fig. 1. Dimensions in inches and (mm) showing mounting  
holes.  
62-0332-03  
E4436  
 
 
C7400S ENTHALPY SYLK BUS SENSOR  
WIRING  
a
Table 1. SYLK Bus Sensor Wiring Terminations .  
Terminal  
All wiring must comply with applicable electrical codes and  
ordinances, or as specified on installation wiring diagrams.  
Nbr  
Label  
Type  
Description  
1
2
S-BUS SYLK Bus Sylk Bus Communications  
(Sensor Bus)  
WARNING  
Can cause severe injury, death or property  
damage.  
Disconnect power supply before beginning wiring, or  
making wiring connections, to prevent electrical shock  
or equipment damage.  
S-BUS SYLK Bus Sylk Bus Communications  
(Sensor Bus)  
Electrical Shock Hazard.  
a
Terminals are polarity insensitive.  
Table 2. SYLK Bus Sensor DIP Switch Settings.  
DIP Switch Positions for Switches 1, 2, & 3  
CAUTION  
Use  
1
2
3
Equipment Damage Hazard.  
Electrostatic discharge can short equipment  
circuitry.  
a
OFF  
ON  
OFF  
DA  
b
ON  
OFF  
OFF  
OFF  
OFF  
RA  
Ensure that you are properly grounded before  
handling the sensor.  
c
OFF  
OA  
a
b
c
DA = Discharge Air  
RA = Return Air  
OA = Outside Air  
Prepare wiring as follows:  
1. Strip 1/2 in. (13 mm) insulation from the conductor.  
2. Cut a single wire to 3/16 in. (5 mm). Insert the wire in  
the required terminal location and tighten the screw.  
3. Pull on each wire in all terminals to check for good  
mechanical connection.  
CHECKOUT  
Sylk Bus Sensor Wiring  
Use Fig. 4 and Table 1 to locate the wiring terminals for each  
Sylk Bus sensor.  
Refer to the JADE™ Economizer Module (Model W7220)  
Installation Instructions (Honeywell form 62-0331).  
Use Fig. 4 and Table 2 to set the DIP switches for the desired  
use of the sensor.  
TROUBLESHOOTING  
Refer to the JADE™ Economizer Module (Model W7220)  
Installation Instructions (Honeywell form 62-0331).  
DIP  
SWITCH  
LABEL  
DIP  
SWITCHES  
(3)  
SYLK BUS  
TERMINALS  
(1 AND 2)  
SYLK BUS  
2 PIN “EURO”  
CONNECTOR  
M32271  
Fig. 4. Sylk Bus sensor DIP switches.  
3
62-0332—03  
 
   
C7400S ENTHALPY SYLK BUS SENSOR  
JADE™ is a trademark of Honeywell, Inc.  
Automation and Control Solutions  
Honeywell International Inc.  
1985 Douglas Drive North  
® U.S. Registered Trademark  
© 2011 Honeywell International Inc.  
62-0332—03 M.S. Rev. 05-11  
Printed in U.S.A.  
Golden Valley, MN 55422  
customer.honeywell.com  
 

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