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P/N: 18122     

Page 1 

Rev. 1.0 

 

Rev Date: 9/7/07 

S-2A

 

 

Propane / CNG Fume Detector with Solenoid Valve Control 

Installation and Operation Manual 

MADE IN THE USA. 

 
 
• Automatic Solenoid Control  
• Dual Sensor Capability  
• Microcomputer Operation  
• Solid State Sensors  
• Self Testing Circuitry  
 
 

READ THIS MANUAL CAREFULLY AND  
SAVE FOR FUTURE REFERENCE. KEEP  
THIS MANUAL WITH THE S-2A.  
 
 
 
 

 
 
 

Introduction 

 

The S-2A vapor-monitoring system utilizes advanced technology for detection of propane (LPG) 
fuel vapors as well as CNG (Compressed Natural Gas). The S-2A allows the connection of two 
(2) sensors and has both visual and audible alarms. Test switches are provided for full checking 
of all operations. System operation and correct sensor operation are continually monitored and 
indicators are provided for fault detection. The S-2A has an internal relay for automatic control of 
fuel solenoid. Read this owner’s manual completely before installation. Failure to read and follow 
these instructions can result in damage to the unit voiding the warranty.  
 
 
 
 

Components This Kit Includes

  

• One S-2A Display w/Bezel    

 

• Four screws for the display  

• One SV-1 Solenoid Valve  

 

 

• Two screws for the sensor  

• One 20 MS-2 Sensor  
 
 
 
 

CAUTION

: NO POWER ON/OFF SWITCH IS PROVIDED FOR THIS UNIT. TO  

FUNCTION AS INTENDED, THE S-2A MUST BE CONNECTED TO A CORRECT  
POWER SOURCE, AND FOR MAXIMUM EFFECTIVENESS, BE POWERED AT  
ALL TIMES WHILE ABOARD. IF POWER IS ON AND LEFT UNATTENDED FOR AN 
EXTENDED PERIOD OF TIME, BATTERY POWER MAY BE DIMINISHED.  

 

Содержание S-2A

Страница 1: ...full checking of all operations System operation and correct sensor operation are continually monitored and indicators are provided for fault detection The S 2A has an internal relay for automatic con...

Страница 2: ...ower up Unit Fault Off Unit Functional Amber Fault Detected horn beeping Display Installation The S 2A should be mounted in a convenient location preferably at the source of propane usage i e galley h...

Страница 3: ...s within nine 9 inches 22 86cm of the ceiling height Do not locate sensor directly over cooking or heating appliances Keep sensor dry Solenoid Installation Propane LPG Mount the solenoid in line on th...

Страница 4: ...valve to S 2A display using figure 6 on page 4 Quick Disconnect Style Sensor with 20 sensor cable is included The disconnect connector plug is located 12 from the red sensor In the event you need to r...

Страница 5: ...ill vary depending upon usage of the unit Long periods of inactivity will require long warm up periods After the warm up period the indicator will change to green It a sensor is not installed the sens...

Страница 6: ...rer for repair Nuisance Alarms The sensor used for the S 2A is sensitive to hydrocarbons an alarm may be triggered by the use of other chemicals such as cleaners paint polish etc The sensors will also...

Страница 7: ...as a supplement warning only It is NOT intended to replace standard safety practices which should be carried out around explosive gases i e inspect all rooms and compartments check all gas fittings a...

Страница 8: ...epaired or replaced at Seller s option provided that a the product has not been subjected to abuse contamination neglect accident incorrect wiring not our own improper installation or servicing or use...

Страница 9: ...P N 18122 Page 9 Rev 1 0 Rev Date 9 7 07...

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