GAS LEAK DETECTOR INSTALLATION & USER GUIDE 1. INTRODUCTION The Honeywell Refrigerant Gas Detection sensors, SN0500 (for refrigerant R404a) and SN0501 (for refrigerant R410) are used to detect the leakage of refrigerant gas and notify a monitoring system or provide a local indication (i.e. audib...
Page 4 - ANALOGUE OUTPUTS
GAS LEAK DETECTOR INSTALLATION & USER GUIDE 3. POWER SUPPLY The Power supply is connected at Con 1 (see Fig. 1) Green LED on - shows power connected. Pin 1 = 0V, Pin 2 = 12 to 24 VAC or 12 to 30VDC, Pin 3 = Earth. The 0V (pin 1) on the power supply terminal block (CON 1) can withstand 50V AC or ...
Page 5 - Relay 1; GAS DETECTION RANGE
GAS LEAK DETECTOR INSTALLATION & USER GUIDE 5. RELAY CONTACTS Note: If changing any jumper - power must be removed. There are two relays rated up to 1 Amp at 24V DC/AC. The status of the relays is jumper selectable. Relay 1 at Con 6. Low-level alarm. Yellow LED on when in alarm. Normally closed ...
Page 6 - STANDARD DEFAULT SETTINGS
GAS LEAK DETECTOR INSTALLATION & USER GUIDE 7. STANDARD DEFAULT SETTINGS Relay 1 Low-level relay set at 500 PPM, NO, Auto reset mode Relay 2 High-level relay set at 900 PPM, NO, Auto reset mode. Delays on both alarm outputs are 0 minutes (no delay). CON 1: Power Supply input Power on indicated b...
Page 7 - CONNECTIONS AT A GLANCE; Connector Pin Description
GAS LEAK DETECTOR INSTALLATION & USER GUIDE 8. CONNECTIONS AT A GLANCE Connector Pin Description CON1 1 0V Supply Voltage. CON1 2 24V Supply Voltage. CON1 3 Earth. CON2 1 Display Connection – not used. CON2 2 Display Connection – not used. CON2 3 Display Connection – not used. CON2 4 Display Con...
Page 8 - Automation & Control Solutions
Automation & Control Solutions Refrigeration Control Newhouse Industrial Estate Motherwell Lanarkshire ML1 5SB Phone: (44) 01698 481698 Fax: (44) 01698 481699 www.honeywell.com/refrigeration Subject to change without notice. EN1B-0014UK07 R1204
GAS LEAK DETECTOR INSTALLATION & USER GUIDE 1. INTRODUCTION The Honeywell Refrigerant Gas Detection sensors, SN0500 (for refrigerant R404a) and SN0501 (for refrigerant R410) are used to detect the leakage of refrigerant gas and notify a monitoring system or provide a local indication (i.e. audib...
Page 4 - ANALOGUE OUTPUTS
GAS LEAK DETECTOR INSTALLATION & USER GUIDE 3. POWER SUPPLY The Power supply is connected at Con 1 (see Fig. 1) Green LED on - shows power connected. Pin 1 = 0V, Pin 2 = 12 to 24 VAC or 12 to 30VDC, Pin 3 = Earth. The 0V (pin 1) on the power supply terminal block (CON 1) can withstand 50V AC or ...
Page 5 - Relay 1; GAS DETECTION RANGE
GAS LEAK DETECTOR INSTALLATION & USER GUIDE 5. RELAY CONTACTS Note: If changing any jumper - power must be removed. There are two relays rated up to 1 Amp at 24V DC/AC. The status of the relays is jumper selectable. Relay 1 at Con 6. Low-level alarm. Yellow LED on when in alarm. Normally closed ...
Page 6 - STANDARD DEFAULT SETTINGS
GAS LEAK DETECTOR INSTALLATION & USER GUIDE 7. STANDARD DEFAULT SETTINGS Relay 1 Low-level relay set at 500 PPM, NO, Auto reset mode Relay 2 High-level relay set at 900 PPM, NO, Auto reset mode. Delays on both alarm outputs are 0 minutes (no delay). CON 1: Power Supply input Power on indicated b...
Page 7 - CONNECTIONS AT A GLANCE; Connector Pin Description
GAS LEAK DETECTOR INSTALLATION & USER GUIDE 8. CONNECTIONS AT A GLANCE Connector Pin Description CON1 1 0V Supply Voltage. CON1 2 24V Supply Voltage. CON1 3 Earth. CON2 1 Display Connection – not used. CON2 2 Display Connection – not used. CON2 3 Display Connection – not used. CON2 4 Display Con...
Page 8 - Automation & Control Solutions
Automation & Control Solutions Refrigeration Control Newhouse Industrial Estate Motherwell Lanarkshire ML1 5SB Phone: (44) 01698 481698 Fax: (44) 01698 481699 www.honeywell.com/refrigeration Subject to change without notice. EN1B-0014UK07 R1204