Thermal Safety Switches - Field Controls SWG-3 Product Manual

THERMAL SAFETY SWITCHES

Our thermal safety switches detect flue gas spillage due to a blocked flue. With the safety switch wired in series with the burner
circuit, the switch will de-energize the system's burner or burner control once it senses the spillage of hot flue gases. Available for
gas-fired and oil-fired applications.
MODEL
FTS
SSK
WMO
GSK
LS
TCA
20
DESIGNED FOR USE ON LARGE GAS FURNACES AND BOILERS. CAN BE MOUNTED ON DRAFT
FTS-4 & FTS-6
HOOD OR DOUBLE-ACTING BAROMETRIC DRAFT CONTROL (BOTH BRACKETS INCLUDED).
MANUAL RESET.
KIT FORM OF GSK-3 OR GSK-4 GENERALLY USED ON MILLIVOLT WATER HEATERS. CAN ALSO
BE USED WITH 24 VAC GAS FURNACES OR BOILERS. KIT INCLUDES (2) GSK STYLE THERMAL
SSK-1 & SSK-3
SAFETY SWITCHES, (1) 12-GAUGE JUMPER WIRE, AND (1) 6 FT. LENGTH 12-GAUGE LEAD WIRE.
SSK-3 SWITCHES NOT SUPPLIED WITH SWITCH ENCLOSURES TCA-1 THERMOCOUPLE ADAPTER
REQUIRED FOR 30 MILLIVOLT APPLICATIONS
DESIGNED FOR USE WITH POWER VENTING AND CHIMNEY VENTED SYSTEMS FOR OIL-FIRED
WMO-1
APPLICATIONS. MANUAL RESET.
THE GSK-160A IS DESIGNED FOR USE ON DRAFT INDUCED FURNACES. ACTIVATES AT 160°F.
GSK-160A &
SILVER CONTACTS.AUTO RESET. THE GSK-250M IS DESIGNED FOR USE ON STEAM BOILERS.
GSK-250M
ACTIVATES AT 250°F. SILVER CONTACTS. MANUAL RESET.
DESIGNED FOR USE ON RESIDENTIAL AND LIGHT COMMERCIAL MILLIVOLT OR 24 VAC GAS
GSK-3 & GSK-4
FURNACES, BOILERS, AND WATER HEATERS. GENERALLY USED WITH SIDEWALL
VENTING APPLICATIONS.
INSTALLATION OF A HIGH TEMPERATURE VENT LIMIT SWITCH IS RECOMMENDED FOR LP AND
NATURAL GAS FIRED POWER VENTED AND NATURAL DRAFT WATER HEATERS. THIS DEVICE IS
LS-550A
INSTALLED TO LIMIT THE VENT TEMPERATURE IN EITHER PLASTIC PIPE (140º F TEMPERATURE LIMIT)
OR B VENT INSTALLATIONS (550º F TEMPERATURE LIMIT) CAUSED BY SCALED UP TANKS AND/OR
INADEQUATE VENTING.
NOTE: FOR 30 MILLIVOLT APPLICATIONS (RESIDENTIAL WATER HEATERS), A THERMOCOUPLE
TCA
ADAPTER IS REQUIRED TO CONNECT THE GSK. THE TCA IS USED TO SPLICE INTO THE
THERMOCOUPLE CIRCUIT. THE TCA-1 HAS STANDARD THREADS.
TYPICAL APPLICATIONS
Customer Service: 252.522.3031