Field Controls Switch GSK 160A User Manual

GAS SPILLAGE SENSING KIT  
Model: GSK-160A  
(with automatic reset)  
Installation of a spillage SAFETY Switch is recommended for  
LP and Natural gas fired systems with gas barometric draft  
controls. This device is intended for installation on a  
double-acting barometric draft control (such as the Field  
Controls model MG-1) that is installed in the venting  
system of an 80+ efficiency rated, fan-assisted gas-fired  
appliance. It is designed to detect flue gas spillage caused by a  
blocked flue system and/or inadequate draft. This device MUST  
be installed by a qualified installer in accordance with the  
manufacturer's installation instructions. Wiring MUST be in  
accordance with the National Electrical Code and applicable  
local codes.  
Before and after adding this safety control on existing  
appliances, an installation inspection in accordance with the  
National Fuel Gas Code 54, Z223.1 Appendix H should be  
performed and a combustion analysis is recommended to  
determine the operating condition of the appliance.  
CAUTION: Disconnect Electrical Power When Wiring Spillage  
Switch  
2630 Airport Road · Kinston, NC 28504  
Phone: 252-522-3031· Fax: 252-522-0214  
 
WIRING:  
CAUTION: When wiring the spillage switch into the burner control circuit route the wiring and secure away from  
any hot surface. Shut off all electrical power and gas supply to the appliance before working with any electrical  
connections.  
CAUTION: Never wire to the 24V GND terminal.  
Wire the spill switch in series with the burner fan-proving air pressure switch(es) as shown in Figure 4.  
WARNING: All field wiring must be in accordance with appliance manufacturer’s recommendations and  
all applicable local and national electrical codes.  
Figure 4  
SYSTEM CHECK-OUT PROCEDURE FOR GAS SPILLAGE SWITCH CONTROL  
1. Disconnect electrical power to the appliance.  
2. Shut off gas supply to appliance(s).  
3. Block the flue pipe above the draft control, draft hood or draft diverter.  
4. Re-establish gas supply to appliance and re-light pilot (if required).  
5. Adjust thermostat to call for heat.  
6. Flue gases should be spilling from draft control hood. Allow approximately 2 minutes for the system to back up and the  
GSK to trip, shutting the burner off.  
7. Disconnect electrical power, shut off the gas supply, and remove the blockage from the vent pipe after allowing the vent  
to cool.  
8. The GSK switch should reset a few minutes after tripping, and allow normal operation of the appliance. If the burner  
control has locked out, reset for normal operation.  
CAUTION: If for any reason the system has shut down during normal operation, the cause of the system failure should be  
investigated and corrected before resetting the safety switch and relighting the pilot.  
Page 3  
 
P/N 46561800 07/08  
 

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