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.
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