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THERMAL SAFETY SWITCH Model: TSP-1 Installation of a Thermal Safety Switch or Spillage Switch is recommended for L.P. and Natural Gas fired systems with draft hoods. This device is installed to detect flue gas spillage from a blocked flue system and/or inadequate draft. This device MUST be installed by a qualified installer in accordance with manufacturer’s installation instructions.
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INSTALLATION CAUTION: Never attempt to shorten probe length. Avoid kinking probe while handling. Before and after installation, it is recommended follow pre-installation inspection instructions. NOTE: Probe length is designed for mounting on draft hoods up to 6” Dia. Pipe size. To achieve 360° spillage sensing on larger draft hood, an additional switch or switches would be required.
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WIRING Refer to System Check-out Procedure Section before operating. 24 VAC S YSTEMS CAUTION: Disconnect electrical power when wiring Safety Switch. 1. Remove one of the thermostat wires from the gas control valve and wire the safety switch in series with the thermostat circuit.
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Determine that the water pumps are in operating condition. b. Test low water cutoffs, automatic feed controls, pressure and temperature limit controls, and relief valves in accordance with the manufacturer’s recommendations to determine they are in operating condition. Page 4 PN 46170300 Rev A 11/00...