1346.1007 Section 1007 Boiler Low-Water Cutoff


Published: 2015

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1346.1007 SECTION 1007 BOILER LOW-WATER CUTOFF.


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Subpart 1.

Section 1007.1.

IMC section 1007.1 is amended to read as follows:
1007.1 General. Steam and hot water boilers shall be protected with a low-water fuel cutoff control to stop the combustion operation when the water level drops below the lowest safe permissible water level in accordance with the following items:
1. An automatically fired hot water boiler or group of boilers piped together having a rated input of 400,000 Btu/hr (117 kW) or above shall be equipped with an automatic low-water fuel cutoff to stop the combustion operation before the water level drops below the lowest safe permissible water level established by the boiler manufacturer.
2. A boiler installed at an elevation where all radiation in the system is below the lowest safe permissible water level shall be equipped with an automatic low-water fuel cutoff to stop the combustion operation when the water level drops below the lowest safe permissible water level established by the boiler manufacturer.
3. A low-water fuel cutoff shall be installed when recommended by the manufacturer's installation instructions or listing and when special consideration and installations will require a low-water fuel cutoff to protect a hot water or steam boiler.
4. A means shall be provided for testing the operation of the low-water fuel cutoff without requiring the entire system to be drained.
5. A watertube or coil-type boiler requiring forced circulation to prevent overheating of the tubes or coils shall have a flow-sensing device installed, in lieu of the low-water fuel cutoff, to automatically stop the combustion operation when the circulating flow is interrupted.


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Subp. 2.

[Repealed, 34 SR 537]