Minnesota Administrative Rules
Agency 151 - Labor and Industry Department
Chapter 5225 - BOILERS AND BOATS
INSPECTIONS
Part 5225.2500 - LOW WATER DEVICES
Universal Citation: MN Rules 5225.2500
Current through Register Vol. 48, No. 39, March 25, 2024
Subpart 1. [Repealed, 13 SR 1917]
Subp. 2. [Repealed, 13 SR 1917]
Subp. 3. Requirements.
The following must be equipped with a low water cutout that will shut off the fuel supply in case of a low water condition:
A. each automatically fired steam boiler;
and
B. each automatically fired hot
water heating boiler or other hot liquid boiler plants of two or more boilers
with individual isolating valves connected to a common header with a total heat
input exceeding 750,000 Btu per hour input.
Subp. 4. Flow-sensing device required.
The following must have a flow-sensing device installed in the outlet piping instead of the low water fuel cutoff required in subpart 3 to automatically cut off the fuel supply when the circulating flow is interrupted:
A. a coil type boiler plant exceeding 750,000
Btu; and
B. a watertube boiler
plant with heat input greater than 750,000 Btu per hour requiring forced
circulation to prevent overheating of the coils or tubes.
Statutory Authority: MS s 175.171; 183.44; 183.465; 183.466; 326B.964; 326B.966
Disclaimer: These regulations may not be the most recent version. Minnesota may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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