§ 27-802 Medium temperature equipment.

Equipment whose products of combustion at the point of leaving the equipment have a temperature of between six hundred degrees and one thousand degrees Fahrenheit under normal operating conditions shall be classified as medium temperature equipment.

§ 27-803 High temperature equipment.

Equipment whose products of combustion at the point of leaving the equipment have a temperature of one thousand degrees Fahrenheit or greater under normal operating conditions shall be classified as high temperature equipment.

Article 7: Equipment Foundation Mountings

§ 27-804 General requirements.

All floor mounted combustion or heating equipment shall be mounted on noncombustible construction as provided in reference standard RS 14-17 or on combustible construction if such construction is protected as required in reference standard RS 14-17, provided the following conditions are met:

   (a)   All clearances shall comply with the requirements specified in section 27-792 of article one of this subchapter.

   (b)   Heating and combustion equipment which has been tested in accordance with applicable standards listed in reference standard RS-14, shall be installed with the clearances determined by such tests.

   (c)   Equipment which has been approved, as provided in section 27-135 of article eight of subchapter one of this chapter, shall be installed in accordance with the conditions of such approval.

   (d)   When mounted above combustible construction, the equipment is arranged so that flame or gaseous products of combustion do not impinge upon the base of the equipment.

Article 8: Equipment Clearances

§ 27-805 General requirements.

Clearances from combustible construction in walls, partitions and ceilings adjacent to combustion or heating equipment shall not be less than that tabulated in reference standard RS 14-15, provided the following conditions are met:

   (a)   All clearances shall comply with the requirements specified in section 27-792 of article one of this subchapter.

   (b)   Heating and combustion equipment which has been tested in accordance with the applicable standards listed in reference standard RS-14, shall be installed with the clearances determined by such tests.

   (c)   Equipment which has been approved, as provided in section 27-135 of article eight of subchapter one of this chapter, shall be installed in accordance with the conditions of such approval.

§ 27-806 Reduction of clearances.

The clearances required in section 27-805 of this article may be reduced when the exposed combustible construction is protected with noncombustible material in accordance with the forms of protection listed in reference standard RS 14-16.

Article 9: Combustion Air

§ 27-807 Air supply.

   (a)   Oil fuels. The air supply for equipment burning fuel oil shall comply with the requirements in applicable standards in reference standard RS-14. Ventilation shall be capable of providing at least thirty-six cfm of air for each gallon of oil per hour required to fire the equipment to gross output.

   (b)   Gas fuels. The air supply for equipment burning gas shall comply with the requirements of article sixteen of this subchapter.

   (c)   Solid fuels. The air supply for equipment burning solid fuels shall comply with those required for burning fuel oil based on Btu equivalent of the solid fuel.

   (d)   Mechanical ventilation. If the ventilation for the purpose of combustion is supplied mechanically, the ventilating system shall be electrically interlocked with the burner so that when the burner is in operation, the ventilating system shall maintain the room in which the equipment is located at a pressure not less than the outdoor atmospheric pressure.