Chapter 15.24
MECHANICAL CODE AMENDMENTS

Sections:

15.24.010    Local amendments to the International Mechanical Code, 2015 Edition.

15.24.020    Administration.

15.24.201.3    Terms defined in other codes.

15.24.301.2    Energy utilization.

15.24.301.19    Carbon monoxide alarm.

15.24.303.8    Elevator shafts.

15.24.401.4    Intake openings.

15.24.401.5    Intake opening protection.

15.24.403.3.1.1    Outdoor airflow rate.

15.24.507.1    General.

15.24.508.1    Makeup air.

15.24.602.1    General.

15.24.1005.2    Potable water supply.

15.24.1006.8    Electrical requirements.

15.24.1105.3    Refrigerant detector.

15.24.1301.4    Fuel tanks, piping and valves.

15.24.010 Local amendments to the International Mechanical Code, 2015 Edition.

The amendments to the 2015 Edition of the International Mechanical Code are listed hereafter by section. The last digits of the section number, after the title and chapter digits, refer to the section of the International Mechanical Code being amended; i.e., PMC 15.24.201.3 refers to Section 201.3. (Ord. 17-005 § 4, 2017)

15.24.020 Administration.

Administrative actions under this chapter shall be in accordance with Chapters 15.00 and 15.02 PMC. (Ord. 17-005 § 4, 2017)

15.24.201.3 Terms defined in other codes.

Revise this section as follows:

Where terms are not defined in this code and are defined in the International Building Code, National Electrical Code, International Fire Code, International Fuel Gas Code or Uniform Plumbing Code, such terms shall have meanings ascribed to them in those codes as currently adopted and amended by the city of Palmer.

(Ord. 17-005 § 4, 2017)

15.24.301.2 Energy utilization.

Delete this section in its entirety. (Ord. 17-005 § 4, 2017)

15.24.301.19 Carbon monoxide alarm.

Add this section numbering, title and the following after Section 301.18:

Where a fuel-fired appliance is installed or replaced in an existing dwelling an approved carbon monoxide alarm shall be installed outside of each separate sleeping area in the immediate vicinity of the bedrooms. A single station, battery-operated carbon monoxide alarm shall be listed as complying with UL 2034 and shall be installed according to the manufacturer’s installation instructions.

(Ord. 17-005 § 4, 2017)

15.24.303.8 Elevator shafts.

Delete this section in its entirety and replace as follows:

Mechanical systems shall not be located in an elevator shaft except mechanical equipment and devices exclusively serving the elevator. Discharge piping from any sump pump shall exit the hoist way as low as practicable. Sump pumps shall be sized per the Uniform Plumbing Code as currently adopted and amended by the city of Palmer.

(Ord. 17-005 § 4, 2017)

15.24.401.4 Intake openings.

Add the following exception:

Exception: Passive Outdoor Air intake openings, including opening doors and windows, shall not be located closer than three feet horizontally to any gas pressure regulator vent opening, unless such vent opening is located at least three feet above the air intake opening.

(Ord. 17-005 § 4, 2017)

15.24.401.5 Intake opening protection.

Add an exception at the end of this section as follows:

Exception: HRV weather hoods as provided by the respective unit’s manufacturer may be used for its intake and Exhaust Air openings.

(Ord. 17-005 § 4, 2017)

15.24.403.3.1.1 Outdoor airflow rate.

Amend this section by revising the first sentence to read as follows:

Ventilation systems shall be designed to have the capacity to supply the minimum outdoor airflow rate determined in accordance with Table 403.3.1.1 based on the occupancy of the spaces and the occupant load or in accordance with the latest edition of ASHRAE Standard 62.

(Ord. 17-005 § 4, 2017)

15.24.507.1 General.

Amend this section by adding the following sentence:

Design documents for commercial hoods, commercial ventilation and makeup air systems shall be designed by and bear the stamp of a professional mechanical engineer currently registered in the State of Alaska.

(Ord. 17-005 § 4, 2017)

15.24.508.1 Makeup air.

Amend this section by adding the following sentence:

Design documents for commercial hoods, commercial ventilation and makeup air systems shall be designed by and bear the stamp of a professional mechanical engineer currently registered in the State of Alaska.

(Ord. 17-005 § 4, 2017)

15.24.602.1 General.

Revise this section as follows:

Supply, return, exhaust, relief and ventilation air plenums shall be limited to areas above a ceiling or below the floor, attic spaces and mechanical equipment rooms. Plenums shall be limited to one fire area. Fuel-fired appliances shall not be installed within a plenum.

Exception: Underfloor crawlspaces shall not be used as plenums.

(Ord. 17-005 § 4, 2017)

15.24.1005.2 Potable water supply.

Delete this section and its title in their entirety and substitute the following:

Section 1005.2 Water Supply. An automatic means of water or heat transfer liquid makeup supply is required to be connected to all boilers. Connections to the potable water piping system shall be in accordance with the Uniform Plumbing Code as currently adopted and amended by the city of Palmer.

(Ord. 17-005 § 4, 2017)

15.24.1006.8 Electrical requirements.

Add the following sentence:

The required means of disconnect shall be within clear view of the boiler burner.

(Ord. 17-005 § 4, 2017)

15.24.1105.3 Refrigerant detector.

Amend this section by adding a second sentence to read as follows:

Refrigerant detectors shall alarm both inside and outside the machinery room and refrigerated space.

(Ord. 17-005 § 4, 2017)

15.24.1301.4 Fuel tanks, piping and valves.

Amend and add to this section as follows:

The tank, piping and valves for appliances burning oil shall be installed in accordance with the requirements of this chapter. The fuel oil supply line is required to be taken from the top of the tank only, and where the level of fuel within the tank may be above the inlet port of the appliance served an approved method to prevent siphoning from the tank must be provided. If the tank is located inside a building, emergency pressure relief venting is required to the exterior.

(Ord. 17-005 § 4, 2017)