E-1.1, r. 1 - Regulation respecting energy conservation in new buildings

Section 109 Disposition versions

2012-09-01

109. Any piping used in the heating or cooling of a building, and carrying a fluid with a temperature of less than 13 ºC or more than 50 ºC, must be provided with thermal insulation in accordance with the requirements of the following Table, when the heat loss or heat gain from the piping will increase the energy requirements of the building for lack of insulation.

However, this provision does not apply to piping in heated spaces in a dwelling unit that serves only that unit, or piping that is part of a heating or cooling unit.

TABLE

(s. 109)

                         Insulation thickness (1) in mm                             

Fluid temperature                      Nominal pipe size               
range °C          _________________________________________________________________

                    1 in     1 1/4 to 2 in    2 1/2 to 4 in    5 and 6 in      8 in
                  and less                                                    and +

151 - 240            64            64               76            89            89

121 - 150            51            64               64            76            76

 96 - 120            38            38               51            51            51

 50 -  95            25            25               38            38            38

  5 -  13            13            19               25            25            25

below 5              25            38               38            38            38

Note:

1. The above Table is based on insulation with a thermal resistivity in the range of 28 to 32 mºC/W, where the thermal resistivity is determined by using the thermal conductivity measured at an average temperature of 24 ºC in accordance with ASTM-C177-85, Standard Test Method for Steady-State Heat Flux Measurements and Thermal Transmission Properties by Means of the Guarded Hot Plate Apparatus. For insulation with a thermal resistivity of less than 28 mºC/W, the thickness is determined by multiplying the thickness values in the Table by 28/R, where R is the actual thermal resistivity of the insulation. For insulation with a thermal resistivity of more than 32 mºC/W, the thickness is determined by multiplying the thickness values in the Table by 32/R, where R is the actual thermal resistivity of the insulation.

O.C. 89-83, s. 109; O.C. 1721-85, s. 19; O.C. 1211-92, s. 15.