NCC 2019 Volume One
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Part J7 Heated water supply and swimming pool and spa pool plant

Part J7 Heated water supply and swimming pool and spa pool plant

J7.0 Deemed-to-Satisfy Provisions

(a)

Where a Deemed-to-Satisfy Solution is proposed, Performance Requirement JP1 is satisfied by complying with—

(i)

J0.1 to J0.5; and

(ii)

J1.1 to J1.6; and

(iii)

J3.1 to J3.7; and

(iv)

J5.1 to J5.12; and

(v)

J6.1 to J6.8; and

(vi)

J7.1 to J7.4; and

(vii)

J8.1 to J8.3.

(b)

Where a Performance Solution is proposed, the relevant Performance Requirement must be determined in accordance with A2.2(3) and A2.4(3) as applicable.

Intent

To clarify that JP1 will be satisfied if compliance is achieved with Parts J1 to J8.

See comments for Deemed-to-Satisfy Provisions of J0.0.

J7.1 *  *  *  *  *

Blank clause

This clause has deliberately been left blank.

The content of J7.1, which existed in BCA 2005, has been removed. The provision number J7.1 has been retained without text so as not to change the numbering of the current BCA from that of BCA 2005.

J7.2 Heated water supply

A heated water supply system for food preparation and sanitary purposes must be designed and installed in accordance with Part B2 of NCC Volume Three — Plumbing Code of Australia.

Intent

To set the minimum requirements for heated water systems.

The measures for heated water supply, which existed in BCA 2013, are now contained in Part B2 of NCC Volume Three — Plumbing Code of Australia.

J7.3 Swimming pool heating and pumping

ACT Appendix

(a)

Heating for a swimming pool must be by—

(i)

a solar heater; or

(ii)

a heater using reclaimed heat from another process such as reject heat from a refrigeration plant; or

(iii)

a geothermal heater; or

(iv)

a gas heater that—

(A)

if rated to consume 500 MJ/hour or less, achieves a minimum gross thermal efficiency of 86%; or

(B)

if rated to consume more than 500 MJ/hour, achieves a minimum gross thermal efficiency of 90%; or

(v)

a heat pump; or

(vi)

a combination of (i) to (v).

(b)

Where some or all of the heating required by (a) is by a gas heater or a heat pump, the swimming pool must have—

(i)

a cover with a minimum R-Value of 0.05; and

(ii)

a time switch to control the operation of the heater.

(c)

A time switch must be provided to control the operation of a circulation pump for a swimming pool.

(d)

Where required, a time switch must be capable of switching electric power on and off at variable pre-programmed times and on variable pre-programmed days.

(e)

Pipework carrying heated or chilled water for a swimming pool must comply with the insulation requirements of J5.8.

(f)

For the purpose of J7.3, a swimming pool does not include a spa pool.

Intent

To set the minimum requirements for swimming pool heating and pump control.

This provision states what energy source may be used to heat a swimming pool, and how efficient it must be if it is a gas heater. It is to meet the objective of reducing greenhouse gas emissions. It also requires a swimming pool to have—

  • if heated by gas or heat pump—
    • a cover with a minimum R-Value of 0.50; and
    • time switch operation for the heater; and
  • a time switch to control the operation of a circulation pump.

Some jurisdictions may have Performance Requirements for a pool cover under the Smart Approved Water Mark Scheme.

J7.4 has specific requirements for spa heating and pumping. Therefore, for the purpose of this provision, a swimming pool does not include a spa.

J7.4 Spa pool heating and pumping

ACT Appendix

(a)

Heating for a spa pool that shares a water recirculation system with a swimming pool must be by—

(i)

a solar heater; or

(ii)

a heater using reclaimed heat from another process such as reject heat from a refrigeration plant; or

(iii)

a geothermal heater; or

(iv)

a gas heater that—

(A)

if rated to consume 500 MJ/hour or less, achieves a minimum gross thermal efficiency of 86%; or

(B)

if rated to consume more than 500 MJ/hour, achieves a minimum gross thermal efficiency of 90%; or

(v)

a heat pump; or

(vi)

a combination of (i) to (v).

(b)

Where some or all of the heating required by (a) is by a gas heater or a heat pump, the spa pool must have—

(i)

a cover with a minimum R-Value of 0.05; and

(ii)

a push button and a time switch to control the operation of the heater.

(c)

A time switch must be provided to control the operation of a circulation pump for a spa pool having a capacity of 680 L or more.

(d)

Where required, a time switch must be capable of switching electric power on and off at variable pre-programmed times and on variable pre-programmed days.

(e)

Pipework carrying heated or chilled water for a spa pool must comply with the insulation requirements of J5.8.

Intent

To set the minimum requirements for spa pool heater efficiency and pump control.

As for swimming pools, this provision states what energy source may be used to heat a spa. It also requires a spa which is heated by gas or a heat pump to have—

  • a cover with a minimum R-Value of 0.50; and
  • a push button and time switch operation for the heater.

680 L is generally accepted as the capacity of when a spa bath becomes a spa pool.