Include cross references to other sections where these contain related work.

Refer to 7556 SOLID FUEL SPACE HEATING SYSTEM for wetbacks.

Delete from the DOCUMENTS clause any document not cited.  List any additional cited documents.

The following are related documents and if referred to in the work section need to be added to the list of DOCUMENTS:

Electricity (Safety) Regulations 2010 (Reprint as at 21 January 2019).

Chartered Institute of Plumbing and Heating Emgineerimg - Master Plumbers Plumbing Engineering Services Design Guide

AS/NZS 5125.1 only addresses residential sanitary hot water supply.

AS/NZS 3000:2007 is cited in the Electricity (Safety) Regulations 2010, which is cited by NZBCG9/VM1.  AS/NZS 3000:2018 is cited in NZBC C/AS1-AS2 Appendix in relation to smoke control in air handling systems.  This section uses both versions where they equally apply, and a date is suffixed where there is a difference e.g. the 2018 version covers most recent technologies.   Amend the section if you want to use a particular version or a particular instance (by suffixing with the version date e.g. AS/NZS 3000:2018).

It is important to ensure that all personnel on site have access to accurate, up to date technical information on the many products, materials and equipment used on a project.  In most cases individual products are not used in isolation, but form part of a building process.  Also a particular manufacturer and/or supplier requirements for handling, storage, preparation, installation, finishing and protection of their product can vary from what might be considered the norm.  Access to technical information can help overcome this potential problem.

Check general section 1237 WARRANTIES for the date of commencement of warranties; which is normally practical completion of the contract.  Refer to the chosen conditions of contract as it may also contain information on warranties and guarantees.

Supplier and manufacturer warranties are those that are freely offered by the supplier or manufacturer.  They are usually in their standard form and subject to their terms and conditions.

It is sometimes necessary to call for diagrammatic pipework layouts from the plumber prior to installation.  This will depend on the degree of detail provided elsewhere and on whether to some degree at least the design of the system is a contract requirement.

Check the general section 1239 OPERATION & MAINTENANCE, and modify requirements if those set out are too onerous or too basic for the project in hand.

Confirm when and where the information is to be supplied and in what numbers.

Modify the clause to suit the project water heating system, the clause has been written to suit storage water heaters, although temperatures at fixtures still apply.  Modify clause if unrestricted hot water supply heaters can not be controlled to maintained tolerable temperatures to suit use (Note above 65°C scalding can be instantaneous).

Industrial hot water systems may be more specific than stated above, modify to suit.

Modify the clause to suit the project temperature requirements, as for some buildings it would be cheaper to provide all hot water at 50ºC, but it may not be allowed or desirable.

Specific piping and tempering diagrams may be necessary on some projects to achieve all the above temperatures.

For flow and return systems add "Flow and return piping systems to maintain minimum temperature of 60ºC within the system".

Note that a gas-powered heating/ventilating system may need to be certified by an independent qualified person (IQP).

Note that a gas-powered heating/ventilating system may need to be certified by an independent qualified person (IQP).  A Certificate of Compliance (CoC) would be required for the Code Compliance to be signed off by the BCA.

This provision is mandatory, and requires an importer or New Zealand manufacturer to provide a SDoC prior to supplying the gas appliance.

Recycles, reclaimed non potable water supply only and available in 2 sizes:

Suitable for rainwater supply.

Materials available are fibreglass, polyurethane, rock fibre and flexible foam.  Finishes - plain, calico and aluminium foil.

Thermostatic mixing valves, thermostatically controlled taps and instantaneous temperature limited water heaters may also be acceptable temperature control devices.  Refer to NZBC G12/AS1 Table 8A & 8B for further information.

In accordance with NZBC G12/AS1 Table 8B, when a maximum delivery temperature of 45°C is required then only thermostatic mixing valves or thermostatically controlled taps may be used.

In G12/AS1, Electric and gas storage water heaters which are valve vented (unvented) systems require to have either an expansion control valve or an expansion vessel.  Expansion vessels are only suitable for mains pressure systems, for low pressure systems use an expansion control valve.

Modify the following selections to suit requirements.  Add instantaneous electric water heaters where appropriate.

These non-storage units are usually compact, single or 3 phase and high amperage.  The lower amperages tend to work best with low-flow taps/fittings.  Tempering valves are not usually required for those units delivering water at below the maximum water temperatures allowed.

Co-ordinate with appropriate electrical section, for switched fixed wired outlet to suit phase and amperage selected.

Refer to the manufacturer for details and list in SELECTIONS.

Modify where the boiling cylinder is concealed.

Both externally and internally-mounted cylinders are available, for either natural gas or LPG.

Both externally and internally-mounted models are available, for either natural gas or LPG.

Remote digital controllers are available for these units.  Refer to the manufacturer for details and list in SELECTIONS.

Some systems incorporate an electric element booster in the cylinder for when the air is too cold for heat pump to extract air efficiently.

This clause describes an air source heat  pump water heater; modify to suit solar boosted heat pump water heaters to AS/NZS 2712.

This clause uses a cylinder separate from a combined evaporator/condenser, with water flow and return between, pipe work to usually copper or thermal resistant PEX.  Modify if system uses a combined cylinder/condenser and separate outdoor evaporator with refrigerant flow and return.

Some systems incorporate an electric element booster in the cylinder for when the air is too cold for heat pump to extract air efficiently.

This clause describes an air source heat  pump water heater; modify to suit a solar boosted heat pump water heaters to AS/NZS 2712.

Only Buteline components can be used in the Buteline system.  No substitutions are allowed.

Use the following fire stopping clauses for simple or small fire stopping, or if you are only using Masterspec Basic or Landscapes systems.  On other Masterspec systems, if it is complex, critical or large scale, consider using the section 7382 FIRE STOPPING SYSTEMS or a related branded section.

Use collars for large metal pipes and very large diameter plastic pipes, wraps will usually do other situations depending on the penetration and the fire rating required.

Use this standard generic clause and if appropriate add additional special requirements.

Use these standard generic clauses and if appropriate add additional special requirements.

Modify clause if using AS/NZS 3500.1 & AS/NZS 3500.4 as modified by NZBC G12/AS3 or NZBC G12/VM1, Plumbing Engineering Services Design Guide, for water supply pipework sizing.

Modify this clause to suit the project's water supply requirements regarding form, pipe material (metal or plastic), configuration and high hazard situations.

It is recommended that the isolating valve for the water supply pipe at point of entry to the building be located in an accessible place in the garage (when the house is connected or close to the garage) or in a plant room.

Suggested location for an accessible position is a service or store room.  This applies to dishwashers, washing machines, refrigerators with icemakers and storage water heaters.

An in line filter is very rarely required when Buteline pipework and fittings are used.

Modify this section to more closely describe the required installation, which might include mains or low pressure and/or cylinders installed in series.

NOTE:

AS/NZS 5601/1 requires seismic restraint design to NZS 4219, which is quite complex.  Check the appliance manufacturer's restraint details comply, or use Engineers details, as it is unlikely the plumber will be able to provide other details.

NOTE:

For non-gas appliances  NZBC G12/AS1 provides restraint options, one option for storage cylinders of up to 360 litres, is NZBC G12/AS1, figure 14, which is an easily understood solution.

Modify this or the following clause to suit an under-sink boiling unit.

Most units should not require separate controls for temperature, expansion or pressure under normal conditions, confirm with manufacturer/supplier.

Coordinate installation of gas appliances with appropriate gas sections, 7211 GAS SYSTEM UTILITY NETWORK or 7212 GAS SYSTEM LPG CYLINDERS.

Add further detail on the necessary flue installation and ventilation around the unit itself, depending on the chosen location.

Coordinate installation of gas appliances with appropriate gas sections, 7211 GAS SYSTEM UTILITY NETWORK or 7212 GAS SYSTEM LPG CYLINDERS.

Add further detail on the necessary flue installation and ventilation around the unit itself, depending on the chosen location.

Modify this section to more closely describe the required installation, options include all new split system and retrofit split system.

Overflow trays must be used for internal storage cylinders, but are only required for external cylinders if there is a risk to buildings or other properties.

Delete clause INSTALL TEMPERING VALVE WITH AQUAFUSE if using this clause.

Delete clause INSTALL TEMPERING VALVE, if using this clause.

In G12/AS1, Electric and gas storage water heaters which are valve vented (unvented) systems require to have either an expansion control valve or an expansion vessel.  Expansion vessels are only suitable for mains pressure systems, for low pressure systems use an expansion control valve.

This system is rarely required, only for a very large or elongated building.

Delete if using the section 7382 FIRE STOPPING SYSTEMS or a related branded section.

This applies to dishwashers, washing machines and refrigerators with icemakers.

Modify this clause to more closely reflect project requirements.

Use this standard generic clause and if appropriate add additional special requirements.

Insulation to hot water line may be required in certain areas.  Enter required or not required as applicable

Suitable only for recycled, reclaimed non potable water supply.

Suitable only for rainwater supply, non potable.

Specify ring main systems in larger houses where a quality delivery system is required.

Insulation to hot water line may be required in certain areas.  Enter required or not required as applicable.

Specify ring main systems in larger houses where a quality delivery system is required.

Insulation to hot water line may be required in certain areas.  Enter required or not required as applicable.

These non-storage units are usually compact, single or 3 phase and high amperage.  Tempering valves are not usually required for those units delivering water at below the maximum water temperatures allowed.  Refer clause HOT WATER TEMPERATURES for maximum temperatures allowed.

Co-ordinate with appropriate electrical section, for switched fixed wired outlet to suit phase and amperage selected.

Remote digital controllers are an optional extra and must be specifically specified.  Types include a Compact controller, Shower proof control (for wet areas) and a Deluxe bath controller.  Refer to the manufacturer for full details.

Modify this clause if using an existing cylinder.

Installation of tempering valve without AquaFuse requires I metre length copper pipe.

Thermostatic mixing valves, thermostatically controlled taps and instantaneous temperature limited water heaters may also be acceptable temperature control devices.  Refer to NZBC G12/AS1 Table 8A & 8B for further information.

In accordance with NZBC G12/AS1 Table 8B, when a maximum delivery temperature of 45°C is required then only thermostatic mixing valves or thermostatically controlled taps may be used.

In G12/AS1, Electric and gas storage water heaters which are valve vented (unvented) systems require to have either an expansion control valve or an expansion vessel.  Expansion vessels are only suitable for mains pressure systems, for low pressure systems use an expansion control valve.

Suggested location is in a readily accessible position in a plant room or garage.

Suggested location is adjacent to the main isolating valve and positioned for easy access for cleaning.

Suggested location is in an accessible position such as service or store rooms.

Suggested appliances include dishwashers, washing machines and refrigerators with icemakers.

Suggested appliances include dishwashers and washing machines.

Use the following fire stopping clauses for simple or small fire stopping, or if you are only using Masterspec Basic or Landscapes systems.  On other Masterspec systems, if it is complex, critical or large scale consider using the section 7382 FIRE STOPPING SYSTEMS or a related branded section.

Note: Check with manufacturer what systems suit penetrations/services types.