Operating instructions

CONNECTIONS – PLUMBING

All plumbing work must be carried out by a qualified person and in compliance with the Standard

AS/NZS 3500.4 and all local codes and regulatory authority requirements. In New Zealand the installation

must also conform with the New Zealand Building Code.

All gas work must be carried out by a qualified person and in compliance with the Standard AS 5601 or

AS/NZS 5601.1, as applicable under local regulations, and all local codes and regulatory authority

requirements. In New Zealand the installation must also conform with NZS 5261, as applicable under local

regulations.

CONNECTION SIZES

Model

884 024

886 024

Hot water connection R¾/20

Cold water connection R¾/20

Gas inlet connection R¾/20

Condensate drain connection R½/15

WATER INLET AND OUTLET

All pipe work must be cleared of foreign matter before

connection and purged before attempting to operate the

water heater. All olive compression fittings must use brass

or copper olives. Use thread sealing tape or approved

thread sealant on all fittings.

A full flow gate valve or ball valve must be installed on the

cold water line or solar preheat water line to the water

heater. A non return valve or stop tap must not be

installed. An acceptable arrangement is shown in the

diagram. Refer also to “Hot Water Delivery” on page 38

and to “Mains Water Supply” on page 37.

A disconnection union must always be provided at the cold

water inlet and hot water outlet on the water heater to

allow for disconnection of the water heater.

Insulation used on the cold and hot water lines must

extend up to the cold water inlet and hot water outlet of the

water heater.

Notes:

• It is essential all pipe connections be correctly aligned, otherwise component connections within the

water heater may be strained and / or components themselves misaligned. It is recommended also,

wherever possible, pipe connections be made at the water heater first and final pipe runs be made in

soft copper pipe to allow some adjustment for misalignment.

• Use the spanner flats on the water heater fittings and take care to avoid twisting the water inlet and

outlet pipes inside the jacket.

• The maximum supply temperature to the water heater when used as an in-series gas booster to a solar

water heater should not exceed 80°C.

Gas Water Heater

Cold (or Solar Preheat) and Hot Water

and Gas Connection Details