Specifications

COMMISSIONING

IN-SERIES BOOSTER

Refer to the Owner‟s Guide and Installation Instructions supplied with the in-series booster for the

commissioning procedure of the water heater.

If a gas water heater has been installed as an in-series booster to the solar water heater, then to complete

the installation, it is necessary to check the gas supply pressure at the inlet to the in-series gas booster, and

also the minimum test point pressure and the maximum test point pressure of the in-series gas booster.

Refer to “Gas Inlet Pressure” on page 58 and to “Burner Gas Pressure” on page 58.

PRESET OUTLET TEMPERATURE SETTING

Note: AS 3498 requires that a water heater provides the means to inhibit the growth of Legionella bacteria in

potable water. If this water heater is installed with an continuous flow in-series gas booster, then this

requirement of AS 3498 can be satisfied provided the booster is energised, its preset outlet temperature

setting is 70°C or higher and a remote temperature controller is not used.

If this water heater is installed with an in-series storage booster, then this requirement of AS 3498 can be

satisfied provided the storage booster is energised and its thermostat setting is 60°C or higher.

It will be necessary to check and if required to adjust the preset outlet temperature setting of the continuous

flow water heater or the thermostat setting of a storage water heater when it is installed as an in-series

booster to a solar water heater or if it is an existing water heater and a solar water heater is then installed.

Refer to the Owner‟s Guide and Installation Instructions supplied with the continuous flow in-series gas

booster for the procedure to check and adjust the preset outlet temperature if required.

Refer to the Owner‟s Guide and Installation Instructions supplied with the in-series storage booster for the

procedure to check and adjust the thermostat setting if required.

Note: Consideration must be given to the delivery temperature to any ablution and public areas such as a

bathroom, ensuite or public amenities. Refer to “Hot Water Delivery” on page 26 and to the schematics of

“Two Temperature Zones Using A Temperature Limiting Device” on page 26.

GAS INLET PRESSURE

IMPORTANT - CHECK the gas supply pressure at the inlet to the water heater with the water heater and all

other gas burning appliances in the premises operating (burners alight). The minimum gas supply pressure

is:

Natural Gas 1.13 kPa Propane 2.75 kPa

If this minimum cannot be achieved, it may indicate the meter or the gas line to the water heater is

undersized. It is important to ensure that an adequate gas supply pressure is available to the water heater

when other gas burning appliances, on the same gas supply, are operating.

Refer to the “Gas Inlet Test Point Pressure” section of the Installation Instructions and Owner‟s Guide

supplied with the in-series gas booster.

BURNER GAS PRESSURE

It is necessary to check the burner gas pressure at both the minimum and maximum operational settings. To

check and if necessary adjust the operational gas pressures, the electrical supply to the in-series gas

booster must be switched on, the burners ignited and hot water must be flowing from a hot tap.

Warning: The removal of the front cover will expose 240 volt wiring. Take care not to touch wiring

terminals.

Refer to the “Minimum Test Point Gas Pressure” and “Maximum Test Point Gas Pressure” sections of the

Installation Instructions and Owner‟s Guide supplied with the continuous flow in-series gas booster.