AquaMAX G270VE Series Technical Document

This water heater must be installed and serviced by a qualified person.

Please leave this guide with the householder.

Owner’s Guide

and

Installation Instructions

Outdoor Domestic Mains Pressure

Gas Storage Water Heater

G270VE Series

Warning: Upon completion of the installation and commissioning of the

water heater, leave this guide with the householder or responsible officer.

DO NOT leave this guide inside the cover of the water heater, as it may

interfere with the safe operation of the water heater or ignite when the

water heater is turned on.

Patents

This water heater may be protected by one or more patents or registered

designs in the name of Aquamax Australia Pty Ltd.

Trademarks

Registered trademark of Aquamax Australia Pty Ltd.

Trademark of Aquamax Australia Pty Ltd.

CONTENTS

Householder: Read the section ‘About Your Water Heater’ (pages 3 to

19). The ‘Installation’ section is intended for the installer but may be of

interest.

ABOUT YOUR WATER HEATER ................................................................3

Model Type................................................................................................3

Lighting the Water Heater .........................................................................5

Shut Down Procedure ...............................................................................8

Temperature Adjustment...........................................................................8

Other Important Information ...................................................................... 9

Periodic Maintenance..............................................................................11

Water Chemistry......................................................................................14

Troubleshooting ......................................................................................17

INSTALLATION ..........................................................................................20

Installation Overview ...............................................................................20

Water Supplies ........................................................................................23

Plumbing & Plumbing Diagrams .............................................................24

Plumbing Connections.........................................................................24

Two Temperature Zones Using a Temperature Limiting Device.........28

Circulated Hot Water Flow & Return Systems ....................................29

Commissioning........................................................................................31

To Fill, Turn ON and Commission the Water Heater ..........................31

Testing Inlet Gas Pressure ..................................................................32

Draining the Water Heater ......................................................................35

Dimensions & Technical Data .................................................................36

WARRANTY ...............................................................................................39

ABOUT YOUR WATER HEATER

Product Application

This water heater is designed for use in a single family domestic dwelling

for the purpose of heating potable water. Its use in an application other

than this may shorten its life.

Warning: This water heater is only intended to be operated by persons

who have the experience or knowledge and capabilities to do so. This

water heater is not intended to be operated by persons with reduced

physical, sensory or mental capabilities i.e. the infirm, or by children.

Children should be supervised to ensure they do not interfere with the

water heater.

Model Type

This Aquamax

water heater is a 5 star permanent pilot gas storage water

heater suitable for outdoor installation only. This water heater is not to be

used as a pool heater.

Water is stored in a vitreous enamel storage cylinder and heated by a gas

burner located under the cylinder. The heat produced by the burner is

transferred to the water through the base, top and side walls of the storage

cylinder with flue baffle rings capturing heat to improve efficiency. The gas

supply to the burner is controlled by a thermostat so that the water in the

storage cylinder is heated and then maintained at a constant temperature.

Automatic safety controls are fitted to the water heater to provide safe and

efficient operation.

Model Selection Chart

Model Name G270VE

(without mixing valve)

Model Number

G270VE-NG G270VE-LP

Note: All models can be supplied with a ‘Hard Water Anode’. These models

have the suffix ‘HWA’ at the end of the model number.

Legend

Gas Series

270

Rated first hour hot water delivery in Litres

Vitreous enamel storage cylinder

Natural gas

Propane gas

Mains Pressure Operation

This water heater is designed to operate at mains pressure by connecting

directly to the mains water supply. If the mains supply pressure in your area

exceeds that shown in ‘Mains Water Supply’ on page 23, a pressure

limiting valve must be fitted. The supply pressure should be greater than

350 kPa for true mains pressure operation to be achieved.

Hot Water Temperature

This water heater features a user adjustable thermostat located behind the

front access panel which controls the temperature of the stored water in

the storage cylinder. The thermostat is adjustable between 30 ~ 70°C

(factory setting approximately 60°C). Refer to ‘Temperature Adjustment’ on

page 8.

To meet the requirements of the National Plumbing Standard, the

temperature of the stored water must not be below 60°C.

Note: AS 3498 requires that a water heater provides the means to inhibit

the growth of legionella bacteria in stored potable water. This water heater

can satisfy this AS 3498 requirement provided it is operating and the

thermostat setting is set at 60°C or higher.

High Hot Water Temperature Increases the Risk of Scald Injury

Warning: This water heater can deliver water at temperatures which

can cause scalding. Always check the water temperature before use, such

as when entering a shower or filling a bath or basin, to ensure it is suitable

for the application and will not cause a scald injury. Aquamax recommends

monthly temperature checks to ensure the appropriate temperature is

maintained within the hot water heater.

Aquamax recommends, and it may also be required by regulations, that a

secondary device such as an approved temperature limiting device or anti-

scald water shut off valve be fitted into the hot water pipe work to the

bathroom(s) and ensuite(s) if persons living in the house require additional

safety protection from potential scalding. This will keep the hot water supply

temperature to the bathroom(s) and ensuite(s) below 50°C which will

reduce the risk of scald injury whilst still allowing hotter water (60°C+) to the

kitchen and laundry.

For new hot water installations, all sanitary outlet fixtures used primarily for

personal hygiene purpose must deliver hot water not exceeding 50°C. This

temperature limit is not mandatory for kitchen sinks and laundry tubs and

the preferable temperature setting for these outlets should be 60°C.

To minimise scalding, especially for those people in high scald risk

categories i.e. young children, people with potentially incapacitating

medical conditions, elderly people etc, this water heater must be installed in

accordance with AS/NZS 3500.4.

For early childhood centres, primary and secondary schools, nursing

homes or similar facilities for young, aged, sick or disabled persons, please

consult your local health authority for the correct temperature setting.

Lighting the Water Heater

Safety Warnings

For your safety, read the following warnings before attempting to light the

water heater:

Warning: This water heater is designed to operate reliably and safely

as long as the operating instructions are followed exactly. You must comply

with these lighting instructions at every stage.

Warning: Ensure the water heater is filled with water and the water

supply is turned on otherwise serious damage to the storage cylinder and

water heater components may occur.

Warning: After installation and before lighting the water heater, the

qualified installer must check all gas connections for leaks. The qualified

installer must also test the gas inlet (supply) pressure and burner gas

pressure.

Warning: Use only your hand to turn the gas knob, never use tools. If

the gas knob will not turn by hand, do not try to repair it, call a qualified

service technician. Force or attempted repair may cause a fire or

dangerous situation.

Warning: Do not attempt to operate this water heater if it has been

damaged. Call a qualified service technician.

Warning: This water heater is equipped with a ‘Piezo’ push button

igniter which lights the pilot. There is no need for matches to light the water

heater. When lighting the pilot, follow these instructions exactly.

Lighting Instructions

1. Stop. Read ‘Safety Warnings’ on

page 5.

2. Remove single screw retaining

access panel and lift out access

panel.

3. Slightly depress gas knob and rotate

fully clockwise so that the white dot

‘‘ aligns with the gas knob position

indicator on the gas control body (off

position).

4. Before lighting: Ensure there is no

smell of gas around vicinity of water

heater and burner opening. Be sure

to smell next to ground level as

some gases can settle there.

If you do not smell gas proceed to step 5.

If you do smell gas do not try to light the water heater. If the gas smell

is still present after five (5) minutes, turn off the isolation valve on the

gas supply line to the water heater, leave the area and call Aquamax

Service or a qualified service technician.

5. Depress gas knob slightly and rotate anticlockwise to the red star ‘ ’

(pilot) position.

6. Depress gas knob fully (until red star disappears below housing) and

hold in the depressed position. After twenty (20) seconds, whilst

keeping gas knob depressed, repeatedly press and release the igniter

button for up to forty (40) seconds or until the pilot flame ignites (igniter

is a red button located below and to the right of the gas control).

Warning: Keep your face clear of combustion chamber opening

while operating igniter button.

If pilot ignites, proceed to step 7.

If pilot does not ignite, release gas knob, wait five (5) minutes for any

unburnt gas to escape then begin again from the beginning of step 6.

Note: It is not possible to depress the gas knob fully if the gas control

has activated its safety shut off feature. In this case, wait five

(5) minutes for the gas control to reset (this allows for any unburnt gas

to escape).

7. Hold gas knob in depressed position for a further twenty (20) seconds

and then release.

8. Depress gas knob slightly and rotate anticlockwise to the red line ‘l’

(ignition) position and hold in this position for five (5) seconds.

9. Release gas knob (gas knob will return to the red flame ‘ ’ (on)

position automatically) and listen for burner noise.

10. If burner ignites, proceed to step 11.

If burner fails to ignite, depress gas knob slightly and rotate gas knob

to the white dot ‘‘ (off) position. Wait five (5) minutes for any unburnt

gas to escape and then begin again from step 5.

Warning: Failure to wait five (5) minutes may result in a fire or

dangerous situation.

11. When the burner remains alight with the gas knob released, rotate

temperature adjustment dial so that ‘4’ aligns with the temperature dial

position indicator on the gas control body. This is the recommended

(and factory default) setting which will provide a water temperature of

approximately 60°C. Rotate adjusting dial past this position if a higher

temperature is required. Refer to ‘Temperature Adjustment’ on page 8

for dial position indicative temperatures.

Note: To comply with the requirements of AS 3498 and to inhibit the

growth of Legionella bacteria, the thermostat setting must be set at

60°C or higher.

Warning: Hotter water increases the risk of scald injury.

12. Replace front access panel.

The main burner will now automatically ignite when heating is required and

extinguish when the water in the storage cylinder has been heated to the

set temperature. If the main burner does not light at the selected setting,

the water may already be at the selected temperature.

Note: Never press igniter button whilst gas knob is in other than the red

star ‘ ’ (pilot) position.

Shut Down Procedure

To view the gas control components described in this procedure refer to the

‘Lighting Instructions’ diagram on page 6.

1. Remove front access panel by following step 2 of ‘Lighting

Instructions’ on page 6.

2. Depress gas knob slightly and rotate gas knob clockwise so that the

red star ‘ ’ aligns with the gas knob position indicator on the gas

control body (pilot position). This setting will leave the pilot flame

alight, however the main burner will not be able to ignite.

Note: To reinstate the burner from the red star ‘ ’ (pilot) position,

depress gas knob slightly and rotate anticlockwise to the red line ‘l’

(ignition) position. Hold in this position for five (5) seconds then

release the gas knob. The gas knob will return to the red flame ‘ ’ (on)

position automatically and the burner will ignite when heating is

required and extinguish when the water in the storage cylinder has

been heated to the set temperature. If the main burner does not light

at the selected setting, the water may already be at the selected

temperature.

3. Replace front access panel or to completely shut down the gas

control, perform steps 4 and 5.

4. Depress gas knob slightly and rotate clockwise to the white dot ‘‘

(off) position. This setting shuts the gas control down completely.

Note: To reinstate the gas control and burner from the white dot ‘‘

(off) position, follow the ‘Lighting Instructions’ on page 6.

5. Replace front access panel.

Note: When switched back on from the red star ‘ ’ (pilot) position or white

dot ‘‘ (off) position, the water heater may take up to an hour to reheat.

Temperature Adjustment

Warning: AS 3498 requires that a water heater provides the means to

inhibit the growth of Legionella bacteria in potable water. This water heater

can satisfy this AS 3498 requirement provided it is operating and the

thermostat setting is 60°C or higher.

Thermostat Adjustment – All Models

The thermostat controls the stored water temperature.

The thermostat automatically controls the gas supply to the burner so that a

constant water temperature is maintained within the storage cylinder. The

thermostat is fully automatic and the burner only operates when the water

in the storage cylinder requires heating. There is no need to switch the

water heater off when it is not in use, except when you are going away for

an extended period.

The temperature adjustment dial is on the front of the gas control located

behind the front access panel of the water heater (refer to the diagram in

‘Lighting Instructions’ on page 6). The adjustment dial is marked with

numerals with each number representing a temperature difference of

approximately 10°C. When aligned with the temperature dial position

indicator on the gas control body, the dial setting corresponds

approximately to the following temperatures:

Dial Setting 1 2 3 4 5

Temperature 30°C 40°C 50°C 60°C 70°C

To adjust the thermostat:

1. Remove front access panel by following step 2 of ‘Lighting

Instructions’ on page 6.

2. Rotate temperature adjustment dial anticlockwise to increase or

clockwise to decrease the stored water temperature.

Warning: Hotter water increases the risk of scald injury.

3. Replace front access panel.

Other Important Information

Going Away?

If you plan to be away from home for one or two nights, we suggest you

leave the water heater switched on. However, if you plan to stay away

more than a few nights, the gas knob can be set to the red star ‘ ’ (pilot)

position to conserve energy (follow steps 1~ 3 of ‘Shut Down Procedure’ on

page 8).

Note: When switched back on, the water heater may take up to an hour to

reheat.

Safety

This water heater is supplied with a thermostat, an over temperature cut

out, a thermocouple and a combination pressure temperature relief valve.

These devices must not be tampered with or removed. The water heater

must not be operated unless each of these devices are fitted and are in

working order.

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