LIGHTING THE WATER HEATER
45
BURNER PRESSURE ADJUSTMENT
•
Switch off the electrical supply at the isolating switch.
•
Attach a manometer to the test spigot at side of gas control.
•
Switch on the electrical supply at the isolating switch.
•
Check the gas pressure (refer to data plate).
•
If necessary adjust the regulator under the cap on top of the gas control. Access to the regulator is made
available from behind the blue ignition control module.
TEMPERATURE CONTROL
HOTTER WATER INCREASES THE RISK OF SCALD INJURY
This water heater can deliver water at temperatures which can cause scalding.
It is necessary and we recommend that a temperature limiting device be fitted between the water heater and
the hot water outlets in any ablution and public areas such as bathrooms, ensuites or public amenities, to
reduce the risk of scalding. The installing plumber may have a legal obligation to ensure the installation of this
water heater meets the delivery water temperature requirements of AS/NZS 3500.4 so that scalding water
temperatures are not delivered to a bathroom, ensuite, or other ablution or public area.
RECIRCULATION SYSTEM
Where the installation involves close temperature
control for any purpose, or the installation is
providing water above 80°C, it is
essential
to install
a circulating pump. All valves and associated
equipment must be suitable for safe operation up to
the maximum thermal discharge temperature of the
temperature pressure relief valve, i.e. 99°C.
Where water is required at a sanitising temperature
of 82°C for dishwashing or air conditioning
applications, the following installation is strongly
recommended:
1. A recirculation pump must be fitted.
2. The pump must be capable of withstanding working pressures greater than 1000 kPa and be constructed
of materials corrosion resistant to hot water.
3. The pump should be installed with a full flow service valve on each side of it.
4. A non-return valve should be fitted in the recirculation line to prevent back flow of hot or cold water.
5. Length of branch lines off the main recirculation line should be kept to a minimum.
6. The installation of gas, electric and water services must com
ply with all relevant local Authorities’
regulations.
7. The cold water supply pressure or the setting of the pressure limiting valve must not exceed the working
pressure of the pump.
