14
Operation Manual - Dux
Endurance Continuous Flow Hot Water
®
GENERAL INSTALLATION INSTRUCTIONS
REGULATIONS
This appliance must be installed in accordance with:
• Current AS/NZS 3000, AS/NZS 3500 and AS/NZS 5601
• Dux Installation Instructions
• Local regulations and municipal building codes including local OH&S requirements
Installation, Service and Removal MUST BE by an Authorised Person only.
APPLICABLE MODELS
These Installation Instructions apply only to the Dux Endurance Continuous Flow Water Heater
models listed on page 6.
APPLIANCE LOCATION
This appliance is designed for ‘Outdoor’ Installation only. As such, it must be located in an above
ground open air situation with natural ventilation, without stagnant areas, where gas leakage and
products of combustion are rapidly dispersed by wind and natural convection.
This appliance must be mounted on a vertical structure with the water and gas connections on the
underside pointing downwards. For appliances installed on elevated structures or under floors specific
requirements apply. Refer to AS/NZS 5601 Section 6 for details.
This appliance must not be used as a domestic spa or swimming pool heater.
Location of the appliance flue terminal must be in accordance with Section 6 and Figure 6.2 of
AS/NZS 5601. Figure 6.2 is reproduced in the ‘Horizontal Flue Terminal Clearances’ section of these
instructions. Note that AS/NZS 5601 was current at the time of printing but may have been
superseded. It is the installers’ responsibility to ensure current requirements are met.
This appliance must be placed as close as practicable to the most frequently used hot water outlet or
outlets to minimise the delay time for hot water delivery. For installations where the distance between
the water heater and the outlets is considerable, a flow and return system or the Dux Readyhot system
can be used which minimise the waiting time for hot water delivery.
Alternatively, multiple appliances can be strategically placed to serve outlets with minimal delay time.
Contact Dux for further information.
An AC240V, 10 Amp, earthed power point must be provided adjacent to the appliance. For outdoor
installations this power point must be weather proof. It must be clear of the gas and water connections
to the appliance and also the flue exhaust and water pressure relief valve. The power cord of the
appliance is 1.5 Metres long.
All appliances must be installed to ensure access can be gained without hazard or undue difficulty for
inspection, repair, renewal or operational purposes. Sufficient clearances shall allow access to, and
removal of, all serviceable components. Appliances should not be mounted higher than 2.5 metres
above the ground or floor level unless the customer can arrange permanent and safe access or can
provide another means of access, for example, by means of scissor or boom lifts acceptable to local
authorities.
PIPE SIZING
See Table 1 page 16 for appliance gas consumption. If the gas pipe sizing is insufficient the customer
will not get the full performance benefit. Gas pipe sizing must consider the gas input to this appliance
as well as all the other gas appliances in the premises. The gas meter and regulator must be specified
for this gas rate. An approved sizing chart such as the one in AS/NZS 5601 should be used.
Water pipe sizing and layout should be performed in accordance with AS/NZS 3500. All hot water
pipe-work should be insulated to optimise performance and energy efficiency.
WATER SUPPLY
See Table 1, page 16 for applicable water pressures. Approved pressure limiting valves may be
required if the ‘Maximum’ rated water supply pressures in Table 1 are exceeded. To achieve the rated
flow, the ‘Minimum’ water supply pressures in Table 1 must be supplied. The water heaters will
operate at lower pressures but will not achieve the rated flow. Contact Dux for ‘gravity fed’ or ‘low
pressure’ installations.
Water chemistry & impurity limits are detailed in separate Warranty booklet. Most metropolitan water
supplies fall within the requirements. If you are unsure about your local water quality, contact your
water authority. If sludge or foreign matter is present in the water supply, a suitable filter or strainer
should be incorporated in the water supply to the water heater.
