23
Operation Manual - Dux
Endurance Continuous Flow Hot Water
®
COMMISSIONING
TESTING
1.
Before final connection of the water heater purge gas, hot water and cold water supply lines.
Swarf in either the gas or water supplies may cause damage.
2.
Turn on gas and cold water supplies.
3.
Test for water leaks and gas escapes near the unit.
4.
Isolate gas supply. Remove test point screw located on the gas inlet connection and attach
pressure gauge.
5.
Turn the power 'on' at the power point socket and turn on gas.
6.
If water controllers are fitted, turn ensure they are controller 'ON', select the maximum delivery
temperature and open ALL available hot water taps including the shower. If remote controllers
are not fitted, simply open all available hot water taps. (CAUTION: Ensure building occupants do
not have access to hot water outlets during this procedure.)
7.
Operate ALL other gas appliances at their maximum gas rate, in accordance with manufacturers
instructions.
8.
With all gas appliances in operation at maximum gas rate, the pressure should read between
1.13 - 3.0 kPa on Natural Gas. On LPG the pressure should be 2.75 - 3.0 kPa. If the pressure is
lower, the gas supply is inadequate and the appliance will not operate to specification. It is the
Installers responsibility to check the gas meter, service regulator and pipe work for correct
operation/sizing and rectify as required. Note that the gas regulator on the appliance is
electronically controlled and factory pre-set. Under normal circumstances it DOES NOT need
adjustment during installation.
9.
Close hot water taps including the shower.
10. Inspect and clean the strainer located on the cold water inlet connection. This procedure may
need to be repeated to ensure the strainer remains clear, especially on new installations.
11. If water controllers are fitted, it is necessary to test their operation through the complete range of
functions (refer to the Operation sections of this manual).
12. Confirm the hot water delivery temperature(s) using a thermometer. If controllers are fitted,
ensure temperatures exceeding 50°C cannot be selected on bathroom or ensuite controllers.
Refer to the section ‘Delivery Temperature’ below for more details.
13. After testing is completed, explain to the householder the functions and operation of the water
heater and temperature controllers (if fitted). Ensure the “PRODUCT RECORDS” on page 25 of
this manual is filled in and that the booklet is handed to the customer.
DELIVERY TEMPERATURE
"50°C Compliant" appliances are 'factory set' to deliver a maximum temperature not exceeding 50°C.
However, they have an incremental adjustment mechanism that allows the installer to increase the
appliance delivery temperature incrementally from the 'Factory Set’ value to temperatures exceeding
50°C. This is intended to enable compensation for temperature losses in the pipe-work between the
water heater and any outlets and achieve the required temperature at the outlet. Instructions for
incremental temperature adjustment are located in the instruction pocket inside the appliance front
cover.
For all other models
Dux Endurance Continuous Flow Water Heaters are factory pre-set to various maximum delivery
temperatures depending on model and their intended application. For the majority of applications, the
factory pre-set temperature is appropriate. In the unlikely event it is not this setting can be increased
or decreased by the installer. Instructions for changing the maximum delivery temperature are located
in the instruction pocket inside the appliance front cover.
