Dux 135ZB4N Manuale d'uso - Pagina 12
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The operation of the water heater must be
tested by the installer. This work must only
be done by a licensed tradesperson.
Test for Leaks:
Check the water inlet, water outlet and gas
inlet pipe work and connections for leaks.
Test the Gas Inlet Pressure:
For correct operation of the water heater,
the gas inlet pressure must be at least:
Natural Gas
Propane
To test the gas inlet pressure, follow the
procedure below. If the pressure is less
than the above value, there could be a
problem with the gas meter or supply
pipe size.
1. Ensure the water heater has been
filled with water and the gas isolation
valve is turned off.
2. Remove the lower of the two hex
head screws on the right hand side
of the gas control valve and fit a
manometer to the spigot.
3. Turn on the gas isolation valve and
light the water heater. See Lighting
the Water Heater on page 8.
4. If necessary, adjust the control knob
until the main burner lights.
5. With the main burner alight, measure
the pressure.
6. Turn the thermostat knob to the "•"
(off) position and turn off the gas
isolation valve.
7. Disconnect the manometer and
replace the screw removed at
step 2.
10
Owner's Manual – Prodigy 4 & 5
Testing
1.13 kPa
2.75 kPa
Test the Gas Test Point Pressure:
For correct operation of the water heater,
the gas test point pressure must be
within 5% of the value marked on the
compliance plate.
4 Star: To test the gas test point
pressure, follow the same
procedure used for the gas inlet
pressure except that the upper of
the two hex head screws is to be
removed at step 2.
5 Star: To test the gas test point
pressure, follow the same
procedure used for the gas inlet
pressure except that the M4
button head screw on the right
hand side of the relay valve is to
be removed at step 2. A 2.5mm
allen key is supplied with the
water heater for this purpose.
If the pressure is not within 5% of the
marked value, contact Dux After Sales
and Service for advice.
Final Checks:
•
Turn on the gas isolation valve and
light the water heater.
•
Make sure there are no gas leaks
from either of the two screws
removed during gas pressure testing.
•
Set the gas control knob to position
"6" unless hot water is not required.
•
Replace the access cover.
•
Hand this manual to the occupier of
the premises and explain the lighting
procedure if required.
H3109
3109
Rev. L