17
TUDOR NHRE
It is important to ensure that all pipework is flushed to avoid the damage that foreign particles could
do to control valves, this is particularly important where installation is unvented.
1)
Open all outlet taps.
2)
Turn on water supply and allow the water heater to fill.
3)
Close taps in turn after having purged the system of air.
4)
Check for water leaks around the appliance and in particular around any valves or controls.
Check again when the appliance is hot.
5)
Check that no water is passing to waste through any relief valves.
6)
Test the operation of any temperature and pressure relief and expansion valves by lifting/turning
the manually operated test lever/cap and observing that water flows freely and safely to waste.
7)
Check that the discharge pipe is installed so that it falls continuously and that no taps, valves or
other shut off devices are installed in the pipe.
8)
Turn on the power supply & the appliance on/off switch - ensure protech system green
lamp illuminates.
9)
The burner system should be commissioned by a competent Gas Engineer see section 20.
10)
Demonstrate operation to the user including the purpose and operation of any temperature and
pressure relief valve or expansion valve and what to do if these valves should self operate.
11)
Hand over this manual to the user for future reference and advise that periodic checks of the
equipment are essential for safety.
Advise that any expansion vessel in an unvented application may need to be recharged
periodically by the installer.
Unvented system controls periodic checks must include:
a)
Check and clean the line strainer.
b)
Check pressure in expansion vessel and top up as necessary. Must be set 3.5 bar. Check should
be carried out with expansion vessel drained of water to avoid that you cross-read system water
pressure.
c)
Check manually by lifting the test lever on the temperature and pressure relief valve.
d)
Check manually by turning the test knob on the expansion relief valve.
e)
Check discharge pipes from both relief valves to ensure no obstructions.
18.8 filling the water heater/
commissioning the water system
Summary of Contents for TUDOR NHRE 18
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