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Unvented Controls(s)
Check controls as per the following:
1) Line strainer - with the water supply turned off remove screen from
str
ainer and clean of any detritus;
2)
Expansion vessel - with the water supply turned off and taps open, check
expansion vessel pressure and top up as necessary;
3) Temperature & pressure relief valve - with the water supply turned on,
check manually by lifting the test lever/turning the test knob (ensure valve
closes after testing)
;
4) Expansion relief valve - check manually by turning the test knob
(ensure
valve closes after testing)
;
5) Discharge pipes (D1) - from both temperature & pressure relief and
expansion relief valve for obstructions;
6) Tundish & discharge pipe (D2) - open either valve gradually to produce a
full bore discharge into tundish and D2 without an
y back pressure;
7) Pressure reducing valve - check that the correct outlet pressure is being
maintained by recording the pressure at an in-line terminal fitting i.e. tap.
Thermostats
Ensure that all thermostats adjusted for the correct temperature setting, this
should be between 60 and 65°C.
NOTE!
WHERE THERE IS A POSSIBILITY OF SCALE FORMING, IT IS RECOMMENDED TO ADJUST
THE THERMOSTAT TO BELOW
60
O
C
www.tradeplumbing.co.uk Call Sales On 08708034288
www.tradeplumbing.co.uk Call Sales On 08708034288