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CONDENSATE DRAIN
28
SUMP ADAPTOR
PIPE RETAINING
CLIP
SEALED WATER SYSTEM
6.8
a)
Check the operation of the pressure relief valve as described in
section 5.1.
b)
Check the correct operation of the pressure gauge by noting the
reading when cold and check that the pressure increases with
temperature. Replace the gauge if readings are suspect.
c)
Check that the system is at its original (cold) design pressure. If
necessary, re-pressurise the system as described in section 5.1 and
search for and rectify any leaks causing loss of water.
d)
In case of heavy pressure fluctuations during the heat and cool down
cycle, check the pre-charge pressure of the expansion vessel. If the
air pressure is less than 0.75 bar recharge vessel with an air pump.
RE-ASSEMBLY & RE-COMMISSIONING
6.9
a)
Re-assemble all components in reverse order.
b)
Check that all joints and seals are correctly fitted.
c)
Turn on the gas and electricity supply and light the appliance, as
described in section 5.2.
d)
Re-perform a combustion check, as described in section 6.1.
e)
Check the operation of the appliance in both CH and DHW modes as
applicable.
f)
Remove the manometer and tighten the inlet pressure test point
sealing screw.
g)
Test for gas tightness.
FINAL CHECKS
6.10
a)
Ensure the fascia panel into the upright position and secure with
the two screws.
b)
Re-fit the front casing panel.
c)
Return all appliance and external controls (if fitted) to their original
settings.
FLOW TUBE
LOCK NUTS
TRAP TUBE
CONDENSATE
DRAIN
DRAIN SUMP CAP
MAINS COLD INLET
CONICAL FILTER
SEALING WASHER
FLOW REGULATOR
FLOW TURBINE
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751030 MANUAL (NEW) 21/9/10 08:43 Page 36
