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7.4 OPERATIONAL FAULTS
Operational faults and their possible causes are detailed in Section 9.3. It is recommended that
faults should be checked by a competent installer.
The air volume within the Megaflo unit will periodically require recharging to ensure any
expanded water is accommodated within the unit. A discharge of water INTERMITTENTLY from
the Expansion Relief Valve will indicate the air volume has reduced to a point where it can no
longer accommodate the expansion. To recharge the air volume :-
i)
Turn off the heat source to the cylinder via programmers/immersion isolation switch(es).
ii) Turn off the water supply to the Megaflo unit by turning off the isolating valve on the Cold
Water
Combination Valve. Turn the black handle so that it lies at 90
o
to the
direction of flow.
iii) Open the lowest hot tap supplied by the Megaflo.
iv) Hold open the Temperature/Pressure Relief Valve until water ceases to run from the tap
and
gurgling noise at the valve stops.
v) Close Temperature/Pressure Relief Valve.
vi) Turn on the isolating valve at the Cold Water Combination Valve by turning the black
handle so it
lies parallel to the direction of flow, when water flows from the hot
tap, close tap.
vi) The air volume will be automatically recharged as the unit refills.
User Instructions
