The instructions for recharging could possibly be a bit clearer as it doesn't specifically state that the T&PRV should be left opened until all the water has ceased draining from it. Presumably the water cannot be seen draining into the tundish since they mention gurgling.
Also interesting to see that the bubble only lasts 6 to 8 weeks (post #1) "without" the baffle.
"To recharge the air volume:-
Turn off the heat source to the cylinder via programmers / immersion isolation switch(es).
Turn off the water supply to the cylinder by turning off the isolating valve on the 3 bar pressure reducing valve if fitted at this point or at the 8 bar pressure relief valve if fitted there. Turn the handle so that it lies at 90° to the direction of flow. See figure 17 page 27.
Open the lowest hot tap.
Hold open the temperature / pressure felief valve until water ceases to run from the tap and gurgling noise at the valve stops.
Close the temperature / pressure relief valve.
Turn on the isolating valve at the cold water combination valve by turning the handle so it lies parallel to the direction of flow, when water flows from the hot tap, close tap.
The air volume will be automatically recharged as the unit refills. If after following the above actions water still discharges from the expansion relief valve, further advice should be sought from a competent installer or the Megaflo service department."
Also interesting to see that the bubble only lasts 6 to 8 weeks (post #1) "without" the baffle.
"To recharge the air volume:-
Turn off the heat source to the cylinder via programmers / immersion isolation switch(es).
Turn off the water supply to the cylinder by turning off the isolating valve on the 3 bar pressure reducing valve if fitted at this point or at the 8 bar pressure relief valve if fitted there. Turn the handle so that it lies at 90° to the direction of flow. See figure 17 page 27.
Open the lowest hot tap.
Hold open the temperature / pressure felief valve until water ceases to run from the tap and gurgling noise at the valve stops.
Close the temperature / pressure relief valve.
Turn on the isolating valve at the cold water combination valve by turning the handle so it lies parallel to the direction of flow, when water flows from the hot tap, close tap.
The air volume will be automatically recharged as the unit refills. If after following the above actions water still discharges from the expansion relief valve, further advice should be sought from a competent installer or the Megaflo service department."
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