Although it sounds fun, ‘megaflow' is not actually a type of boiler – the technical name for these high-pressure machines is ‘
unvented hot water cylinder
‘. A company called Heatrae Sadia manufacture an unvented hot water cylinder called a Megaflo, which is how this confusion all started.
Can you use a combi boiler with a Megaflow?
You (or should I say a qualified person) can fit an
unvented
H/W cylinder to a combi boiler. It can be done in exactly the same way as a conventional system. ie using motor valves and thermostats.
What is a Megaflow boiler system?
A Megaflo (also known as a Megaflo system, Megaflo unvented system, or often misspelt as “Megaflow system” or “Megaflow boiler”) is
a stainless steel unvented cylinder that stores hot water as part of a central heating system
. … In some homes, you'll have a switch by your cylinder should your boiler fail.
Do I need a Megaflow?
A Megaflo tank would be needed if:
If you often run up to 3 baths and a shower at once
. If you have over a 16 litres per minute flow rate. High water pressure is demanded.
How often does a Megaflo need recharging?
With just a handful of external controls, there is little to go wrong. However, the internal air gap needs recharging regularly. This is a reasonably straightforward process and should be carried out
at least annually
. An indication that the air gap needs charging is a visual warning via the Tundish.
Do you need a boiler with a Megaflow?
In fact,
a Megaflow technically isn't a boiler at all
. It's a water tank or cylinder made of stainless steel that heats water. Water from the mains feeds into the cylinder and is kept at mains pressure. … A Megaflow system only heats water and doesn't heat radiators.
Can you use a combi as a system boiler?
What is involved? Firstly, the combi boiler
has to be removed
, and the system boiler fitted in the same location – this switch can take up to one day. Then, the unvented cylinder has to be fitted in a cupboard or attic space.
Does Megaflo increase water pressure?
Accumulators, Pump Sets and Water Boosting – Increasing cold water pressure and flow. A very common misunderstanding, by both customers and installers, is that a Megaflo system will create a high pressure (and high performance) water system. This is incorrect. –
a Megaflo (or unvented) system does not create pressure.
Is a Megaflow noisy?
The Cons of A Megaflow Cylinder
Because you'll be using the main water supply for your system, you wouldn't have backup storage of cold water. The system needs water pressure from your main water supply pushing through it to ensure it delivers hot water. …
The high velocity of water flowing within the pipes can be noisy
.
Which is best system boiler?
Ideal Logic Max System
Boiler. Vaillant ecoTEC Plus 624 System Boiler. ATAG i24S System Boiler. Worcester Bosch Greenstar 24i System Boiler.
Can a Megaflow go in the loft?
As the Megaflo or Unvented system is pressurised, it
can be sited virtually anywhere
; it does not rely on a header tank to provide a head of pressure. Common locations are within an airing cupboard, a downstairs cupboard, utility room, loft, garage or basement.
How long does a Megaflow last?
Megaflo cylinders are a great fit for homes with high hot water demand. There is a good
warranty of 25 years
for peace of mind, and the system as a whole pumps hot water efficiently to your hot water outlets – you won't freeze in the shower if someone puts on the tap in another part of the house.
What should the pressure be on my Megaflow?
Most manufacturers recommend a minimum supply pressure of
1.5 bar
, and 20 l/m flow rate.
Why is the pressure on my boiler high?
Boiler pressure is controlled by the expansion vessel, the balance of air versus water in your central heating system.
Too little air in your expansion vessel and the pressure may become too high
. … This is why it's important that the installer work out the cause of your boiler's high pressure.
How do I increase my Megaflo pressure?
A shower power booster
can boost the supply pressure to or from a megaflo or any other unvented system. Unlike traditional power showers the shower power booster is designed to withstand water at 85 Degrees centigrade and can withstand a sustained pressure of 4 bars without failure.
How do you increase the water temperature on Megaflow?
On the front of your megaflo you should see a
grey boxs undo the screw
and you should see at the top an object with 1to5 just above it. Thats where you adjust the temp.
