Megaflo Main is the new name for the Main unvented cylinder range. This model replaces the Main 210 Litre Direct Unvented Hot Water Cylinder (720636201).
The cylinder features a high-grade stainless steel inner vessel, 50mm CFC/HCFC-free polyurethane foam insulation and an 18-litre expansion vessel. With support for solar PV and off-peak electricity tariffs, the Megaflo Main 210L direct unvented cylinder offers a practical hot water storage solution for properties without access to mains gas.
210 Litre Capacity
Direct Unvented
2 × 3kW Incoloy 800 Immersions
25 Year Inner Vessel Warranty
Immersion Heating
2 × 3.0 kW
Standing Heat Loss
2.30 kWh/24h
Operating Pressure
3.5 bar
Applications & suitability
Larger Domestic Properties
The 210-litre capacity provides substantial hot water storage for larger homes and higher domestic hot water requirements.
Properties Without Mains Gas
Direct electric immersion heating makes the cylinder suitable for properties without access to mains gas.
Solar PV Systems
Suitable for properties looking to use stored hot water alongside solar PV-generated electricity.
Off-Peak Electricity
The direct immersion configuration can be used with off-peak electricity tariffs.
Key specifications
| Product Code |
7912286 |
| Type |
Direct Unvented |
| Nominal Capacity |
210 Litres |
| Height (A) |
1499 mm |
| Diameter |
Ø 550 mm cylinder / 595 mm base |
| Weight (Empty) |
40 kg |
| Immersion Rating |
2 × 3.0 kW @ 240V |
| Heat-Up Time |
215 mins |
| Standing Heat Loss |
2.30 kWh/24h |
| ErP Energy Rating |
C |
| Operating Pressure |
3.5 bar |
| Expansion Vessel |
18 Litre (Supplied) |
| Connections |
22mm Compression / ¾" BSP |
| Warranty |
25 Years Inner Vessel / 1 Year Parts & Labour |
Installation & compatibility
The Megaflo Main 210 Litre Direct Unvented Cylinder is supplied with an 18-litre expansion vessel, T&P relief valve, pressure reducing valve and factory-fitted controls. It uses 22mm compression / ¾" BSP connections and operates at up to 3.5 bar. The cylinder is suitable for direct electric heating and can be used with solar PV systems and off-peak electricity tariffs. Installation should follow the manufacturer's requirements and applicable unvented hot water system regulations.
Design & performance benefits
Dual Incoloy 800 Immersion Heaters
Two factory-fitted 3.0kW Incoloy 800 alloy immersion heaters provide direct electric heating at 240V.
Stainless Steel Inner Vessel
The high-grade stainless steel inner vessel is pressure tested to 15 bar.
50mm Polyurethane Insulation
Factory-injected 50mm CFC/HCFC-free polyurethane foam insulation helps minimise heat loss.
Rapid Recovery
The supplied specification provides a 215-minute heat-up time for the 210-litre cylinder.
Additional installation features
18 Litre Expansion Vessel
An 18-litre expansion vessel is supplied as part of the cylinder package.
Factory-Fitted Controls
Factory-fitted controls are supplied with the cylinder for the direct unvented system.
KIWA & G3 Compliance
KIWA approved and specified as compliant with Building Regulation G3, with CE marking.
Ideal for
Larger Homes
The 210-litre storage capacity is suited to larger domestic hot water requirements.
No Mains Gas Properties
Direct electric immersion heating provides a hot water option for properties without mains gas access.
Solar PV Installations
Suitable for hot water systems incorporating solar PV electricity generation.
Off-Peak Tariffs
The direct electric configuration is suitable for properties using off-peak electricity tariffs.
The Megaflo Main 210 Litre Direct Unvented Hot Water Cylinder – 7912286 combines 210-litre mains-pressure hot water storage with two 3.0kW Incoloy 800 immersion heaters, 50mm polyurethane insulation and an 18-litre expansion vessel. With a stainless steel inner vessel, KIWA approval, G3 compliance and a 25-year inner vessel warranty, it provides a practical direct unvented hot water solution for larger domestic properties.
