300 Litre Capacity
Indirect System
ERP Class C
Kiwa Approved
300L
Nominal capacity
76 L/min
Maximum flow at 3 bar
39 min
Full coil heat-up
60mm
CFC-free insulation
Applications & suitability
Large Residential Homes
300 litre capacity makes this cylinder suitable for large 5+ bedroom homes with high hot water demand.
HMOs
High-capacity hot water storage and high flow performance make it suitable for shared residential properties.
Commercial Properties
Designed for properties where substantial hot water storage and high flow rates are required.
Boiler-Heated Systems
Indirect operation allows the cylinder to be heated via a compatible system or heat-only boiler.
Key specifications
| Specification |
Value |
| Nominal capacity |
300 litres |
| Height |
2053 mm |
| Width × Depth |
579 × 600 mm |
| Weight empty |
58 kg |
| Weight full |
358 kg |
| Standing heat loss |
1.69 kWh/24h (70 W) |
| Max flow at 3 bar |
76 l/min |
| Coil heat-up (15 l/min, 80°C primary) |
39 min |
| Recovery 70% draw-off |
27 min |
| Backup immersion |
1 × 3kW @ 240V |
| Operating pressure |
3 bar (0.3 MPa) |
| Max mains pressure |
16 bar |
| Connections |
22mm compression / ¾" BSP male |
| ERP energy class |
C |
| Product code |
7817130 |
Installation & compatibility
Indirect boiler heating: The Megaflo Eco Indirect 300L is designed to be heated via a system or heat-only boiler. Factory-fitted components include a T&P valve, 3 bar PRV, tundish, wiring centre and 2-port motorised valve to support installation. The internal floating baffle eliminates the need for an external expansion vessel.
Design & performance benefits
High Hot Water Flow
Provides up to 76 litres per minute at 3 bar for high-demand hot water applications.
Rapid Recovery
The indirect coil provides a 39-minute full heat-up from cold under the specified test conditions.
Duplex Stainless Steel
High-grade duplex stainless steel construction provides the inner tank material specified for this Megaflo Eco cylinder.
Insulated Construction
60mm CFC-free polyurethane foam insulation helps reduce standing heat loss, specified at 1.69 kWh/24h.
Additional installation features
Backup Immersion
Includes 1 × 3kW Superloy 825 backup immersion heater rated at 240V.
Factory-Fitted Controls
Supplied with factory-fitted T&P valve, 3 bar PRV, tundish, wiring centre and 2-port motorised valve.
Internal Floating Baffle
Internal floating baffle design means no external expansion vessel is required.
Ideal for
The Megaflo Eco Indirect 300L is ideal for large 5+ bedroom homes, HMOs and high-demand commercial properties requiring substantial hot water storage and high flow performance. With a 300 litre nominal capacity, 76 l/min flow rate at 3 bar, 39-minute coil heat-up, duplex stainless steel construction, 60mm insulation and factory-fitted installation components, it provides a high-capacity indirect hot water cylinder solution. The unit is Kiwa approved, ERP C rated, made in the UK and supplied with a 30-year inner tank warranty and 2-year product guarantee.
