The cylinder features a high-grade duplex stainless steel inner vessel with 60mm CFC/HCFC-free polyurethane foam insulation. Factory-fitted components include a pre-wired 3kW immersion heater with cylinder thermostat and high-limit overheat cut-out, T&P relief valve, tundish, wiring centre and 22mm 2-port motorised valve. An internal floating baffle expansion vessel is built into the cylinder shell, eliminating the need for a separate external expansion vessel.
170L Capacity
Indirect Unvented
1 × 3kW Immersion
ErP B
170 L Storage
Nominal 170-litre capacity for system boiler hot-water installations.
Factory Fitted
Key plumbing and electrical components are factory-fitted and pre-wired.
76 L/min at 3 bar
Specified maximum hot-water flow at 3 bar.
22-Min Heat-Up
Heat-up time of 22 minutes under the specified test conditions.
Applications & suitability
System Boiler Installations
Designed specifically for use with system boiler installations requiring stored domestic hot water.
New Installations
Factory-fitted plumbing and wiring can help streamline installation work and provide a neat finish.
Domestic Hot Water
The 170-litre cylinder provides stored mains-pressure hot water for domestic applications.
Space-Conscious Installation
579mm wide by 710mm deep, providing a defined footprint for installation planning.
Key specifications
| Nominal Capacity |
170 litres |
| Height |
1384mm |
| Width |
579mm |
| Depth |
710mm |
| Weight Empty / Full |
48 kg / 230 kg |
| Standing Heat Loss |
1.20 kWh/24h |
| Maximum Flow at 3 bar |
76 l/min |
| Maximum Flow at 1 bar |
45 l/min |
| Heat-Up Time |
22 min (15 l/min, 80°C primary, 15°C–60°C) |
| Recovery – 70% Draw-Off |
16 min |
| Backup Immersion |
1 × 3kW @ 240V |
| Operating Pressure |
3 bar (0.3 MPa) |
| Maximum Mains Pressure |
16 bar (1.6 MPa) |
| Minimum Recommended Supply Pressure |
1.5 bar / 20 l/min |
| Inner Vessel |
High grade duplex stainless steel |
| Insulation |
60mm CFC/HCFC-free polyurethane foam |
| ErP Rating |
B |
| Product Code |
95050499 |
Installation & compatibility
The Megaflo Eco SystemReady 170SB is supplied with key components factory-fitted, including the pre-wired immersion heater and thermal controls, T&P relief valve, tundish, wiring centre and 22mm 2-port motorised valve. The internal floating baffle expansion vessel is integrated into the cylinder shell, so no separate external expansion vessel is required.
The supplied cold water inlet control kit is fitted on site by the installer. Connections include the cold mains supply, hot-water distribution pipework, primary flow and return from the system boiler, compliant tundish discharge and a 230V electrical supply to the wiring centre. Installation should comply with applicable Building Regulations and manufacturer requirements.
Design & performance benefits
Factory-Fitted Plumbing
Key components are factory-fitted to help reduce installation work and provide a consistent finish.
Duplex Stainless Steel
High-grade duplex stainless steel forms the inner vessel construction.
60mm Insulation
CFC/HCFC-free polyurethane foam insulation supports effective heat retention.
Integrated Expansion Vessel
The internal floating baffle expansion vessel is built into the cylinder shell.
Additional installation features
Pre-Wired Immersion
1 × 3kW immersion heater with cylinder thermostat and high-limit overheat cut-out is pre-wired.
T&P & Tundish
Temperature and pressure relief valve and 15/22mm tundish are factory fitted.
Pre-Fitted Motorised Valve
A wiring centre and 22mm 2-port motorised valve are supplied pre-fitted and wired.
Ideal for
The Megaflo Eco SystemReady 170SB 170L Indirect Unvented Cylinder is ideal for system boiler installations requiring a high-quality stored hot-water solution with factory-fitted plumbing and electrical components. Its 170-litre capacity, 76 l/min maximum flow at 3 bar, integrated expansion vessel, 60mm insulation and ErP B rating make it a practical choice for domestic hot-water installations where installation efficiency and a neat finish are important.
