Megaflo Eco SystemFit 145SF Indirect Unvented Hot Water Cylinder
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Description
The Megaflo Eco SystemFit 145SF 145L Indirect Unvented Hot Water Cylinder is designed for homes using a compatible heat-only (regular) boiler. Combining Megaflo Eco cylinder technology with factory-fitted plumbing and electrical components, it helps simplify installation, reduce on-site assembly and create a neat, integrated hot water system.
With a 145-litre capacity, high-grade duplex stainless steel inner vessel and 60mm CFC/HCFC-free polyurethane insulation, the SystemFit 145SF is designed to provide efficient hot water storage and dependable performance. Its integrated pump, motorised valves, wiring centre and internal floating baffle expansion vessel help reduce the need for separate components during installation.
At a Glance
About the Megaflo Eco SystemFit 145SF
The Megaflo Eco SystemFit 145SF is an indirect unvented hot water cylinder designed to work with a compatible heat-only boiler. Unlike a standard cylinder installation where multiple components may need to be sourced and fitted separately, the SystemFit model comes with key plumbing and electrical components factory-fitted.
The cylinder includes three 22mm two-port motorised valves for central heating zones 1 and 2 and domestic hot water, alongside a Grundfos UPM3 Auto L 25-70 primary circulation pump, wiring centre and automatic differential bypass valve. Its internal floating baffle expansion vessel is integrated into the cylinder shell, removing the need for a separate domestic hot water expansion vessel.
Key Features
1. 145-Litre Hot Water Storage
Provides 145 litres of stored hot water for suitable domestic installations using a compatible heat-only boiler.
2. Factory-Fitted Plumbing and Wiring
Includes pre-fitted motorised valves, a wiring centre, circulation pump and other key system components to help streamline installation.
3. Duplex Stainless Steel Vessel
Constructed with a high-grade duplex stainless steel inner vessel for hot water storage.
4. Integrated Expansion Vessel
The internal floating baffle expansion vessel is built into the cylinder shell, so a separate domestic hot water expansion vessel is not required.
5. Insulated for Heat Retention
Features 60mm CFC/HCFC-free polyurethane foam insulation and a stated standing heat loss of 1.18 kWh per 24 hours.
6. Integrated Heating Zone Control
Three factory-fitted 22mm two-port motorised valves support control of two central heating zones and domestic hot water.
Installation and Safety
This is an unvented hot water cylinder. Installation, commissioning and servicing must be carried out by a suitably qualified and competent installer in accordance with the manufacturer's instructions and applicable regulations. Check the available installation space, incoming water supply and compatibility with the existing heating system before purchase.
Factory-Fitted Components
The Megaflo Eco SystemFit 145SF is supplied with the following components fitted to the cylinder:
- One 3kW immersion heater with thermal controls, featuring a Superloy 825 alloy-sheathed element and pre-wiring.
- Temperature and pressure relief valve set at 90°C / 10 bar, with insulation kit and 15/22mm tundish.
- 8 bar pressure relief valve incorporating a check valve.
- Drain valve and wiring centre.
- Three 22mm two-port motorised valves for central heating zone 1, central heating zone 2 and domestic hot water.
- Grundfos UPM3 Auto L 25-70 primary circulation pump.
- Lockshield flow balancing valve.
- Automatic differential bypass valve.
- Internal floating baffle expansion vessel integrated into the cylinder shell.
Included with the Cylinder
- Cold water inlet control kit rated at 3 bar (0.3 MPa), incorporating a pressure reducing valve, strainer and check valve.
Product Specifications
| Brand / Range | Megaflo Eco SystemFit |
| Model | 145SF |
| Product Type | Indirect unvented hot water cylinder |
| Boiler Compatibility | Heat-only (regular) boiler |
| Nominal Capacity | 145 litres |
| Height | 1229mm |
| Width | 630mm |
| Depth | 720mm |
| Weight Empty / Full | 48kg / 203kg |
| Inner Vessel Material | High-grade duplex stainless steel |
| Insulation | 60mm CFC/HCFC-free polyurethane foam |
| Standing Heat Loss | 1.18 kWh/24h |
| ErP Rating | B |
| 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 |
| Maximum Flow at 3 bar | 76 l/min |
| Maximum Flow at 1 bar | 45 l/min |
| Heat-Up Time | 24 minutes (15 l/min, 80°C primary, 15°C to 60°C) |
| Recovery Time at 70% Draw-Off | 17 minutes |
| Backup Immersion Heater | 1 × 3kW at 240V |
| Product Code | 95050451 |
Who Is This Product Suitable For?
- Domestic properties with a compatible heat-only or regular boiler.
- Homeowners replacing an existing indirect unvented hot water cylinder.
- Installations where factory-fitted plumbing and wiring can help simplify system installation.
- Heating systems requiring two central heating zones and a dedicated domestic hot water zone.
- Installations where the available cupboard or plant-room space accommodates the cylinder's dimensions.
Frequently Asked Questions
1. What is the Megaflo Eco SystemFit 145SF?
It is a 145-litre indirect unvented hot water cylinder designed for use with a compatible heat-only boiler. It includes factory-fitted plumbing and electrical components to help simplify installation.
2. What is the difference between SystemFit and a standard Megaflo Eco cylinder?
The SystemFit version includes a range of factory-fitted components, including a circulation pump, motorised valves and wiring centre. This can reduce the amount of separate component fitting required on site.
3. Does this cylinder include an immersion heater?
Yes. It has one factory-fitted 3kW immersion heater with thermal controls, specified for 240V operation.
4. Does it require a separate domestic hot water expansion vessel?
No separate domestic hot water expansion vessel is required because the cylinder incorporates an internal floating baffle expansion vessel within its shell.
5. What are the dimensions of the Megaflo Eco SystemFit 145SF?
The stated dimensions are 1229mm high, 630mm wide and 720mm deep. Allow additional space where required for connections, servicing and installation access.
6. What is the ErP energy rating?
The supplied product specifications list the Megaflo Eco SystemFit 145SF as ErP B rated.
7. Who should install this unvented cylinder?
Installation and commissioning should be completed by a suitably qualified and competent installer in accordance with the manufacturer's instructions and applicable regulations.
Shop the Megaflo Eco SystemFit 145SF
Choose the Megaflo Eco SystemFit 145-litre indirect unvented cylinder for an integrated hot water solution with factory-fitted plumbing and wiring components.
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