The Atmos Ephesus 24 solar thermal water heating system

  • The lowest cost solar thermal system in the UK

  • Generates up to 1,000 kWh per annum of renewable energy

  • Simple easy to understand controls

  • Suitable for Combi boilers or unvented cylinder

  • Self-contained: No extra hot water storage tank required in the house

  • No glycol: No extra internal pipework or expansion vessels

  • No circulation pump: Minimal maintenance and running costs

The Atmos Ephesus 24 solar thermal system

with prices starting from £825+VAT its the lowest cost evacuated tube system in the UK. Don’t miss out!

About the Atmos Ephesus

The Atmos Ephesus is a self contained evacuated tube solar thermal system which can be placed on a flat roof or ground mounted, or on a special platform. The evacuated tubes collect the solar energy, and transfer it into the 150 litre hot water tank by means of the heat pipe principle. The tubes are like long thermos flasks, which collect solar heat and retain it, transferring the heat into the cold water tank to generate hot water.

All in one system: Atmos Ephesus is an outdoor solar thermal system, there is no need for separate panels on the roof, and no need for a new tank in the building taking up unnecessary space. It all sits outside, and simply requires the cold water to be taken to the tank, and a return hot water pipe to your existing hot water appliance (Combi boiler or hot water cylinder).

Fully automated energy saving: The Atmos Ephesus is highly efficient,  and in warmer months when the solar heated water is above 50 deg C, the diverter valve by-passes the combi boiler or hot water tank and sends the hot water straight to the taps, so your boiler does not have to come on. For your protection a thermostatic mixer valve, adjustable to your preferred setting, makes sure that the hot water is delivered at a safe temperature.

Maintenance is simple: Most solar thermal systems use a heat transfer circuit between the collector and the tank. This requires a pump and a pipe circuit containing anti-freeze (glycol), a rather nasty smelling liquid as used in your car radiator. The Ephesus heats the water directly, so it has no glycol, no electric pump for circulation using expensive electrical energy, and needs very little looking after. The tubes like an occasional clean to keep them efficient and a wipe with a clean cloth is all it takes to keep them happy. The tank has a built in anode to protect against corrosion, which needs to be changed every 5 years.

Safe and clean: Water stored below 55°C requires protection from the risk of Legionella. The Atmos Ephesus system automatically self maintains to protect again this. A timer is provided so that at preset intervals the pump comes on and raises the tank to 60 degrees C, and any legionella bugs that may be hanging around are annihilated. In the summer months, the tank will frequently be above 60 degrees, so the thermostat conserves energy and will not turn the pump on unnecessarily.

Perfectly suited to cold UK temperatures: The Atmos Ephesus has no water in the tubes so they won’t freeze, and the tank is so well insulated that the heat loss is very small. To ensure the connecting pipework is protected a thermostat on the pipework keeps an eye on the weather, and if the temperature of the insulated connecting pipes drop below 5°C, a 12 volt dc pump automatically operates briefly to send warm water through the pipes and keeps them from freezing, and also to protect the tank from freezing.

What about overheating?: In the UK overheating is rarely a problem, but if no hot water is used in the summer for several days and there is a lot of sunshine, temperature can rise into the 90’s. The Ephesus 24 is provided with a pressure and temperature relief valve, so that should the tank temperature go above 90 deg it will release some of the hot water into the safety discharge pipe thus introducing cold water to cool the system down.

Technical specification

MODELEPHESUS 24
Frame Slope Angle22°
Absorber Tube TypeHeat Pipe
Tube Dimensions (mm)ø47×1930 24 pcs
Dimensions (mm)1225 H x 2200 W x 1825 D
Capacity (lt/day)150L
Inner Tank Material
and Coating
Enamelled Sheet
Titanium Enamel Coating
Net Weight 54kg (tank) 110kg (total)
Max Operating Pressure4 bar
Test Pressure6 bar
Gross Area (m2)3,4
Insulation50mm, 40 kg/m3 Polyurethane
(CFC Free)

Installation

The Atmos Ephesus 24 can be installed on the ground, on a flat roof, or on a platform. The support system is an easy to assemble tubular metal frame and the video below shows how to assemble the unit on the ground. The installer must hold certification for installation of unvented hot water systems.

In order to claim the Renewable Heat Incentive your Ephesus 24 system must be installed by an MCS accredited installer.

Pricing options

E24B: Standalone system for use without boiler

£825+vat
  • Ephesus 24 tube system including 150 litre hot water tank, unvented (mains pressure) kit and ground mounting frame
  • Solar rated thermostatic blending valve
  • 24 litre expansion vessel
  • Frost protection thermostat
  • 1.5kW 240V immersion heater and stat
  • Anti-legionella kit: Thermostat and timer for connection to internal integration immersion heater

E24-Unvented: For connection to an unvented hot water tank

£925+vat
  • Ephesus 24 tube system including 150 litre hot water tank, unvented (mains pressure) kit and ground mounting frame
  • Solar rated thermostatic blending valve
  • 24 litre expansion vessel
  • Frost protection thermostat
  • 1.5kW 240V immersion heater and stat
  • Anti-legionella kit: Thermostat, timer and 12V dc pump with 240V ac to dc transformer,
  • Connection kit for an unvented hot water tank

E24-Combi: For connection to a solar compatible combi boiler

£950+vat
  • Ephesus 24 tube system including 150 litre hot water tank, unvented (mains pressure) kit and ground mounting frame
  • Solar rated thermostatic blending valve
  • 24 litre expansion vessel
  • Frost protection thermostat
  • 1.5kW 240V immersion heater and stat
  • Anti-legionella kit: Thermostat, timer and 12V dc pump with 240V ac to dc transformer,
  • Connection kit for a solar compatible combi boiler

E24-Combiplus: For connection to a NON solar compatible combi boiler

£1,125+vat
  • Ephesus 24 tube system including 150 litre hot water tank, unvented (mains pressure) kit and ground mounting frame
  • Solar rated thermostatic blending valve
  • 24 litre expansion vessel
  • Frost protection thermostat
  • 1.5kW 240V immersion heater and stat
  • Anti-legionella kit: Thermostat, timer and 12V dc pump with 240V ac to dc transformer,
  • Connection kit for a NON solar compatible combi boiler

Optional extras

E24-Platform

£248+vat
  • Self-assembly enamelled platform 2.4m high

E24-Stand

£198+vat
  • Stand of 42mm OD galvanised steel tube and fittings set for adjustable height up to 3m (can be cut to length)

E24-Vented

tba
  • Available soon – for use with low pressure systems with hot water tank in airing cupboard
  1. VAT is charged at 20% for direct purchase of the product.
  2. VAT is only 5% if supplied and installed by a VAT registered contractor).
  3. Delivery is subject to a quotation

Send a product enquiry

To get a quote for the Atmos Ephesus 24 please enter as much as you can in the form below so we can find out more about your requirements and we’ll contact you to help you complete your order.

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