ACV E-Tech S Manuel utilisateur

E-Tech S

High efficiency electric boilers

Sensible Efficiency

For electric to succeed, it is vital that every watt of

input finishes up as useful hot water and heating. The

new range of E-Tech S Tank-in-Tank thermal storage

units is designed to do just that. Four conveniently-

sized models are available and each benefits from the

clever integration of our stainless steel Tank-in-Tank

technology with an equally advanced electric boiler

control system. Cupro incoloy elements within the

primary water provide the electrical energy.

How It Works

An inner stainless steel hot water storage tank draws

heat from primary water circulating through an outer

tank which is heated by heavy duty elements. As

they’re immersed in primary water only, the heating

elements are unlikely to be affected by scaling and

input to them is modulated by a dual stage thermostat

to reduce cycling and load switching. The special

design of the inner DHW tank not only helps ensure

scale-free operation, but also avoids the sediment

problems that plague conventional cylinders. To fully

utilise generated energy the Tank-in-Tank unit is

wrapped in a generous 70mm of polyurethane

insulation.

Benefits and Features

• Quiet operation

• No flue

• Reduced maintenance (no landlord certification)

• Can be used as a stand alone water heater

• Modulating element input

• High hot water storage temperature reduces

legionellae bacteria risk

• Flexible installation options for flow and return

connections

• Vented or unvented use with pressure SystemPaks

available

• Integral primary heating sealed system kit and

circulating pump

• Small footprint enabling compact installation

• Integrated controls

Compact floor standing

combination electric boiler.

Flexible installation options.

Installation Flexibility

Three choices for heating connections.

The boiler can be installed:

• Against the wall

• In a corner facing left

• In a corner facing right

High efficiency electric boilers 35

Technical Data

1. Combined temperature/pressure gauge

2. Dual stage control thermostat

3. Removable top panel

4. Upper front panel, removable for access

to pipe connections

5. Knockouts for pipe work entry and exit

6. Manual reset high limit thermostat

7. High temperature and low water

pressure warning indicator

8. 8 litre expansion vessel/s (one on

160/240, two on 380)

9. Primary water return connection

10. Heating elements

11. Primary drain valve

12. Elements supply contactor

13. Power stage delay timer

14. Primary heating circuit

15. Control circuit connections

16. Control circuit MCB (3 amp)

17. Power cable connections

18. Stainless steel inner hot water tank

19. 70mm polyurethane foam insulation

20. Low water pressure switch

21. Control switches including: on/off,

power stage 1, power stage 2 and

Summer/Winter switch.

160 240 380

A1432mm 1953mm 2134mm

B620mm 620mm 720mm

C720mm 720mm 800mm

D1282mm 1800mm 1985mm

E290mm 290mm 300mm

F43mm 43mm 92mm

G265mm 265mm 265mm

H405mm 405mm 435mm

I310mm 310mm 360mm

J127mm 127mm 94mm

K180mm 180mm 135mm

L126mm 126mm 96mm

Characteristics Dimensions

E-Tech S E-Tech S E-Tech S E-Tech S

160 240 380 380

Single Phase Single Phase Single Phase Tri-Phase

Maximum output kW 14.4* 14.4* 14.4* 28.8*

Nominal supply V 230 230 230 3 x 400 + N

Nominal supply amps 63 63 63 3 x 42

Primary capacity L 55 68 127 127

Total capacity L 161 242 394 394

Heating surface area m

1.26 1.87 2.6 2.6

DHW connection (male BSP) Ø 3/4"3/4"11/2"11/2"

Primary connection (female BSP) Ø 1"1"1"1"

Expansion volume Ltrs 8 8 2 x 8 2 x 8

Weight empty kg 115 155 230 230

Weight full kg 276 397 534 524

Maximum operating temperature °C 85 85 85 85

Etech S can be down-rated in steps of 2.4kW (Single Phase) and 7.2kW (Tri Phase).

Maximum operating pressure Primary: 3 bar Secondary: 10 bar

Performance Data

E-Tech S E-Tech S E-Tech S E-Tech S

160 240 380 380

Single Phase Single Phase Single Phase Tri-Phase

Litres in first 10 minutes 40°C 310 532 855 870

Litres in first 10 minutes 45°C 250 452 725 739

Litres in first 10 minutes 60°C 168 294 468 472

Litres in first hour 40°C 690 880 1200 1516

Litres in first hour 45°C 570 750 1021 1270

Litres in first hour 60°C 375 465 636 752

Continuous flow 40°C Ltrs/hr 413 413 413 826

Continuous flow 45°C Ltrs/hr 354 354 354 708

Continuous flow 60°C Ltrs/hr 248 248 248 448

Please Note: Performance data assumes a primary flow temperature of 85°C and a domestic cold water supply of 10°C

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