ATAG iSteel Twin Coil Cylinders
iSteel Twin Coil Cylinders
Perfect for all system applications.
These indirect cylinders are compatible with our iS system, iR regular boilers and solar systems – and are available in 150-300 litre capacity.


Key features and benefits
- Supplied with energy cut-out device
- Factory-fitted secondary return on 210, 250 and 300 litre
- Twin stainless steel stat pockets for improved reliability
- Efficient ErP ‘B’ banding
- 25 year vessel guarantee – for total peace of mind
- All other cylinder components guaranteed for 2 years
Specifications
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ERP ENERGY EFFICIENCY CLASS
B
CAPACITY (LTRS)
100
HEIGHT (MM)
1140
DIAMETER (MM)
545
WEIGHT EMPTY (KG)
36
WEIGHT FULL (KG)
183
INDIRECT REHEAT (MINS)
17
IMMERSION REHEAT (MINS)
57
HEAT EXCHANGER (KW)
16.33
SOLAR VOLUME (L)
77
STANDING LOSS (KWH/DAY)
1.26
Tapping heights below:
COLD INLET
195
BOTTOM COIL
310
STAT POCKET
365
TOP COIL
660
IMMERSION
705
STAT POCKET
765
SEC. RETURN
–
T&P VALVE
900
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ERP ENERGY EFFICIENCY CLASS
B
CAPACITY (LTRS)
120
HEIGHT (MM)
1320
DIAMETER (MM)
545
WEIGHT EMPTY (KG)
38
WEIGHT FULL (KG)
215
INDIRECT REHEAT (MINS)
20
IMMERSION REHEAT (MINS)
80
HEAT EXCHANGER (KW)
15.9
SOLAR VOLUME (L)
95
STANDING LOSS (KWH/DAY)
1.40
Tapping heights below:
COLD INLET
195
BOTTOM COIL
310
STAT POCKET
365
TOP COIL
665
IMMERSION
725
STAT POCKET
775
SEC. RETURN
–
T&P VALVE
1070
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ERP ENERGY EFFICIENCY CLASS
B
CAPACITY (LTRS)
140
HEIGHT (MM)
1510
DIAMETER (MM)
545
WEIGHT EMPTY (KG)
42
WEIGHT FULL (KG)
249
INDIRECT REHEAT (MINS)
22
IMMERSION REHEAT (MINS)
93
HEAT EXCHANGER (KW)
18.15
SOLAR VOLUME (L)
101
STANDING LOSS (KWH/DAY)
1.54
Tapping heights below:
COLD INLET
195
BOTTOM COIL
370
STAT POCKET
420
TOP COIL
780
IMMERSION
835
STAT POCKET
890
SEC. RETURN
1155
T&P VALVE
1265
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ERP ENERGY EFFICIENCY CLASS
B
CAPACITY (LTRS)
160
HEIGHT (MM)
1720
DIAMETER (MM)
595
WEIGHT EMPTY (KG)
51
WEIGHT FULL (KG)
298
INDIRECT REHEAT (MINS)
25
IMMERSION REHEAT (MINS)
113
HEAT EXCHANGER (KW)
17.8
SOLAR VOLUME (L)
107
STANDING LOSS (KWH/DAY)
1.76
Tapping heights below:
COLD INLET
195
BOTTOM COIL
370
STAT POCKET
420
TOP COIL
855
IMMERSION
905
STAT POCKET
970
SEC. RETURN
1400
T&P VALVE
1510

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