Helix HT1 Series
Combination tank with hygienic boiler (V4a) made of corrugated pipe with one heat exchanger

Energy tank
- material S235JR
- operating pressure 3,0 bar
- test pressure 4,5 bar
- primed on the outside, raw on the inside
- flow profile for stratified heating return
- layer profile in the heating flow
- 2 pcs. sleeve for immersion heater
Stainless steel corrugated tube exchanger
- material 1.4571 (V4a)
- operating pressure 6 bar
- test pressure 12 bar
- acid-treated in a pickling bath and passivated
- made of corrugated stainless steel tube
Solar heat exchanger
- made of 1" smooth tube
Insulation
- type 650 - 1450: 130 mm HeatBlocker
with polystyrene casing silver gray - type 1750 and above: 160 mm HeatBlocker
with polystyrene casing silver gray
![]() | content | Helix | Solar |
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HT1/650 | 661 liter | 5,5 m² | 1 m² |
HT1/750 | 763 liter | 6 m² | 2,2 m² |
HT1/950 | 917 liter | 7 m² | 2,4 m² |
HT1/1200 | 1183 liter | 7 m² | 2,4 m² |
HT1/1450 | 1434 liter | 8 m² | 3,6 m² |
HT1/1750 | 1752 liter | 9 m² | 3,6 m² |
HT1/2200 | 2187 liter | 9 m² | 3,6 m² |
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material | steel S235JR / 1.4571 V4a |
temperatures | -10 up to 109 °C |
coating | primed on the outside, raw on the inside |
operating / test pressure | 3,0 / 4,5 bar |
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