Stelflow



Brochure


Installation Manual

The RM Stelflow has carefully been brought together from quality components and has been designed with performance in mind.

Using our many years of involvement within the hot water industry and out knowledge of bringing unvented cylinders to the market we have created a new stanard in unvented water storage.


Made To Measure Stainless

RM Cylinders have pushed the boundries even further leaving the competition to catch up once again. Using a state of the art production facility RM Cylinders can produce bespoke Stelflow cylinders, tapping sizes and heights can now be changed to suit your application giving you flexability without compromise.

When altering inlet and outlet connections we can even provide corresponding control kits meaning you still end up with a complete packaged solution, leaving nothing to chance.


Stelflow Specification


The following outlines the standard specification:

  • Minimum recommended working pressure 1 bar.
  • Maximum working pressure 15 bar.
  • All cylinder connections are 22mm compression.
  • Units tested to 15 bar.
  • Minimum water supply 1.5 bar, 20 litres/min.
  • Primary coil circuit must be pumped.
  • Gravity coils available by special order.
  • Stainless steel stat pocket guaranteed against corrosion.

Stelflow Advantages


Stelflow has the following advantages:

  • 25 Year vessel guarantee.
  • Cylinder components guaranteed for 2 years.
  • Available in a range of styles sizes 90 to 600 litres.
  • A range of horizontal cased units.
  • Coil in coil high effeciency coil - high recovery rates.
  • External expansion for reliability and flexible siting.
  • Full Kiwa Approval.


    Technical Specification

  • Stelflow Performance
    Weight Empty Weight Full (kg) Full Cold Capacity (l) Reheat Indirect Total Minutes Reheat 3kW Immersion Minutes EN12897 Heat Exchange kW Dedicated Solar Volume Litres Standing Loss Cylinder kWh/Day
    90L Direct 21 111 90 - 76 - - 1.07
    90L Indirect 23 111 88 12 53 16.46 - 1.07
    120L Direct 26 146 120 - 103 - - 1.23
    120L Indirect 30 148 118 16 80 16.46 - 1.23
    150L Direct 33 183 150 - 134 - - 1.41
    150L Indirect 38 186 148 17.2 106 18.55 - 1.41
    150L D.Solar 38 186 148 17.2 107 16.46 80 1.41
    150L T.Coil 40 187 147 17.2 57 16.46 77 1.41
    180L Direct 38 218 180 - 164 - - 1.53
    180L Indirect 42 220 178 20.4 136 18.55 - 1.53
    180L D.Solar 42 220 178 20.4 129 18.55 100 1.53
    180L T.Coil 45 222 177 20.4 80 18.55 95 1.53
    210L Direct 41 251 210 - 203 - - 1.8
    210L Indirect 45 253 208 22 167 18.55 - 1.8
    210L D.Solar 45 253 208 22 150 18.55 116 1.8
    210L T.Coil 48 255 207 22 93 18.55 101 1.8
    250L Direct 46 296 250 - 248 - - 2.15
    250L Indirect 51 299 248 25 213 22 - 2.15
    250L D.Solar 51 299 248 25 183 22 137 2.15
    250L T.Coil 53 300 247 25 113 22 137 2.15
    300L Direct 55 355 300 - 323 - - 2.28
    300L Indirect 60 357 297 34 285 22 - 2.28
    300L D.Solar 60 358 298 34 220 22 160 2.28
    300L T.Coil 63 359 298 34 139 22 121 2.28
  • Cylinder Kit Contents

    Direct Stelflow Kit Listing

    Product 90L 120L 150L 180L 210L 250L 300L
    Cold Water Inlet Set 1 1 1 1 1 1 1
    15x22mm Tundish 1 1 1 1 1 1 1
    T&P Reflief Valve 1 1 1 1 1 1 1
    Expansion Vessel 12L 12L 12L 12L 18L 18L 24L
    Exp. Vessel Bracket 1 1 1 1 1 1 1
    Expansion Vessel Hose 1 1 1 1 1 1 1
    Immersion Heater 1 2 2 2 2 2 2
    2 Port Zone Valve 0 0 0 0 0 0 0
    Dual Thermostat 0 0 0 0 0 0 0
    Energy Cut Out Stat 0 0 0 0 0 0 0
    Plastic Grommet 0 0 0 0 0 0 0
    Instruction Manual 1 1 1 1 1 1 1

    Indirect Stelflow Kit Listing

    Product 90L 120L 150L 180L 210L 250L 300L
    Cold Water Inlet Set 1 1 1 1 1 1 1
    15x22mm Tundish 1 1 1 1 1 1 1
    T&P Reflief Valve 1 1 1 1 1 1 1
    Expansion Vessel 12L 12L 12L 12L 18L 18L 24L
    Exp. Vessel Bracket 1 1 1 1 1 1 1
    Expansion Vessel Hose 1 1 1 1 1 1 1
    Immersion Heater 1 1 1 1 1 2 2
    2 Port Zone Valve 1 1 1 1 1 1 1
    Dual Thermostat 1 1 1 1 1 1 1
    Energy Cut Out Stat 0 0 0 0 0 0 0
    Plastic Grommet 0 0 0 0 0 0 0
    Instruction Manual 1 1 1 1 1 1 1

    Direct Solar Stelflow Kit Listing

    Product 90L 120L 150L 180L 210L 250L 300L
    Cold Water Inlet Set - - 1 1 1 1 1
    15x22mm Tundish - - 1 1 1 1 1
    T&P Reflief Valve - - 1 1 1 1 1
    Expansion Vessel - - 12L 12L 18L 18L 24L
    Exp. Vessel Bracket - - 1 1 1 1 1
    Expansion Vessel Hose - - 1 1 1 1 1
    Immersion Heater - - 2 2 2 2 2
    2 Port Zone Valve - - 0 0 0 0 0
    Dual Thermostat - - 0 0 0 0 0
    Energy Cut Out Stat - - 1 1 1 1 1
    Plastic Grommet - - 1 1 1 1 1
    Instruction Manual - - 1 1 1 1 1

    Twin Coil Stelflow Kit Listing

    Product 90L 120L 150L 180L 210L 250L 300L
    Cold Water Inlet Set - - 1 1 1 1 1
    15x22mm Tundish - - 1 1 1 1 1
    T&P Reflief Valve - - 1 1 1 1 1
    Expansion Vessel - - 12L 12L 18L 18L 24L
    Exp. Vessel Bracket - - 1 1 1 1 1
    Expansion Vessel Hose - - 1 1 1 1 1
    Immersion Heater - - 1 1 1 1 1
    2 Port Zone Valve - - 1 1 1 1 1
    Dual Thermostat - - 1 1 1 1 1
    Energy Cut Out Stat - - 1 1 1 1 1
    Plastic Grommet - - 1 1 1 1 1
    Instruction Manual - - 1 1 1 1 1

  • Schematics

  • Direct Technical Drawing

    Code 90D 120D 150D 180D 210D 250D 300D
    Capacity 90L 120L 150L 180L 210L 250L 300L
    Height 727(F) 915(F) 1102(F) 1290(F) 1478(F) 1728(F) 2041(F)
    Diameter 545 545 545 545 545 545 545
    Cold Inlet 129(A) 120(A) 150(A) 180(A) 210(A) 250(A) 300(A)
    Immersion 1 242(B) 242(B) 242(B) 242(B) 242(B) 242(B) 242(B)
    Immersion 2 - 519(C) 619(C) 719(C) 819(C) 959(C) 1109(C)
    Sec. Return - - - - 1009(D) 1259(D) 1509(D)
    T&P Valve 515(E) 703(E) 890(E) 1078(E) 1266(E) 1516(E) 1829(E)

  • Indirect Technical Drawing

    Code 90I 120I 150I 180I 210I 250I 300I
    Capacity 90L 120L 150L 180L 210L 250L 300L
    Height 727(H) 915(H) 1102(H) 1290(H) 1478(H) 1728(H) 2041(H)
    Diameter 545 545 545 545 545 545 545
    Cold Inlet 105(A) 105(A) 105(A) 105(A) 105(A) 105(A) 105(A)
    Bottom Coil 299(B) 299(B) 339(B) 374(B) 374(B) 374(B) 374(B)
    Immersion 1 339(C) 339(C) 379(C) 379(C) 414(C) 414(C) 414(C)
    Stat Pocket 354(D) 354(D) 394(D) 394(D) 474(D) 569(D) 669(D)
    Immersion 2 - - - - - 959(E) 1109(E)
    Sec. Return - - - - 1159(F) 1409(F) 1609(F)
    T&P Valve 515(G) 703(G) 890(G) 1078(G) 1266(G) 1516(G) 1829(G)

  • Twin Technical Drawing

    Code 150T 180T 210T 250T 300T
    Capacity 150L 180L 210L 250L 300L
    Height 1102(I) 1290(I) 1478(I) 1728(I) 2041(I)
    Diameter 545 545 545 545 545
    Cold Inlet 105(A) 105(A) 105(A) 105(A) 105(A)
    Bottom Coil 299(B) 299(B) 374(B) 374(B) 374(B)
    Stat Pocket 354(C) 354(C) 429(C) 429(C) 429(C)
    Immersion 1 702(E) 734(E) 839(E) 914(E) 1039(E)
    Top Coil 651(D) 675(D) 789(D) 863(D) 989(D)
    Stat Pocket 706(F) 738(F) 843(F) 918(F) 1043(F)
    Sec. Return - - 1159(G) 1409(G) 1609(G)
    T&P Valve 890(H) 1078(H) 1266(H) 1516(H) 1829(H)

  • Direct Solar Technical Drawing

    Code 150DS 180DS 210DS 250DS 300DS
    Capacity 150L 180L 210L 250L 300L
    Height 1102(H) 1290(H) 1478(H) 1728(H) 2041(H)
    Diameter 545 545 545 545 545
    Cold Inlet 105(A) 105(A) 105(A) 105(A) 105(A)
    Bottom Coil 299(B) 299(B) 374(B) 374(B) 374(B)
    Stat Pocket 354(C) 354(C) 429(C) 429(C) 429(C)
    Immersion 1 702(D) 734(D) 839(D) 914(D) 1039(D)
    Immersion 2 619(E) 719(E) 819(E) 959(E) 1109(E)
    Sec Return - - 1159(F) 1409(F) 1609(F)
    Sec. Return 890(G) 1078(G) 1266(G) 1516(G) 1829(G)