Commercial unvented water heaters. With no need for a cold water cistern, Hotflo offers high flexibility and works with either standard or mixer taps. Available in both horizontal and vertical units and in a range of five capacities. Designed, engineered and manufactured in the UK. Fully Energy related Products (ErP) compliant, CE marked, Kiwa, BEAB and Nemko approved.

Hotflo 10 and 15 L:

  • For multiple outlets.
  • Available in 10 L (suitable for up to two basins) and 15 L (suitable for up to three basins) capacities.
  • Replaceable copper inner container and heating element.
  • Externally adjustable thermostat from 10–70°C.
  • Chlorofluorocarbons (CFC) and hydro-chlorofluorocarbons (HCFC) free (zero ozone depletion potential (ODP)) flame-retardant expanded polystyrene.
  • Element 'on' indicator.
  • No sacrificial anode to inspect or replace.
  • Suitable for use with any standard tap or mixer.
  • Supplied with pressure relief valve.
  • Two-year warranty.

Hotflo 50, 80 and 100 L:

  • High output and large capacity for high demand and high performance.
  • Available in 50, 80 and 100 L capacities.
  • Factory fitted temperature and pressure relief valve for added safety control on installation.
  • Manufactured from high grade duplex stainless steel for corrosion resistance and longevity.
  • Available as a horizontal or a vertical unit.
  • Five-year inner container warranty.

Applications:

  • Hotflo 10/15 have been designed for the smaller commercial businesses, suitable for situations where hot water is needed for two or three sinks and basins.
  • The larger capacity Hotflo units can provide water to larger premises with multiple basin requirements.

Standard product features

Weight (empty/ full):

  • Hotflo 10: 6.5/ 16.5 kg.
  • Hotflo 15: 8.4/ 23.4 kg.
  • Hotflo 50: 21.2/ 71.2 kg.
  • Hotflo 80: 26.2/ 106.2 kg.
  • Hotflo 100: 320.2/ 130.2 kg.

Energy related Products (ErP) rating:

  • Hotflo 10 and 15: B.
  • Hotflo 50, 80 and 100: C.

Technical characteristics:

  • Voltage: 230 V.
  • Heat up time: 50 L models: 65 minutes; 80 L models: 115 minutes; 100 L models: 125 minutes.
  • Recovery time: Hotflo 50 H: 36 minutes; Hotflo 50 V: 46 minutes; Hotflo 80 H: 52 minutes; Hotflo 80 V: 81 minutes; Hotflo 100 H: 69 minutes; Hotflo 100 V: 88 minutes.
  • Continuous performance (50ºC ΔT (temperature difference): 51 L.
  • First hour (50ºC ΔT (temperature difference): 50 L models: 101 L; 80 L models: 131 L; 100 L models: 151 L.
  • Maximum inlet pressure to pressure relief valve (PRV): 16 bar.
  • Maximum operating pressure: 10 bar.
  • Tested pressure: 50 L models: 12 bar; 80–100 L models: 16 bar.
  • Connection type: Compression.
  • Connection size: 22 mm.
  • Heat loss: Hotflo 50 H: 0.9 kWh/ 24 hour; Hotflo 50 V: 0.69 kWh/ 24 hour; Hotflo 80 H: 1.13 kWh/ 24 hour; Hotflo 80 V: 0.82 kWh/ 24 hour; Hotflo 100 H: 1.17 kWh/ 24 hour; Hotflo 100 V 0.93 kWh/ 24 hour.
  • Insulation thickness: 50 L models: 25 mm; 80–100 L models: 35 mm.
  • Insulation material (envirofoam): 565RF.
  • IP rating: IPX4.
  • Immersion heater material (Incoloy): 800.

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
90-15-35/440 Storage water heaters, electric

NBS Specification

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This product is associated with the following NBS clauses:

Product specification

An important note about specifying

Manufacturer

Name:

Heatrae Sadia Heating

Tel:

+44 (0)1603 420220

Product reference

[Hotflo 10]
-
2.2 kW output, 10 L capacity, 500 x 267 x 252 mm (h x w x d).
[Hotflo 15]
-
2.2 kW output, 15 L capacity, 656 x 267 x 252 mm (h x w x d).
[Hotflo 50 H]
-
Horizontal, 3 kW output, 50 L capacity, 371 x 997 x 350 mm (h x w x d).
[Hotflo 50 V]
-
Vertical, 3 kW output, 50 L capacity, 1007 x 371 x 350 mm (h x w x d).
[Hotflo 80 H]
-
Horizontal, 3 kW output, 80 L capacity, 454 x 1038 x 454 mm (h x w x d).
[Hotflo 80 V]
-
Vertical, 3 kW output, 80 L capacity, 1066 x 454 x 454 mm (h x w x d).
[Hotflo 100 H]
-
Horizontal, 3 kW output, 100 L capacity, 454 x 1207 x 454 mm (h x w x d).
[Hotflo 100 V]
-
Vertical, 3 kW output, 100 L capacity, 1234 x 454 x 454 mm (h x w x d).

Accessories

[None]
[Pack U1 Combined pressure reducing valve and strainer]
[Pack U3 TMV2]
[Pack U5 Expansion vessel and check valve]
[Pack U6 Temperature and pressure relief valve]
[Pack U7 TMV3]

Manufacturer details

Hurricane Way,
Norwich,
Norfolk, NR6 6EA
Tel +44 (0)1603 420220
Fax +44 (0)1603 420229
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