DHW TANK - Lacaze Energies

DHW TANK

IMMERSION HEATERS AND ELECTRICAL CARTRIDGES

300 à 10 000 Litres

CE compliance
2014/68/UE
2014/35/UE

Immersion heaters or electrical cartridges

Stainless steel AISI 316L tank

"RC" internal coating (WRAS approved material)

The electric heater is most often used in domestic hot water (DHW) storage systems in residential properties or industrial premises. It makes it possible to amass a reserve of water from electric elements fixed directly onto the tank and operating at night during off-peak hours (in accordance with the enrgy supplier’s tariff) .

The volume corresponding to the daily requirement is heated outside the hours of use and thus allows tapping without flow restrictions linked to the installed power.

There are two types of electrical equipment available :
• Immersion heaters : the heating elements are directly immersed into the water requiring heating.
• Cartridges : the heating elements are inserted into stainless sleeves ; the lack of contact with the water avoids corrosion or scaling on the heating elements and also enables disassembly without the need to drain the tank.

The electric water heater is available in four different versions of tank to meet all needs :

"RC" coated carbon steel

Type of coating	RC851	RC951
Capacity	0.3 à 10 m³	0.3 à 10 m³
T° max	85°C	95°C
Duration T° max	Constant	Peak

Stainless steel

Nature of the stainless steel	316 L stainless steel
Capacity	0.3 à 10 m³
T° max	95°C constant
Special resistance to chlorinated shocks	++

Advantages

• Multi-purpose: suitable for use with energy recovery systems (preheating).
• Significant hot water storage capacity to meet peaks in demand.
• Temperature stability for distributed DHW.
• Can be used a constant temperature of up to 95°C (depending on the model).
• Cost-effective solution (heating element directly integrated into the tank).
• Quick and easy to install: equipment delivered to site with pre-assembled thermal
equipment (can be easily removed if required).
• Easy to maintain: cartridges can be removed without the need for draining.
• Extended warranty for stainless steel version.
• Non-standard versions available on request.

Technical description

Tank
• Vertical carbon steel tank with 3 feet.
• 300 to 10 000 litres capacity.
• Maximum working pressure = 7 bar.
• Test pressure = 10 bar.
•Nozzles (in accordance with the following diagram).
• ø 400 mm inspection manhole(1).
(handhole with a diameter of 250 mm for 300
litres.

Internal coating
• Finished with “RC851” coating
(Maximum temp = 85°C constant).
• Magnesium protection anode(s) with wear
indicator

External protection
• Anti-rust paint

Removable thermal insulation
(including the inspection manhole and the bottom of
the tank)
M1 fire rated:
• High-performance mineral wool – 60 mm thick
(λ = 0.032 W/m/K).
• Flexible PVC jacket
M0 fire rated:
• Rockwool – 50 mm thick (40 kg/m3).
• Isoxal metal sheet jacket.

Electric immersion heater(s)
• Reinforced incoloy resistor(s).
• DN40 threaded cap up to 12 kW, M77 beyond
that.
• Voltage – three-phase 230/400 V up to 24 kW,
three-phase 400/700 V beyond that.
– Immersion heater fixing: on the tank or the
manhole as required
• Immersion heater fixing on the manhole .
• Temperature regulation:
– Electrical power ≤ 20 kW:
Three-phase control/safety box 30 A, 400 V,
fitted to the top of the immersion heater
(double safety thermostat + cable switch).
– Electrical power ≤ 20 kW:
Double unipolar safety thermostat.

Electric cartridge(s)
• Removable, supplied in a stainless steel sleeve.
• Low head loss (6 W/cm2).
• M77 connection.
• Double unipolar safety thermostat.
• Cylinder lock on the manhole or/and on the tank.

Options
• Accessories kit (thermometer, DN25 safety
valve, DN50 drainage valve, Air vent valve).
• “RC951” finish (T-max = 95°C peak).
• Non-standard versions available on request.

Warranties (in accordance with our general conditions of sale)

"RC" coated carbon steel

Stainless steel

Advantages

Technical description

Request for quotation

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