Stainless Steel Unvented Hot Water Cylinders

"... the best of both worlds."


Up until now, installers and specifiers have had two choices when it came to unvented hot water cylinders.  The first is the 'standard' system, where an external expansion vessel needs to be connected by the installer.  The second uses an internal air bubble, which removes the need for the vessel, but introduces the disadvantage of regular servicing to maintain the air bubble.

Now there is a third choice...  the DPS Amazon unvented hot water cylinder is supplied with an external expansion vessel fitted inside the unit casing, removing the need for installers having to connect the vessel, while at the same time overcoming the disadvantage of having to service a bubble.  In other words, the best of both worlds.

The Amazon Super cylinder has a Stainless Steel inner Vessel with a lifetime guarantee. It is highly insulated and finished in a White Vinyl Steel Casing and inside this casing is fitted the Expansion Vessel. A water Inlet Control assembly with filter and back feed protection is supplied for site installation.

Model Code 125 150 170 200 250 300
Capacity (litres) 125 150 170 200 250 300
Overall Diameter (mm) 520 570
Overall Height (mm) 1420 1540 1280 1600 190 2140
Weight, Full (Kg) 165 195 220 250 310 360
Maximum Working Pressure (bar) 3
Maximum Water Supply Pressure (bar) 12
Cold Feed / Hot Supply Connections (mm) 22
Primary Flow and Return Connections (mm) 22
Expansion Vessel Pre-Charge Pressure (bar) 3
Expansion Relief Valve Set Pressure (bar) 5
Temperature and Pressure Relief Valve (bar / °C) 7/90
Heat up time (mins) from - 65°C - INDIRECT MODELS # 36 37 36 33 35 40
Heat up time (mins) from - 65°C - DIRECT MODELS # 72 86 98 108 144 202
Re-Heat time (mins) after 70% used - INDIRECT MODELS # 25 26 25 24 25 29
Re-Heat time (mins) after 70% used - DIRECT MODELS # 37 45 51 63 75 136

# Assuming cold water supply at 15°C.

CYLINDER - CONSTRUCTED OF 316 GRADE STAINLESS STEEL. DOMES ARE WELDED 
INTO POSITION PROVIDING A STRONG AND RELIABLE VESSEL

INSULATION - RIGID POLYURETHANE FOAM - CFC AND HCFC FREE

ELECTRIC RATING - 2.7KW / 230V IMMERSION HEATERS (2 ON ALL DIRECT & 1 ON ALL INDIRECT)

PRIMARY COIL - 22MM CONTINUALLY WOUND COIL

CYLINDER THERMOSTAT - ON INDIRECT UNITS ONLY - TWIN PROBE WITH MANUAL RE-SET 
FOR OVERHEAT CUT-OUT

SAFETY FEATURE - FACTORY FITTED TEMPERATURE AND PRESSURE RELIEF VALVE

Optional Extras

Direct Cylinders
Code IHC - Immersion Heater Controller for use with Economy 7 
(Only 1No. 16 Amp Supply required)

Indirect Cylinders
Code YP - ‘Y’ Plan Controls Factory Fitted to Cylinder.
Code SP - ‘S’ Plan Controls Factory Fitted to Cylinder.
Code SS - Sealed Primary Controls Factory Fitted to Cylinder. 

Other Options May Be Available On Request