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APR 2018
10
Hot Water Energy Storage
Unvented Cylinders
GB & NI
Installation & Maintenance Instructions for an unvented
hot water cylinder with external thermal expansion
SPECIFICATION DETAILS
The unvented cylinder is made from Duplex stainless
steel for excellent corrosion resistance. The cylinder has a
strong rust-proofed steel case and is highly insulated with
environmentally-friendly foam. Further details are below.
MATERIALS
• Inner shell – Duplex stainless steel
• Coil – 22mm diameter stainless steel
• Bosses – Stainless steel
• Polyurethane CFC- and HCFC-free foam insulation. This
insulation has an Ozone Depletion Potential of Zero and
a Global Warming Potential of 3.1.
• Casing – galvanized steel, durable finish
• Anode – none fitted/required
All cylinders are welded using our advanced TIG welding
production methods, under a controlled oxygen purged
process, to maximize the corrosion resistant qualities of the
high-grade Duplex stainless steel. Every cylinder is checked
using 15 bar pressure testing.
IMMERSION HEATER
• 13/4“ BSP parallel threaded head
• Long life incoloy sheathed low noise element and
thermostat pocket
• Brazed construction
• Combined thermostat and safety cut-out
• Element rating 3kW at 240V A/C
Smart control fitted to the lower immersion heater on
selected models only, please refer to insert sheet for details.
GUARANTEE
The inner cylinder carries a 25-year guarantee against faulty
materials or manufacture on indirect and direct models,
10 years for all heat pump models. All parts supplied with
the cylinder carry a 2-year guarantee. All guarantees must
be registered at www.kingspanenviro.com/guarantee or by
completing and returning the guarantee card on page 28.
FLOW RATES
Our cylinders are renowned for their fast flow rates. The
graph on the insert sheet illustrates the speed at which hot
water can distributed reliably throughout the home.
Table 3:
Pressure specifications
Table 4:
Immersion element specifications
Element Rating
3kW 240V
Thread Type
1¾” BSP
Fuse Requirement
13A via Double Pole Switch
Control Thermostat for Element Temperature Range
45˚C - 65˚C
High Limit Thermostat for Element Temperature Set Point
85˚C
Maximum Inlet Water Pressure
12.0 bar
Operating Pressure/Maximum Design Pressure
3.0 bar
Expansion Valve Opening Pressure
6.0 bar
Expansion Vessel Charge Pressure
3.0 bar
Maximum Operating Pressure
7.0 bar
Opening Pressure of T & P Valve
7.0 bar
Opening Temperature of T & P Valve
90˚C
Maximum Pressure on Primary Circuit (Indirect, Heat Pump, Solar Coil)
3.5 bar