5
OUTLET/TERMINAL FITTINGS (TAPS, ETC.)
The Pre-plumbed cylinder can be used in conjunction with most types of terminal ttings, plumbing ttings and pipework.
However, the rated pressures of any ttings selected should be checked for compatibility before installation.
NOTE: Accessories, plumbing ttings and pipework should have a rated operating pressure of at least 8 bar.
Outlets situated higher than the cylinder will give outlet pressures lower than that at the unit, a 10m height difference
will result in a 1 bar pressure reduction at the outlet tting.
LIMITATIONS
The Pre-plumbed cylinder should not be used in association with any of the following:
• Solid fuel boilers or any other boiler in which the energy input is not under effective thermostatic control, unless additional
and appropriate safety measures are installed.
• Ascending spray type bidets or any other class 1 back syphonage risk require that a type A air gap be employed.
• Steam heating plants unless additional and appropriate safety devices are installed.
• Situations where maintenance is likely to be neglected or safety devices tampered with.
• Water supplies that have either inadequate pressure or where the supply may be intermittent.
• Situations where it is not possible to safely pipe away any discharge from the safety valves.
• In areas where the water consistently contains a high proportion of solids, e.g. suspended matter that could block the
strainer unless adequate ltration can be ensured.
OPERATIONAL SUMMARY
Maximum mains supply pressure 1.6 MPa (16 bar)
Operating pressure 0.35 MPa (3.5 bar)
Expansion vessel pressure 0.35 MPa (3.5 bar)
Maximum design (Rated) pressure 0.8 MPa (8 bar)
Expansion relief valve setting 0.8 MPa (8 bar)
T&P relief valve setting 90°C/1.0 MPa (10 bar)
T&P relief valve manufacturers ref RWC PTEM 510003
Maximum primary circuit pressure 0.3 MPa (3 bar)
Maximum heating uid temperature 85
o
C
Storage capacity See Table 1 below
Weight when full See Table 1 below
OUTLINE SPECIFICATIONS
The cylinders are designed, constructed and tested for compliance with BS EN 12897:2006
Outer casing: White pre-painted corrosion resistant steel
Water container: Duplex stainless steel. 100% pressure tested to 1.5 MPa (15 bar).
Thermal insulation: CFC/HCFC free re retardant expanded polyurethane foam with zero ozone depletion potential. It has a
Global Warming Potential (GWP) of 3.1. Nominal thickness Standard and Solar units 60mm, Slimline units 50mm.
Table 1 - Unit Weights & Standing Heat Loss
Model Type
Nominal
Capacity
(litres)
Weight of
full unit (kg)
Weight of
unit (kg)
Standing Heat Loss
per day (kWh/24h) per year (kWh/365d)
Standard 150 206 56 1.19 434.4
Standard 170 232 62 1.32 481.8
Standard 210 279 69 1.57 573.1
Standard 250 327 77 1.67 609.6
Standard 300 387 87 1.89 689.9
Solar 210 284 74 1.56 569.4
Solar 250 332 82 1.63 595.0
Solar 300 392 92 1.84 671.6
Slimline 150 204 54 1.45 529.3
Slimline 170 230 60 1.63 595.0
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