02
STAINLESS UV
UNVENTED HOT WATER CYLINDERS
STORAGE PRIOR TO INSTALLATION
STAINLESS UV should be stored in its original packaging
in an upright position in an area free from excessive damp.
Regulations G3+L.
HANDLING PRODUCT
The STAINLESS UV should be carried upright where
possible. Assessments of risks for carrying the cylinder
should be conducted. Use more than 1 person for carrying
where appropriate. Always follow latest guide lines for lifting
techniques, to avoid injury and damage to the product.
WATER SUPPLY
STAINLESS UV operates at 3 bar (controlled by the inlet
control set) and is capable of delivering over 50 litres per
minute. The high quality inlet control set has been designed
to make the most of the flow rates available, however the
performance of any unvented system is only as good as the
mains water supply. The maximum possible water demand
should be assessed, taking into consideration that both
hot and cold services are supplied simultaneously from the
mains.
The water supply should be checked to ensure it can
meet these requirements. If necessary, consult the local
water company regarding the likely pressure and flow rate
availability.
If measuring the water pressure, note that a high static
(no flow) mains pressure is no guarantee of good flow
availability. In a domestic installation 1.5 bar and 25 l/min.
should be regarded as the minimum. The maximum mains
pressure that the inlet control set can accept is 12 bar.
Consideration should be given to upgrading existing
½” (15mm) cold mains pipework to a larger size if the
recommended minimum pressure/flow rate is not being
achieved.
ELECTRIC SUPPLY
The STAINLESS UV requires 240 Volt electrical supply for
the standard Incoloy immersion elements. The electrical
supply to each immersion heater must be fused at 13A via a
double pole isolating switch to BS 3456. The cable must be
at least 2.5mm
2
heat resistant (85°C HOFR) sheathed flex
complying to BS 6141:1981 Table 8.
UNPACKING THE UNIT
STAINLESS UV comes complete with the fittings required
to complete the installation. Please see over for component
content list.
High flow rate inlet control set 3 bar
PRV 6 bar Expansion relief.
Spare Part No. 025070
7 bar Temperature and pressure relief
valve
Spare Part No. TS202
Acetal tundish 15 x 22 mm
Spare Part No. TUNDPL15ALT
Incoloy long life
3 kW immersion heater
Spare Part No. TS9
Two port valve
Spare part No. VALVE2PORTH
Dual thermostat
Spare Part No. US201
High Limit thermostat
Spare Part no. TS28
Installation &
Maintenance Instructions
Spare Part No. 025213
Expansion Vessel
Up to 250 ltr cylinders - 18 ltr vessel
Spare Part No. TS219
300 ltr units - 25 ltr vessel
Spare Part No. TS224