Page 6
MAINS COLD WATER SUPPLY
The POWERow range operates at 2.1 bar (see page 4 for other model settings),
which is controlled by the pressure reducing valve.
The water demand requirements of a property need to be assessed and care should
be made to take into account that hot and cold services are supplied simultaneously
from the mains cold water feed.
of the property. Installers should ensure that the incoming mains pressure is less
than 12 bar and that local authority approval for Installation of Unvented Systems is
granted.
existing ½”(15mm) cold mains pipe work may need to be increased in size.
POSITIONING THE CYLINDER
The POWERow range must be installed vertically on a stable base which must be
capable of supporting the weight when the cylinder is full of water.
of the cylinder. Additional considerations should be made to allow space to mount
dimensions of the product range are provided in this booklet.
Access for maintenance of all equipment should be considered when positioning the
unvented cylinder. Care should be taken that the immersion heater can be withdrawn
for servicing if required these are 375mm long. Building regulation G3 should always
be followed when installing discharge pipe work from the safety valves.
Any hot outlets which are higher than the cylinder will reduce in pressure by 0.1 bar
for every 1m of height difference.
All exposed pipe work should be insulated and additional considerations should be
taken to protect the unit from frost damage. Particular care is needed if the cylinder is
to be installed in an exposed location such as an outhouse or garage.
DESIGN
