joule Thermalstore 1.0, Installation Manual

Page: 9 / 68

9
SITING THE UNIT
This unit can supply outlets above it or at some distance from it but any outlets
above the unit will reduce the available outlet pressure by 0.1 bar for every 1m of
height diff erence. The maximum length of the “dead leg” should be as stated in the
Water Supply (Water Fittings) Regulations 1999 G18.7, in particular to the area of
most frequent use.
Particular attention is needed if sitting in a garage or outbuilding as the unit should
be protected from frost. All exposed pipework must be insulated. The unit must be
installed
UPRIGHT on a fl at base capable of supporting its weight when full (please
see the technical specification section for weights).
Suffi cient access to allow maintenance of the valves should be considered. In
addition the immersion heaters are 400mm in length and this distance should be
considered to allow withdrawal for servicing if required. The discharge pipework
from the safety valves should fall continuously and terminate safely.
COLD MAINS PIPEWORK
Run the cold main through the building to the place where is to be installed. Take
care not to run the cold pipe near hot water or heating pipe work so that the heat
pick-up is minimized. Identify the cold water supply pipe and fi t an isolating valve
(not supplied). A 22mm BS1010 stopcock can typically be used but a 22mm quarter
turn full bore valve would be better as it does not restr
ict the fl ow as much. Do not
use “screwdriver slot” or similar valves.
Make the connection to the cold feed of the DHW coil cylinder and incorporate a
drain valve. Ensure that the arrow points in the direction of the water fl ow. Select
a suitable position for the expansion vessel. Mount it to the wall using the bracket
provided. Use the fl exible hose provided to connect to the inlet control group.
BALANCED COLD CONNECTION
If there are to be showers, bidets or monobloc taps in the installation then a bal-
anced cold supply is necessary. There is a 22mm balanced connection on the inlet
control set.
General Requirements