ESP Ecocent 200L, Инструкция по установке и эксплуатации

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13 of 36 ESP400-10-200L and 300L
outlet on the combination group valve. The Cold Water Combination Valve can be installed as a complete one
piece unit. The valve incorporates a factory set, non-adjustable Pressure Reducer/ Strainer, an Expansion Valve
connection a single Check Valve and balanced cold feed. The valve can be fitted in any orientation to suit the
installation, however, ensure that the valve is installed with the direction of flow arrows (stamped on the side of
the brass body) pointing towards the unit (in the direction of the flow of water).
If a balanced pressure cold water supply is required to a thermostatic shower mixer valve this must be supplied
from the cold water balance outlet (see figure 2). Branches to drinking water outlets should be taken before the
combination group valve to avoid the possibility of warm expanded water being drawn from the tap.
Figure 2:
Cold water balance
outlet
6.6 Drain-Off Cock:
The unit is fitted with a drain-cock and this is used for draining down the unit. You must ensure that this is
accessible and that a hosepipe can be easily attached to allow water from the unit to be drained down.
6.7 Outlet Pipe Work:
Ideally, the pipe work from the unit’s outlet fittings should be in 22mm pipe with short runs of 15mm pipe to
showers and basin taps. Small bore pipe can also be used to suit some taps, but runs should be of minimum
length. Pipe sizes may vary due to system particulars.
6.8 Secondary Circulation of Domestic Hot Water:
Secondary circulation is not recommended but, if a secondary circulation system is required, it should be
installed as per Figure 6. The secondary return pipe should be in 15mm pipe and incorporate a check valve to
prevent backflow. A suitable WRAS approved bronze circulation pump will be required with appropriate
unions. On large systems, due to the increase in system water content, it may be necessary to fit additional
expansion volume to the system by fitting an external expansion vessel to the secondary circuit. This should be
done if the capacity of the secondary circuit exceeds 10 litres.
Pipe capacities (copper):
15mm o/d = 0.13 litres per metre run (10 litres = 77m)
22mm o/d = 0.38 litres per metre run (10 litres = 26m)
28mm o/d = 0.55 litres per metre run (10 litres = 18m)
Secondary circulation is NOT recommended for units being used on “Off Peak” electricity tariffs.